Cardiology

Four more studies of the relationship of angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs) with COVID-19 have been published in the past few days in top-tier peer-reviewed journals, and on the whole, the data are reassuring.

Three of the new studies were published in the New England Journal of Medicine on May 1, and one study was published in JAMA Cardiology on May 5.

Although all the studies are observational in design and have some confounding factors, overall, the results do not suggest that continued use of ACE inhibitors and ARBs causes harm. However, there are some contradictory findings in secondary analyses regarding possible differences in the effects of the two drug classes.

Providing commentary, John McMurray, MD, professor of medical cardiology at the University of Glasgow, said: “The overall picture seems to suggest no increase in risk of adverse outcomes in patients taking renin-angiotensin system [RAS] blockers ― but with lots of caveats: These are all observational rather than randomized studies, and there may be residual or unmeasured confounding.”
 

Was it ‘Much ado about nothing’?

Franz Messerli, MD, professor of medicine at the University of Bern (Switzerland), added: “Given this state of the art, I am inclined to consider RAS blockade and COVID-19 – despite all the hype in the news media – as much ado about nothing.”

But both Dr. McMurray and Dr. Messerli said they were intrigued about possible differences in the effects of ACE inhibitors and ARBs that some of the new results suggest.

In one study, a team led by Mandeep Mehra, MD, of Brigham and Women’s Hospital Heart and Vascular Center, Boston, analyzed data from 8,910 patients with COVID-19 admitted to 169 hospitals in Asia, Europe, and North America who had either died in the hospital (5.8%) or survived to hospital discharge (94.2%).

In multivariate logistic-regression analysis, age greater than 65 years, coronary artery disease, congestive heart failure, history of cardiac arrhythmia, chronic obstructive pulmonary disease, and current smoking were associated with an increased risk for in-hospital death. Female sex was associated with a decreased risk. Neither ACE inhibitors nor ARBs were associated with an increased risk for in-hospital death.

In fact, ACE inhibitors were associated with a significant reduction in mortality (odds ratio, 0.33), as were statins (OR, 0.35).

The authors, however, stressed that these observations about reduced mortality with ACE inhibitors and statins “should be considered with extreme caution.”

“Because our study was not a randomized, controlled trial, we cannot exclude the possibility of confounding. In addition, we examined relationships between many variables and in-hospital death, and no primary hypothesis was prespecified; these factors increased the probability of chance associations being found. Therefore, a cause-and-effect relationship between drug therapy and survival should not be inferred,” they wrote.

A secondary analysis that was restricted to patients with hypertension (those for whom an ACE inhibitor or an ARB would be indicated) also did not show harm.

A second study published in the New England Journal of Medicine had a case-control design. The authors, led by Giuseppe Mancia, MD, of the University of Milano-Bicocca (Italy), compared 6,272 patients with confirmed COVID-19 (case patients) with 30,759 control persons who were matched according to age, sex, and municipality of residence.

In a conditional logistic-regression multivariate analysis, neither ACE inhibitors nor ARBs were associated with the likelihood of SARS-CoV-2 infection.

“Thus, our results do not provide evidence of an independent relationship between renin angiotensin aldosterone blockers and the susceptibility to COVID-19 in humans,” the authors concluded.

In addition, a second analysis that compared patients who had severe or fatal infections with matched control persons did not show an association between ACE inhibitors or ARBs and severe disease.

In the third study published in the New England Journal of Medicine, a group led by Harmony R. Reynolds, MD, of New York University, analyzed data from the health records of 12,594 patients in the NYU Langone Health system who had been tested for COVID-19. They found 5,894 patients whose test results were positive. Of these patients, 1,002 had severe illness, which was defined as illness requiring admission to the ICU, need for mechanical ventilation, or death.

Using Bayesian analysis and propensity score matching, the researchers assessed the relation between previous treatment with five different classes of antihypertensive drugs (ACE inhibitors, ARBs, beta blockers, calcium blockers, and thiazide diuretics) and the likelihood of a positive or negative result on COVID-19 testing, as well as the likelihood of severe illness among patients who tested positive.

Results showed no positive association between any of the analyzed drug classes and either a positive test result or severe illness.

In an accompanying editorial, a group led by John A. Jarcho, MD, of Harvard Medical School, Boston, and deputy editor of the New England Journal of Medicine, wrote: “Taken together, these three studies do not provide evidence to support the hypothesis that ACE inhibitor or ARB use is associated with the risk of SARS-CoV-2 infection, the risk of severe COVID-19 among those infected, or the risk of in-hospital death among those with a positive test.

“Each of these studies has weaknesses inherent in observational data, but we find it reassuring that three studies in different populations and with different designs arrive at the consistent message that the continued use of ACE inhibitors and ARBs is unlikely to be harmful in patients with COVID-19. Several other smaller studies from China and the United Kingdom have come to the same conclusion,” the authors of the editorial stated.

In the study published in JAMA Cardiology, a group led by Neil Mehta, MBBS, of the Cleveland Clinic, Ohio, analyzed data on 18,472 patients who had been tested for COVID-19 between March 8 and April 12 in the Cleveland Clinic Health System in Ohio and Florida. Of these patients, 9.4% tested positive.

After overlap propensity score weighting for both ACE inhibitors and ARBs to take into account relevant comorbidities, there was no difference in risk for testing positive among patients taking an ACE inhibitor or an ARB in comparison with those not taking such medication.
 

Are there different effects between ACE inhibitors and ARBs?

A secondary exploratory analysis showed a higher likelihood of hospital admission among patients who tested positive and who were taking either ACE inhibitors (OR, 1.84) or ARBs (OR, 1.61), and there was a higher likelihood of ICU admission among patients who tested positive and who were taking an ACE inhibitor (OR 1.77), but no such difference was observed among those taking ARBs.

Coauthor Ankur Kalra, MD, of the Cleveland Clinic, said in an interview that results of the exploratory analysis fit with the hypothesis that the two drugs classes may have different effects in patients with COVID-19.

“Angiotensin II promotes vasoconstriction, inflammation, and fibrosis in the lungs, and ARBs block the effects of angiotensin II more effectively than ACE inhibitors. In addition, ACE inhibitors (but not ARBs) increase levels of bradykinin, which may be one factor leading to acute respiratory distress syndrome,” he noted.

“However, these results should only be considered exploratory, as there is inherent bias in observational data,” Dr. Kalra stressed.

In an accompanying editorial in JAMA Cardiology, a group led by Laine E. Thomas, PhD, of Duke Clinical Research Institute, Durham, North Carolina, said that the results of this secondary exploratory analysis are limited by a small number of patients and “are likely explained by confounding and should not be inferred as causal.”

The New England Journal of Medicine editorialists reached a similar conclusion regarding the lower mortality in COVID-19 patients who took ACE inhibitors in the study by Dr. Mehra and colleagues. They say this unexpected result “may be due to unmeasured confounding and, in the absence of a randomized trial, should not be regarded as evidence to prescribe these drugs in patients with COVID-19.”

Providing further comment, Dr. McMurray said: “Normally, I would not read too much into the different effects of ACE inhibitors and ARBs suggested in the Cleveland study because of the small numbers (about 28 ACE inhibitor–treated patients admitted to ICU) and the limited information about matching and/or adjustment for potential differences between groups.

“I could also argue that the comparison that would best answer the question about risk related to type of RAS blocker would be the direct comparison of people taking an ACE inhibitor with those taking an ARB (and that doesn’t look very different). The only thing that makes me a little cautious about completely dismissing the possibility of a difference between ACE inhibitor and ARB here is the suggestion of a similar trend in another large study from the VA [Veterans Affairs] system,” he added.

He also noted that speculation about there being mechanisms that involve different effects of the two drug classes on bradykinin and angiotensin II was “plausible but unproven.”

Dr. Messerli added: “Before turning the page, I would like to see an analysis comparing ACE inhibitors and ARBs, since experimentally, their effect on ACE2 (the receptor to which the virus binds) seems to differ. The study of Mehta et al in JAMA Cardiology may be the first clinical hint indicating that ARBs are more protective than ACEIs. However even here, the looming possibility of confounding cannot be excluded.”

Dr. Messerli also pointed to a hypothesis that suggests that direct viral infection of endothelial cells expressing ACE2 receptors may explain worse outcomes in patients with cardiovascular comorbidities, which provides a rationale for therapies to stabilize the endothelium, particularly with anti-inflammatory anticytokine drugs, ACE inhibitors, and statins.

A version of this article originally appeared on Medscape.com.

Four more studies of the relationship of angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs) with COVID-19 have been published in the past few days in top-tier peer-reviewed journals, and on the whole, the data are reassuring.

Three of the new studies were published in the New England Journal of Medicine on May 1, and one study was published in JAMA Cardiology on May 5.

Although all the studies are observational in design and have some confounding factors, overall, the results do not suggest that continued use of ACE inhibitors and ARBs causes harm. However, there are some contradictory findings in secondary analyses regarding possible differences in the effects of the two drug classes.

Providing commentary, John McMurray, MD, professor of medical cardiology at the University of Glasgow, said: “The overall picture seems to suggest no increase in risk of adverse outcomes in patients taking renin-angiotensin system [RAS] blockers ― but with lots of caveats: These are all observational rather than randomized studies, and there may be residual or unmeasured confounding.”
 

Was it ‘Much ado about nothing’?

Franz Messerli, MD, professor of medicine at the University of Bern (Switzerland), added: “Given this state of the art, I am inclined to consider RAS blockade and COVID-19 – despite all the hype in the news media – as much ado about nothing.”

But both Dr. McMurray and Dr. Messerli said they were intrigued about possible differences in the effects of ACE inhibitors and ARBs that some of the new results suggest.

In one study, a team led by Mandeep Mehra, MD, of Brigham and Women’s Hospital Heart and Vascular Center, Boston, analyzed data from 8,910 patients with COVID-19 admitted to 169 hospitals in Asia, Europe, and North America who had either died in the hospital (5.8%) or survived to hospital discharge (94.2%).

In multivariate logistic-regression analysis, age greater than 65 years, coronary artery disease, congestive heart failure, history of cardiac arrhythmia, chronic obstructive pulmonary disease, and current smoking were associated with an increased risk for in-hospital death. Female sex was associated with a decreased risk. Neither ACE inhibitors nor ARBs were associated with an increased risk for in-hospital death.

In fact, ACE inhibitors were associated with a significant reduction in mortality (odds ratio, 0.33), as were statins (OR, 0.35).

The authors, however, stressed that these observations about reduced mortality with ACE inhibitors and statins “should be considered with extreme caution.”

“Because our study was not a randomized, controlled trial, we cannot exclude the possibility of confounding. In addition, we examined relationships between many variables and in-hospital death, and no primary hypothesis was prespecified; these factors increased the probability of chance associations being found. Therefore, a cause-and-effect relationship between drug therapy and survival should not be inferred,” they wrote.

A secondary analysis that was restricted to patients with hypertension (those for whom an ACE inhibitor or an ARB would be indicated) also did not show harm.

A second study published in the New England Journal of Medicine had a case-control design. The authors, led by Giuseppe Mancia, MD, of the University of Milano-Bicocca (Italy), compared 6,272 patients with confirmed COVID-19 (case patients) with 30,759 control persons who were matched according to age, sex, and municipality of residence.

In a conditional logistic-regression multivariate analysis, neither ACE inhibitors nor ARBs were associated with the likelihood of SARS-CoV-2 infection.

“Thus, our results do not provide evidence of an independent relationship between renin angiotensin aldosterone blockers and the susceptibility to COVID-19 in humans,” the authors concluded.

In addition, a second analysis that compared patients who had severe or fatal infections with matched control persons did not show an association between ACE inhibitors or ARBs and severe disease.

In the third study published in the New England Journal of Medicine, a group led by Harmony R. Reynolds, MD, of New York University, analyzed data from the health records of 12,594 patients in the NYU Langone Health system who had been tested for COVID-19. They found 5,894 patients whose test results were positive. Of these patients, 1,002 had severe illness, which was defined as illness requiring admission to the ICU, need for mechanical ventilation, or death.

Using Bayesian analysis and propensity score matching, the researchers assessed the relation between previous treatment with five different classes of antihypertensive drugs (ACE inhibitors, ARBs, beta blockers, calcium blockers, and thiazide diuretics) and the likelihood of a positive or negative result on COVID-19 testing, as well as the likelihood of severe illness among patients who tested positive.

Results showed no positive association between any of the analyzed drug classes and either a positive test result or severe illness.

In an accompanying editorial, a group led by John A. Jarcho, MD, of Harvard Medical School, Boston, and deputy editor of the New England Journal of Medicine, wrote: “Taken together, these three studies do not provide evidence to support the hypothesis that ACE inhibitor or ARB use is associated with the risk of SARS-CoV-2 infection, the risk of severe COVID-19 among those infected, or the risk of in-hospital death among those with a positive test.

“Each of these studies has weaknesses inherent in observational data, but we find it reassuring that three studies in different populations and with different designs arrive at the consistent message that the continued use of ACE inhibitors and ARBs is unlikely to be harmful in patients with COVID-19. Several other smaller studies from China and the United Kingdom have come to the same conclusion,” the authors of the editorial stated.

In the study published in JAMA Cardiology, a group led by Neil Mehta, MBBS, of the Cleveland Clinic, Ohio, analyzed data on 18,472 patients who had been tested for COVID-19 between March 8 and April 12 in the Cleveland Clinic Health System in Ohio and Florida. Of these patients, 9.4% tested positive.

After overlap propensity score weighting for both ACE inhibitors and ARBs to take into account relevant comorbidities, there was no difference in risk for testing positive among patients taking an ACE inhibitor or an ARB in comparison with those not taking such medication.
 

Are there different effects between ACE inhibitors and ARBs?

A secondary exploratory analysis showed a higher likelihood of hospital admission among patients who tested positive and who were taking either ACE inhibitors (OR, 1.84) or ARBs (OR, 1.61), and there was a higher likelihood of ICU admission among patients who tested positive and who were taking an ACE inhibitor (OR 1.77), but no such difference was observed among those taking ARBs.

Coauthor Ankur Kalra, MD, of the Cleveland Clinic, said in an interview that results of the exploratory analysis fit with the hypothesis that the two drugs classes may have different effects in patients with COVID-19.

“Angiotensin II promotes vasoconstriction, inflammation, and fibrosis in the lungs, and ARBs block the effects of angiotensin II more effectively than ACE inhibitors. In addition, ACE inhibitors (but not ARBs) increase levels of bradykinin, which may be one factor leading to acute respiratory distress syndrome,” he noted.

“However, these results should only be considered exploratory, as there is inherent bias in observational data,” Dr. Kalra stressed.

In an accompanying editorial in JAMA Cardiology, a group led by Laine E. Thomas, PhD, of Duke Clinical Research Institute, Durham, North Carolina, said that the results of this secondary exploratory analysis are limited by a small number of patients and “are likely explained by confounding and should not be inferred as causal.”

The New England Journal of Medicine editorialists reached a similar conclusion regarding the lower mortality in COVID-19 patients who took ACE inhibitors in the study by Dr. Mehra and colleagues. They say this unexpected result “may be due to unmeasured confounding and, in the absence of a randomized trial, should not be regarded as evidence to prescribe these drugs in patients with COVID-19.”

Providing further comment, Dr. McMurray said: “Normally, I would not read too much into the different effects of ACE inhibitors and ARBs suggested in the Cleveland study because of the small numbers (about 28 ACE inhibitor–treated patients admitted to ICU) and the limited information about matching and/or adjustment for potential differences between groups.

“I could also argue that the comparison that would best answer the question about risk related to type of RAS blocker would be the direct comparison of people taking an ACE inhibitor with those taking an ARB (and that doesn’t look very different). The only thing that makes me a little cautious about completely dismissing the possibility of a difference between ACE inhibitor and ARB here is the suggestion of a similar trend in another large study from the VA [Veterans Affairs] system,” he added.

He also noted that speculation about there being mechanisms that involve different effects of the two drug classes on bradykinin and angiotensin II was “plausible but unproven.”

Dr. Messerli added: “Before turning the page, I would like to see an analysis comparing ACE inhibitors and ARBs, since experimentally, their effect on ACE2 (the receptor to which the virus binds) seems to differ. The study of Mehta et al in JAMA Cardiology may be the first clinical hint indicating that ARBs are more protective than ACEIs. However even here, the looming possibility of confounding cannot be excluded.”

Dr. Messerli also pointed to a hypothesis that suggests that direct viral infection of endothelial cells expressing ACE2 receptors may explain worse outcomes in patients with cardiovascular comorbidities, which provides a rationale for therapies to stabilize the endothelium, particularly with anti-inflammatory anticytokine drugs, ACE inhibitors, and statins.

A version of this article originally appeared on Medscape.com.

Four more studies of the relationship of angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs) with COVID-19 have been published in the past few days in top-tier peer-reviewed journals, and on the whole, the data are reassuring.

Three of the new studies were published in the New England Journal of Medicine on May 1, and one study was published in JAMA Cardiology on May 5.

Although all the studies are observational in design and have some confounding factors, overall, the results do not suggest that continued use of ACE inhibitors and ARBs causes harm. However, there are some contradictory findings in secondary analyses regarding possible differences in the effects of the two drug classes.

Providing commentary, John McMurray, MD, professor of medical cardiology at the University of Glasgow, said: “The overall picture seems to suggest no increase in risk of adverse outcomes in patients taking renin-angiotensin system [RAS] blockers ― but with lots of caveats: These are all observational rather than randomized studies, and there may be residual or unmeasured confounding.”
 

Was it ‘Much ado about nothing’?

Franz Messerli, MD, professor of medicine at the University of Bern (Switzerland), added: “Given this state of the art, I am inclined to consider RAS blockade and COVID-19 – despite all the hype in the news media – as much ado about nothing.”

But both Dr. McMurray and Dr. Messerli said they were intrigued about possible differences in the effects of ACE inhibitors and ARBs that some of the new results suggest.

In one study, a team led by Mandeep Mehra, MD, of Brigham and Women’s Hospital Heart and Vascular Center, Boston, analyzed data from 8,910 patients with COVID-19 admitted to 169 hospitals in Asia, Europe, and North America who had either died in the hospital (5.8%) or survived to hospital discharge (94.2%).

In multivariate logistic-regression analysis, age greater than 65 years, coronary artery disease, congestive heart failure, history of cardiac arrhythmia, chronic obstructive pulmonary disease, and current smoking were associated with an increased risk for in-hospital death. Female sex was associated with a decreased risk. Neither ACE inhibitors nor ARBs were associated with an increased risk for in-hospital death.

In fact, ACE inhibitors were associated with a significant reduction in mortality (odds ratio, 0.33), as were statins (OR, 0.35).

The authors, however, stressed that these observations about reduced mortality with ACE inhibitors and statins “should be considered with extreme caution.”

“Because our study was not a randomized, controlled trial, we cannot exclude the possibility of confounding. In addition, we examined relationships between many variables and in-hospital death, and no primary hypothesis was prespecified; these factors increased the probability of chance associations being found. Therefore, a cause-and-effect relationship between drug therapy and survival should not be inferred,” they wrote.

A secondary analysis that was restricted to patients with hypertension (those for whom an ACE inhibitor or an ARB would be indicated) also did not show harm.

A second study published in the New England Journal of Medicine had a case-control design. The authors, led by Giuseppe Mancia, MD, of the University of Milano-Bicocca (Italy), compared 6,272 patients with confirmed COVID-19 (case patients) with 30,759 control persons who were matched according to age, sex, and municipality of residence.

In a conditional logistic-regression multivariate analysis, neither ACE inhibitors nor ARBs were associated with the likelihood of SARS-CoV-2 infection.

“Thus, our results do not provide evidence of an independent relationship between renin angiotensin aldosterone blockers and the susceptibility to COVID-19 in humans,” the authors concluded.

In addition, a second analysis that compared patients who had severe or fatal infections with matched control persons did not show an association between ACE inhibitors or ARBs and severe disease.

In the third study published in the New England Journal of Medicine, a group led by Harmony R. Reynolds, MD, of New York University, analyzed data from the health records of 12,594 patients in the NYU Langone Health system who had been tested for COVID-19. They found 5,894 patients whose test results were positive. Of these patients, 1,002 had severe illness, which was defined as illness requiring admission to the ICU, need for mechanical ventilation, or death.

Using Bayesian analysis and propensity score matching, the researchers assessed the relation between previous treatment with five different classes of antihypertensive drugs (ACE inhibitors, ARBs, beta blockers, calcium blockers, and thiazide diuretics) and the likelihood of a positive or negative result on COVID-19 testing, as well as the likelihood of severe illness among patients who tested positive.

Results showed no positive association between any of the analyzed drug classes and either a positive test result or severe illness.

In an accompanying editorial, a group led by John A. Jarcho, MD, of Harvard Medical School, Boston, and deputy editor of the New England Journal of Medicine, wrote: “Taken together, these three studies do not provide evidence to support the hypothesis that ACE inhibitor or ARB use is associated with the risk of SARS-CoV-2 infection, the risk of severe COVID-19 among those infected, or the risk of in-hospital death among those with a positive test.

“Each of these studies has weaknesses inherent in observational data, but we find it reassuring that three studies in different populations and with different designs arrive at the consistent message that the continued use of ACE inhibitors and ARBs is unlikely to be harmful in patients with COVID-19. Several other smaller studies from China and the United Kingdom have come to the same conclusion,” the authors of the editorial stated.

In the study published in JAMA Cardiology, a group led by Neil Mehta, MBBS, of the Cleveland Clinic, Ohio, analyzed data on 18,472 patients who had been tested for COVID-19 between March 8 and April 12 in the Cleveland Clinic Health System in Ohio and Florida. Of these patients, 9.4% tested positive.

After overlap propensity score weighting for both ACE inhibitors and ARBs to take into account relevant comorbidities, there was no difference in risk for testing positive among patients taking an ACE inhibitor or an ARB in comparison with those not taking such medication.
 

Are there different effects between ACE inhibitors and ARBs?

A secondary exploratory analysis showed a higher likelihood of hospital admission among patients who tested positive and who were taking either ACE inhibitors (OR, 1.84) or ARBs (OR, 1.61), and there was a higher likelihood of ICU admission among patients who tested positive and who were taking an ACE inhibitor (OR 1.77), but no such difference was observed among those taking ARBs.

Coauthor Ankur Kalra, MD, of the Cleveland Clinic, said in an interview that results of the exploratory analysis fit with the hypothesis that the two drugs classes may have different effects in patients with COVID-19.

“Angiotensin II promotes vasoconstriction, inflammation, and fibrosis in the lungs, and ARBs block the effects of angiotensin II more effectively than ACE inhibitors. In addition, ACE inhibitors (but not ARBs) increase levels of bradykinin, which may be one factor leading to acute respiratory distress syndrome,” he noted.

“However, these results should only be considered exploratory, as there is inherent bias in observational data,” Dr. Kalra stressed.

In an accompanying editorial in JAMA Cardiology, a group led by Laine E. Thomas, PhD, of Duke Clinical Research Institute, Durham, North Carolina, said that the results of this secondary exploratory analysis are limited by a small number of patients and “are likely explained by confounding and should not be inferred as causal.”

The New England Journal of Medicine editorialists reached a similar conclusion regarding the lower mortality in COVID-19 patients who took ACE inhibitors in the study by Dr. Mehra and colleagues. They say this unexpected result “may be due to unmeasured confounding and, in the absence of a randomized trial, should not be regarded as evidence to prescribe these drugs in patients with COVID-19.”

Providing further comment, Dr. McMurray said: “Normally, I would not read too much into the different effects of ACE inhibitors and ARBs suggested in the Cleveland study because of the small numbers (about 28 ACE inhibitor–treated patients admitted to ICU) and the limited information about matching and/or adjustment for potential differences between groups.

“I could also argue that the comparison that would best answer the question about risk related to type of RAS blocker would be the direct comparison of people taking an ACE inhibitor with those taking an ARB (and that doesn’t look very different). The only thing that makes me a little cautious about completely dismissing the possibility of a difference between ACE inhibitor and ARB here is the suggestion of a similar trend in another large study from the VA [Veterans Affairs] system,” he added.

He also noted that speculation about there being mechanisms that involve different effects of the two drug classes on bradykinin and angiotensin II was “plausible but unproven.”

Dr. Messerli added: “Before turning the page, I would like to see an analysis comparing ACE inhibitors and ARBs, since experimentally, their effect on ACE2 (the receptor to which the virus binds) seems to differ. The study of Mehta et al in JAMA Cardiology may be the first clinical hint indicating that ARBs are more protective than ACEIs. However even here, the looming possibility of confounding cannot be excluded.”

Dr. Messerli also pointed to a hypothesis that suggests that direct viral infection of endothelial cells expressing ACE2 receptors may explain worse outcomes in patients with cardiovascular comorbidities, which provides a rationale for therapies to stabilize the endothelium, particularly with anti-inflammatory anticytokine drugs, ACE inhibitors, and statins.

A version of this article originally appeared on Medscape.com.

Women with cardiovascular conditions who are planning pregnancy should be assessed and managed by a multidisciplinary team to ensure the best outcomes, according to a statement from the American Heart Association.

©American Heart Association

Cardiovascular disease (CVD) remains the leading cause of pregnancy-related mortality in the United States, and accounted for approximately 17 deaths per 100,000 live births in 2015, wrote Laxmi S. Mehta, MD, of The Ohio State University, Columbus, and colleagues.

Ideally, a woman with CVD at the time of pregnancy should be managed by a multidisciplinary cardio-obstetrics team that can assess cardiovascular risk, obstetric risk, and fetal risk throughout pregnancy, delivery, and up to a year post partum. The team should develop a shared strategy to promote best outcomes, according to the statement. The cardio-obstetrics team may include obstetricians, cardiologists, anesthesiologists, maternal-fetal medicine specialists, geneticists, neurologists, nurses, and pharmacists, according to the statement.

Women with preexisting CVD should receive counseling about maternal and fetal risks before conception, if possible, to involve the women in shared decision-making and to develop strategies for each stage of pregnancy and delivery, Dr. Mehta and associates said. Such counseling should include a review of all medications and assessment of risk factors.

However, some women present already in the early stages of pregnancy even with severe conditions such as pulmonary arterial hypertension, severe ventricular dysfunction, severe left-sided heart obstruction, and significant aortic dilatation with underlying connective tissue disease. Women with these conditions often are counseled to avoid pregnancy, but if they already are pregnant, a high-risk cardio-obstetrics team will need to work together to discover the best strategies going forward to mitigate risk, Dr. Mehta and associates said.

Common CVD conditions that affect pregnancy include hypertensive disorders, notably preeclampsia, defined as systolic blood pressure greater than 140 mm Hg or diastolic blood pressure greater than 90 mm Hg in women after 20 weeks of gestation whose blood pressure was normal prior to pregnancy. A management strategy to reduce the risk of pregnancy-related complications from hypertension includes healthy lifestyle behaviors such as exercise, nutrition, and smoking cessation, according to the statement. However, patients with severe hypertension may require intravenous labetalol or hydralazine. The statement gives more information about handling preeclampsia with pulmonary edema, and prevention of eclampsia and treatment of seizures.

It is important to recognize that severe hypertension or superimposed preeclampsia may occur for the first time post partum. Early ambulatory visits in the first 1-2 weeks are sensible. Medications may be needed to keep a systolic blood pressure not higher than 150 mm Hg and a diastolic blood pressure not higher than 100 mm Hg, Dr. Mehta and associates said.

According to the statement, severe hypertriglyceridemia and familial hypercholesterolemia are the two most common conditions in which lipids should be addressed during pregnancy, with consideration of the fetal risks associated with certain medications.

“Statins are contraindicated during pregnancy, and all women who are on any lipid-lowering agents should review with their physician the safety of treatment during pregnancy and whether to discontinue treatment before pregnancy,” according to the statement. A heart-healthy lifestyle can help improve lipid profiles in all pregnant patients, Dr. Mehta and associates said. Patients with extremely high triglycerides above 500 mg/dL are at risk of pancreatitis and “may benefit from pharmacological agents (omega-3 fatty acids with or without fenofibrate or gemfibrozil) during the second trimester,” they noted. Pregnant women with familial hypercholesterolemia might take bile acid sequestrants, or as a last resort, low-density lipoprotein apheresis.

Other conditions calling for a multidisciplinary cardio-obstetric approach include preexisting coronary artery disease, cardiomyopathies, arrhythmias, valvular heart disease, cerebrovascular disease, and deep venous thrombosis, according to the statement, which provides information about the risks, diagnosis, and management.

When it is time for delivery, spontaneous labor and vaginal birth are preferable for most women with heart disease, as cesarean delivery is associated with increased risk of infection, thrombotic complications, and blood loss, according to the statement.

Women with CVD and associated complications will require “specialized long-term cardiovascular follow-up,” Dr. Mehta and associates said. “In women with a high-risk pregnancy, a cardio-obstetrics team is essential to prevent maternal morbidity and mortality during the length of the pregnancy and post partum.”

“The release of this document demonstrates the AHA’s recognition of the importance of CVD in pregnancy-related death and their commitment to education and ensuring best practices in this field,” said Lisa M. Hollier, MD, past president of the American College of Obstetricians and Gynecologists and chief medical officer at Texas Children’s Health Plan, Bellaire.

“I think one of the most important outcomes from the release of this scientific statement from AHA will be increased implementation of cardio-obstetrics teams,” she said in an interview.

“In the United States, cardiovascular disease and cardiomyopathy together are now the leading cause of death in pregnancy and the postpartum period, and constitute 26.5% of pregnancy-related deaths, with higher rates of mortality among women of color and women with lower incomes,” she said. “The rising trend in cardiovascular-related maternal deaths appears to be due to acquired, not congenital, heart disease.”

During her tenure as president of ACOG, Dr. Hollier convened a task force on cardiovascular disease in pregnancy that developed guidance that outlines screening, diagnosis, and management of CVD for women from prepregnancy through post partum.

Dr. Hollier noted that COVID-19 emphasizes racial disparities for maternal mortality.

“Pregnant patients with comorbidities, like heart conditions, may be at increased risk for severe illness from COVID-19 – consistent with the general population with similar comorbidities,” she said. “And as we know, black women’s risk of dying from CVD-related pregnancy complications is 3.4 times higher than that of white women. During the COVID-19 pandemic, we are seeing these racial health disparities exacerbated.”

However, any pregnant patients should not hesitate to communicate with their health care providers despite the pandemic situation, Dr. Hollier emphasized. “Communication between a patient and her ob.gyn., cardiologist, or other clinician is even more critical now during the COVID-19 pandemic. We’re hearing reports that patients who are experiencing symptoms or those with known cardiac conditions are avoiding the hospital and delaying or not seeking necessary treatment. This has the very real possibility of worsening the devastating maternal mortality crisis that we’re already experiencing in this country.”

To help overcome barriers to treatment, “collaboration between ob.gyns. and cardiologists, such as the cardio-obstetrics team or pregnancy heart team, is critical,” said Dr. Hollier. “These collaborative teams with a multidisciplinary approach can prospectively reduce the communication gaps across specialties when patients are seen separately. They can also improve the communication during care transitions such as between outpatient and inpatient care.


“In reviews of maternal deaths, we have found that there are often delays in diagnosis of heart conditions during and after pregnancy,” Dr. Hollier added. “Most maternal deaths from CVD are due to either undiagnosed cardiovascular disease or new-onset cardiomyopathy. ACOG recommends that all women be assessed for cardiovascular disease in the antepartum and postpartum periods using a recently developed algorithm,” she said. “Women who have known CVD and women who have concerning symptoms should have a consultation with this team. With increased awareness and screening, women can receive the additional care that they need.

“Because management of cardiac conditions in pregnancy is so complex, it is important to ensure that women receive care with teams and in facilities that have appropriate resources,” explained Dr. Hollier. “Women with known heart disease should see a cardiologist prior to pregnancy and receive prepregnancy counseling,” as noted in the AHA statement. “Patients determined to have moderate and high-risk CVD should be managed during pregnancy, delivery, and post partum in a medical center that is able to provide a higher level of care, including a cardio-obstetrics team.”

Early recognition of cardiovascular conditions is essential to help manage care and reduce risks to mother and baby, said Dr. Hollier. “Identification before a woman becomes pregnant means the patient’s care can be properly managed throughout the pregnancy and a detailed delivery plan can be developed through shared decision making between the patient and provider. We must think of heart disease as a possibility in every pregnant or postpartum patient we see to detect and treat at-risk mothers,” she said.

Additional research should focus on identifying risk factors prior to pregnancy, said Dr. Hollier. “There are often delays in recognizing symptoms during pregnancy and post partum, particularly for black women. We need data to understand which protocols are best to identify heart disease,”

Dr. Hollier had no financial conflicts to disclose. The authors of the AHA statement had no financial conflicts to disclose. The scientific statement was produced on behalf of the American Heart Association Council on Clinical Cardiology; Council on Atherosclerosis, Thrombosis and Vascular Biology; Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

SOURCE: Mehta LS et al. Circulation. 2020 May 4. doi: 10.1161/CIR.0000000000000772.

Women with cardiovascular conditions who are planning pregnancy should be assessed and managed by a multidisciplinary team to ensure the best outcomes, according to a statement from the American Heart Association.

©American Heart Association

Cardiovascular disease (CVD) remains the leading cause of pregnancy-related mortality in the United States, and accounted for approximately 17 deaths per 100,000 live births in 2015, wrote Laxmi S. Mehta, MD, of The Ohio State University, Columbus, and colleagues.

Ideally, a woman with CVD at the time of pregnancy should be managed by a multidisciplinary cardio-obstetrics team that can assess cardiovascular risk, obstetric risk, and fetal risk throughout pregnancy, delivery, and up to a year post partum. The team should develop a shared strategy to promote best outcomes, according to the statement. The cardio-obstetrics team may include obstetricians, cardiologists, anesthesiologists, maternal-fetal medicine specialists, geneticists, neurologists, nurses, and pharmacists, according to the statement.

Women with preexisting CVD should receive counseling about maternal and fetal risks before conception, if possible, to involve the women in shared decision-making and to develop strategies for each stage of pregnancy and delivery, Dr. Mehta and associates said. Such counseling should include a review of all medications and assessment of risk factors.

However, some women present already in the early stages of pregnancy even with severe conditions such as pulmonary arterial hypertension, severe ventricular dysfunction, severe left-sided heart obstruction, and significant aortic dilatation with underlying connective tissue disease. Women with these conditions often are counseled to avoid pregnancy, but if they already are pregnant, a high-risk cardio-obstetrics team will need to work together to discover the best strategies going forward to mitigate risk, Dr. Mehta and associates said.

Common CVD conditions that affect pregnancy include hypertensive disorders, notably preeclampsia, defined as systolic blood pressure greater than 140 mm Hg or diastolic blood pressure greater than 90 mm Hg in women after 20 weeks of gestation whose blood pressure was normal prior to pregnancy. A management strategy to reduce the risk of pregnancy-related complications from hypertension includes healthy lifestyle behaviors such as exercise, nutrition, and smoking cessation, according to the statement. However, patients with severe hypertension may require intravenous labetalol or hydralazine. The statement gives more information about handling preeclampsia with pulmonary edema, and prevention of eclampsia and treatment of seizures.

It is important to recognize that severe hypertension or superimposed preeclampsia may occur for the first time post partum. Early ambulatory visits in the first 1-2 weeks are sensible. Medications may be needed to keep a systolic blood pressure not higher than 150 mm Hg and a diastolic blood pressure not higher than 100 mm Hg, Dr. Mehta and associates said.

According to the statement, severe hypertriglyceridemia and familial hypercholesterolemia are the two most common conditions in which lipids should be addressed during pregnancy, with consideration of the fetal risks associated with certain medications.

“Statins are contraindicated during pregnancy, and all women who are on any lipid-lowering agents should review with their physician the safety of treatment during pregnancy and whether to discontinue treatment before pregnancy,” according to the statement. A heart-healthy lifestyle can help improve lipid profiles in all pregnant patients, Dr. Mehta and associates said. Patients with extremely high triglycerides above 500 mg/dL are at risk of pancreatitis and “may benefit from pharmacological agents (omega-3 fatty acids with or without fenofibrate or gemfibrozil) during the second trimester,” they noted. Pregnant women with familial hypercholesterolemia might take bile acid sequestrants, or as a last resort, low-density lipoprotein apheresis.

Other conditions calling for a multidisciplinary cardio-obstetric approach include preexisting coronary artery disease, cardiomyopathies, arrhythmias, valvular heart disease, cerebrovascular disease, and deep venous thrombosis, according to the statement, which provides information about the risks, diagnosis, and management.

When it is time for delivery, spontaneous labor and vaginal birth are preferable for most women with heart disease, as cesarean delivery is associated with increased risk of infection, thrombotic complications, and blood loss, according to the statement.

Women with CVD and associated complications will require “specialized long-term cardiovascular follow-up,” Dr. Mehta and associates said. “In women with a high-risk pregnancy, a cardio-obstetrics team is essential to prevent maternal morbidity and mortality during the length of the pregnancy and post partum.”

“The release of this document demonstrates the AHA’s recognition of the importance of CVD in pregnancy-related death and their commitment to education and ensuring best practices in this field,” said Lisa M. Hollier, MD, past president of the American College of Obstetricians and Gynecologists and chief medical officer at Texas Children’s Health Plan, Bellaire.

“I think one of the most important outcomes from the release of this scientific statement from AHA will be increased implementation of cardio-obstetrics teams,” she said in an interview.

“In the United States, cardiovascular disease and cardiomyopathy together are now the leading cause of death in pregnancy and the postpartum period, and constitute 26.5% of pregnancy-related deaths, with higher rates of mortality among women of color and women with lower incomes,” she said. “The rising trend in cardiovascular-related maternal deaths appears to be due to acquired, not congenital, heart disease.”

During her tenure as president of ACOG, Dr. Hollier convened a task force on cardiovascular disease in pregnancy that developed guidance that outlines screening, diagnosis, and management of CVD for women from prepregnancy through post partum.

Dr. Hollier noted that COVID-19 emphasizes racial disparities for maternal mortality.

“Pregnant patients with comorbidities, like heart conditions, may be at increased risk for severe illness from COVID-19 – consistent with the general population with similar comorbidities,” she said. “And as we know, black women’s risk of dying from CVD-related pregnancy complications is 3.4 times higher than that of white women. During the COVID-19 pandemic, we are seeing these racial health disparities exacerbated.”

However, any pregnant patients should not hesitate to communicate with their health care providers despite the pandemic situation, Dr. Hollier emphasized. “Communication between a patient and her ob.gyn., cardiologist, or other clinician is even more critical now during the COVID-19 pandemic. We’re hearing reports that patients who are experiencing symptoms or those with known cardiac conditions are avoiding the hospital and delaying or not seeking necessary treatment. This has the very real possibility of worsening the devastating maternal mortality crisis that we’re already experiencing in this country.”

To help overcome barriers to treatment, “collaboration between ob.gyns. and cardiologists, such as the cardio-obstetrics team or pregnancy heart team, is critical,” said Dr. Hollier. “These collaborative teams with a multidisciplinary approach can prospectively reduce the communication gaps across specialties when patients are seen separately. They can also improve the communication during care transitions such as between outpatient and inpatient care.


“In reviews of maternal deaths, we have found that there are often delays in diagnosis of heart conditions during and after pregnancy,” Dr. Hollier added. “Most maternal deaths from CVD are due to either undiagnosed cardiovascular disease or new-onset cardiomyopathy. ACOG recommends that all women be assessed for cardiovascular disease in the antepartum and postpartum periods using a recently developed algorithm,” she said. “Women who have known CVD and women who have concerning symptoms should have a consultation with this team. With increased awareness and screening, women can receive the additional care that they need.

“Because management of cardiac conditions in pregnancy is so complex, it is important to ensure that women receive care with teams and in facilities that have appropriate resources,” explained Dr. Hollier. “Women with known heart disease should see a cardiologist prior to pregnancy and receive prepregnancy counseling,” as noted in the AHA statement. “Patients determined to have moderate and high-risk CVD should be managed during pregnancy, delivery, and post partum in a medical center that is able to provide a higher level of care, including a cardio-obstetrics team.”

Early recognition of cardiovascular conditions is essential to help manage care and reduce risks to mother and baby, said Dr. Hollier. “Identification before a woman becomes pregnant means the patient’s care can be properly managed throughout the pregnancy and a detailed delivery plan can be developed through shared decision making between the patient and provider. We must think of heart disease as a possibility in every pregnant or postpartum patient we see to detect and treat at-risk mothers,” she said.

Additional research should focus on identifying risk factors prior to pregnancy, said Dr. Hollier. “There are often delays in recognizing symptoms during pregnancy and post partum, particularly for black women. We need data to understand which protocols are best to identify heart disease,”

Dr. Hollier had no financial conflicts to disclose. The authors of the AHA statement had no financial conflicts to disclose. The scientific statement was produced on behalf of the American Heart Association Council on Clinical Cardiology; Council on Atherosclerosis, Thrombosis and Vascular Biology; Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

SOURCE: Mehta LS et al. Circulation. 2020 May 4. doi: 10.1161/CIR.0000000000000772.

Women with cardiovascular conditions who are planning pregnancy should be assessed and managed by a multidisciplinary team to ensure the best outcomes, according to a statement from the American Heart Association.

©American Heart Association

Cardiovascular disease (CVD) remains the leading cause of pregnancy-related mortality in the United States, and accounted for approximately 17 deaths per 100,000 live births in 2015, wrote Laxmi S. Mehta, MD, of The Ohio State University, Columbus, and colleagues.

Ideally, a woman with CVD at the time of pregnancy should be managed by a multidisciplinary cardio-obstetrics team that can assess cardiovascular risk, obstetric risk, and fetal risk throughout pregnancy, delivery, and up to a year post partum. The team should develop a shared strategy to promote best outcomes, according to the statement. The cardio-obstetrics team may include obstetricians, cardiologists, anesthesiologists, maternal-fetal medicine specialists, geneticists, neurologists, nurses, and pharmacists, according to the statement.

Women with preexisting CVD should receive counseling about maternal and fetal risks before conception, if possible, to involve the women in shared decision-making and to develop strategies for each stage of pregnancy and delivery, Dr. Mehta and associates said. Such counseling should include a review of all medications and assessment of risk factors.

However, some women present already in the early stages of pregnancy even with severe conditions such as pulmonary arterial hypertension, severe ventricular dysfunction, severe left-sided heart obstruction, and significant aortic dilatation with underlying connective tissue disease. Women with these conditions often are counseled to avoid pregnancy, but if they already are pregnant, a high-risk cardio-obstetrics team will need to work together to discover the best strategies going forward to mitigate risk, Dr. Mehta and associates said.

Common CVD conditions that affect pregnancy include hypertensive disorders, notably preeclampsia, defined as systolic blood pressure greater than 140 mm Hg or diastolic blood pressure greater than 90 mm Hg in women after 20 weeks of gestation whose blood pressure was normal prior to pregnancy. A management strategy to reduce the risk of pregnancy-related complications from hypertension includes healthy lifestyle behaviors such as exercise, nutrition, and smoking cessation, according to the statement. However, patients with severe hypertension may require intravenous labetalol or hydralazine. The statement gives more information about handling preeclampsia with pulmonary edema, and prevention of eclampsia and treatment of seizures.

It is important to recognize that severe hypertension or superimposed preeclampsia may occur for the first time post partum. Early ambulatory visits in the first 1-2 weeks are sensible. Medications may be needed to keep a systolic blood pressure not higher than 150 mm Hg and a diastolic blood pressure not higher than 100 mm Hg, Dr. Mehta and associates said.

According to the statement, severe hypertriglyceridemia and familial hypercholesterolemia are the two most common conditions in which lipids should be addressed during pregnancy, with consideration of the fetal risks associated with certain medications.

“Statins are contraindicated during pregnancy, and all women who are on any lipid-lowering agents should review with their physician the safety of treatment during pregnancy and whether to discontinue treatment before pregnancy,” according to the statement. A heart-healthy lifestyle can help improve lipid profiles in all pregnant patients, Dr. Mehta and associates said. Patients with extremely high triglycerides above 500 mg/dL are at risk of pancreatitis and “may benefit from pharmacological agents (omega-3 fatty acids with or without fenofibrate or gemfibrozil) during the second trimester,” they noted. Pregnant women with familial hypercholesterolemia might take bile acid sequestrants, or as a last resort, low-density lipoprotein apheresis.

Other conditions calling for a multidisciplinary cardio-obstetric approach include preexisting coronary artery disease, cardiomyopathies, arrhythmias, valvular heart disease, cerebrovascular disease, and deep venous thrombosis, according to the statement, which provides information about the risks, diagnosis, and management.

When it is time for delivery, spontaneous labor and vaginal birth are preferable for most women with heart disease, as cesarean delivery is associated with increased risk of infection, thrombotic complications, and blood loss, according to the statement.

Women with CVD and associated complications will require “specialized long-term cardiovascular follow-up,” Dr. Mehta and associates said. “In women with a high-risk pregnancy, a cardio-obstetrics team is essential to prevent maternal morbidity and mortality during the length of the pregnancy and post partum.”

“The release of this document demonstrates the AHA’s recognition of the importance of CVD in pregnancy-related death and their commitment to education and ensuring best practices in this field,” said Lisa M. Hollier, MD, past president of the American College of Obstetricians and Gynecologists and chief medical officer at Texas Children’s Health Plan, Bellaire.

“I think one of the most important outcomes from the release of this scientific statement from AHA will be increased implementation of cardio-obstetrics teams,” she said in an interview.

“In the United States, cardiovascular disease and cardiomyopathy together are now the leading cause of death in pregnancy and the postpartum period, and constitute 26.5% of pregnancy-related deaths, with higher rates of mortality among women of color and women with lower incomes,” she said. “The rising trend in cardiovascular-related maternal deaths appears to be due to acquired, not congenital, heart disease.”

During her tenure as president of ACOG, Dr. Hollier convened a task force on cardiovascular disease in pregnancy that developed guidance that outlines screening, diagnosis, and management of CVD for women from prepregnancy through post partum.

Dr. Hollier noted that COVID-19 emphasizes racial disparities for maternal mortality.

“Pregnant patients with comorbidities, like heart conditions, may be at increased risk for severe illness from COVID-19 – consistent with the general population with similar comorbidities,” she said. “And as we know, black women’s risk of dying from CVD-related pregnancy complications is 3.4 times higher than that of white women. During the COVID-19 pandemic, we are seeing these racial health disparities exacerbated.”

However, any pregnant patients should not hesitate to communicate with their health care providers despite the pandemic situation, Dr. Hollier emphasized. “Communication between a patient and her ob.gyn., cardiologist, or other clinician is even more critical now during the COVID-19 pandemic. We’re hearing reports that patients who are experiencing symptoms or those with known cardiac conditions are avoiding the hospital and delaying or not seeking necessary treatment. This has the very real possibility of worsening the devastating maternal mortality crisis that we’re already experiencing in this country.”

To help overcome barriers to treatment, “collaboration between ob.gyns. and cardiologists, such as the cardio-obstetrics team or pregnancy heart team, is critical,” said Dr. Hollier. “These collaborative teams with a multidisciplinary approach can prospectively reduce the communication gaps across specialties when patients are seen separately. They can also improve the communication during care transitions such as between outpatient and inpatient care.


“In reviews of maternal deaths, we have found that there are often delays in diagnosis of heart conditions during and after pregnancy,” Dr. Hollier added. “Most maternal deaths from CVD are due to either undiagnosed cardiovascular disease or new-onset cardiomyopathy. ACOG recommends that all women be assessed for cardiovascular disease in the antepartum and postpartum periods using a recently developed algorithm,” she said. “Women who have known CVD and women who have concerning symptoms should have a consultation with this team. With increased awareness and screening, women can receive the additional care that they need.

“Because management of cardiac conditions in pregnancy is so complex, it is important to ensure that women receive care with teams and in facilities that have appropriate resources,” explained Dr. Hollier. “Women with known heart disease should see a cardiologist prior to pregnancy and receive prepregnancy counseling,” as noted in the AHA statement. “Patients determined to have moderate and high-risk CVD should be managed during pregnancy, delivery, and post partum in a medical center that is able to provide a higher level of care, including a cardio-obstetrics team.”

Early recognition of cardiovascular conditions is essential to help manage care and reduce risks to mother and baby, said Dr. Hollier. “Identification before a woman becomes pregnant means the patient’s care can be properly managed throughout the pregnancy and a detailed delivery plan can be developed through shared decision making between the patient and provider. We must think of heart disease as a possibility in every pregnant or postpartum patient we see to detect and treat at-risk mothers,” she said.

Additional research should focus on identifying risk factors prior to pregnancy, said Dr. Hollier. “There are often delays in recognizing symptoms during pregnancy and post partum, particularly for black women. We need data to understand which protocols are best to identify heart disease,”

Dr. Hollier had no financial conflicts to disclose. The authors of the AHA statement had no financial conflicts to disclose. The scientific statement was produced on behalf of the American Heart Association Council on Clinical Cardiology; Council on Atherosclerosis, Thrombosis and Vascular Biology; Council on Cardiovascular and Stroke Nursing; and the Stroke Council.

SOURCE: Mehta LS et al. Circulation. 2020 May 4. doi: 10.1161/CIR.0000000000000772.

As COVID-19 case levels plateau in some regions, 16 North American cardiovascular societies have released a framework for reintroducing cardiovascular services disrupted by the pandemic.

The consensus document outlines a phased approach to restarting invasive cardiovascular (CV) procedures and diagnostic tests that aims to reduce patient and health care provider exposure to the coronavirus and still provide essential care. It also emphasizes some of the ethical considerations in patient selection and the need for a collaborative approach.

“The key message in our document is we need a new unprecedented collaboration with public health officials so that we can carefully monitor the situation and we’re aware of what’s happening with the penetrance of the pandemic in the community, but they’re aware of the morbidity and mortality that’s occurring on our ever-growing waiting list,” lead author David A. Wood, MD, told theheart.org | Medscape Cardiology.

The recommendations were jointly published May 4 in the Canadian Journal of Cardiology , the Journal of the American College of Cardiology, and The Annals of Thoracic Surgery, and are endorsed by, among others, the American Heart Association, American College of Cardiology (ACC), and Canadian Cardiovascular Society.

The guidance comes as hospitals are facing revenue shortfalls because of canceled elective procedures and resource-intensive COVID-19 cases, prompting some healthcare systems to furlough, lay off, or even fire staff.

“It’s obvious that volumes are down between 40% and 60%,” said Wood, director of the cardiac catheterization laboratory at Vancouver General Hospital and professor of medicine at the University of British Columbia, Canada. “Part of that is that some areas have restricted case volumes totally appropriately and it’s partly because patients are very afraid of coming to the hospital and, unfortunately, are having bad events at home. And some are dying.”

The new report features a detailed table outlining three different response levels: reintroduction of some services (level 2); reintroduction of most services (level 1); and regular services (level 0). It covers a range of services from transthoracic echocardiography and exercise testing with imaging to care for acute coronary syndrome and ST-segment elevation myocardial infarction.

“We’ve learned that we can very quickly turn off the tap and go to doing only 10% of our normal volumes, whether that’s surgery, cath lab, EP, diagnostic tests,” Wood said. “It’s much more difficult to thoughtfully turn the tap part way back on or restart the engine … you don’t just go from 0 to 100 [mph]. You go from 0 to 30 to 60 then maybe to 80 [mph].”

The document also includes eight guiding principles such as:
 

• The expectation that response levels will be different between regions, and even within a given region.
• A “transparent collaborative plan” for COVID-19 testing and personal protective equipment (PPE) must be in place before restarting cases.
• A less invasive test or alternate imaging modality should be considered, if both tests have similar efficacy.
• In general, a minimally invasive procedure with a shorter length of stay is preferable, if both strategies have similar efficacy and safety.

Although previous reports on cath lab considerations during the pandemic or restarting elective surgeries peg various actions to specific thresholds or time intervals, the language here is noticeably and intentionally broad.

Instead of stating when cardiovascular services should resume, for example, the experts say it’s appropriate to put the guidance document into place if there’s a “sustained reduction” in the rate of new COVID-19 admissions and deaths in the relevant geographic region for a “prespecified time interval.”

As for when or how frequently patients and healthcare providers should be tested for COVID-19, the document encourages “routine screening of all patients prior to any cardiovascular procedure or test.”

Overly prescriptive language in previous documents wasn’t felt to be that helpful, whereas language like “selective” cases and “some” or “most” cardiovascular procedures gives clinicians, health systems, and policy makers flexibility when moving between response levels, Wood explained.

“Different regions might be at different levels based on principles of public health as far as the penetrance of the pandemic in that community, as well as how can you actually do the physical distancing in your hospital or ambulatory clinic. Because, I tell you, that is the Achilles heel,” he said. “Our run rates are going to be determined by testing, the availability of PPE, but also how we’re going to use our existing infrastructure and maintain physical distancing.”

That may mean using telehealth for initial visits, having clinics open earlier in the morning or on weekends, or doing partial volumes for surgery or in the cath lab so patients can be staggered and recover at different times and in different areas of the hospital. “These are very granular, specific infrastructure things that we’ve never really had to consider before,” Wood observed.

The document also had to be flexible and nimble enough to respond to a potential rebound of COVID-19 cases, which in newly released models are projected to rise sharply to 200,000 cases a day and be accompanied by some 3,000 deaths each day by June 1.

“This is my own personal opinion but I think it’s foolish to think that we are going to be able to come back to 100% of the cases we were doing before, even with testing, PPE, and all of that until we have a vaccine,” he said.

Similar to decisions made in preparation for the initial COVID-19 surge, the consensus document outlines the need for ethical considerations when turning the tap back on. This means prioritizing procedures and tests that are likely to benefit more people and to a greater degree, and ensuring that patients are treated fairly and consistently, regardless of their ethnicity, perceived social worth, or ability to pay, said coauthor and ACC President Athena Poppas, MD, Brown University School of Medicine, Providence, Rhode Island.

“It’s an ethical tenet that exists in a lot of places but it’s usually not overtly called out,” Poppas told theheart.org | Medscape Cardiology. “It’s not rationing care; I think people jump to that but it’s actually the opposite of rationing care. It’s about being thoughtful about prioritizing patients.”

“There’s a variety of data that should help in the prioritization, not only how much hospital resources are utilized, that’s on one side, but there’s also the patient risk of delaying or doing a procedure, and then the societal risk,” she said.

Susheel Kodali, MD, of New York–Presbyterian Hospital/Columbia University Irving Medical Center, who recently published recommendations on restructuring structural heart disease practice during the pandemic, said the document is timely as centers, including his own, are trying to restart some outpatient visits, as early as next week.

“They made a point about talking about cohesive partnerships with regional public health officials and I think that’s great. The question is how does that happen,” he told theheart.org | Medscape Cardiology. “In New York, we’re not allowed to do elective cases but what’s considered elective is not so clearly defined. An AS [aortic stenosis] patient that had a syncopal episode 2 weeks ago, is that considered elective or is that semi-urgent? I think that’s one of the challenges and that’s where these partnerships would be useful.”

Other challenges include the need for regional partnerships to better align hospitals, which in the New York area means half a dozen large healthcare systems, and to coordinate care between hospital departments – all of which will be scheduling imaging and OR time for their own backlog of hernia, knee, or hip surgeries.

Finally, there’s the need for a lot of conversation with the patient and their family about returning to a hospital amid a deadly pandemic.

“I had a patient today and the daughter was very concerned about bringing her in,” Kodali said. “She’s in class IV heart failure but her [daughter’s] big concern was: who is she going to be exposed to when she gets the echo? What kind of protection is there for her? Is the tech wearing a mask?

“It’s not just the health care providers that have to have the comfort, but it’s the patients and their families who have to feel comfortable bringing their loved ones here for treatment,” he said. “Because everyone is concerned about the environment.”

Wood reports receiving unrestricted grant support from Edwards Lifesciences and Abbott Vascular and serving as a consultant for Edwards Lifesciences, Medtronic, Abbott Vascular, and Boston Scientific. Poppas reports no relevant conflicts of interest. Kodali reports consultant (honoraria) from Admedus, Meril Life Sciences, JenaValve, and Abbott Vascular; SAB (equity) from Dura Biotech, MicroInterventional Devices, Thubrikar Aortic Valve, Supira, and Admedus; and institutional funding from Edwards Lifesciences, Medtronic, Abbott Vascular, Boston Scientific, and JenaValve.

This article first appeared on Medscape.com.

As COVID-19 case levels plateau in some regions, 16 North American cardiovascular societies have released a framework for reintroducing cardiovascular services disrupted by the pandemic.

The consensus document outlines a phased approach to restarting invasive cardiovascular (CV) procedures and diagnostic tests that aims to reduce patient and health care provider exposure to the coronavirus and still provide essential care. It also emphasizes some of the ethical considerations in patient selection and the need for a collaborative approach.

“The key message in our document is we need a new unprecedented collaboration with public health officials so that we can carefully monitor the situation and we’re aware of what’s happening with the penetrance of the pandemic in the community, but they’re aware of the morbidity and mortality that’s occurring on our ever-growing waiting list,” lead author David A. Wood, MD, told theheart.org | Medscape Cardiology.

The recommendations were jointly published May 4 in the Canadian Journal of Cardiology , the Journal of the American College of Cardiology, and The Annals of Thoracic Surgery, and are endorsed by, among others, the American Heart Association, American College of Cardiology (ACC), and Canadian Cardiovascular Society.

The guidance comes as hospitals are facing revenue shortfalls because of canceled elective procedures and resource-intensive COVID-19 cases, prompting some healthcare systems to furlough, lay off, or even fire staff.

“It’s obvious that volumes are down between 40% and 60%,” said Wood, director of the cardiac catheterization laboratory at Vancouver General Hospital and professor of medicine at the University of British Columbia, Canada. “Part of that is that some areas have restricted case volumes totally appropriately and it’s partly because patients are very afraid of coming to the hospital and, unfortunately, are having bad events at home. And some are dying.”

The new report features a detailed table outlining three different response levels: reintroduction of some services (level 2); reintroduction of most services (level 1); and regular services (level 0). It covers a range of services from transthoracic echocardiography and exercise testing with imaging to care for acute coronary syndrome and ST-segment elevation myocardial infarction.

“We’ve learned that we can very quickly turn off the tap and go to doing only 10% of our normal volumes, whether that’s surgery, cath lab, EP, diagnostic tests,” Wood said. “It’s much more difficult to thoughtfully turn the tap part way back on or restart the engine … you don’t just go from 0 to 100 [mph]. You go from 0 to 30 to 60 then maybe to 80 [mph].”

The document also includes eight guiding principles such as:
 

• The expectation that response levels will be different between regions, and even within a given region.
• A “transparent collaborative plan” for COVID-19 testing and personal protective equipment (PPE) must be in place before restarting cases.
• A less invasive test or alternate imaging modality should be considered, if both tests have similar efficacy.
• In general, a minimally invasive procedure with a shorter length of stay is preferable, if both strategies have similar efficacy and safety.

Although previous reports on cath lab considerations during the pandemic or restarting elective surgeries peg various actions to specific thresholds or time intervals, the language here is noticeably and intentionally broad.

Instead of stating when cardiovascular services should resume, for example, the experts say it’s appropriate to put the guidance document into place if there’s a “sustained reduction” in the rate of new COVID-19 admissions and deaths in the relevant geographic region for a “prespecified time interval.”

As for when or how frequently patients and healthcare providers should be tested for COVID-19, the document encourages “routine screening of all patients prior to any cardiovascular procedure or test.”

Overly prescriptive language in previous documents wasn’t felt to be that helpful, whereas language like “selective” cases and “some” or “most” cardiovascular procedures gives clinicians, health systems, and policy makers flexibility when moving between response levels, Wood explained.

“Different regions might be at different levels based on principles of public health as far as the penetrance of the pandemic in that community, as well as how can you actually do the physical distancing in your hospital or ambulatory clinic. Because, I tell you, that is the Achilles heel,” he said. “Our run rates are going to be determined by testing, the availability of PPE, but also how we’re going to use our existing infrastructure and maintain physical distancing.”

That may mean using telehealth for initial visits, having clinics open earlier in the morning or on weekends, or doing partial volumes for surgery or in the cath lab so patients can be staggered and recover at different times and in different areas of the hospital. “These are very granular, specific infrastructure things that we’ve never really had to consider before,” Wood observed.

The document also had to be flexible and nimble enough to respond to a potential rebound of COVID-19 cases, which in newly released models are projected to rise sharply to 200,000 cases a day and be accompanied by some 3,000 deaths each day by June 1.

“This is my own personal opinion but I think it’s foolish to think that we are going to be able to come back to 100% of the cases we were doing before, even with testing, PPE, and all of that until we have a vaccine,” he said.

Similar to decisions made in preparation for the initial COVID-19 surge, the consensus document outlines the need for ethical considerations when turning the tap back on. This means prioritizing procedures and tests that are likely to benefit more people and to a greater degree, and ensuring that patients are treated fairly and consistently, regardless of their ethnicity, perceived social worth, or ability to pay, said coauthor and ACC President Athena Poppas, MD, Brown University School of Medicine, Providence, Rhode Island.

“It’s an ethical tenet that exists in a lot of places but it’s usually not overtly called out,” Poppas told theheart.org | Medscape Cardiology. “It’s not rationing care; I think people jump to that but it’s actually the opposite of rationing care. It’s about being thoughtful about prioritizing patients.”

“There’s a variety of data that should help in the prioritization, not only how much hospital resources are utilized, that’s on one side, but there’s also the patient risk of delaying or doing a procedure, and then the societal risk,” she said.

Susheel Kodali, MD, of New York–Presbyterian Hospital/Columbia University Irving Medical Center, who recently published recommendations on restructuring structural heart disease practice during the pandemic, said the document is timely as centers, including his own, are trying to restart some outpatient visits, as early as next week.

“They made a point about talking about cohesive partnerships with regional public health officials and I think that’s great. The question is how does that happen,” he told theheart.org | Medscape Cardiology. “In New York, we’re not allowed to do elective cases but what’s considered elective is not so clearly defined. An AS [aortic stenosis] patient that had a syncopal episode 2 weeks ago, is that considered elective or is that semi-urgent? I think that’s one of the challenges and that’s where these partnerships would be useful.”

Other challenges include the need for regional partnerships to better align hospitals, which in the New York area means half a dozen large healthcare systems, and to coordinate care between hospital departments – all of which will be scheduling imaging and OR time for their own backlog of hernia, knee, or hip surgeries.

Finally, there’s the need for a lot of conversation with the patient and their family about returning to a hospital amid a deadly pandemic.

“I had a patient today and the daughter was very concerned about bringing her in,” Kodali said. “She’s in class IV heart failure but her [daughter’s] big concern was: who is she going to be exposed to when she gets the echo? What kind of protection is there for her? Is the tech wearing a mask?

“It’s not just the health care providers that have to have the comfort, but it’s the patients and their families who have to feel comfortable bringing their loved ones here for treatment,” he said. “Because everyone is concerned about the environment.”

Wood reports receiving unrestricted grant support from Edwards Lifesciences and Abbott Vascular and serving as a consultant for Edwards Lifesciences, Medtronic, Abbott Vascular, and Boston Scientific. Poppas reports no relevant conflicts of interest. Kodali reports consultant (honoraria) from Admedus, Meril Life Sciences, JenaValve, and Abbott Vascular; SAB (equity) from Dura Biotech, MicroInterventional Devices, Thubrikar Aortic Valve, Supira, and Admedus; and institutional funding from Edwards Lifesciences, Medtronic, Abbott Vascular, Boston Scientific, and JenaValve.

This article first appeared on Medscape.com.

As COVID-19 case levels plateau in some regions, 16 North American cardiovascular societies have released a framework for reintroducing cardiovascular services disrupted by the pandemic.

The consensus document outlines a phased approach to restarting invasive cardiovascular (CV) procedures and diagnostic tests that aims to reduce patient and health care provider exposure to the coronavirus and still provide essential care. It also emphasizes some of the ethical considerations in patient selection and the need for a collaborative approach.

“The key message in our document is we need a new unprecedented collaboration with public health officials so that we can carefully monitor the situation and we’re aware of what’s happening with the penetrance of the pandemic in the community, but they’re aware of the morbidity and mortality that’s occurring on our ever-growing waiting list,” lead author David A. Wood, MD, told theheart.org | Medscape Cardiology.

The recommendations were jointly published May 4 in the Canadian Journal of Cardiology , the Journal of the American College of Cardiology, and The Annals of Thoracic Surgery, and are endorsed by, among others, the American Heart Association, American College of Cardiology (ACC), and Canadian Cardiovascular Society.

The guidance comes as hospitals are facing revenue shortfalls because of canceled elective procedures and resource-intensive COVID-19 cases, prompting some healthcare systems to furlough, lay off, or even fire staff.

“It’s obvious that volumes are down between 40% and 60%,” said Wood, director of the cardiac catheterization laboratory at Vancouver General Hospital and professor of medicine at the University of British Columbia, Canada. “Part of that is that some areas have restricted case volumes totally appropriately and it’s partly because patients are very afraid of coming to the hospital and, unfortunately, are having bad events at home. And some are dying.”

The new report features a detailed table outlining three different response levels: reintroduction of some services (level 2); reintroduction of most services (level 1); and regular services (level 0). It covers a range of services from transthoracic echocardiography and exercise testing with imaging to care for acute coronary syndrome and ST-segment elevation myocardial infarction.

“We’ve learned that we can very quickly turn off the tap and go to doing only 10% of our normal volumes, whether that’s surgery, cath lab, EP, diagnostic tests,” Wood said. “It’s much more difficult to thoughtfully turn the tap part way back on or restart the engine … you don’t just go from 0 to 100 [mph]. You go from 0 to 30 to 60 then maybe to 80 [mph].”

The document also includes eight guiding principles such as:
 

• The expectation that response levels will be different between regions, and even within a given region.
• A “transparent collaborative plan” for COVID-19 testing and personal protective equipment (PPE) must be in place before restarting cases.
• A less invasive test or alternate imaging modality should be considered, if both tests have similar efficacy.
• In general, a minimally invasive procedure with a shorter length of stay is preferable, if both strategies have similar efficacy and safety.

Although previous reports on cath lab considerations during the pandemic or restarting elective surgeries peg various actions to specific thresholds or time intervals, the language here is noticeably and intentionally broad.

Instead of stating when cardiovascular services should resume, for example, the experts say it’s appropriate to put the guidance document into place if there’s a “sustained reduction” in the rate of new COVID-19 admissions and deaths in the relevant geographic region for a “prespecified time interval.”

As for when or how frequently patients and healthcare providers should be tested for COVID-19, the document encourages “routine screening of all patients prior to any cardiovascular procedure or test.”

Overly prescriptive language in previous documents wasn’t felt to be that helpful, whereas language like “selective” cases and “some” or “most” cardiovascular procedures gives clinicians, health systems, and policy makers flexibility when moving between response levels, Wood explained.

“Different regions might be at different levels based on principles of public health as far as the penetrance of the pandemic in that community, as well as how can you actually do the physical distancing in your hospital or ambulatory clinic. Because, I tell you, that is the Achilles heel,” he said. “Our run rates are going to be determined by testing, the availability of PPE, but also how we’re going to use our existing infrastructure and maintain physical distancing.”

That may mean using telehealth for initial visits, having clinics open earlier in the morning or on weekends, or doing partial volumes for surgery or in the cath lab so patients can be staggered and recover at different times and in different areas of the hospital. “These are very granular, specific infrastructure things that we’ve never really had to consider before,” Wood observed.

The document also had to be flexible and nimble enough to respond to a potential rebound of COVID-19 cases, which in newly released models are projected to rise sharply to 200,000 cases a day and be accompanied by some 3,000 deaths each day by June 1.

“This is my own personal opinion but I think it’s foolish to think that we are going to be able to come back to 100% of the cases we were doing before, even with testing, PPE, and all of that until we have a vaccine,” he said.

Similar to decisions made in preparation for the initial COVID-19 surge, the consensus document outlines the need for ethical considerations when turning the tap back on. This means prioritizing procedures and tests that are likely to benefit more people and to a greater degree, and ensuring that patients are treated fairly and consistently, regardless of their ethnicity, perceived social worth, or ability to pay, said coauthor and ACC President Athena Poppas, MD, Brown University School of Medicine, Providence, Rhode Island.

“It’s an ethical tenet that exists in a lot of places but it’s usually not overtly called out,” Poppas told theheart.org | Medscape Cardiology. “It’s not rationing care; I think people jump to that but it’s actually the opposite of rationing care. It’s about being thoughtful about prioritizing patients.”

“There’s a variety of data that should help in the prioritization, not only how much hospital resources are utilized, that’s on one side, but there’s also the patient risk of delaying or doing a procedure, and then the societal risk,” she said.

Susheel Kodali, MD, of New York–Presbyterian Hospital/Columbia University Irving Medical Center, who recently published recommendations on restructuring structural heart disease practice during the pandemic, said the document is timely as centers, including his own, are trying to restart some outpatient visits, as early as next week.

“They made a point about talking about cohesive partnerships with regional public health officials and I think that’s great. The question is how does that happen,” he told theheart.org | Medscape Cardiology. “In New York, we’re not allowed to do elective cases but what’s considered elective is not so clearly defined. An AS [aortic stenosis] patient that had a syncopal episode 2 weeks ago, is that considered elective or is that semi-urgent? I think that’s one of the challenges and that’s where these partnerships would be useful.”

Other challenges include the need for regional partnerships to better align hospitals, which in the New York area means half a dozen large healthcare systems, and to coordinate care between hospital departments – all of which will be scheduling imaging and OR time for their own backlog of hernia, knee, or hip surgeries.

Finally, there’s the need for a lot of conversation with the patient and their family about returning to a hospital amid a deadly pandemic.

“I had a patient today and the daughter was very concerned about bringing her in,” Kodali said. “She’s in class IV heart failure but her [daughter’s] big concern was: who is she going to be exposed to when she gets the echo? What kind of protection is there for her? Is the tech wearing a mask?

“It’s not just the health care providers that have to have the comfort, but it’s the patients and their families who have to feel comfortable bringing their loved ones here for treatment,” he said. “Because everyone is concerned about the environment.”

Wood reports receiving unrestricted grant support from Edwards Lifesciences and Abbott Vascular and serving as a consultant for Edwards Lifesciences, Medtronic, Abbott Vascular, and Boston Scientific. Poppas reports no relevant conflicts of interest. Kodali reports consultant (honoraria) from Admedus, Meril Life Sciences, JenaValve, and Abbott Vascular; SAB (equity) from Dura Biotech, MicroInterventional Devices, Thubrikar Aortic Valve, Supira, and Admedus; and institutional funding from Edwards Lifesciences, Medtronic, Abbott Vascular, Boston Scientific, and JenaValve.

This article first appeared on Medscape.com.

Diastolic dysfunction, a common and often undiagnosed condition in older individuals, could be contributing to the increasing burden of cognitive decline, a new study suggests. “We found people with worsening diastolic dysfunction have more white matter hyperintensities on brain imaging and greater difficulty with executive functioning, suggesting that diastolic dysfunction is a common modifiable risk factor for cognitive impairment,” said lead author Alicia S. Parker, MD. Dr. Parker is assistant professor of cognitive and behavioral neurology at the Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health, San Antonio.

“This is an entirely new finding. While there have been some small studies suggesting a link between diastolic dysfunction and a reduction in working memory, this is by far the largest dataset on this topic and the first study that has included brain imaging and neuropsychological measures,” she said.

“Diastolic dysfunction is very common in the older population, and we need to do more to find it and treat it to help prevent or reduce cognitive decline,” Dr. Parker added.

This research is being presented online as part of the 2020 American Academy of Neurology Science Highlights.

Dr. Parker explained that systolic dysfunction is known to have a major effect on cardiovascular outcomes and has been found to be associated with cognitive decline. Proposed mechanisms for cognitive decline in patients with systolic dysfunction include low cardiac output, embolic infarctions, and hypoxic changes, among others.

“There is increasing interest in analyzing the influence of diastolic dysfunction on cardiovascular outcomes, and the effects of diastolic dysfunction on cognition are not currently well delineated, which this study seeks to address,” she added.

“While these results are new, they are not surprising. In general, we are finding more and more that heart health is connected to brain health,” she commented.

Dr. Parker and her colleagues started the current research after noticing in clinic that among patients with significant diastolic dysfunction, there were often changes on brain MRI imaging, and the patients often had trouble with executive function. “The effect of diastolic dysfunction on cognition has not been well characterized, so we wanted to look at this,” she said.

The investigators analyzed data from the Framingham Heart Study Offspring Cohort at examination 8, collected between 2005 and 2008. The study sample included 1,438 individuals older than 55 years who had undergone neuropsychological assessment and echocardiographic diastolic measurement. Systolic measurements were normal for the participants, and they did not currently have dementia, stroke, or other neurologic illness.

Results showed that increasing E/E’ ratio (the ratio of mitral peak velocity of early filling to early diastolic mitral annular velocity) indicated increasing diastolic dysfunction and was associated with an increase in the incidence of mild cognitive impairment (hazard ratio, 1.29; 95% confidence interval, 1.01-1.66; P < .043).

An increased E/E’ ratio was associated with increased executive function impairment in the “similarities” (beta, –0.29; P < .002) and “phonemic fluency” (–1.28; P < .001) tasks.

Participants with moderate to severe diastolic dysfunction were more impaired with respect to both similarities (–0.62; P < .046) and phonemic fluency (–2.60; P < .023).

Data from 1,217 participants showed that among those with mild diastolic dysfunction, there was a trend toward an increase in white matter hyperintensities (0.11; P < .105). For participants with moderate to severe diastolic dysfunction, white matter hyperintensities were increased (0.30; P < 0.001).

The results were unchanged after the researchers adjusted for many other predictors of cognitive decline affecting diastolic function.

The researchers conclude: “As cerebral small vessel disease clinically presents with executive dysfunction, these results align well.” They add that replication in additional cohorts and analyses of cognition in treatment trials of diastolic dysfunction are warranted.

Earlier interventions

Commenting on the study, Marco R. Di Tullio, MD, professor of medicine and Columbia University Medical Center, New York City, who is also studying the relationship between subclinical cardiac abnormalities and cognition, said: “This is a promising area of research, as it might allow us to uncover novel risk factors for cognitive decline at an early stage, before the development of clinically manifest cardiac disease, which might allow earlier interventions to decrease or delay the onset of cognitive decline.”

Dr. Di Tullio added that he would like to know more about the interaction between diastolic dysfunction, MRI abnormalities, and cognitive impairment risk. “In this study, MRI abnormalities and cognitive impairment are treated as separate outcomes, with diastolic dysfunction being the exposure for each of them. An additional analysis of the association between diastolic dysfunction and cognitive impairment stratified by presence or absence of brain MRI findings would have been interesting.”

Dr. Parker responded that this is an area of investigation. “We suspect that our cognitive findings would not be explained by any one MRI measure, though a comprehensive examination of MRI findings would be of benefit. The thought that there may be a reversible cardiac abnormality that does not have a structural brain imaging correlate on MRI is an interesting possibility,” she said.

Dr. Di Tullio also pointed out that at present, there is no specific treatment for diastolic dysfunction other than to address some the conditions that predispose to it, such as hypertension and atrial fibrillation.

“We completely agree that specific treatments are an area of investigation and that treatment is therefore targeted at associated modifiable conditions,” Dr. Parker replied.

With regard to more specific estimates of the prevalence of diastolic dysfunction, Dr. Parker cites another Framingham analysis that involved 2,355 persons without any prevalent cardiovascular conditions. That study found that diastolic dysfunction was rare until 50 years of age and then gradually increased with age.

About 5% of people in their 50s had mild diastolic dysfunction, and about 3% had moderate to severe diastolic dysfunction. Among persons in their 60s, about 18% had mild and 5% had severe diastolic dysfunction. Among persons in their 70s, mild diastolic dysfunction occurred in 35%, and moderate to severe disease was present in 18%; and in persons older than 80 years, nearly half had mild and about 20% had moderate to severe diastolic dysfunction.

Dr. Parker has disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Diastolic dysfunction, a common and often undiagnosed condition in older individuals, could be contributing to the increasing burden of cognitive decline, a new study suggests. “We found people with worsening diastolic dysfunction have more white matter hyperintensities on brain imaging and greater difficulty with executive functioning, suggesting that diastolic dysfunction is a common modifiable risk factor for cognitive impairment,” said lead author Alicia S. Parker, MD. Dr. Parker is assistant professor of cognitive and behavioral neurology at the Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health, San Antonio.

“This is an entirely new finding. While there have been some small studies suggesting a link between diastolic dysfunction and a reduction in working memory, this is by far the largest dataset on this topic and the first study that has included brain imaging and neuropsychological measures,” she said.

“Diastolic dysfunction is very common in the older population, and we need to do more to find it and treat it to help prevent or reduce cognitive decline,” Dr. Parker added.

This research is being presented online as part of the 2020 American Academy of Neurology Science Highlights.

Dr. Parker explained that systolic dysfunction is known to have a major effect on cardiovascular outcomes and has been found to be associated with cognitive decline. Proposed mechanisms for cognitive decline in patients with systolic dysfunction include low cardiac output, embolic infarctions, and hypoxic changes, among others.

“There is increasing interest in analyzing the influence of diastolic dysfunction on cardiovascular outcomes, and the effects of diastolic dysfunction on cognition are not currently well delineated, which this study seeks to address,” she added.

“While these results are new, they are not surprising. In general, we are finding more and more that heart health is connected to brain health,” she commented.

Dr. Parker and her colleagues started the current research after noticing in clinic that among patients with significant diastolic dysfunction, there were often changes on brain MRI imaging, and the patients often had trouble with executive function. “The effect of diastolic dysfunction on cognition has not been well characterized, so we wanted to look at this,” she said.

The investigators analyzed data from the Framingham Heart Study Offspring Cohort at examination 8, collected between 2005 and 2008. The study sample included 1,438 individuals older than 55 years who had undergone neuropsychological assessment and echocardiographic diastolic measurement. Systolic measurements were normal for the participants, and they did not currently have dementia, stroke, or other neurologic illness.

Results showed that increasing E/E’ ratio (the ratio of mitral peak velocity of early filling to early diastolic mitral annular velocity) indicated increasing diastolic dysfunction and was associated with an increase in the incidence of mild cognitive impairment (hazard ratio, 1.29; 95% confidence interval, 1.01-1.66; P < .043).

An increased E/E’ ratio was associated with increased executive function impairment in the “similarities” (beta, –0.29; P < .002) and “phonemic fluency” (–1.28; P < .001) tasks.

Participants with moderate to severe diastolic dysfunction were more impaired with respect to both similarities (–0.62; P < .046) and phonemic fluency (–2.60; P < .023).

Data from 1,217 participants showed that among those with mild diastolic dysfunction, there was a trend toward an increase in white matter hyperintensities (0.11; P < .105). For participants with moderate to severe diastolic dysfunction, white matter hyperintensities were increased (0.30; P < 0.001).

The results were unchanged after the researchers adjusted for many other predictors of cognitive decline affecting diastolic function.

The researchers conclude: “As cerebral small vessel disease clinically presents with executive dysfunction, these results align well.” They add that replication in additional cohorts and analyses of cognition in treatment trials of diastolic dysfunction are warranted.

Earlier interventions

Commenting on the study, Marco R. Di Tullio, MD, professor of medicine and Columbia University Medical Center, New York City, who is also studying the relationship between subclinical cardiac abnormalities and cognition, said: “This is a promising area of research, as it might allow us to uncover novel risk factors for cognitive decline at an early stage, before the development of clinically manifest cardiac disease, which might allow earlier interventions to decrease or delay the onset of cognitive decline.”

Dr. Di Tullio added that he would like to know more about the interaction between diastolic dysfunction, MRI abnormalities, and cognitive impairment risk. “In this study, MRI abnormalities and cognitive impairment are treated as separate outcomes, with diastolic dysfunction being the exposure for each of them. An additional analysis of the association between diastolic dysfunction and cognitive impairment stratified by presence or absence of brain MRI findings would have been interesting.”

Dr. Parker responded that this is an area of investigation. “We suspect that our cognitive findings would not be explained by any one MRI measure, though a comprehensive examination of MRI findings would be of benefit. The thought that there may be a reversible cardiac abnormality that does not have a structural brain imaging correlate on MRI is an interesting possibility,” she said.

Dr. Di Tullio also pointed out that at present, there is no specific treatment for diastolic dysfunction other than to address some the conditions that predispose to it, such as hypertension and atrial fibrillation.

“We completely agree that specific treatments are an area of investigation and that treatment is therefore targeted at associated modifiable conditions,” Dr. Parker replied.

With regard to more specific estimates of the prevalence of diastolic dysfunction, Dr. Parker cites another Framingham analysis that involved 2,355 persons without any prevalent cardiovascular conditions. That study found that diastolic dysfunction was rare until 50 years of age and then gradually increased with age.

About 5% of people in their 50s had mild diastolic dysfunction, and about 3% had moderate to severe diastolic dysfunction. Among persons in their 60s, about 18% had mild and 5% had severe diastolic dysfunction. Among persons in their 70s, mild diastolic dysfunction occurred in 35%, and moderate to severe disease was present in 18%; and in persons older than 80 years, nearly half had mild and about 20% had moderate to severe diastolic dysfunction.

Dr. Parker has disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Diastolic dysfunction, a common and often undiagnosed condition in older individuals, could be contributing to the increasing burden of cognitive decline, a new study suggests. “We found people with worsening diastolic dysfunction have more white matter hyperintensities on brain imaging and greater difficulty with executive functioning, suggesting that diastolic dysfunction is a common modifiable risk factor for cognitive impairment,” said lead author Alicia S. Parker, MD. Dr. Parker is assistant professor of cognitive and behavioral neurology at the Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health, San Antonio.

“This is an entirely new finding. While there have been some small studies suggesting a link between diastolic dysfunction and a reduction in working memory, this is by far the largest dataset on this topic and the first study that has included brain imaging and neuropsychological measures,” she said.

“Diastolic dysfunction is very common in the older population, and we need to do more to find it and treat it to help prevent or reduce cognitive decline,” Dr. Parker added.

This research is being presented online as part of the 2020 American Academy of Neurology Science Highlights.

Dr. Parker explained that systolic dysfunction is known to have a major effect on cardiovascular outcomes and has been found to be associated with cognitive decline. Proposed mechanisms for cognitive decline in patients with systolic dysfunction include low cardiac output, embolic infarctions, and hypoxic changes, among others.

“There is increasing interest in analyzing the influence of diastolic dysfunction on cardiovascular outcomes, and the effects of diastolic dysfunction on cognition are not currently well delineated, which this study seeks to address,” she added.

“While these results are new, they are not surprising. In general, we are finding more and more that heart health is connected to brain health,” she commented.

Dr. Parker and her colleagues started the current research after noticing in clinic that among patients with significant diastolic dysfunction, there were often changes on brain MRI imaging, and the patients often had trouble with executive function. “The effect of diastolic dysfunction on cognition has not been well characterized, so we wanted to look at this,” she said.

The investigators analyzed data from the Framingham Heart Study Offspring Cohort at examination 8, collected between 2005 and 2008. The study sample included 1,438 individuals older than 55 years who had undergone neuropsychological assessment and echocardiographic diastolic measurement. Systolic measurements were normal for the participants, and they did not currently have dementia, stroke, or other neurologic illness.

Results showed that increasing E/E’ ratio (the ratio of mitral peak velocity of early filling to early diastolic mitral annular velocity) indicated increasing diastolic dysfunction and was associated with an increase in the incidence of mild cognitive impairment (hazard ratio, 1.29; 95% confidence interval, 1.01-1.66; P < .043).

An increased E/E’ ratio was associated with increased executive function impairment in the “similarities” (beta, –0.29; P < .002) and “phonemic fluency” (–1.28; P < .001) tasks.

Participants with moderate to severe diastolic dysfunction were more impaired with respect to both similarities (–0.62; P < .046) and phonemic fluency (–2.60; P < .023).

Data from 1,217 participants showed that among those with mild diastolic dysfunction, there was a trend toward an increase in white matter hyperintensities (0.11; P < .105). For participants with moderate to severe diastolic dysfunction, white matter hyperintensities were increased (0.30; P < 0.001).

The results were unchanged after the researchers adjusted for many other predictors of cognitive decline affecting diastolic function.

The researchers conclude: “As cerebral small vessel disease clinically presents with executive dysfunction, these results align well.” They add that replication in additional cohorts and analyses of cognition in treatment trials of diastolic dysfunction are warranted.

Earlier interventions

Commenting on the study, Marco R. Di Tullio, MD, professor of medicine and Columbia University Medical Center, New York City, who is also studying the relationship between subclinical cardiac abnormalities and cognition, said: “This is a promising area of research, as it might allow us to uncover novel risk factors for cognitive decline at an early stage, before the development of clinically manifest cardiac disease, which might allow earlier interventions to decrease or delay the onset of cognitive decline.”

Dr. Di Tullio added that he would like to know more about the interaction between diastolic dysfunction, MRI abnormalities, and cognitive impairment risk. “In this study, MRI abnormalities and cognitive impairment are treated as separate outcomes, with diastolic dysfunction being the exposure for each of them. An additional analysis of the association between diastolic dysfunction and cognitive impairment stratified by presence or absence of brain MRI findings would have been interesting.”

Dr. Parker responded that this is an area of investigation. “We suspect that our cognitive findings would not be explained by any one MRI measure, though a comprehensive examination of MRI findings would be of benefit. The thought that there may be a reversible cardiac abnormality that does not have a structural brain imaging correlate on MRI is an interesting possibility,” she said.

Dr. Di Tullio also pointed out that at present, there is no specific treatment for diastolic dysfunction other than to address some the conditions that predispose to it, such as hypertension and atrial fibrillation.

“We completely agree that specific treatments are an area of investigation and that treatment is therefore targeted at associated modifiable conditions,” Dr. Parker replied.

With regard to more specific estimates of the prevalence of diastolic dysfunction, Dr. Parker cites another Framingham analysis that involved 2,355 persons without any prevalent cardiovascular conditions. That study found that diastolic dysfunction was rare until 50 years of age and then gradually increased with age.

About 5% of people in their 50s had mild diastolic dysfunction, and about 3% had moderate to severe diastolic dysfunction. Among persons in their 60s, about 18% had mild and 5% had severe diastolic dysfunction. Among persons in their 70s, mild diastolic dysfunction occurred in 35%, and moderate to severe disease was present in 18%; and in persons older than 80 years, nearly half had mild and about 20% had moderate to severe diastolic dysfunction.

Dr. Parker has disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Background: Critically ill patients have a high risk of venous thromboembolism (VTE) during their hospitalizations, and it is standard of care to prophylax against this complication by either pharmacological or mechanical means.

The main limitation of the study was the low incidence of primary outcomes in the control group, which reduced the power of the study.

Bottom line: Based on the PREVENT trial, adjunctive intermittent pneumatic compression provided no additional benefit to pharmacological prophylaxis in the prevention of incident proximal lower-limb DVT.

Citation: Arabi Y et al. Adjunctive intermittent pneumatic compression for venous thromboprophylaxis. N Eng J Med. 2019 Feb 18. doi: 10.1056/NEJMoa1816150.

Dr. Sekaran is a hospitalist at Massachusetts General Hospital.

Background: Critically ill patients have a high risk of venous thromboembolism (VTE) during their hospitalizations, and it is standard of care to prophylax against this complication by either pharmacological or mechanical means.

The main limitation of the study was the low incidence of primary outcomes in the control group, which reduced the power of the study.

Bottom line: Based on the PREVENT trial, adjunctive intermittent pneumatic compression provided no additional benefit to pharmacological prophylaxis in the prevention of incident proximal lower-limb DVT.

Citation: Arabi Y et al. Adjunctive intermittent pneumatic compression for venous thromboprophylaxis. N Eng J Med. 2019 Feb 18. doi: 10.1056/NEJMoa1816150.

Dr. Sekaran is a hospitalist at Massachusetts General Hospital.

Background: Critically ill patients have a high risk of venous thromboembolism (VTE) during their hospitalizations, and it is standard of care to prophylax against this complication by either pharmacological or mechanical means.

The main limitation of the study was the low incidence of primary outcomes in the control group, which reduced the power of the study.

Bottom line: Based on the PREVENT trial, adjunctive intermittent pneumatic compression provided no additional benefit to pharmacological prophylaxis in the prevention of incident proximal lower-limb DVT.

Citation: Arabi Y et al. Adjunctive intermittent pneumatic compression for venous thromboprophylaxis. N Eng J Med. 2019 Feb 18. doi: 10.1056/NEJMoa1816150.

Dr. Sekaran is a hospitalist at Massachusetts General Hospital.

Treatment with a PCSK9 inhibitor, as well as achieving dramatically lowered cholesterol levels, did not mess with patients’ minds. Results from a cognition self-assessment completed by more than 22,000 patients when they finished participation in the FOURIER pivotal outcomes trial for evolocumab showed no signal of mental harm from either treatment with this PCSK9 inhibitor or from reaching a serum level of low-density lipoprotein cholesterol (LDL-C) of less than 20 mg/dL.

“We observed that patients treated with evolocumab, as well as those who achieved progressively very low LDL-C at 4 weeks in the FOURIER trial, had similar self-reported cognition in comparison with those receiving placebo and those with higher achieved LDL-C levels,” wrote a team of researchers from the trial in an article published online on May 4 (J Am Coll Cardiol. 2020 May 12;75[18]: 2283-93). “These data confirm the neurocognitive safety of intensive LDL-C reduction with evolocumab while reducing recurrent CV [cardiovascular] events in high-risk patients, and suggest that very low achieved LDL-C levels may be safely targeted for high-risk patients.”

The findings added to prior results documenting the cognitive safety of evolocumab (Repatha) from a much smaller FOURIER substudy that involved more intensive testing, the EBBINGHAUS (Evaluating PCSK9 Binding Antibody Influence on Cognitive Health in High Cardiovascular Risk Subjects) study with 1,204 patients drawn from the broader study and tested after a median 19 months on treatment (N Engl J Med. 2017 Aug 17;377[17]: 633-43), as well as reports of neurocognitive safety for the other U.S. approved PCSK9 (proprotein convertase subtilisin kexin 9) inhibitor, alirocumab (Praluent) (N Engl J Med. 2015 Apr 16;372[16]:1489-99), various statins (J Gen Intern Med. 2015 Mar;30[3]: 348-58), and a third type of LDL-C–lowering agent, ezetimibe (JAMA Cardiol. 2017 May;2[5]:547-55).

Despite this evidence from across several drug classes that all cut LDL-C a long-standing but unsubstantiated belief persists among some that lipid lowering, especially by statins, blunts mental function, misinformation that’s easy to find on the Internet. “I estimate that about 20% of patients prescribed a statin won’t take it because of something they’ve heard” including that statins make you stupid. “It’s hard to undo that,” said Robert P. Giugliano, MD, a cardiologist at Brigham and Women’s Hospital in Boston and senior author for the new FOURIER study as well as for EBBINGHAUS. The same stigma has not gained nearly as much traction for PCSK9 inhibitors, however, and Dr. Giugliano said he has also recently sensed what may be a downtrend in statin apprehension.

“The information added by this study is very important,” commented Massimo R. Mannarino, MD, an atherosclerotic disease researcher at the University of Perugia (Italy). “The prejudice and misinformation regarding possible side effects of statins among patients and also some physicians unfortunately remains very strong today,” he said in an interview. “My impression is that PCSK9 inhibitors are less affected by this negative bias and are seen as a safer alternative to statins.” Concerns about PCSK9 inhibitors have especially focused on “the possible risks from very low cholesterol levels on the brain.” The evidence from both studies and clinical experience “allows for a very positive opinion about the efficacy and safety of PCSK9 inhibitors, although the long-term effects still require a few more years of observation,” said Dr. Mannarino, who led a review of the evidence that clears this class from links to neurocognitive loss (J Clin Lipid. 2018 Sep 1;12[5]:1123-32).

FOURIER (Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk) randomized 27,564 patients with atherosclerotic cardiovascular disease and elevated LDL cholesterol despite maximally tolerated standard treatment. Treatment with evolocumab for a median of 2.2 years resulted in a statistically significant 15% reduction in the study’s primary efficacy endpoint, compared with placebo (N Engl J Med. 2017 May 4;376[18]:1713-22), and led to the drug receiving an indication for lowering rates of MI, stroke, and symptom-driven coronary revascularization.

The prespecified substudy reported by Dr. Giugliano and his associates focused on a 23-question, validated, self-assessment survey of cognitive function completed by 22,655 of the FOURIER patients (82%). The more than 4,900 other patients in the study who did not complete the survey had modestly higher prevalence rates of various comorbidities at baseline, and also higher rates of adverse outcomes during follow-up, and in many cases these adverse outcome may have contributed to these patients not being able to complete their end-of-study cognitive assessment. For example, almost a quarter of the patients who did not complete their end-of-study cognitive assessment failed to do so because they had already died.

Overall, the prevalence of patients indicating a cognitive decline was virtually identical among 11,363 patients who had been maintained on evolocumab, with a 3.7% rate, and the 11,292 patients in the placebo group, with a 3.6% rate. When analyzed by achieved level of LDL-C after 4 weeks on treatment, the 2,338 patients with a level below 20 mg/dL had a 3.8% rate of self-reported cognitive loss, compared with a 4.5% rate among 3,613 patients who had an LDL-C level of at least 100 mg/dL when measured 4 weeks into the study.

One of the strengths of the new cognitive analysis is that, although it did not use the more sophisticated assessment tests employed on fewer patients in the EBBINGHAUS substudy, it used the Everyday Cognition scale (Neuropsychiatry. 2008 Jul;22[4]: 531-44). “We asked patients what they have experienced, and in the end that is what’s important, so this adds to the neurocognitive testing,” run in EBBINGHAUS, Dr. Giugliano said in an interview.

“The neurocognitive results in the present study were self-reported, and that might be a limitation, as it is less specific and objective, but it is also a strength, as it could be more sensitive” especially for a “nocebo effect common to all lipid-lowering drugs linked to the bad reputation historically attributed to statins,” Dr. Mannarino said.

Should the new FOURIER data “be interpreted as definitive evidence that intensive LDL-C lowering with PCSK9 monoclonal antibodies has no major harmful cognitive effects, at least over a period of 3 years? The answer appears to be a qualified yes, but with three important caveats,” Jennifer G. Robinson, MD, a professor of epidemiology at the University of Iowa College of Public Health in Iowa City, said in an editorial that accompanied the new report (J Am Coll Cardiol. 2020 May 12;75[18]:2294-6). Her three caveats are the missing 18% of patients who never took the end-of-study assessment, the relative paucity of patients at very advanced age in FOURIER, in which patients averaged 62.5 years old, and the exclusion from FOURIER of patients with a history of hemorrhagic stroke. Dr. Robinson also cited the 2.2 year median follow-up as leaving unsettled the potential cognitive impact of longer treatment.

In response, Dr. Giugliano noted that the very large size of FOURIER and the 22,655 patients who completed their survey provided substantial numbers of patients to address some of these concerns in robust subgroup analyses. For example, the new report showed no signal of excess cognitive complaints with evolocumab treatment among 1,999 patients who were at least 75 years old when entering the study, or in more than 5,000 patients with a history of cerebrovascular disease at baseline, or in 1,990 patients with a history of a nonstroke neurologic disease. In addition, while he conceded that the 18% of patients not accounted for in the new study placed some limits on generalizability of the findings, he also maintained that this unavoidable failure to collect data from a modest percentage of patients doesn’t scuttle the overarching signal of cognitive safety for most patients. And regarding the duration of treatment monitored, he noted that 5-year follow-up cognitive assessments are planned.

FOURIER was sponsored by Amgen, the company that markets evolocumab (Repatha). Dr. Giugliano has received personal fees and research support from Amgen and from several other companies. Dr. Mannarino had no disclosures. Dr. Robinson has been a consultant to The Medicines Company, Novartis, and Pfizer, and she has received research funding to her institution from Amgen and several other companies.

mzoler@mdedge.com

SOURCE: Gencer B et al. J Am Coll Cardiol. 2020 May 12;75[18]:2283-93.

Correction: Dr. Giugliano's name was misspelled in an earlier version of this article.

Treatment with a PCSK9 inhibitor, as well as achieving dramatically lowered cholesterol levels, did not mess with patients’ minds. Results from a cognition self-assessment completed by more than 22,000 patients when they finished participation in the FOURIER pivotal outcomes trial for evolocumab showed no signal of mental harm from either treatment with this PCSK9 inhibitor or from reaching a serum level of low-density lipoprotein cholesterol (LDL-C) of less than 20 mg/dL.

“We observed that patients treated with evolocumab, as well as those who achieved progressively very low LDL-C at 4 weeks in the FOURIER trial, had similar self-reported cognition in comparison with those receiving placebo and those with higher achieved LDL-C levels,” wrote a team of researchers from the trial in an article published online on May 4 (J Am Coll Cardiol. 2020 May 12;75[18]: 2283-93). “These data confirm the neurocognitive safety of intensive LDL-C reduction with evolocumab while reducing recurrent CV [cardiovascular] events in high-risk patients, and suggest that very low achieved LDL-C levels may be safely targeted for high-risk patients.”

The findings added to prior results documenting the cognitive safety of evolocumab (Repatha) from a much smaller FOURIER substudy that involved more intensive testing, the EBBINGHAUS (Evaluating PCSK9 Binding Antibody Influence on Cognitive Health in High Cardiovascular Risk Subjects) study with 1,204 patients drawn from the broader study and tested after a median 19 months on treatment (N Engl J Med. 2017 Aug 17;377[17]: 633-43), as well as reports of neurocognitive safety for the other U.S. approved PCSK9 (proprotein convertase subtilisin kexin 9) inhibitor, alirocumab (Praluent) (N Engl J Med. 2015 Apr 16;372[16]:1489-99), various statins (J Gen Intern Med. 2015 Mar;30[3]: 348-58), and a third type of LDL-C–lowering agent, ezetimibe (JAMA Cardiol. 2017 May;2[5]:547-55).

Despite this evidence from across several drug classes that all cut LDL-C a long-standing but unsubstantiated belief persists among some that lipid lowering, especially by statins, blunts mental function, misinformation that’s easy to find on the Internet. “I estimate that about 20% of patients prescribed a statin won’t take it because of something they’ve heard” including that statins make you stupid. “It’s hard to undo that,” said Robert P. Giugliano, MD, a cardiologist at Brigham and Women’s Hospital in Boston and senior author for the new FOURIER study as well as for EBBINGHAUS. The same stigma has not gained nearly as much traction for PCSK9 inhibitors, however, and Dr. Giugliano said he has also recently sensed what may be a downtrend in statin apprehension.

“The information added by this study is very important,” commented Massimo R. Mannarino, MD, an atherosclerotic disease researcher at the University of Perugia (Italy). “The prejudice and misinformation regarding possible side effects of statins among patients and also some physicians unfortunately remains very strong today,” he said in an interview. “My impression is that PCSK9 inhibitors are less affected by this negative bias and are seen as a safer alternative to statins.” Concerns about PCSK9 inhibitors have especially focused on “the possible risks from very low cholesterol levels on the brain.” The evidence from both studies and clinical experience “allows for a very positive opinion about the efficacy and safety of PCSK9 inhibitors, although the long-term effects still require a few more years of observation,” said Dr. Mannarino, who led a review of the evidence that clears this class from links to neurocognitive loss (J Clin Lipid. 2018 Sep 1;12[5]:1123-32).

FOURIER (Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk) randomized 27,564 patients with atherosclerotic cardiovascular disease and elevated LDL cholesterol despite maximally tolerated standard treatment. Treatment with evolocumab for a median of 2.2 years resulted in a statistically significant 15% reduction in the study’s primary efficacy endpoint, compared with placebo (N Engl J Med. 2017 May 4;376[18]:1713-22), and led to the drug receiving an indication for lowering rates of MI, stroke, and symptom-driven coronary revascularization.

The prespecified substudy reported by Dr. Giugliano and his associates focused on a 23-question, validated, self-assessment survey of cognitive function completed by 22,655 of the FOURIER patients (82%). The more than 4,900 other patients in the study who did not complete the survey had modestly higher prevalence rates of various comorbidities at baseline, and also higher rates of adverse outcomes during follow-up, and in many cases these adverse outcome may have contributed to these patients not being able to complete their end-of-study cognitive assessment. For example, almost a quarter of the patients who did not complete their end-of-study cognitive assessment failed to do so because they had already died.

Overall, the prevalence of patients indicating a cognitive decline was virtually identical among 11,363 patients who had been maintained on evolocumab, with a 3.7% rate, and the 11,292 patients in the placebo group, with a 3.6% rate. When analyzed by achieved level of LDL-C after 4 weeks on treatment, the 2,338 patients with a level below 20 mg/dL had a 3.8% rate of self-reported cognitive loss, compared with a 4.5% rate among 3,613 patients who had an LDL-C level of at least 100 mg/dL when measured 4 weeks into the study.

One of the strengths of the new cognitive analysis is that, although it did not use the more sophisticated assessment tests employed on fewer patients in the EBBINGHAUS substudy, it used the Everyday Cognition scale (Neuropsychiatry. 2008 Jul;22[4]: 531-44). “We asked patients what they have experienced, and in the end that is what’s important, so this adds to the neurocognitive testing,” run in EBBINGHAUS, Dr. Giugliano said in an interview.

“The neurocognitive results in the present study were self-reported, and that might be a limitation, as it is less specific and objective, but it is also a strength, as it could be more sensitive” especially for a “nocebo effect common to all lipid-lowering drugs linked to the bad reputation historically attributed to statins,” Dr. Mannarino said.

Should the new FOURIER data “be interpreted as definitive evidence that intensive LDL-C lowering with PCSK9 monoclonal antibodies has no major harmful cognitive effects, at least over a period of 3 years? The answer appears to be a qualified yes, but with three important caveats,” Jennifer G. Robinson, MD, a professor of epidemiology at the University of Iowa College of Public Health in Iowa City, said in an editorial that accompanied the new report (J Am Coll Cardiol. 2020 May 12;75[18]:2294-6). Her three caveats are the missing 18% of patients who never took the end-of-study assessment, the relative paucity of patients at very advanced age in FOURIER, in which patients averaged 62.5 years old, and the exclusion from FOURIER of patients with a history of hemorrhagic stroke. Dr. Robinson also cited the 2.2 year median follow-up as leaving unsettled the potential cognitive impact of longer treatment.

In response, Dr. Giugliano noted that the very large size of FOURIER and the 22,655 patients who completed their survey provided substantial numbers of patients to address some of these concerns in robust subgroup analyses. For example, the new report showed no signal of excess cognitive complaints with evolocumab treatment among 1,999 patients who were at least 75 years old when entering the study, or in more than 5,000 patients with a history of cerebrovascular disease at baseline, or in 1,990 patients with a history of a nonstroke neurologic disease. In addition, while he conceded that the 18% of patients not accounted for in the new study placed some limits on generalizability of the findings, he also maintained that this unavoidable failure to collect data from a modest percentage of patients doesn’t scuttle the overarching signal of cognitive safety for most patients. And regarding the duration of treatment monitored, he noted that 5-year follow-up cognitive assessments are planned.

FOURIER was sponsored by Amgen, the company that markets evolocumab (Repatha). Dr. Giugliano has received personal fees and research support from Amgen and from several other companies. Dr. Mannarino had no disclosures. Dr. Robinson has been a consultant to The Medicines Company, Novartis, and Pfizer, and she has received research funding to her institution from Amgen and several other companies.

mzoler@mdedge.com

SOURCE: Gencer B et al. J Am Coll Cardiol. 2020 May 12;75[18]:2283-93.

Correction: Dr. Giugliano's name was misspelled in an earlier version of this article.

Treatment with a PCSK9 inhibitor, as well as achieving dramatically lowered cholesterol levels, did not mess with patients’ minds. Results from a cognition self-assessment completed by more than 22,000 patients when they finished participation in the FOURIER pivotal outcomes trial for evolocumab showed no signal of mental harm from either treatment with this PCSK9 inhibitor or from reaching a serum level of low-density lipoprotein cholesterol (LDL-C) of less than 20 mg/dL.

“We observed that patients treated with evolocumab, as well as those who achieved progressively very low LDL-C at 4 weeks in the FOURIER trial, had similar self-reported cognition in comparison with those receiving placebo and those with higher achieved LDL-C levels,” wrote a team of researchers from the trial in an article published online on May 4 (J Am Coll Cardiol. 2020 May 12;75[18]: 2283-93). “These data confirm the neurocognitive safety of intensive LDL-C reduction with evolocumab while reducing recurrent CV [cardiovascular] events in high-risk patients, and suggest that very low achieved LDL-C levels may be safely targeted for high-risk patients.”

The findings added to prior results documenting the cognitive safety of evolocumab (Repatha) from a much smaller FOURIER substudy that involved more intensive testing, the EBBINGHAUS (Evaluating PCSK9 Binding Antibody Influence on Cognitive Health in High Cardiovascular Risk Subjects) study with 1,204 patients drawn from the broader study and tested after a median 19 months on treatment (N Engl J Med. 2017 Aug 17;377[17]: 633-43), as well as reports of neurocognitive safety for the other U.S. approved PCSK9 (proprotein convertase subtilisin kexin 9) inhibitor, alirocumab (Praluent) (N Engl J Med. 2015 Apr 16;372[16]:1489-99), various statins (J Gen Intern Med. 2015 Mar;30[3]: 348-58), and a third type of LDL-C–lowering agent, ezetimibe (JAMA Cardiol. 2017 May;2[5]:547-55).

Despite this evidence from across several drug classes that all cut LDL-C a long-standing but unsubstantiated belief persists among some that lipid lowering, especially by statins, blunts mental function, misinformation that’s easy to find on the Internet. “I estimate that about 20% of patients prescribed a statin won’t take it because of something they’ve heard” including that statins make you stupid. “It’s hard to undo that,” said Robert P. Giugliano, MD, a cardiologist at Brigham and Women’s Hospital in Boston and senior author for the new FOURIER study as well as for EBBINGHAUS. The same stigma has not gained nearly as much traction for PCSK9 inhibitors, however, and Dr. Giugliano said he has also recently sensed what may be a downtrend in statin apprehension.

“The information added by this study is very important,” commented Massimo R. Mannarino, MD, an atherosclerotic disease researcher at the University of Perugia (Italy). “The prejudice and misinformation regarding possible side effects of statins among patients and also some physicians unfortunately remains very strong today,” he said in an interview. “My impression is that PCSK9 inhibitors are less affected by this negative bias and are seen as a safer alternative to statins.” Concerns about PCSK9 inhibitors have especially focused on “the possible risks from very low cholesterol levels on the brain.” The evidence from both studies and clinical experience “allows for a very positive opinion about the efficacy and safety of PCSK9 inhibitors, although the long-term effects still require a few more years of observation,” said Dr. Mannarino, who led a review of the evidence that clears this class from links to neurocognitive loss (J Clin Lipid. 2018 Sep 1;12[5]:1123-32).

FOURIER (Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk) randomized 27,564 patients with atherosclerotic cardiovascular disease and elevated LDL cholesterol despite maximally tolerated standard treatment. Treatment with evolocumab for a median of 2.2 years resulted in a statistically significant 15% reduction in the study’s primary efficacy endpoint, compared with placebo (N Engl J Med. 2017 May 4;376[18]:1713-22), and led to the drug receiving an indication for lowering rates of MI, stroke, and symptom-driven coronary revascularization.

The prespecified substudy reported by Dr. Giugliano and his associates focused on a 23-question, validated, self-assessment survey of cognitive function completed by 22,655 of the FOURIER patients (82%). The more than 4,900 other patients in the study who did not complete the survey had modestly higher prevalence rates of various comorbidities at baseline, and also higher rates of adverse outcomes during follow-up, and in many cases these adverse outcome may have contributed to these patients not being able to complete their end-of-study cognitive assessment. For example, almost a quarter of the patients who did not complete their end-of-study cognitive assessment failed to do so because they had already died.

Overall, the prevalence of patients indicating a cognitive decline was virtually identical among 11,363 patients who had been maintained on evolocumab, with a 3.7% rate, and the 11,292 patients in the placebo group, with a 3.6% rate. When analyzed by achieved level of LDL-C after 4 weeks on treatment, the 2,338 patients with a level below 20 mg/dL had a 3.8% rate of self-reported cognitive loss, compared with a 4.5% rate among 3,613 patients who had an LDL-C level of at least 100 mg/dL when measured 4 weeks into the study.

One of the strengths of the new cognitive analysis is that, although it did not use the more sophisticated assessment tests employed on fewer patients in the EBBINGHAUS substudy, it used the Everyday Cognition scale (Neuropsychiatry. 2008 Jul;22[4]: 531-44). “We asked patients what they have experienced, and in the end that is what’s important, so this adds to the neurocognitive testing,” run in EBBINGHAUS, Dr. Giugliano said in an interview.

“The neurocognitive results in the present study were self-reported, and that might be a limitation, as it is less specific and objective, but it is also a strength, as it could be more sensitive” especially for a “nocebo effect common to all lipid-lowering drugs linked to the bad reputation historically attributed to statins,” Dr. Mannarino said.

Should the new FOURIER data “be interpreted as definitive evidence that intensive LDL-C lowering with PCSK9 monoclonal antibodies has no major harmful cognitive effects, at least over a period of 3 years? The answer appears to be a qualified yes, but with three important caveats,” Jennifer G. Robinson, MD, a professor of epidemiology at the University of Iowa College of Public Health in Iowa City, said in an editorial that accompanied the new report (J Am Coll Cardiol. 2020 May 12;75[18]:2294-6). Her three caveats are the missing 18% of patients who never took the end-of-study assessment, the relative paucity of patients at very advanced age in FOURIER, in which patients averaged 62.5 years old, and the exclusion from FOURIER of patients with a history of hemorrhagic stroke. Dr. Robinson also cited the 2.2 year median follow-up as leaving unsettled the potential cognitive impact of longer treatment.

In response, Dr. Giugliano noted that the very large size of FOURIER and the 22,655 patients who completed their survey provided substantial numbers of patients to address some of these concerns in robust subgroup analyses. For example, the new report showed no signal of excess cognitive complaints with evolocumab treatment among 1,999 patients who were at least 75 years old when entering the study, or in more than 5,000 patients with a history of cerebrovascular disease at baseline, or in 1,990 patients with a history of a nonstroke neurologic disease. In addition, while he conceded that the 18% of patients not accounted for in the new study placed some limits on generalizability of the findings, he also maintained that this unavoidable failure to collect data from a modest percentage of patients doesn’t scuttle the overarching signal of cognitive safety for most patients. And regarding the duration of treatment monitored, he noted that 5-year follow-up cognitive assessments are planned.

FOURIER was sponsored by Amgen, the company that markets evolocumab (Repatha). Dr. Giugliano has received personal fees and research support from Amgen and from several other companies. Dr. Mannarino had no disclosures. Dr. Robinson has been a consultant to The Medicines Company, Novartis, and Pfizer, and she has received research funding to her institution from Amgen and several other companies.

mzoler@mdedge.com

SOURCE: Gencer B et al. J Am Coll Cardiol. 2020 May 12;75[18]:2283-93.

Correction: Dr. Giugliano's name was misspelled in an earlier version of this article.

The potential for serious arrhythmias from hydroxychloroquine treatment of COVID-19 patients received further documentation from a pair of studies released on May 1, casting further doubt on whether the uncertain benefit from this or related drugs to infected patients is worth the clear risks the agents pose.

A report from 90 confirmed COVID-19 patients treated with hydroxychloroquine at one Boston hospital during March-April 2020 identified a significantly prolonged, corrected QT (QTc) interval of at least 500 msec in 18 patients (20%), which included 10 patients whose QTc rose by at least 60 msec above baseline, and a total of 21 patients (23%) having a notable prolongation (JAMA Cardiol. 2020 May 4. doi: 10.1001/jamacardio.2020.1834). This series included one patient who developed torsades de pointes following treatment with hydroxychloroquine and azithromycin, “which to our knowledge has yet to be reported elsewhere in the literature,” the report said.

The second report, from a single center in Lyon, France, included 40 confirmed COVID-19 patients treated with hydroxychloroquine during 2 weeks in late March, and found that 37 (93%) had some increase in the QTc interval, including 14 patients (36%) with an increase of at least 60 msec, and 7 patients (18%) whose QTc rose to at least 500 msec (JAMA Cardiol. 2020 May. doi: 10.1001/jamacardio.2020.1787). However, none of the 40 patients in this series developed an identified ventricular arrhythmia. All patients in both studies received hydroxychloroquine for at least 1 day, and roughly half the patients in each series also received concurrent azithromycin, another drug that can prolong the QTc interval and that has been frequently used in combination with hydroxychloroquine as an unproven COVID-19 treatment cocktail.

These two reports, as well as prior report from Brazil on COVID-19 patients treated with chloroquine diphosphate (JAMA Netw Open. 2020;3[4]:e208857), “underscore the potential risk associated with widespread use of hydroxychloroquine and the combination of hydroxychloroquine and azithromycin in ambulatory patients with known or suspected COVID-19. Understanding whether this risk is worth taking in the absence of evidence of therapeutic efficacy creates a knowledge gap that needs to be addressed,” wrote Robert O. Bonow, MD, a professor of medicine at Northwestern University in Chicago, and coauthors in an editorial that accompanied the two reports (JAMA Cardiol. 2020 May 4;doi: 10.1001/jamacardio.2020.1782). The editorial cited two recently-begun prospective trials, ORCHID and RECOVERY, that are more systematically assessing the safety and efficacy of hydroxychloroquine treatment in COVID-19 patients.

The findings lend further support to a Safety Communication from the U.S. Food and Drug Administration on April 24 that reminded clinicians that the Emergency Use Authorization for hydroxychloroquine and chloroquine in COVID-19 patients that the FDA issued on March 28 applied to only certain hospitalized patients or those enrolled in clinical trials. The Safety Communication also said that agency was aware of reports of adverse arrhythmia events when COVID-19 patients received these drugs outside a hospital setting as well as uninfected people who had received one of these drugs for preventing infection.

In addition, leaders of the American College of Cardiology, the American Heart Association, and the Heart Rhythm Society on April 10 issued a summary of considerations when using hydroxychloroquine and azithromycin to treat COVID-19 patients, and noted that a way to minimized the risk from these drugs is to withhold them from patients with a QTc interval of 500 msec or greater at baseline (J Am Coll Cardiol. 2020 Apr 10. doi: 10.1016/j.jacc.2020.04.016). The summary also highlighted the need for regular ECG monitoring of COVID-19 patients who receive drugs that can prolong the QTc interval, and recommended withdrawing treatment from patients when their QTc exceeds the 500 msec threshold.

None of the authors of the two reports and editorial had relevant commercial disclosures.

mzoler@mdedge.com

The potential for serious arrhythmias from hydroxychloroquine treatment of COVID-19 patients received further documentation from a pair of studies released on May 1, casting further doubt on whether the uncertain benefit from this or related drugs to infected patients is worth the clear risks the agents pose.

A report from 90 confirmed COVID-19 patients treated with hydroxychloroquine at one Boston hospital during March-April 2020 identified a significantly prolonged, corrected QT (QTc) interval of at least 500 msec in 18 patients (20%), which included 10 patients whose QTc rose by at least 60 msec above baseline, and a total of 21 patients (23%) having a notable prolongation (JAMA Cardiol. 2020 May 4. doi: 10.1001/jamacardio.2020.1834). This series included one patient who developed torsades de pointes following treatment with hydroxychloroquine and azithromycin, “which to our knowledge has yet to be reported elsewhere in the literature,” the report said.

The second report, from a single center in Lyon, France, included 40 confirmed COVID-19 patients treated with hydroxychloroquine during 2 weeks in late March, and found that 37 (93%) had some increase in the QTc interval, including 14 patients (36%) with an increase of at least 60 msec, and 7 patients (18%) whose QTc rose to at least 500 msec (JAMA Cardiol. 2020 May. doi: 10.1001/jamacardio.2020.1787). However, none of the 40 patients in this series developed an identified ventricular arrhythmia. All patients in both studies received hydroxychloroquine for at least 1 day, and roughly half the patients in each series also received concurrent azithromycin, another drug that can prolong the QTc interval and that has been frequently used in combination with hydroxychloroquine as an unproven COVID-19 treatment cocktail.

These two reports, as well as prior report from Brazil on COVID-19 patients treated with chloroquine diphosphate (JAMA Netw Open. 2020;3[4]:e208857), “underscore the potential risk associated with widespread use of hydroxychloroquine and the combination of hydroxychloroquine and azithromycin in ambulatory patients with known or suspected COVID-19. Understanding whether this risk is worth taking in the absence of evidence of therapeutic efficacy creates a knowledge gap that needs to be addressed,” wrote Robert O. Bonow, MD, a professor of medicine at Northwestern University in Chicago, and coauthors in an editorial that accompanied the two reports (JAMA Cardiol. 2020 May 4;doi: 10.1001/jamacardio.2020.1782). The editorial cited two recently-begun prospective trials, ORCHID and RECOVERY, that are more systematically assessing the safety and efficacy of hydroxychloroquine treatment in COVID-19 patients.

The findings lend further support to a Safety Communication from the U.S. Food and Drug Administration on April 24 that reminded clinicians that the Emergency Use Authorization for hydroxychloroquine and chloroquine in COVID-19 patients that the FDA issued on March 28 applied to only certain hospitalized patients or those enrolled in clinical trials. The Safety Communication also said that agency was aware of reports of adverse arrhythmia events when COVID-19 patients received these drugs outside a hospital setting as well as uninfected people who had received one of these drugs for preventing infection.

In addition, leaders of the American College of Cardiology, the American Heart Association, and the Heart Rhythm Society on April 10 issued a summary of considerations when using hydroxychloroquine and azithromycin to treat COVID-19 patients, and noted that a way to minimized the risk from these drugs is to withhold them from patients with a QTc interval of 500 msec or greater at baseline (J Am Coll Cardiol. 2020 Apr 10. doi: 10.1016/j.jacc.2020.04.016). The summary also highlighted the need for regular ECG monitoring of COVID-19 patients who receive drugs that can prolong the QTc interval, and recommended withdrawing treatment from patients when their QTc exceeds the 500 msec threshold.

None of the authors of the two reports and editorial had relevant commercial disclosures.

mzoler@mdedge.com

The potential for serious arrhythmias from hydroxychloroquine treatment of COVID-19 patients received further documentation from a pair of studies released on May 1, casting further doubt on whether the uncertain benefit from this or related drugs to infected patients is worth the clear risks the agents pose.

A report from 90 confirmed COVID-19 patients treated with hydroxychloroquine at one Boston hospital during March-April 2020 identified a significantly prolonged, corrected QT (QTc) interval of at least 500 msec in 18 patients (20%), which included 10 patients whose QTc rose by at least 60 msec above baseline, and a total of 21 patients (23%) having a notable prolongation (JAMA Cardiol. 2020 May 4. doi: 10.1001/jamacardio.2020.1834). This series included one patient who developed torsades de pointes following treatment with hydroxychloroquine and azithromycin, “which to our knowledge has yet to be reported elsewhere in the literature,” the report said.

The second report, from a single center in Lyon, France, included 40 confirmed COVID-19 patients treated with hydroxychloroquine during 2 weeks in late March, and found that 37 (93%) had some increase in the QTc interval, including 14 patients (36%) with an increase of at least 60 msec, and 7 patients (18%) whose QTc rose to at least 500 msec (JAMA Cardiol. 2020 May. doi: 10.1001/jamacardio.2020.1787). However, none of the 40 patients in this series developed an identified ventricular arrhythmia. All patients in both studies received hydroxychloroquine for at least 1 day, and roughly half the patients in each series also received concurrent azithromycin, another drug that can prolong the QTc interval and that has been frequently used in combination with hydroxychloroquine as an unproven COVID-19 treatment cocktail.

These two reports, as well as prior report from Brazil on COVID-19 patients treated with chloroquine diphosphate (JAMA Netw Open. 2020;3[4]:e208857), “underscore the potential risk associated with widespread use of hydroxychloroquine and the combination of hydroxychloroquine and azithromycin in ambulatory patients with known or suspected COVID-19. Understanding whether this risk is worth taking in the absence of evidence of therapeutic efficacy creates a knowledge gap that needs to be addressed,” wrote Robert O. Bonow, MD, a professor of medicine at Northwestern University in Chicago, and coauthors in an editorial that accompanied the two reports (JAMA Cardiol. 2020 May 4;doi: 10.1001/jamacardio.2020.1782). The editorial cited two recently-begun prospective trials, ORCHID and RECOVERY, that are more systematically assessing the safety and efficacy of hydroxychloroquine treatment in COVID-19 patients.

The findings lend further support to a Safety Communication from the U.S. Food and Drug Administration on April 24 that reminded clinicians that the Emergency Use Authorization for hydroxychloroquine and chloroquine in COVID-19 patients that the FDA issued on March 28 applied to only certain hospitalized patients or those enrolled in clinical trials. The Safety Communication also said that agency was aware of reports of adverse arrhythmia events when COVID-19 patients received these drugs outside a hospital setting as well as uninfected people who had received one of these drugs for preventing infection.

In addition, leaders of the American College of Cardiology, the American Heart Association, and the Heart Rhythm Society on April 10 issued a summary of considerations when using hydroxychloroquine and azithromycin to treat COVID-19 patients, and noted that a way to minimized the risk from these drugs is to withhold them from patients with a QTc interval of 500 msec or greater at baseline (J Am Coll Cardiol. 2020 Apr 10. doi: 10.1016/j.jacc.2020.04.016). The summary also highlighted the need for regular ECG monitoring of COVID-19 patients who receive drugs that can prolong the QTc interval, and recommended withdrawing treatment from patients when their QTc exceeds the 500 msec threshold.

None of the authors of the two reports and editorial had relevant commercial disclosures.

mzoler@mdedge.com

Targeted therapies have transformed the treatment of many malignant diseases by inhibiting molecular pathways involved in tumor growth and oncogenesis. Although these therapies can prevent disease progression, toxicities often result. Renal cell carcinoma (RCC) is one of many cancers that responds well to these therapies.

RCC accounts for 2% to 3% of all malignancies in adults worldwide. About 30% of patients with RCC present with metastatic or advanced disease.¹ Cytokine therapy was the standard of care until multitargeted tyrosine kinase inhibitors (TKIs) were developed. Over the past 12 years, the US Food and Drug Administration (FDA) has approved 6 TKIs for the treatment of RCC: axitinib, cabozantinib, lenvatinib, pazopanib, sorafenib, and sunitinib. Vascular endothelial growth factor receptor (VEGFR) is one of many tyrosine kinase receptors targeted by these medications. This mechanism prevents angiogenesis and consequently increases the risk for hypertension, bleeding, and clot formation.

Given these risks, many patients were excluded from the initial clinical trials of these medications if they had a history of uncontrolled hypertension, advanced heart failure (HF), or a significant cardiovascular (CV) event within 6 months prior to study enrollment. Many of these studies did not report the incidence of CV events (other than hypertension) that occurred during the early trials.² The recommended monitoring for TKI therapies is focused mainly on blood pressure. For patients on pazopanib and sunitinib therapy, baseline and periodic electrocardiograms (ECGs) are recommended; echocardiograms are recommended only for patients with a history of cardiac disease.^3,4 In patients on sorafenib therapy, ECG is recommended for those at risk for corrected QT (QTc) intervalprolongation.⁵

According to a meta-analysis of the literature published between 1966 and 2013,many studies reported a CV toxicity risk associated with the TKIs used in RCC treatment.⁶ However, some studies have found modest, not clinically significant changes in cardiac function in patients with advanced disease. In 2013, Hall and colleagues found 73% of patients they studied experienced some type of CV toxicity, whereas only 33% of patients had CV toxicity when hypertension was excluded.⁷ Interestingly, Rini and colleagues found that RCC patients receiving sunitinib had better response rates and progression-free survival when they developed hypertension compared with those who did not develop hypertension.⁸

A review of several studies revealed similar numbers in patients on TKI therapy presenting with symptomatic HF, but Hall and colleagues found that 27% of patients developed asymptomatic left ventricular dysfunction.^7,9,10 These results suggest routine monitoring may allow for appropriate preventive interventions. In patients receiving TKI therapy, CV events, including QTc prolongation, left ventricular HF, myocardial infarction (MI), hypertension, pulmonary hypertension, and stroke, were commonly reported by investigators.^7,9,10 Currently, there are no studies of the incidence of CV events for the 5 TKIs (axitinib, cabozantinib, pazopanib, sorafenib, sunitinib) in this patient population.

TKI therapy may require cardiac monitoring of all patients, as studies have associated TKIs with CV toxicity in varying degrees. Therefore, the authors set out to determine the incidence of CV events as well as time to first CV event in patients with and without a history of CV disease (CVD) who received a TKI for advanced RCC. More frequent monitoring for CV toxicity may present opportunities for clinical interventions for all patients on TKI therapy—especially for those with HF or other diseases in which the goal of therapy is to prevent disease progression. As TKIs have emerged as the standard treatment option for advanced RCC, many patients will continue therapy until disease progression or intolerable toxicity. Identifying and using appropriate monitoring parameters can lead to preventive interventions that allow patients to benefit from TKI therapy longer. At the US Department of Veterans Affairs (VA) San Diego Healthcare System (VASDHS), patients undergo routine cardiac monitoring at the discretion of the provider.

In this retrospective study, the authors wanted to determine the incidence of CV events in patients with and without a history of CVD who were receiving TKIs for advanced RCC. The authors also wanted to evaluate time to CV event from start of therapy in order to determine how often monitoring may be needed. The outcomes of this study may lead to a change in practice and development of monitoring parameters to ensure appropriate and adequate management of TKI therapy in RCC.

Methods

Each year, the VASDHS oncology team diagnose 5 to 10 patients with RCC who begin TKI therapy. When sorafenib was approved by the FDA in 2005, VASDHS estimated that about 100 of its patients had an RCC diagnosis and would be treated with a TKI between December 2005 and July 2017.

The authors identified VASDHS patients with a diagnosis of advanced RCC who received axitinib, cabozantinib, pazopanib, sorafenib, or sunitinib between December 1, 2005 and July 31, 2017. Patients were included if they had been on therapy for at least 30 days. The VASDHS pharmacy informatics team assisted in extracting a list of patients with an ICD-9 or ICD-10 diagnosis of RCC and using prescription fills for any of the 5 TKIs previously noted. Medical records were reviewed for frequency of prescription fills, age, sex, Eastern Cooperative Oncology Group (ECOG) performance status, TKI treatment duration, previous history of CVD, ethnicity, and smoking status. If documented, the incidence of CV events was reviewed for each patient at 0, 1, 3, 6, and 12 months. Patients who received medications (Appendix) for their CVD were assessed for adherence based on history of prescription refills from their medical records. Adherence was evaluated for the duration that patients were concurrently taking an oral TKI. The institutional review board at VASDHS approved the study design.

All patients included in this study started TKI therapy since the December 2005 FDA approval of sorafenib, the first oral TKI for treatment of RCC. Each new start was recorded as a separate event, regardless of previous oral TKI therapy. Albiges and colleagues found that the approximate median time from starting TKI therapy to complete response was 12.6 months, and the median duration of TKI therapy after complete response was 10.3 months.¹¹ Based on these results, the follow-up period for patients in this study was 2 years after the start of each TKI therapy. For data analysis, patients were stratified by CVD history (yes or no). In addition, composite outcomes were evaluated to identify a potential cumulative increased risk for CV events for patients who had been on multiple TKI therapies.

For this study, CV toxicities were characterized using Common Terminology Criteria for Adverse Events (CTCAE) version 4.03; severity of adverse events (AEs) was graded 1 to 5. CTCAE commonly has been used to assess AEs in oncology clinical trials. The CV AEs selected for this study included QTc prolongation, hypertension, left ventricular dysfunction, stroke, myocardial infarction (MI), and pulmonary arterial hypertension. CTCAE was not used to assess left ventricular dysfunction, as the rating is based on symptomology. Instead, worsening left ventricular ejection fraction (LVEF) was based on comparisons of ECG results at baseline with results at 1, 3, 6, and 12 months. A normal ECG result was defined as no structural change in the left ventricle, or LVEF ≥ 55%, and an abnormal result was defined as structural changes in the left ventricle, or LVEF < 55%. Given updates in blood pressure (BP) guidelines and uncertainty regarding the clinical utility of prehypertension, grade 1 hypertension was excluded as an AE.

Primary outcomes included incidence of CV events and time to first CV event after initiation of TKI therapy. Secondary outcomes included changes in ECG or echocardiogram results at 0, 1, 3, 6, and 12 months. Secondary outcomes at scheduled time points were not readily available for every patient, but any available time points were gathered to aid in identifying an optimal period for cardiac monitoring. In addition, patients with a history of CVD were evaluated for adherence to common first-line therapies for each disease.

A Fischer exact test was used to compare the incidence of CV events in patients with and without a history of CVD (significance level, α = 0.05). A subgroup analysis was used to compare the incidence of CV events in patients who experienced a CV event (significance level, α = 0.05). A Kaplan-Meier survival curve was used to determine time to first CV event. A log-rank test with significance level set at α = 0.05 also was used.

Results

An initial database search identified 134 patients who received TKI therapy at VASDHS between December 1, 2005 and July 31, 2017. According to retrospective chart review, 54 patients met the inclusion criteria for the study (Table 1).

Patients without a history of CVD (17%) did not experience any CV events while on TKI therapy. Of the patients with a history of CVD, 9 (20%) experienced ≥ 1 CV event. Fifty-five percent of the events experienced were hypertension. One patient experienced QTc prolongation, and 2 patients experienced MI. As already noted, each new start of TKI was recorded as a separate event, regardless of previous TKI therapy. Among patients with a history of CVD, 2 experienced 2 CV events. Overall, 11 CV events occurred among patients who received ≥ 1 TKI, corresponding to an overall incidence of 24% (Table 2). 

Of the 13 patients who were exposed to ≥ 2 TKI therapies, 2 experienced a CV event. Both patients were started on sunitinib and were switched to sorafenib. One of these used sunitinib for 7 months, experienced a partial response and was switched to sorafenib (with a 3-month break between therapies). The second patient was on sunitinib for 24 months, with multiple doses held because of low blood counts and diarrhea. While on sunitinib, this patient experienced a HF exacerbation, determined to be caused by the underlying disease. This event occurred 17 months after sunitinib was started, and therapy was continued for another 7 months. The patient was switched to sorafenib because of poor tolerability and disease progression. While on sorafenib, this patient experienced grade 1 QTc prolongation.

Discussion

Of the available oral TKI therapies for RCC, sunitinib and sorafenib have the most data associated with nonhypertensive CV toxicity.^2,7-10,12 Instudies, the percentage of patients who experienced CV toxicity while on sunitinib or sorafenib has ranged widely, from 2.7% to 33.8%; the variance may be attributable to differences in how institutions report CV toxicities.^7-9

According to the prescribing information for TKIs, hypertension is frequently reported as an AE for all 5 TKIs, and BP monitoring is recommended.^3,4 However, the development of hypertension with these TKIs has been associated with response to therapy.⁷ With pazopanib, sorafenib, and sunitinib, there is a higher incidence of other AEs: edema, HF, MI, and QTc prolongation. Baseline ECG is recommended for all patients started on pazopanib and sunitinib and for patients with a history of CVD who are started on sorafenib. An ECG is recommended for patients with a history of CVD who are started on pazopanib and sunitinib.

Even with the medication prescribing information recommendations, it is unclear how frequently patients should be monitored. At VASDHS, CV monitoring for any patient started on a TKI remains at the discretion of the oncologist. There are concerns that ordering cardiac monitoring tests, which might be unnecessary, will change or guide therapy. In this study, data evaluation revealed 1 patient who experienced a CV event had a CVD history that was not documented in the patient’s medical history. It is important that providers obtain a detailed clinical assessment of patients CV history during each visit to determine whether CV monitoring should be considered. Patients also may benefit from additional counseling to emphasize the importance of adherence to CV medication therapy to reduce the incidence of these events.

Data from this study indicate that routine CV monitoring should be considered in patients with CVD, in keeping with current medication prescribing information recommendations. Of the patients who had a CV event, 54% experienced hypertension, 18% MI, and 28% stroke, QTc prolongation, or congestive HF. 

Limitations

This retrospective study had several limitations. Many patients did not have a baseline cardiac monitoring test or any monitoring during therapy. Often, a cardiac test was performed only when the patient was symptomatic or experiencing a CV event. In addition, because of intolerance or nonadherence to therapy, many patients discontinued treatment early, before completing 30 days. That axitinib and cabozantinib are newer therapies and not first-line at VASDHS during the data collection period accounts for the small number of patients on these therapies. Therapy was shorter for patients started on pazopanib, axitinib, and cabozantinib than it was for patients on sunitinib and sorafenib. Duration of therapy may affect treatment-related events, but the majority of patients in this study experienced an event within 4 months of therapy. About half of the patients who experienced an event were nonadherent to their CV medication regimen. Another potential limitation is that this study was conducted at VASDHS, where most patients are male (RCC incidence is 2:1 male:female).

Conclusion

In this study, CV events occurred in 24% of patients with a history of CVD; 11% of these events were nonhypertensive. Baseline cardiac monitoring was not performed for most patients started on TKI therapy, but tests were performed once patients became symptomatic. The study results suggest that high-risk patients should undergo routine cardiac monitoring during the first 4 months of TKI therapy, in keeping with medication package insert monitoring recommendations. Cardiac monitoring of high-risk patients will allow for earlier identification of cardiac decline and offer opportunities for interventions, such as pharmacist-driven protocols to start CV medications. Implementation of this study’s recommendations should be evaluated to determine whether outcomes improve with routine cardiac monitoring in these high-risk patients.

Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.

Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, FrontlineMedical Communications Inc., the US Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects— before administering pharmacologic therapy to patients.

Targeted therapies have transformed the treatment of many malignant diseases by inhibiting molecular pathways involved in tumor growth and oncogenesis. Although these therapies can prevent disease progression, toxicities often result. Renal cell carcinoma (RCC) is one of many cancers that responds well to these therapies.

RCC accounts for 2% to 3% of all malignancies in adults worldwide. About 30% of patients with RCC present with metastatic or advanced disease.¹ Cytokine therapy was the standard of care until multitargeted tyrosine kinase inhibitors (TKIs) were developed. Over the past 12 years, the US Food and Drug Administration (FDA) has approved 6 TKIs for the treatment of RCC: axitinib, cabozantinib, lenvatinib, pazopanib, sorafenib, and sunitinib. Vascular endothelial growth factor receptor (VEGFR) is one of many tyrosine kinase receptors targeted by these medications. This mechanism prevents angiogenesis and consequently increases the risk for hypertension, bleeding, and clot formation.

Given these risks, many patients were excluded from the initial clinical trials of these medications if they had a history of uncontrolled hypertension, advanced heart failure (HF), or a significant cardiovascular (CV) event within 6 months prior to study enrollment. Many of these studies did not report the incidence of CV events (other than hypertension) that occurred during the early trials.² The recommended monitoring for TKI therapies is focused mainly on blood pressure. For patients on pazopanib and sunitinib therapy, baseline and periodic electrocardiograms (ECGs) are recommended; echocardiograms are recommended only for patients with a history of cardiac disease.^3,4 In patients on sorafenib therapy, ECG is recommended for those at risk for corrected QT (QTc) intervalprolongation.⁵

According to a meta-analysis of the literature published between 1966 and 2013,many studies reported a CV toxicity risk associated with the TKIs used in RCC treatment.⁶ However, some studies have found modest, not clinically significant changes in cardiac function in patients with advanced disease. In 2013, Hall and colleagues found 73% of patients they studied experienced some type of CV toxicity, whereas only 33% of patients had CV toxicity when hypertension was excluded.⁷ Interestingly, Rini and colleagues found that RCC patients receiving sunitinib had better response rates and progression-free survival when they developed hypertension compared with those who did not develop hypertension.⁸

A review of several studies revealed similar numbers in patients on TKI therapy presenting with symptomatic HF, but Hall and colleagues found that 27% of patients developed asymptomatic left ventricular dysfunction.^7,9,10 These results suggest routine monitoring may allow for appropriate preventive interventions. In patients receiving TKI therapy, CV events, including QTc prolongation, left ventricular HF, myocardial infarction (MI), hypertension, pulmonary hypertension, and stroke, were commonly reported by investigators.^7,9,10 Currently, there are no studies of the incidence of CV events for the 5 TKIs (axitinib, cabozantinib, pazopanib, sorafenib, sunitinib) in this patient population.

TKI therapy may require cardiac monitoring of all patients, as studies have associated TKIs with CV toxicity in varying degrees. Therefore, the authors set out to determine the incidence of CV events as well as time to first CV event in patients with and without a history of CV disease (CVD) who received a TKI for advanced RCC. More frequent monitoring for CV toxicity may present opportunities for clinical interventions for all patients on TKI therapy—especially for those with HF or other diseases in which the goal of therapy is to prevent disease progression. As TKIs have emerged as the standard treatment option for advanced RCC, many patients will continue therapy until disease progression or intolerable toxicity. Identifying and using appropriate monitoring parameters can lead to preventive interventions that allow patients to benefit from TKI therapy longer. At the US Department of Veterans Affairs (VA) San Diego Healthcare System (VASDHS), patients undergo routine cardiac monitoring at the discretion of the provider.

In this retrospective study, the authors wanted to determine the incidence of CV events in patients with and without a history of CVD who were receiving TKIs for advanced RCC. The authors also wanted to evaluate time to CV event from start of therapy in order to determine how often monitoring may be needed. The outcomes of this study may lead to a change in practice and development of monitoring parameters to ensure appropriate and adequate management of TKI therapy in RCC.

Methods

Each year, the VASDHS oncology team diagnose 5 to 10 patients with RCC who begin TKI therapy. When sorafenib was approved by the FDA in 2005, VASDHS estimated that about 100 of its patients had an RCC diagnosis and would be treated with a TKI between December 2005 and July 2017.

The authors identified VASDHS patients with a diagnosis of advanced RCC who received axitinib, cabozantinib, pazopanib, sorafenib, or sunitinib between December 1, 2005 and July 31, 2017. Patients were included if they had been on therapy for at least 30 days. The VASDHS pharmacy informatics team assisted in extracting a list of patients with an ICD-9 or ICD-10 diagnosis of RCC and using prescription fills for any of the 5 TKIs previously noted. Medical records were reviewed for frequency of prescription fills, age, sex, Eastern Cooperative Oncology Group (ECOG) performance status, TKI treatment duration, previous history of CVD, ethnicity, and smoking status. If documented, the incidence of CV events was reviewed for each patient at 0, 1, 3, 6, and 12 months. Patients who received medications (Appendix) for their CVD were assessed for adherence based on history of prescription refills from their medical records. Adherence was evaluated for the duration that patients were concurrently taking an oral TKI. The institutional review board at VASDHS approved the study design.

All patients included in this study started TKI therapy since the December 2005 FDA approval of sorafenib, the first oral TKI for treatment of RCC. Each new start was recorded as a separate event, regardless of previous oral TKI therapy. Albiges and colleagues found that the approximate median time from starting TKI therapy to complete response was 12.6 months, and the median duration of TKI therapy after complete response was 10.3 months.¹¹ Based on these results, the follow-up period for patients in this study was 2 years after the start of each TKI therapy. For data analysis, patients were stratified by CVD history (yes or no). In addition, composite outcomes were evaluated to identify a potential cumulative increased risk for CV events for patients who had been on multiple TKI therapies.

For this study, CV toxicities were characterized using Common Terminology Criteria for Adverse Events (CTCAE) version 4.03; severity of adverse events (AEs) was graded 1 to 5. CTCAE commonly has been used to assess AEs in oncology clinical trials. The CV AEs selected for this study included QTc prolongation, hypertension, left ventricular dysfunction, stroke, myocardial infarction (MI), and pulmonary arterial hypertension. CTCAE was not used to assess left ventricular dysfunction, as the rating is based on symptomology. Instead, worsening left ventricular ejection fraction (LVEF) was based on comparisons of ECG results at baseline with results at 1, 3, 6, and 12 months. A normal ECG result was defined as no structural change in the left ventricle, or LVEF ≥ 55%, and an abnormal result was defined as structural changes in the left ventricle, or LVEF < 55%. Given updates in blood pressure (BP) guidelines and uncertainty regarding the clinical utility of prehypertension, grade 1 hypertension was excluded as an AE.

Primary outcomes included incidence of CV events and time to first CV event after initiation of TKI therapy. Secondary outcomes included changes in ECG or echocardiogram results at 0, 1, 3, 6, and 12 months. Secondary outcomes at scheduled time points were not readily available for every patient, but any available time points were gathered to aid in identifying an optimal period for cardiac monitoring. In addition, patients with a history of CVD were evaluated for adherence to common first-line therapies for each disease.

A Fischer exact test was used to compare the incidence of CV events in patients with and without a history of CVD (significance level, α = 0.05). A subgroup analysis was used to compare the incidence of CV events in patients who experienced a CV event (significance level, α = 0.05). A Kaplan-Meier survival curve was used to determine time to first CV event. A log-rank test with significance level set at α = 0.05 also was used.

Results

An initial database search identified 134 patients who received TKI therapy at VASDHS between December 1, 2005 and July 31, 2017. According to retrospective chart review, 54 patients met the inclusion criteria for the study (Table 1).

Patients without a history of CVD (17%) did not experience any CV events while on TKI therapy. Of the patients with a history of CVD, 9 (20%) experienced ≥ 1 CV event. Fifty-five percent of the events experienced were hypertension. One patient experienced QTc prolongation, and 2 patients experienced MI. As already noted, each new start of TKI was recorded as a separate event, regardless of previous TKI therapy. Among patients with a history of CVD, 2 experienced 2 CV events. Overall, 11 CV events occurred among patients who received ≥ 1 TKI, corresponding to an overall incidence of 24% (Table 2). 

Of the 13 patients who were exposed to ≥ 2 TKI therapies, 2 experienced a CV event. Both patients were started on sunitinib and were switched to sorafenib. One of these used sunitinib for 7 months, experienced a partial response and was switched to sorafenib (with a 3-month break between therapies). The second patient was on sunitinib for 24 months, with multiple doses held because of low blood counts and diarrhea. While on sunitinib, this patient experienced a HF exacerbation, determined to be caused by the underlying disease. This event occurred 17 months after sunitinib was started, and therapy was continued for another 7 months. The patient was switched to sorafenib because of poor tolerability and disease progression. While on sorafenib, this patient experienced grade 1 QTc prolongation.

Discussion

Of the available oral TKI therapies for RCC, sunitinib and sorafenib have the most data associated with nonhypertensive CV toxicity.^2,7-10,12 Instudies, the percentage of patients who experienced CV toxicity while on sunitinib or sorafenib has ranged widely, from 2.7% to 33.8%; the variance may be attributable to differences in how institutions report CV toxicities.^7-9

According to the prescribing information for TKIs, hypertension is frequently reported as an AE for all 5 TKIs, and BP monitoring is recommended.^3,4 However, the development of hypertension with these TKIs has been associated with response to therapy.⁷ With pazopanib, sorafenib, and sunitinib, there is a higher incidence of other AEs: edema, HF, MI, and QTc prolongation. Baseline ECG is recommended for all patients started on pazopanib and sunitinib and for patients with a history of CVD who are started on sorafenib. An ECG is recommended for patients with a history of CVD who are started on pazopanib and sunitinib.

Even with the medication prescribing information recommendations, it is unclear how frequently patients should be monitored. At VASDHS, CV monitoring for any patient started on a TKI remains at the discretion of the oncologist. There are concerns that ordering cardiac monitoring tests, which might be unnecessary, will change or guide therapy. In this study, data evaluation revealed 1 patient who experienced a CV event had a CVD history that was not documented in the patient’s medical history. It is important that providers obtain a detailed clinical assessment of patients CV history during each visit to determine whether CV monitoring should be considered. Patients also may benefit from additional counseling to emphasize the importance of adherence to CV medication therapy to reduce the incidence of these events.

Data from this study indicate that routine CV monitoring should be considered in patients with CVD, in keeping with current medication prescribing information recommendations. Of the patients who had a CV event, 54% experienced hypertension, 18% MI, and 28% stroke, QTc prolongation, or congestive HF. 

Limitations

This retrospective study had several limitations. Many patients did not have a baseline cardiac monitoring test or any monitoring during therapy. Often, a cardiac test was performed only when the patient was symptomatic or experiencing a CV event. In addition, because of intolerance or nonadherence to therapy, many patients discontinued treatment early, before completing 30 days. That axitinib and cabozantinib are newer therapies and not first-line at VASDHS during the data collection period accounts for the small number of patients on these therapies. Therapy was shorter for patients started on pazopanib, axitinib, and cabozantinib than it was for patients on sunitinib and sorafenib. Duration of therapy may affect treatment-related events, but the majority of patients in this study experienced an event within 4 months of therapy. About half of the patients who experienced an event were nonadherent to their CV medication regimen. Another potential limitation is that this study was conducted at VASDHS, where most patients are male (RCC incidence is 2:1 male:female).

Conclusion

In this study, CV events occurred in 24% of patients with a history of CVD; 11% of these events were nonhypertensive. Baseline cardiac monitoring was not performed for most patients started on TKI therapy, but tests were performed once patients became symptomatic. The study results suggest that high-risk patients should undergo routine cardiac monitoring during the first 4 months of TKI therapy, in keeping with medication package insert monitoring recommendations. Cardiac monitoring of high-risk patients will allow for earlier identification of cardiac decline and offer opportunities for interventions, such as pharmacist-driven protocols to start CV medications. Implementation of this study’s recommendations should be evaluated to determine whether outcomes improve with routine cardiac monitoring in these high-risk patients.

Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.

Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, FrontlineMedical Communications Inc., the US Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects— before administering pharmacologic therapy to patients.

Targeted therapies have transformed the treatment of many malignant diseases by inhibiting molecular pathways involved in tumor growth and oncogenesis. Although these therapies can prevent disease progression, toxicities often result. Renal cell carcinoma (RCC) is one of many cancers that responds well to these therapies.

RCC accounts for 2% to 3% of all malignancies in adults worldwide. About 30% of patients with RCC present with metastatic or advanced disease.¹ Cytokine therapy was the standard of care until multitargeted tyrosine kinase inhibitors (TKIs) were developed. Over the past 12 years, the US Food and Drug Administration (FDA) has approved 6 TKIs for the treatment of RCC: axitinib, cabozantinib, lenvatinib, pazopanib, sorafenib, and sunitinib. Vascular endothelial growth factor receptor (VEGFR) is one of many tyrosine kinase receptors targeted by these medications. This mechanism prevents angiogenesis and consequently increases the risk for hypertension, bleeding, and clot formation.

Given these risks, many patients were excluded from the initial clinical trials of these medications if they had a history of uncontrolled hypertension, advanced heart failure (HF), or a significant cardiovascular (CV) event within 6 months prior to study enrollment. Many of these studies did not report the incidence of CV events (other than hypertension) that occurred during the early trials.² The recommended monitoring for TKI therapies is focused mainly on blood pressure. For patients on pazopanib and sunitinib therapy, baseline and periodic electrocardiograms (ECGs) are recommended; echocardiograms are recommended only for patients with a history of cardiac disease.^3,4 In patients on sorafenib therapy, ECG is recommended for those at risk for corrected QT (QTc) intervalprolongation.⁵

According to a meta-analysis of the literature published between 1966 and 2013,many studies reported a CV toxicity risk associated with the TKIs used in RCC treatment.⁶ However, some studies have found modest, not clinically significant changes in cardiac function in patients with advanced disease. In 2013, Hall and colleagues found 73% of patients they studied experienced some type of CV toxicity, whereas only 33% of patients had CV toxicity when hypertension was excluded.⁷ Interestingly, Rini and colleagues found that RCC patients receiving sunitinib had better response rates and progression-free survival when they developed hypertension compared with those who did not develop hypertension.⁸

A review of several studies revealed similar numbers in patients on TKI therapy presenting with symptomatic HF, but Hall and colleagues found that 27% of patients developed asymptomatic left ventricular dysfunction.^7,9,10 These results suggest routine monitoring may allow for appropriate preventive interventions. In patients receiving TKI therapy, CV events, including QTc prolongation, left ventricular HF, myocardial infarction (MI), hypertension, pulmonary hypertension, and stroke, were commonly reported by investigators.^7,9,10 Currently, there are no studies of the incidence of CV events for the 5 TKIs (axitinib, cabozantinib, pazopanib, sorafenib, sunitinib) in this patient population.

TKI therapy may require cardiac monitoring of all patients, as studies have associated TKIs with CV toxicity in varying degrees. Therefore, the authors set out to determine the incidence of CV events as well as time to first CV event in patients with and without a history of CV disease (CVD) who received a TKI for advanced RCC. More frequent monitoring for CV toxicity may present opportunities for clinical interventions for all patients on TKI therapy—especially for those with HF or other diseases in which the goal of therapy is to prevent disease progression. As TKIs have emerged as the standard treatment option for advanced RCC, many patients will continue therapy until disease progression or intolerable toxicity. Identifying and using appropriate monitoring parameters can lead to preventive interventions that allow patients to benefit from TKI therapy longer. At the US Department of Veterans Affairs (VA) San Diego Healthcare System (VASDHS), patients undergo routine cardiac monitoring at the discretion of the provider.

In this retrospective study, the authors wanted to determine the incidence of CV events in patients with and without a history of CVD who were receiving TKIs for advanced RCC. The authors also wanted to evaluate time to CV event from start of therapy in order to determine how often monitoring may be needed. The outcomes of this study may lead to a change in practice and development of monitoring parameters to ensure appropriate and adequate management of TKI therapy in RCC.

Methods

Each year, the VASDHS oncology team diagnose 5 to 10 patients with RCC who begin TKI therapy. When sorafenib was approved by the FDA in 2005, VASDHS estimated that about 100 of its patients had an RCC diagnosis and would be treated with a TKI between December 2005 and July 2017.

The authors identified VASDHS patients with a diagnosis of advanced RCC who received axitinib, cabozantinib, pazopanib, sorafenib, or sunitinib between December 1, 2005 and July 31, 2017. Patients were included if they had been on therapy for at least 30 days. The VASDHS pharmacy informatics team assisted in extracting a list of patients with an ICD-9 or ICD-10 diagnosis of RCC and using prescription fills for any of the 5 TKIs previously noted. Medical records were reviewed for frequency of prescription fills, age, sex, Eastern Cooperative Oncology Group (ECOG) performance status, TKI treatment duration, previous history of CVD, ethnicity, and smoking status. If documented, the incidence of CV events was reviewed for each patient at 0, 1, 3, 6, and 12 months. Patients who received medications (Appendix) for their CVD were assessed for adherence based on history of prescription refills from their medical records. Adherence was evaluated for the duration that patients were concurrently taking an oral TKI. The institutional review board at VASDHS approved the study design.

All patients included in this study started TKI therapy since the December 2005 FDA approval of sorafenib, the first oral TKI for treatment of RCC. Each new start was recorded as a separate event, regardless of previous oral TKI therapy. Albiges and colleagues found that the approximate median time from starting TKI therapy to complete response was 12.6 months, and the median duration of TKI therapy after complete response was 10.3 months.¹¹ Based on these results, the follow-up period for patients in this study was 2 years after the start of each TKI therapy. For data analysis, patients were stratified by CVD history (yes or no). In addition, composite outcomes were evaluated to identify a potential cumulative increased risk for CV events for patients who had been on multiple TKI therapies.

For this study, CV toxicities were characterized using Common Terminology Criteria for Adverse Events (CTCAE) version 4.03; severity of adverse events (AEs) was graded 1 to 5. CTCAE commonly has been used to assess AEs in oncology clinical trials. The CV AEs selected for this study included QTc prolongation, hypertension, left ventricular dysfunction, stroke, myocardial infarction (MI), and pulmonary arterial hypertension. CTCAE was not used to assess left ventricular dysfunction, as the rating is based on symptomology. Instead, worsening left ventricular ejection fraction (LVEF) was based on comparisons of ECG results at baseline with results at 1, 3, 6, and 12 months. A normal ECG result was defined as no structural change in the left ventricle, or LVEF ≥ 55%, and an abnormal result was defined as structural changes in the left ventricle, or LVEF < 55%. Given updates in blood pressure (BP) guidelines and uncertainty regarding the clinical utility of prehypertension, grade 1 hypertension was excluded as an AE.

Primary outcomes included incidence of CV events and time to first CV event after initiation of TKI therapy. Secondary outcomes included changes in ECG or echocardiogram results at 0, 1, 3, 6, and 12 months. Secondary outcomes at scheduled time points were not readily available for every patient, but any available time points were gathered to aid in identifying an optimal period for cardiac monitoring. In addition, patients with a history of CVD were evaluated for adherence to common first-line therapies for each disease.

A Fischer exact test was used to compare the incidence of CV events in patients with and without a history of CVD (significance level, α = 0.05). A subgroup analysis was used to compare the incidence of CV events in patients who experienced a CV event (significance level, α = 0.05). A Kaplan-Meier survival curve was used to determine time to first CV event. A log-rank test with significance level set at α = 0.05 also was used.

Results

An initial database search identified 134 patients who received TKI therapy at VASDHS between December 1, 2005 and July 31, 2017. According to retrospective chart review, 54 patients met the inclusion criteria for the study (Table 1).

Patients without a history of CVD (17%) did not experience any CV events while on TKI therapy. Of the patients with a history of CVD, 9 (20%) experienced ≥ 1 CV event. Fifty-five percent of the events experienced were hypertension. One patient experienced QTc prolongation, and 2 patients experienced MI. As already noted, each new start of TKI was recorded as a separate event, regardless of previous TKI therapy. Among patients with a history of CVD, 2 experienced 2 CV events. Overall, 11 CV events occurred among patients who received ≥ 1 TKI, corresponding to an overall incidence of 24% (Table 2). 

Of the 13 patients who were exposed to ≥ 2 TKI therapies, 2 experienced a CV event. Both patients were started on sunitinib and were switched to sorafenib. One of these used sunitinib for 7 months, experienced a partial response and was switched to sorafenib (with a 3-month break between therapies). The second patient was on sunitinib for 24 months, with multiple doses held because of low blood counts and diarrhea. While on sunitinib, this patient experienced a HF exacerbation, determined to be caused by the underlying disease. This event occurred 17 months after sunitinib was started, and therapy was continued for another 7 months. The patient was switched to sorafenib because of poor tolerability and disease progression. While on sorafenib, this patient experienced grade 1 QTc prolongation.

Discussion

Of the available oral TKI therapies for RCC, sunitinib and sorafenib have the most data associated with nonhypertensive CV toxicity.^2,7-10,12 Instudies, the percentage of patients who experienced CV toxicity while on sunitinib or sorafenib has ranged widely, from 2.7% to 33.8%; the variance may be attributable to differences in how institutions report CV toxicities.^7-9

According to the prescribing information for TKIs, hypertension is frequently reported as an AE for all 5 TKIs, and BP monitoring is recommended.^3,4 However, the development of hypertension with these TKIs has been associated with response to therapy.⁷ With pazopanib, sorafenib, and sunitinib, there is a higher incidence of other AEs: edema, HF, MI, and QTc prolongation. Baseline ECG is recommended for all patients started on pazopanib and sunitinib and for patients with a history of CVD who are started on sorafenib. An ECG is recommended for patients with a history of CVD who are started on pazopanib and sunitinib.

Even with the medication prescribing information recommendations, it is unclear how frequently patients should be monitored. At VASDHS, CV monitoring for any patient started on a TKI remains at the discretion of the oncologist. There are concerns that ordering cardiac monitoring tests, which might be unnecessary, will change or guide therapy. In this study, data evaluation revealed 1 patient who experienced a CV event had a CVD history that was not documented in the patient’s medical history. It is important that providers obtain a detailed clinical assessment of patients CV history during each visit to determine whether CV monitoring should be considered. Patients also may benefit from additional counseling to emphasize the importance of adherence to CV medication therapy to reduce the incidence of these events.

Data from this study indicate that routine CV monitoring should be considered in patients with CVD, in keeping with current medication prescribing information recommendations. Of the patients who had a CV event, 54% experienced hypertension, 18% MI, and 28% stroke, QTc prolongation, or congestive HF. 

Limitations

This retrospective study had several limitations. Many patients did not have a baseline cardiac monitoring test or any monitoring during therapy. Often, a cardiac test was performed only when the patient was symptomatic or experiencing a CV event. In addition, because of intolerance or nonadherence to therapy, many patients discontinued treatment early, before completing 30 days. That axitinib and cabozantinib are newer therapies and not first-line at VASDHS during the data collection period accounts for the small number of patients on these therapies. Therapy was shorter for patients started on pazopanib, axitinib, and cabozantinib than it was for patients on sunitinib and sorafenib. Duration of therapy may affect treatment-related events, but the majority of patients in this study experienced an event within 4 months of therapy. About half of the patients who experienced an event were nonadherent to their CV medication regimen. Another potential limitation is that this study was conducted at VASDHS, where most patients are male (RCC incidence is 2:1 male:female).

Conclusion

In this study, CV events occurred in 24% of patients with a history of CVD; 11% of these events were nonhypertensive. Baseline cardiac monitoring was not performed for most patients started on TKI therapy, but tests were performed once patients became symptomatic. The study results suggest that high-risk patients should undergo routine cardiac monitoring during the first 4 months of TKI therapy, in keeping with medication package insert monitoring recommendations. Cardiac monitoring of high-risk patients will allow for earlier identification of cardiac decline and offer opportunities for interventions, such as pharmacist-driven protocols to start CV medications. Implementation of this study’s recommendations should be evaluated to determine whether outcomes improve with routine cardiac monitoring in these high-risk patients.

Author disclosures
The authors report no actual or potential conflicts of interest with regard to this article.

Disclaimer
The opinions expressed herein are those of the authors and do not necessarily reflect those of Federal Practitioner, FrontlineMedical Communications Inc., the US Government, or any of its agencies. This article may discuss unlabeled or investigational use of certain drugs. Please review the complete prescribing information for specific drugs or drug combinations—including indications, contraindications, warnings, and adverse effects— before administering pharmacologic therapy to patients.

Out-of-hospital cardiac arrests increased 58% during the peak of the COVID-19 outbreak in the hard-hit region of Lombardy, Italy, compared with the same period last year, a new analysis shows.

During the first 40 days of the outbreak beginning Feb. 21, four provinces in northern Italy reported 362 cases of out-of-hospital cardiac arrest compared with 229 during the same period in 2019.

The increases in these provinces varied in magnitude from 18% in Mantua, where there were 1,688 confirmed COVID-19 cases, to 187% in Lodi, which had 2,116 COVID-19 cases. The Cremona province, which had the highest number of COVID-19 cases at 3,869, saw a 143% increase in out-of-hospital cardiac arrests.

The mortality rate in the field was 14.9 percentage points higher in 2020 than in 2019 among patients in whom resuscitation was attempted by emergency medical services (EMS), Enrico Baldi, MD, University of Pavia, Italy, and colleagues reported in a letter April 29 in the New England Journal of Medicine.

“The sex and age of the patients were similar in the 2020 and 2019 periods, but in 2020, the incidence of out-of-hospital cardiac arrest due to a medical cause was 6.5 percentage points higher, the incidence of out-of-hospital cardiac arrest at home was 7.3 percentage points higher, and the incidence of unwitnessed cardiac arrest was 11.3 percentage points higher,” the authors wrote.

Patients were also less likely to receive cardiopulmonary resuscitation from bystanders in 2020 vs 2019 (–15.6 percentage points) and were more likely to die before reaching the hospital when resuscitation was attempted by EMS (+14.9 percentage points).

Among all patients, the death rate in the field increased 11.4 percentage points during the outbreak, from 77.3% in 2019 to 88.7% in 2020.

The cumulative incidence of out-of-hospital cardiac arrest in 2020 was “strongly associated” with the cumulative incidence of COVID-19 (Spearman rank correlation coefficient, 0.87; 95% confidence interval, 0.83-0.91) and the spike in cases “followed the time course of the COVID-19 outbreak,” the researchers noted.

A total of 103 patients, who arrested out of hospital and were diagnosed with or suspected of having COVID-19, “account for 77.4% of the increase in cases of out-of-hospital cardiac arrest observed in these provinces in 2020,” the investigators noted.

As the pandemic has taken hold, hospitals and physicians across the United States are also voicing concerns about the drop in the number of patients presenting with myocardial infarction (MI) or stroke.

Nearly one-third of Americans (29%) report having delayed or avoided medical care because of concerns of catching COVID-19, according to a new poll released April 28 from the American College of Emergency Physicians (ACEP) and Morning Consult, a global data research firm.

Despite many emergency departments reporting a decline in patient volume, 74% of respondents said they were worried about hospital wait times and overcrowding. Another 59% expressed concerns about being turned away from the hospital or doctor’s office.

At the same time, the survey found strong support for emergency physicians and 73% of respondents said they were concerned about overstressing the health care system.

The drop-off in Americans seeking care for MI and strokes nationally prompted eight professional societies – including ACEP, the American Heart Association, and the Association of Black Cardiologists – to issue a joint statement urging those experiencing symptoms to call 911 and seek care for these life-threatening events.

The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Out-of-hospital cardiac arrests increased 58% during the peak of the COVID-19 outbreak in the hard-hit region of Lombardy, Italy, compared with the same period last year, a new analysis shows.

During the first 40 days of the outbreak beginning Feb. 21, four provinces in northern Italy reported 362 cases of out-of-hospital cardiac arrest compared with 229 during the same period in 2019.

The increases in these provinces varied in magnitude from 18% in Mantua, where there were 1,688 confirmed COVID-19 cases, to 187% in Lodi, which had 2,116 COVID-19 cases. The Cremona province, which had the highest number of COVID-19 cases at 3,869, saw a 143% increase in out-of-hospital cardiac arrests.

The mortality rate in the field was 14.9 percentage points higher in 2020 than in 2019 among patients in whom resuscitation was attempted by emergency medical services (EMS), Enrico Baldi, MD, University of Pavia, Italy, and colleagues reported in a letter April 29 in the New England Journal of Medicine.

“The sex and age of the patients were similar in the 2020 and 2019 periods, but in 2020, the incidence of out-of-hospital cardiac arrest due to a medical cause was 6.5 percentage points higher, the incidence of out-of-hospital cardiac arrest at home was 7.3 percentage points higher, and the incidence of unwitnessed cardiac arrest was 11.3 percentage points higher,” the authors wrote.

Patients were also less likely to receive cardiopulmonary resuscitation from bystanders in 2020 vs 2019 (–15.6 percentage points) and were more likely to die before reaching the hospital when resuscitation was attempted by EMS (+14.9 percentage points).

Among all patients, the death rate in the field increased 11.4 percentage points during the outbreak, from 77.3% in 2019 to 88.7% in 2020.

The cumulative incidence of out-of-hospital cardiac arrest in 2020 was “strongly associated” with the cumulative incidence of COVID-19 (Spearman rank correlation coefficient, 0.87; 95% confidence interval, 0.83-0.91) and the spike in cases “followed the time course of the COVID-19 outbreak,” the researchers noted.

A total of 103 patients, who arrested out of hospital and were diagnosed with or suspected of having COVID-19, “account for 77.4% of the increase in cases of out-of-hospital cardiac arrest observed in these provinces in 2020,” the investigators noted.

As the pandemic has taken hold, hospitals and physicians across the United States are also voicing concerns about the drop in the number of patients presenting with myocardial infarction (MI) or stroke.

Nearly one-third of Americans (29%) report having delayed or avoided medical care because of concerns of catching COVID-19, according to a new poll released April 28 from the American College of Emergency Physicians (ACEP) and Morning Consult, a global data research firm.

Despite many emergency departments reporting a decline in patient volume, 74% of respondents said they were worried about hospital wait times and overcrowding. Another 59% expressed concerns about being turned away from the hospital or doctor’s office.

At the same time, the survey found strong support for emergency physicians and 73% of respondents said they were concerned about overstressing the health care system.

The drop-off in Americans seeking care for MI and strokes nationally prompted eight professional societies – including ACEP, the American Heart Association, and the Association of Black Cardiologists – to issue a joint statement urging those experiencing symptoms to call 911 and seek care for these life-threatening events.

The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Out-of-hospital cardiac arrests increased 58% during the peak of the COVID-19 outbreak in the hard-hit region of Lombardy, Italy, compared with the same period last year, a new analysis shows.

During the first 40 days of the outbreak beginning Feb. 21, four provinces in northern Italy reported 362 cases of out-of-hospital cardiac arrest compared with 229 during the same period in 2019.

The increases in these provinces varied in magnitude from 18% in Mantua, where there were 1,688 confirmed COVID-19 cases, to 187% in Lodi, which had 2,116 COVID-19 cases. The Cremona province, which had the highest number of COVID-19 cases at 3,869, saw a 143% increase in out-of-hospital cardiac arrests.

The mortality rate in the field was 14.9 percentage points higher in 2020 than in 2019 among patients in whom resuscitation was attempted by emergency medical services (EMS), Enrico Baldi, MD, University of Pavia, Italy, and colleagues reported in a letter April 29 in the New England Journal of Medicine.

“The sex and age of the patients were similar in the 2020 and 2019 periods, but in 2020, the incidence of out-of-hospital cardiac arrest due to a medical cause was 6.5 percentage points higher, the incidence of out-of-hospital cardiac arrest at home was 7.3 percentage points higher, and the incidence of unwitnessed cardiac arrest was 11.3 percentage points higher,” the authors wrote.

Patients were also less likely to receive cardiopulmonary resuscitation from bystanders in 2020 vs 2019 (–15.6 percentage points) and were more likely to die before reaching the hospital when resuscitation was attempted by EMS (+14.9 percentage points).

Among all patients, the death rate in the field increased 11.4 percentage points during the outbreak, from 77.3% in 2019 to 88.7% in 2020.

The cumulative incidence of out-of-hospital cardiac arrest in 2020 was “strongly associated” with the cumulative incidence of COVID-19 (Spearman rank correlation coefficient, 0.87; 95% confidence interval, 0.83-0.91) and the spike in cases “followed the time course of the COVID-19 outbreak,” the researchers noted.

A total of 103 patients, who arrested out of hospital and were diagnosed with or suspected of having COVID-19, “account for 77.4% of the increase in cases of out-of-hospital cardiac arrest observed in these provinces in 2020,” the investigators noted.

As the pandemic has taken hold, hospitals and physicians across the United States are also voicing concerns about the drop in the number of patients presenting with myocardial infarction (MI) or stroke.

Nearly one-third of Americans (29%) report having delayed or avoided medical care because of concerns of catching COVID-19, according to a new poll released April 28 from the American College of Emergency Physicians (ACEP) and Morning Consult, a global data research firm.

Despite many emergency departments reporting a decline in patient volume, 74% of respondents said they were worried about hospital wait times and overcrowding. Another 59% expressed concerns about being turned away from the hospital or doctor’s office.

At the same time, the survey found strong support for emergency physicians and 73% of respondents said they were concerned about overstressing the health care system.

The drop-off in Americans seeking care for MI and strokes nationally prompted eight professional societies – including ACEP, the American Heart Association, and the Association of Black Cardiologists – to issue a joint statement urging those experiencing symptoms to call 911 and seek care for these life-threatening events.

The authors have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

A just-launched study of the type 2 diabetes agent dapagliflozin (Farxiga, AstraZeneca) in patients with mild to moderate COVID-19 is raising eyebrows, given that several expert groups have advised that drugs in this class – the sodium-glucose cotransporter 2 (SGLT2) inhibitors – be stopped in all patients hospitalized with COVID-19 because of the increased risk for diabetic ketoacidosis (DKA).

The randomized, double-blind, placebo-controlled, phase 3 Dapagliflozin in Respiratory Failure in Patients With COVID-19 (DARE-19) study is sponsored by AstraZeneca and Saint Luke’s Mid America Heart Institute.

The trial will assess whether dapagliflozin reduces the risks of disease progression, clinical complications, and death because of COVID-19 in patients with type 2 diabetes, cardiovascular disease, and/or mild to moderate chronic kidney disease (CKD).

“Dapagliflozin has demonstrated cardio- and renal-protective benefits and improved outcomes in high-risk patients with type 2 diabetes, heart failure with reduced ejection fraction, and CKD,” said the principal investigator of DARE-19, Mikhail N. Kosiborod, MD, a cardiologist at Saint Luke’s Mid America Heart Institute, Kansas City, Mo.

And “patients with COVID-19 and underlying cardiometabolic disease appear to be at the highest risk of morbid complications,” he explained in an AstraZeneca statement.

“Through DARE-19, we hope to decrease the severity of illness, and prevent cardiovascular, respiratory, and kidney decompensation, which are common in patients with COVID-19,” Dr. Kosiborod continued.

However, advice to stop SGLT2 inhibitors in patients hospitalized with COVID-19 because of its associated DKA risk has come from several channels.

These include initial guidance from Diabetes UK; experts who spoke during an American Diabetes Association webinar; and most recently, an international panel of diabetes experts.

Some clinicians went so far as to say that they view the trial as potentially dangerous, while others said they could see some logic to it, as long as it is carefully managed.
 

“A dangerous proposition – a DARE I would not take”

Partha Kar, MD, of Portsmouth Hospitals NHS Trust and national clinical director of diabetes at NHS England, said in an interview: “It’s interesting to see [AstraZeneca] embark on a study with a particular class of drug whereby ... [in] the UK we have said that if you get sent to hospital with COVID-19 you should stop [SGLT2 inhibitors] immediately.”

It “sounds like a risky proposition to go ahead with, [and it] definitely made me raise an eyebrow,” he added.

Nephrologist Bruce R. Leslie, MD, of Seventh Doctor Consulting in Princeton, N.J., agreed with Dr. Kar.

“Giving SGLT2 inhibitors to patients in the DARE-19 study is a dangerous proposition because these drugs can induce ketoacidosis during the stress of acute illness such as COVID-19. ... Moreover, ketoacidosis is associated with hypercoagulability which could be especially dangerous in COVID-19, given that it has been causing thrombophilia with large-vessel occlusive strokes in young patients,” he said in an interview.

“One wonders how these risks were assessed by the authorities that approved the DARE-19 study,” said Dr. Leslie, who formerly worked for Bristol-Myers Squibb.

“How does the sponsor intend to secure informed consent given the risks? This is a DARE I would not take,” he said.

Asked to address these concerns, Dr. Kosiborod said in an interview that “the DARE-19 trial will assess both the efficacy and the safety of dapagliflozin in this patient population in a closely monitored environment of a rigorously designed randomized clinical trial. The trial protocol excludes patients with type 1 diabetes or at high risk for DKA.

“Furthermore, the protocol includes detailed specific instructions to ensure careful monitoring for DKA, including frequent assessments of acid-base status in the hospital setting. The safety data will be closely monitored by an independent data-monitoring committee,” he continued.

Dr. Kosiborod also pointed out that there is “no systematically collected information on the use of dapagliflozin or any other SGLT2 inhibitor in patients being treated for COVID-19, including the associated potential benefits, possible risks such as DKA, and the balance of these potential benefits and risks.”

DARE-19 design: Several outcomes will be examined

The DARE-19 trial is designed to enroll 900 adults with confirmed SARS-CoV-2 infection and oxygen saturation of 94% or greater.

Inclusion criteria include a medical history of hypertension, type 2 diabetes, atherosclerotic cardiovascular disease, heart failure, and/or stage 3-4 CKD. Exclusion criteria include current SGLT2 inhibitor treatment, type 1 diabetes, severe CKD, and severe COVID-19.

Dapagliflozin is approved in the EU for use in some patients with type 1 diabetes; this is not the case in the United States, although SGLT2 inhibitors in general are sometimes used off label in these patients.

Patients in DARE-19 will be randomized to 10 mg/day dapagliflozin or placebo for 30 days, in addition to standard care, in participating hospital. Primary outcomes are time to first occurrence of either death or new or worsened organ dysfunction, including respiratory decompensation, new or worsening heart failure, requirement for vasopressor therapy, ventricular tachycardia, and renal failure.

Secondary outcomes include a composite of time to death from any cause, time to new/worsened organ dysfunction, clinical status at day 30, and time to hospital discharge.

Rationale for the study

Irl B. Hirsch, MD, professor and diabetes treatment and teaching chair at the University of Washington, Seattle, said in an interview that he does see some logic to the trial.

Admitting that he doesn’t know much about “COVID-19 cardiomyopathy” – which would be one of the targets of dapagliflozin – other than it is quite common, he said that this, along with the potential renal benefits of dapagliflozin in the setting of COVID-19, make the study “intriguing.”

“Perhaps there is some rationale to it,” he said. However, “my concern is these sick COVID-19 patients are often acidemic, and besides the very complex acid-base challenges we see with intubated patients, these patients likely have combination lactic and ketoacidemia, the latter at least some from starvation.

“Still, if enough dextrose and insulin are provided to prevent ketoacid accumulation, my guess is it would do at least as well as hydroxychloroquine,” he said.

And Simon Heller, MD, professor of clinical diabetes at the University of Sheffield (England), said in an interview: “I think it is quite a brave study, mainly because of the increased risk of DKA.

“However, on the basis that these patients will be carefully monitored, the risk of DKA shouldn’t be great. I think it is important that patients with type 2 diabetes can participate whenever possible in such trials,” he said.

The estimated completion date for DARE-19 is December 2020.

Dr. Kosiborod has reported receiving grant support, honoraria, and/or research support from AstraZeneca, Boehringer Ingelheim, Sanofi, Amgen, Novo Nordisk, Merck, Eisai, Janssen, Bayer, GlaxoSmithKline, Glytec, Intarcia Therapeutics, Novartis, Applied Therapeutics, Amarin, and Eli Lilly. Dr. Leslie has reported owning stock in Bristol-Myers Squibb, Pfizer, and Lilly. Dr. Hirsch has reported consulting for Abbott Diabetes Care, Roche, and Bigfoot Biomedical, conducting research for Medtronic, and is a diabetes editor for UpToDate. Dr. Heller has received advisory or consultation fees from Lilly, Novo Nordisk, Takeda, MSD, and Becton Dickinson; has served as a speaker for AstraZeneca, Lilly, Novo Nordisk, Boehringer Ingelheim, and Takeda; and has received research support from Medtronic UK. He is on the advisory board for Medscape. Dr. Kar has reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

A just-launched study of the type 2 diabetes agent dapagliflozin (Farxiga, AstraZeneca) in patients with mild to moderate COVID-19 is raising eyebrows, given that several expert groups have advised that drugs in this class – the sodium-glucose cotransporter 2 (SGLT2) inhibitors – be stopped in all patients hospitalized with COVID-19 because of the increased risk for diabetic ketoacidosis (DKA).

The randomized, double-blind, placebo-controlled, phase 3 Dapagliflozin in Respiratory Failure in Patients With COVID-19 (DARE-19) study is sponsored by AstraZeneca and Saint Luke’s Mid America Heart Institute.

The trial will assess whether dapagliflozin reduces the risks of disease progression, clinical complications, and death because of COVID-19 in patients with type 2 diabetes, cardiovascular disease, and/or mild to moderate chronic kidney disease (CKD).

“Dapagliflozin has demonstrated cardio- and renal-protective benefits and improved outcomes in high-risk patients with type 2 diabetes, heart failure with reduced ejection fraction, and CKD,” said the principal investigator of DARE-19, Mikhail N. Kosiborod, MD, a cardiologist at Saint Luke’s Mid America Heart Institute, Kansas City, Mo.

And “patients with COVID-19 and underlying cardiometabolic disease appear to be at the highest risk of morbid complications,” he explained in an AstraZeneca statement.

“Through DARE-19, we hope to decrease the severity of illness, and prevent cardiovascular, respiratory, and kidney decompensation, which are common in patients with COVID-19,” Dr. Kosiborod continued.

However, advice to stop SGLT2 inhibitors in patients hospitalized with COVID-19 because of its associated DKA risk has come from several channels.

These include initial guidance from Diabetes UK; experts who spoke during an American Diabetes Association webinar; and most recently, an international panel of diabetes experts.

Some clinicians went so far as to say that they view the trial as potentially dangerous, while others said they could see some logic to it, as long as it is carefully managed.
 

“A dangerous proposition – a DARE I would not take”

Partha Kar, MD, of Portsmouth Hospitals NHS Trust and national clinical director of diabetes at NHS England, said in an interview: “It’s interesting to see [AstraZeneca] embark on a study with a particular class of drug whereby ... [in] the UK we have said that if you get sent to hospital with COVID-19 you should stop [SGLT2 inhibitors] immediately.”

It “sounds like a risky proposition to go ahead with, [and it] definitely made me raise an eyebrow,” he added.

Nephrologist Bruce R. Leslie, MD, of Seventh Doctor Consulting in Princeton, N.J., agreed with Dr. Kar.

“Giving SGLT2 inhibitors to patients in the DARE-19 study is a dangerous proposition because these drugs can induce ketoacidosis during the stress of acute illness such as COVID-19. ... Moreover, ketoacidosis is associated with hypercoagulability which could be especially dangerous in COVID-19, given that it has been causing thrombophilia with large-vessel occlusive strokes in young patients,” he said in an interview.

“One wonders how these risks were assessed by the authorities that approved the DARE-19 study,” said Dr. Leslie, who formerly worked for Bristol-Myers Squibb.

“How does the sponsor intend to secure informed consent given the risks? This is a DARE I would not take,” he said.

Asked to address these concerns, Dr. Kosiborod said in an interview that “the DARE-19 trial will assess both the efficacy and the safety of dapagliflozin in this patient population in a closely monitored environment of a rigorously designed randomized clinical trial. The trial protocol excludes patients with type 1 diabetes or at high risk for DKA.

“Furthermore, the protocol includes detailed specific instructions to ensure careful monitoring for DKA, including frequent assessments of acid-base status in the hospital setting. The safety data will be closely monitored by an independent data-monitoring committee,” he continued.

Dr. Kosiborod also pointed out that there is “no systematically collected information on the use of dapagliflozin or any other SGLT2 inhibitor in patients being treated for COVID-19, including the associated potential benefits, possible risks such as DKA, and the balance of these potential benefits and risks.”

DARE-19 design: Several outcomes will be examined

The DARE-19 trial is designed to enroll 900 adults with confirmed SARS-CoV-2 infection and oxygen saturation of 94% or greater.

Inclusion criteria include a medical history of hypertension, type 2 diabetes, atherosclerotic cardiovascular disease, heart failure, and/or stage 3-4 CKD. Exclusion criteria include current SGLT2 inhibitor treatment, type 1 diabetes, severe CKD, and severe COVID-19.

Dapagliflozin is approved in the EU for use in some patients with type 1 diabetes; this is not the case in the United States, although SGLT2 inhibitors in general are sometimes used off label in these patients.

Patients in DARE-19 will be randomized to 10 mg/day dapagliflozin or placebo for 30 days, in addition to standard care, in participating hospital. Primary outcomes are time to first occurrence of either death or new or worsened organ dysfunction, including respiratory decompensation, new or worsening heart failure, requirement for vasopressor therapy, ventricular tachycardia, and renal failure.

Secondary outcomes include a composite of time to death from any cause, time to new/worsened organ dysfunction, clinical status at day 30, and time to hospital discharge.

Rationale for the study

Irl B. Hirsch, MD, professor and diabetes treatment and teaching chair at the University of Washington, Seattle, said in an interview that he does see some logic to the trial.

Admitting that he doesn’t know much about “COVID-19 cardiomyopathy” – which would be one of the targets of dapagliflozin – other than it is quite common, he said that this, along with the potential renal benefits of dapagliflozin in the setting of COVID-19, make the study “intriguing.”

“Perhaps there is some rationale to it,” he said. However, “my concern is these sick COVID-19 patients are often acidemic, and besides the very complex acid-base challenges we see with intubated patients, these patients likely have combination lactic and ketoacidemia, the latter at least some from starvation.

“Still, if enough dextrose and insulin are provided to prevent ketoacid accumulation, my guess is it would do at least as well as hydroxychloroquine,” he said.

And Simon Heller, MD, professor of clinical diabetes at the University of Sheffield (England), said in an interview: “I think it is quite a brave study, mainly because of the increased risk of DKA.

“However, on the basis that these patients will be carefully monitored, the risk of DKA shouldn’t be great. I think it is important that patients with type 2 diabetes can participate whenever possible in such trials,” he said.

The estimated completion date for DARE-19 is December 2020.

Dr. Kosiborod has reported receiving grant support, honoraria, and/or research support from AstraZeneca, Boehringer Ingelheim, Sanofi, Amgen, Novo Nordisk, Merck, Eisai, Janssen, Bayer, GlaxoSmithKline, Glytec, Intarcia Therapeutics, Novartis, Applied Therapeutics, Amarin, and Eli Lilly. Dr. Leslie has reported owning stock in Bristol-Myers Squibb, Pfizer, and Lilly. Dr. Hirsch has reported consulting for Abbott Diabetes Care, Roche, and Bigfoot Biomedical, conducting research for Medtronic, and is a diabetes editor for UpToDate. Dr. Heller has received advisory or consultation fees from Lilly, Novo Nordisk, Takeda, MSD, and Becton Dickinson; has served as a speaker for AstraZeneca, Lilly, Novo Nordisk, Boehringer Ingelheim, and Takeda; and has received research support from Medtronic UK. He is on the advisory board for Medscape. Dr. Kar has reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

A just-launched study of the type 2 diabetes agent dapagliflozin (Farxiga, AstraZeneca) in patients with mild to moderate COVID-19 is raising eyebrows, given that several expert groups have advised that drugs in this class – the sodium-glucose cotransporter 2 (SGLT2) inhibitors – be stopped in all patients hospitalized with COVID-19 because of the increased risk for diabetic ketoacidosis (DKA).

The randomized, double-blind, placebo-controlled, phase 3 Dapagliflozin in Respiratory Failure in Patients With COVID-19 (DARE-19) study is sponsored by AstraZeneca and Saint Luke’s Mid America Heart Institute.

The trial will assess whether dapagliflozin reduces the risks of disease progression, clinical complications, and death because of COVID-19 in patients with type 2 diabetes, cardiovascular disease, and/or mild to moderate chronic kidney disease (CKD).

“Dapagliflozin has demonstrated cardio- and renal-protective benefits and improved outcomes in high-risk patients with type 2 diabetes, heart failure with reduced ejection fraction, and CKD,” said the principal investigator of DARE-19, Mikhail N. Kosiborod, MD, a cardiologist at Saint Luke’s Mid America Heart Institute, Kansas City, Mo.

And “patients with COVID-19 and underlying cardiometabolic disease appear to be at the highest risk of morbid complications,” he explained in an AstraZeneca statement.

“Through DARE-19, we hope to decrease the severity of illness, and prevent cardiovascular, respiratory, and kidney decompensation, which are common in patients with COVID-19,” Dr. Kosiborod continued.

However, advice to stop SGLT2 inhibitors in patients hospitalized with COVID-19 because of its associated DKA risk has come from several channels.

These include initial guidance from Diabetes UK; experts who spoke during an American Diabetes Association webinar; and most recently, an international panel of diabetes experts.

Some clinicians went so far as to say that they view the trial as potentially dangerous, while others said they could see some logic to it, as long as it is carefully managed.
 

“A dangerous proposition – a DARE I would not take”

Partha Kar, MD, of Portsmouth Hospitals NHS Trust and national clinical director of diabetes at NHS England, said in an interview: “It’s interesting to see [AstraZeneca] embark on a study with a particular class of drug whereby ... [in] the UK we have said that if you get sent to hospital with COVID-19 you should stop [SGLT2 inhibitors] immediately.”

It “sounds like a risky proposition to go ahead with, [and it] definitely made me raise an eyebrow,” he added.

Nephrologist Bruce R. Leslie, MD, of Seventh Doctor Consulting in Princeton, N.J., agreed with Dr. Kar.

“Giving SGLT2 inhibitors to patients in the DARE-19 study is a dangerous proposition because these drugs can induce ketoacidosis during the stress of acute illness such as COVID-19. ... Moreover, ketoacidosis is associated with hypercoagulability which could be especially dangerous in COVID-19, given that it has been causing thrombophilia with large-vessel occlusive strokes in young patients,” he said in an interview.

“One wonders how these risks were assessed by the authorities that approved the DARE-19 study,” said Dr. Leslie, who formerly worked for Bristol-Myers Squibb.

“How does the sponsor intend to secure informed consent given the risks? This is a DARE I would not take,” he said.

Asked to address these concerns, Dr. Kosiborod said in an interview that “the DARE-19 trial will assess both the efficacy and the safety of dapagliflozin in this patient population in a closely monitored environment of a rigorously designed randomized clinical trial. The trial protocol excludes patients with type 1 diabetes or at high risk for DKA.

“Furthermore, the protocol includes detailed specific instructions to ensure careful monitoring for DKA, including frequent assessments of acid-base status in the hospital setting. The safety data will be closely monitored by an independent data-monitoring committee,” he continued.

Dr. Kosiborod also pointed out that there is “no systematically collected information on the use of dapagliflozin or any other SGLT2 inhibitor in patients being treated for COVID-19, including the associated potential benefits, possible risks such as DKA, and the balance of these potential benefits and risks.”

DARE-19 design: Several outcomes will be examined

The DARE-19 trial is designed to enroll 900 adults with confirmed SARS-CoV-2 infection and oxygen saturation of 94% or greater.

Inclusion criteria include a medical history of hypertension, type 2 diabetes, atherosclerotic cardiovascular disease, heart failure, and/or stage 3-4 CKD. Exclusion criteria include current SGLT2 inhibitor treatment, type 1 diabetes, severe CKD, and severe COVID-19.

Dapagliflozin is approved in the EU for use in some patients with type 1 diabetes; this is not the case in the United States, although SGLT2 inhibitors in general are sometimes used off label in these patients.

Patients in DARE-19 will be randomized to 10 mg/day dapagliflozin or placebo for 30 days, in addition to standard care, in participating hospital. Primary outcomes are time to first occurrence of either death or new or worsened organ dysfunction, including respiratory decompensation, new or worsening heart failure, requirement for vasopressor therapy, ventricular tachycardia, and renal failure.

Secondary outcomes include a composite of time to death from any cause, time to new/worsened organ dysfunction, clinical status at day 30, and time to hospital discharge.

Rationale for the study

Irl B. Hirsch, MD, professor and diabetes treatment and teaching chair at the University of Washington, Seattle, said in an interview that he does see some logic to the trial.

Admitting that he doesn’t know much about “COVID-19 cardiomyopathy” – which would be one of the targets of dapagliflozin – other than it is quite common, he said that this, along with the potential renal benefits of dapagliflozin in the setting of COVID-19, make the study “intriguing.”

“Perhaps there is some rationale to it,” he said. However, “my concern is these sick COVID-19 patients are often acidemic, and besides the very complex acid-base challenges we see with intubated patients, these patients likely have combination lactic and ketoacidemia, the latter at least some from starvation.

“Still, if enough dextrose and insulin are provided to prevent ketoacid accumulation, my guess is it would do at least as well as hydroxychloroquine,” he said.

And Simon Heller, MD, professor of clinical diabetes at the University of Sheffield (England), said in an interview: “I think it is quite a brave study, mainly because of the increased risk of DKA.

“However, on the basis that these patients will be carefully monitored, the risk of DKA shouldn’t be great. I think it is important that patients with type 2 diabetes can participate whenever possible in such trials,” he said.

The estimated completion date for DARE-19 is December 2020.

Dr. Kosiborod has reported receiving grant support, honoraria, and/or research support from AstraZeneca, Boehringer Ingelheim, Sanofi, Amgen, Novo Nordisk, Merck, Eisai, Janssen, Bayer, GlaxoSmithKline, Glytec, Intarcia Therapeutics, Novartis, Applied Therapeutics, Amarin, and Eli Lilly. Dr. Leslie has reported owning stock in Bristol-Myers Squibb, Pfizer, and Lilly. Dr. Hirsch has reported consulting for Abbott Diabetes Care, Roche, and Bigfoot Biomedical, conducting research for Medtronic, and is a diabetes editor for UpToDate. Dr. Heller has received advisory or consultation fees from Lilly, Novo Nordisk, Takeda, MSD, and Becton Dickinson; has served as a speaker for AstraZeneca, Lilly, Novo Nordisk, Boehringer Ingelheim, and Takeda; and has received research support from Medtronic UK. He is on the advisory board for Medscape. Dr. Kar has reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.