Jake Remaly

Boys born to mothers infected with SARS‐CoV‐2 during pregnancy may be more likely to receive a diagnosis of a neurodevelopmental disorder by age 12 months, according to new research.

Andrea G. Edlow, MD, MSc, with Massachusetts General Hospital and Harvard Medical School in Boston, and colleagues examined data from 18,355 births between March 1, 2020, and May 31, 2021, at eight hospitals across two health systems in Massachusetts.

Of these births, 883 (4.8%) were to individuals who tested positive for SARS‐CoV‐2 during pregnancy. Among the children exposed to SARS‐CoV‐2 in the womb, 26 (3%) received a neurodevelopmental diagnosis, including disorders of motor function, speech and language, and psychological development, by age 1 year. In the group unexposed to the virus, 1.8% received such a diagnosis.

After adjusting for factors such as race, insurance, maternal age, and preterm birth, Dr. Edlow’s group found that a positive test for SARS-CoV-2 during pregnancy was  associated with an increased risk for neurodevelopmental diagnoses at 12 months among boys (adjusted odds ratio, 1.94; 95% confidence interval, 1.12-3.17; P = .01), but not among girls.

In a subset of children with data available at 18 months, the correlation among boys at that age was less pronounced and not statistically significant (aOR, 1.42; 95% CI, 0.92-2.11; P = .10).  

The findings were published online in JAMA Network Open

Prior epidemiological research has suggested that maternal infection during pregnancy is associated with heightened risk for a range of neurodevelopmental disorders, including autism and schizophrenia, in offspring, the authors wrote.

“The neurodevelopmental risk associated with maternal SARS-CoV-2 infection was disproportionately high in male infants, consistent with the known increased vulnerability of males in the face of prenatal adverse exposures,” Dr. Edlow said in a news release about the findings.

Larger studies and longer follow‐up are needed to confirm and reliably estimate the risk, the researchers said.

“It is not clear that the changes we can detect at 12 and 18 months will be indicative of persistent risks for disorders such as autism spectrum disorder, intellectual disability, or schizophrenia,” they write.

New data published online by the Centers for Disease Control and Prevention show that in 11 communities in 2020, 1 in 36 (2.8%) 8-year-old children had been identified with autism spectrum disorder, an increase from 2.3% in 2018. The data also show that the early months of the pandemic may have disrupted autism detection efforts among 4-year-olds.

The investigators were supported by grants from the National Institutes of Health and the Simons Foundation Autism Research Initiative. Coauthors disclosed consulting for or receiving personal fees from biotechnology and pharmaceutical companies.

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

Boys born to mothers infected with SARS‐CoV‐2 during pregnancy may be more likely to receive a diagnosis of a neurodevelopmental disorder by age 12 months, according to new research.

Andrea G. Edlow, MD, MSc, with Massachusetts General Hospital and Harvard Medical School in Boston, and colleagues examined data from 18,355 births between March 1, 2020, and May 31, 2021, at eight hospitals across two health systems in Massachusetts.

Of these births, 883 (4.8%) were to individuals who tested positive for SARS‐CoV‐2 during pregnancy. Among the children exposed to SARS‐CoV‐2 in the womb, 26 (3%) received a neurodevelopmental diagnosis, including disorders of motor function, speech and language, and psychological development, by age 1 year. In the group unexposed to the virus, 1.8% received such a diagnosis.

After adjusting for factors such as race, insurance, maternal age, and preterm birth, Dr. Edlow’s group found that a positive test for SARS-CoV-2 during pregnancy was  associated with an increased risk for neurodevelopmental diagnoses at 12 months among boys (adjusted odds ratio, 1.94; 95% confidence interval, 1.12-3.17; P = .01), but not among girls.

In a subset of children with data available at 18 months, the correlation among boys at that age was less pronounced and not statistically significant (aOR, 1.42; 95% CI, 0.92-2.11; P = .10).  

The findings were published online in JAMA Network Open

Prior epidemiological research has suggested that maternal infection during pregnancy is associated with heightened risk for a range of neurodevelopmental disorders, including autism and schizophrenia, in offspring, the authors wrote.

“The neurodevelopmental risk associated with maternal SARS-CoV-2 infection was disproportionately high in male infants, consistent with the known increased vulnerability of males in the face of prenatal adverse exposures,” Dr. Edlow said in a news release about the findings.

Larger studies and longer follow‐up are needed to confirm and reliably estimate the risk, the researchers said.

“It is not clear that the changes we can detect at 12 and 18 months will be indicative of persistent risks for disorders such as autism spectrum disorder, intellectual disability, or schizophrenia,” they write.

New data published online by the Centers for Disease Control and Prevention show that in 11 communities in 2020, 1 in 36 (2.8%) 8-year-old children had been identified with autism spectrum disorder, an increase from 2.3% in 2018. The data also show that the early months of the pandemic may have disrupted autism detection efforts among 4-year-olds.

The investigators were supported by grants from the National Institutes of Health and the Simons Foundation Autism Research Initiative. Coauthors disclosed consulting for or receiving personal fees from biotechnology and pharmaceutical companies.

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

Boys born to mothers infected with SARS‐CoV‐2 during pregnancy may be more likely to receive a diagnosis of a neurodevelopmental disorder by age 12 months, according to new research.

Andrea G. Edlow, MD, MSc, with Massachusetts General Hospital and Harvard Medical School in Boston, and colleagues examined data from 18,355 births between March 1, 2020, and May 31, 2021, at eight hospitals across two health systems in Massachusetts.

Of these births, 883 (4.8%) were to individuals who tested positive for SARS‐CoV‐2 during pregnancy. Among the children exposed to SARS‐CoV‐2 in the womb, 26 (3%) received a neurodevelopmental diagnosis, including disorders of motor function, speech and language, and psychological development, by age 1 year. In the group unexposed to the virus, 1.8% received such a diagnosis.

After adjusting for factors such as race, insurance, maternal age, and preterm birth, Dr. Edlow’s group found that a positive test for SARS-CoV-2 during pregnancy was  associated with an increased risk for neurodevelopmental diagnoses at 12 months among boys (adjusted odds ratio, 1.94; 95% confidence interval, 1.12-3.17; P = .01), but not among girls.

In a subset of children with data available at 18 months, the correlation among boys at that age was less pronounced and not statistically significant (aOR, 1.42; 95% CI, 0.92-2.11; P = .10).  

The findings were published online in JAMA Network Open

Prior epidemiological research has suggested that maternal infection during pregnancy is associated with heightened risk for a range of neurodevelopmental disorders, including autism and schizophrenia, in offspring, the authors wrote.

“The neurodevelopmental risk associated with maternal SARS-CoV-2 infection was disproportionately high in male infants, consistent with the known increased vulnerability of males in the face of prenatal adverse exposures,” Dr. Edlow said in a news release about the findings.

Larger studies and longer follow‐up are needed to confirm and reliably estimate the risk, the researchers said.

“It is not clear that the changes we can detect at 12 and 18 months will be indicative of persistent risks for disorders such as autism spectrum disorder, intellectual disability, or schizophrenia,” they write.

New data published online by the Centers for Disease Control and Prevention show that in 11 communities in 2020, 1 in 36 (2.8%) 8-year-old children had been identified with autism spectrum disorder, an increase from 2.3% in 2018. The data also show that the early months of the pandemic may have disrupted autism detection efforts among 4-year-olds.

The investigators were supported by grants from the National Institutes of Health and the Simons Foundation Autism Research Initiative. Coauthors disclosed consulting for or receiving personal fees from biotechnology and pharmaceutical companies.

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

Doctors are more likely to miss appendicitis in patients who are Black, research shows.

This phenomenon, first described in children, occurs in adults as well, according to a study published in JAMA Surgery.

Some hospitals fare better than others: Those with more diverse patient populations were less likely to have missed the diagnosis, the researchers found.

“We don’t think the amount of melanin in your skin predicts how you present with appendicitis,” said Jonathan Carter, MD, professor of surgery at the University of California, San Francisco. “There’s no biological explanation,” Dr. Carter, who wrote an invited commentary on the research, said in an interview. “It’s really what’s going on in the social environment of those emergency rooms.”

For the study, Anne Stey, MD, assistant professor of surgery at Northwestern University in Chicago and her colleagues analyzed data from more than 80,000 men and women in four states – Florida, Maryland, New York, and Wisconsin – who underwent appendectomy in 2016-2017.

They identified those who had been seen for abdominal complaints at a hospital in the week before surgery but did not receive a diagnosis of appendicitis at that time, indicating a missed opportunity to intervene sooner.

Among Black patients, the proportion who had experienced this type of delay was 3.6%, whereas for White patients, it was 2.5%. For Hispanic patients, the share was 2.4%, while for Asian or Pacific Islander patients, the figure was 1.5%.

An analysis that controlled for patient and hospital variables found that among non-Hispanic Black patients, the rate of delayed diagnosis was 1.41 times higher than for non-Hispanic White patients (95% confidence interval, 1.21-1.63).

Other patient factors associated with delayed diagnosis included female sex, comorbidities, and living in a low-income zip code.

A key factor was where patients sought care. A delayed diagnosis of appendicitis was 3.51 times more likely for patients who went to hospitals where most patients are insured by Medicaid. Prior research has shown that “safety-net hospitals have fewer resources and may provide lower-quality care than hospitals with a larger private payer population,” Dr. Stey’s group writes.

On the other hand, going to a hospital with a more diverse patient population reduced the odds of a delayed diagnosis.

“Patients presenting to hospitals with a greater than 50% Black and Hispanic population were 0.73 (95% CI, 0.59-0.91) times less likely to have a delayed diagnosis, compared with patients presenting to hospitals with a less than 25% Black and Hispanic population,” the researchers report.

In the 30 days after discharge following appendectomy, Black patients returned to the hospital at a higher rate than White patients did (17.5% vs. 11.4%), indicating worse outcomes.

“Delayed diagnosis may account for some of the racial and ethnic disparities observed in outcomes after appendicitis,” according to the authors.

“It may be hospitals that are more used to serving racial-ethnic minority patients are better at diagnosing them, because they’re more culturally informed and have a better understanding of these patients,” Dr. Stey said in a news release about their findings.
 

Great masquerader

Diagnosing appendicitis can be challenging, Dr. Carter said. The early signs can be subtle, and the condition is sometimes called the great masquerader. It is not uncommon for patients to be diagnosed with gastroenteritis or pain associated with their menstrual period, for example, and sent home.

Scoring systems based on patients’ symptoms and liberal use of imaging have improved detection of appendicitis, but “no physician or health care system is perfect in the diagnosis,” he said.

The increased odds of delayed diagnosis for Black patients remained when the researchers focused on healthier patients who had fewer comorbidities, and it also held when they considered patients with private insurance in high-income areas, Dr. Carter noted.

“Once again, with this study we see the association of structural and systematic racism with access to health care, especially for Black patients, in emergency departments and hospitals,” he wrote. “We must redouble our efforts to become anti-racist in ourselves, our institutions, and our profession.”
 

‘Our health care system itself’

Elizabeth Garner, MD, MPH, a pharmaceutical executive who was not involved in the study, commented on Twitter that the study points to an underlying issue that has existed in medicine “for quite some time.”

“Minority populations are not taken as seriously as their white counterparts,” she wrote. “This needs to change.”

Measures of hospital quality need to be tied to health equity, according to Mofya Diallo, MD, MPH, of the department of anesthesiology at the Children’s Hospital Los Angeles and the University of Southern California, Los Angeles.

“Top hospitals should take pride in outcomes that do not vary based on race, income or literacy,” she tweeted in response to the study.

To better understand possible reasons for delayed diagnosis, future researchers could assess whether patients who are Black are less likely to receive a surgical consultation, imaging studies, or lab work, Dr. Carter told this news organization. He pointed to a recent analysis of patients insured by Medicare that found that Black patients were less likely than White patients to receive a surgical consultation after they were admitted with colorectal, general abdominal, hepatopancreatobiliary, intestinal obstruction, or upper gastrointestinal diagnoses.

While social determinants of health, such as income, education, housing, early childhood development, employment, and social inclusion, may account for a substantial portion of health outcomes, “Our health care system itself can be viewed as another social determinant of health,” Dr. Carter wrote. “Insurance coverage, health care professional availability, health care professional linguistic and cultural competency, and quality of care all have an effect on health outcomes.”

Dr. Stey was supported by grants from the American College of Surgeons and the National Institutes of Health.

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

Doctors are more likely to miss appendicitis in patients who are Black, research shows.

This phenomenon, first described in children, occurs in adults as well, according to a study published in JAMA Surgery.

Some hospitals fare better than others: Those with more diverse patient populations were less likely to have missed the diagnosis, the researchers found.

“We don’t think the amount of melanin in your skin predicts how you present with appendicitis,” said Jonathan Carter, MD, professor of surgery at the University of California, San Francisco. “There’s no biological explanation,” Dr. Carter, who wrote an invited commentary on the research, said in an interview. “It’s really what’s going on in the social environment of those emergency rooms.”

For the study, Anne Stey, MD, assistant professor of surgery at Northwestern University in Chicago and her colleagues analyzed data from more than 80,000 men and women in four states – Florida, Maryland, New York, and Wisconsin – who underwent appendectomy in 2016-2017.

They identified those who had been seen for abdominal complaints at a hospital in the week before surgery but did not receive a diagnosis of appendicitis at that time, indicating a missed opportunity to intervene sooner.

Among Black patients, the proportion who had experienced this type of delay was 3.6%, whereas for White patients, it was 2.5%. For Hispanic patients, the share was 2.4%, while for Asian or Pacific Islander patients, the figure was 1.5%.

An analysis that controlled for patient and hospital variables found that among non-Hispanic Black patients, the rate of delayed diagnosis was 1.41 times higher than for non-Hispanic White patients (95% confidence interval, 1.21-1.63).

Other patient factors associated with delayed diagnosis included female sex, comorbidities, and living in a low-income zip code.

A key factor was where patients sought care. A delayed diagnosis of appendicitis was 3.51 times more likely for patients who went to hospitals where most patients are insured by Medicaid. Prior research has shown that “safety-net hospitals have fewer resources and may provide lower-quality care than hospitals with a larger private payer population,” Dr. Stey’s group writes.

On the other hand, going to a hospital with a more diverse patient population reduced the odds of a delayed diagnosis.

“Patients presenting to hospitals with a greater than 50% Black and Hispanic population were 0.73 (95% CI, 0.59-0.91) times less likely to have a delayed diagnosis, compared with patients presenting to hospitals with a less than 25% Black and Hispanic population,” the researchers report.

In the 30 days after discharge following appendectomy, Black patients returned to the hospital at a higher rate than White patients did (17.5% vs. 11.4%), indicating worse outcomes.

“Delayed diagnosis may account for some of the racial and ethnic disparities observed in outcomes after appendicitis,” according to the authors.

“It may be hospitals that are more used to serving racial-ethnic minority patients are better at diagnosing them, because they’re more culturally informed and have a better understanding of these patients,” Dr. Stey said in a news release about their findings.
 

Great masquerader

Diagnosing appendicitis can be challenging, Dr. Carter said. The early signs can be subtle, and the condition is sometimes called the great masquerader. It is not uncommon for patients to be diagnosed with gastroenteritis or pain associated with their menstrual period, for example, and sent home.

Scoring systems based on patients’ symptoms and liberal use of imaging have improved detection of appendicitis, but “no physician or health care system is perfect in the diagnosis,” he said.

The increased odds of delayed diagnosis for Black patients remained when the researchers focused on healthier patients who had fewer comorbidities, and it also held when they considered patients with private insurance in high-income areas, Dr. Carter noted.

“Once again, with this study we see the association of structural and systematic racism with access to health care, especially for Black patients, in emergency departments and hospitals,” he wrote. “We must redouble our efforts to become anti-racist in ourselves, our institutions, and our profession.”
 

‘Our health care system itself’

Elizabeth Garner, MD, MPH, a pharmaceutical executive who was not involved in the study, commented on Twitter that the study points to an underlying issue that has existed in medicine “for quite some time.”

“Minority populations are not taken as seriously as their white counterparts,” she wrote. “This needs to change.”

Measures of hospital quality need to be tied to health equity, according to Mofya Diallo, MD, MPH, of the department of anesthesiology at the Children’s Hospital Los Angeles and the University of Southern California, Los Angeles.

“Top hospitals should take pride in outcomes that do not vary based on race, income or literacy,” she tweeted in response to the study.

To better understand possible reasons for delayed diagnosis, future researchers could assess whether patients who are Black are less likely to receive a surgical consultation, imaging studies, or lab work, Dr. Carter told this news organization. He pointed to a recent analysis of patients insured by Medicare that found that Black patients were less likely than White patients to receive a surgical consultation after they were admitted with colorectal, general abdominal, hepatopancreatobiliary, intestinal obstruction, or upper gastrointestinal diagnoses.

While social determinants of health, such as income, education, housing, early childhood development, employment, and social inclusion, may account for a substantial portion of health outcomes, “Our health care system itself can be viewed as another social determinant of health,” Dr. Carter wrote. “Insurance coverage, health care professional availability, health care professional linguistic and cultural competency, and quality of care all have an effect on health outcomes.”

Dr. Stey was supported by grants from the American College of Surgeons and the National Institutes of Health.

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

Doctors are more likely to miss appendicitis in patients who are Black, research shows.

This phenomenon, first described in children, occurs in adults as well, according to a study published in JAMA Surgery.

Some hospitals fare better than others: Those with more diverse patient populations were less likely to have missed the diagnosis, the researchers found.

“We don’t think the amount of melanin in your skin predicts how you present with appendicitis,” said Jonathan Carter, MD, professor of surgery at the University of California, San Francisco. “There’s no biological explanation,” Dr. Carter, who wrote an invited commentary on the research, said in an interview. “It’s really what’s going on in the social environment of those emergency rooms.”

For the study, Anne Stey, MD, assistant professor of surgery at Northwestern University in Chicago and her colleagues analyzed data from more than 80,000 men and women in four states – Florida, Maryland, New York, and Wisconsin – who underwent appendectomy in 2016-2017.

They identified those who had been seen for abdominal complaints at a hospital in the week before surgery but did not receive a diagnosis of appendicitis at that time, indicating a missed opportunity to intervene sooner.

Among Black patients, the proportion who had experienced this type of delay was 3.6%, whereas for White patients, it was 2.5%. For Hispanic patients, the share was 2.4%, while for Asian or Pacific Islander patients, the figure was 1.5%.

An analysis that controlled for patient and hospital variables found that among non-Hispanic Black patients, the rate of delayed diagnosis was 1.41 times higher than for non-Hispanic White patients (95% confidence interval, 1.21-1.63).

Other patient factors associated with delayed diagnosis included female sex, comorbidities, and living in a low-income zip code.

A key factor was where patients sought care. A delayed diagnosis of appendicitis was 3.51 times more likely for patients who went to hospitals where most patients are insured by Medicaid. Prior research has shown that “safety-net hospitals have fewer resources and may provide lower-quality care than hospitals with a larger private payer population,” Dr. Stey’s group writes.

On the other hand, going to a hospital with a more diverse patient population reduced the odds of a delayed diagnosis.

“Patients presenting to hospitals with a greater than 50% Black and Hispanic population were 0.73 (95% CI, 0.59-0.91) times less likely to have a delayed diagnosis, compared with patients presenting to hospitals with a less than 25% Black and Hispanic population,” the researchers report.

In the 30 days after discharge following appendectomy, Black patients returned to the hospital at a higher rate than White patients did (17.5% vs. 11.4%), indicating worse outcomes.

“Delayed diagnosis may account for some of the racial and ethnic disparities observed in outcomes after appendicitis,” according to the authors.

“It may be hospitals that are more used to serving racial-ethnic minority patients are better at diagnosing them, because they’re more culturally informed and have a better understanding of these patients,” Dr. Stey said in a news release about their findings.
 

Great masquerader

Diagnosing appendicitis can be challenging, Dr. Carter said. The early signs can be subtle, and the condition is sometimes called the great masquerader. It is not uncommon for patients to be diagnosed with gastroenteritis or pain associated with their menstrual period, for example, and sent home.

Scoring systems based on patients’ symptoms and liberal use of imaging have improved detection of appendicitis, but “no physician or health care system is perfect in the diagnosis,” he said.

The increased odds of delayed diagnosis for Black patients remained when the researchers focused on healthier patients who had fewer comorbidities, and it also held when they considered patients with private insurance in high-income areas, Dr. Carter noted.

“Once again, with this study we see the association of structural and systematic racism with access to health care, especially for Black patients, in emergency departments and hospitals,” he wrote. “We must redouble our efforts to become anti-racist in ourselves, our institutions, and our profession.”
 

‘Our health care system itself’

Elizabeth Garner, MD, MPH, a pharmaceutical executive who was not involved in the study, commented on Twitter that the study points to an underlying issue that has existed in medicine “for quite some time.”

“Minority populations are not taken as seriously as their white counterparts,” she wrote. “This needs to change.”

Measures of hospital quality need to be tied to health equity, according to Mofya Diallo, MD, MPH, of the department of anesthesiology at the Children’s Hospital Los Angeles and the University of Southern California, Los Angeles.

“Top hospitals should take pride in outcomes that do not vary based on race, income or literacy,” she tweeted in response to the study.

To better understand possible reasons for delayed diagnosis, future researchers could assess whether patients who are Black are less likely to receive a surgical consultation, imaging studies, or lab work, Dr. Carter told this news organization. He pointed to a recent analysis of patients insured by Medicare that found that Black patients were less likely than White patients to receive a surgical consultation after they were admitted with colorectal, general abdominal, hepatopancreatobiliary, intestinal obstruction, or upper gastrointestinal diagnoses.

While social determinants of health, such as income, education, housing, early childhood development, employment, and social inclusion, may account for a substantial portion of health outcomes, “Our health care system itself can be viewed as another social determinant of health,” Dr. Carter wrote. “Insurance coverage, health care professional availability, health care professional linguistic and cultural competency, and quality of care all have an effect on health outcomes.”

Dr. Stey was supported by grants from the American College of Surgeons and the National Institutes of Health.

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

Exercise helps patients with knee osteoarthritis, but more isn’t necessarily better, new research shows.

A low-dose exercise regimen helped patients with knee OA about as much as a more intense workout plan, according to trial results published online in Annals of Internal Medicine.

kali9/Getty Images

Both high and low doses of exercise reduced pain and improved function and quality of life.

The improvements with the lower-dose plan and its 98% adherence rate are encouraging, said Nick Trasolini, MD, assistant professor of orthopedic surgery at Atrium Health Wake Forest Baptist Medical Center, Winston-Salem, N.C.

“This is a very doable amount of medical exercise therapy for patients with knee osteoarthritis, and one that makes a big difference in patient-reported symptoms,” Dr. Trasolini, who was not involved in the study, said in an interview.
 

What’s the right dose?

Exercise is a go-to treatment for knee OA, but the precise dose to recommend has been unclear. To study this question, Tom Arild Torstensen, MSc, RPT, with Karolinska Institutet, Huddinge, Sweden, and Holten Institute, Stockholm, and colleagues conducted a trial at four centers in Sweden and Norway.

The study included 189 men and women with knee OA. Participants were randomly assigned to low- or high-dose exercise plans, which they performed three times per week for 12 weeks under the supervision of a physiotherapist.

Participants in the high-dose group performed 11 exercises during each session, which lasted 70-90 minutes.

The low-dose regimen consisted of five exercises – cycling, squats, step-ups, step-downs, and knee extensions – performed for 20–30 minutes.

The researchers measured outcomes using the Knee Injury and Osteoarthritis Outcome Score, which assesses pain, other symptoms, function in daily living, function in sports and recreation, and knee-related quality of life.

“Patients in both groups improved significantly over time, but high-dose exercise was not superior to low-dose exercise in most comparisons,” the study investigators reported

High-dose exercise was associated with better function in sports and recreational activity and knee-related quality of life at 6 months. Those differences did not persist at 1 year, however. The researchers reported no safety concerns with either intervention.

Adherence was “nearly perfect” in the low-dose group. It was slightly lower in the high-dose group, the researchers said.

“Interestingly, it seems that high-dose treatment could be preferable to low-dose treatment in the long run for people who lead active lives,” they wrote. “This should be the subject of future studies.”

All clinical practice guidelines for knee OA recommend exercise, but “we do not know the optimal dose,” Kim Bennell, PhD, a research physiotherapist at the University of Melbourne, said in an interview.

Dose has components, including number of times per week, number of exercises, sets and repetitions, intensity, and duration of exercise sessions, Dr. Bennell said.

“These results suggest that an exercise program that involves less time and fewer exercises can still offer benefits and may be easier for patients to undertake and stick at than one that involves greater time and effort,” she said.

The study was supported by the Swedish Rheumatic Fund. Dr. Trasolini and Dr. Bennell have disclosed no relevant financial relationships.

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

Exercise helps patients with knee osteoarthritis, but more isn’t necessarily better, new research shows.

A low-dose exercise regimen helped patients with knee OA about as much as a more intense workout plan, according to trial results published online in Annals of Internal Medicine.

kali9/Getty Images

Both high and low doses of exercise reduced pain and improved function and quality of life.

The improvements with the lower-dose plan and its 98% adherence rate are encouraging, said Nick Trasolini, MD, assistant professor of orthopedic surgery at Atrium Health Wake Forest Baptist Medical Center, Winston-Salem, N.C.

“This is a very doable amount of medical exercise therapy for patients with knee osteoarthritis, and one that makes a big difference in patient-reported symptoms,” Dr. Trasolini, who was not involved in the study, said in an interview.
 

What’s the right dose?

Exercise is a go-to treatment for knee OA, but the precise dose to recommend has been unclear. To study this question, Tom Arild Torstensen, MSc, RPT, with Karolinska Institutet, Huddinge, Sweden, and Holten Institute, Stockholm, and colleagues conducted a trial at four centers in Sweden and Norway.

The study included 189 men and women with knee OA. Participants were randomly assigned to low- or high-dose exercise plans, which they performed three times per week for 12 weeks under the supervision of a physiotherapist.

Participants in the high-dose group performed 11 exercises during each session, which lasted 70-90 minutes.

The low-dose regimen consisted of five exercises – cycling, squats, step-ups, step-downs, and knee extensions – performed for 20–30 minutes.

The researchers measured outcomes using the Knee Injury and Osteoarthritis Outcome Score, which assesses pain, other symptoms, function in daily living, function in sports and recreation, and knee-related quality of life.

“Patients in both groups improved significantly over time, but high-dose exercise was not superior to low-dose exercise in most comparisons,” the study investigators reported

High-dose exercise was associated with better function in sports and recreational activity and knee-related quality of life at 6 months. Those differences did not persist at 1 year, however. The researchers reported no safety concerns with either intervention.

Adherence was “nearly perfect” in the low-dose group. It was slightly lower in the high-dose group, the researchers said.

“Interestingly, it seems that high-dose treatment could be preferable to low-dose treatment in the long run for people who lead active lives,” they wrote. “This should be the subject of future studies.”

All clinical practice guidelines for knee OA recommend exercise, but “we do not know the optimal dose,” Kim Bennell, PhD, a research physiotherapist at the University of Melbourne, said in an interview.

Dose has components, including number of times per week, number of exercises, sets and repetitions, intensity, and duration of exercise sessions, Dr. Bennell said.

“These results suggest that an exercise program that involves less time and fewer exercises can still offer benefits and may be easier for patients to undertake and stick at than one that involves greater time and effort,” she said.

The study was supported by the Swedish Rheumatic Fund. Dr. Trasolini and Dr. Bennell have disclosed no relevant financial relationships.

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

Exercise helps patients with knee osteoarthritis, but more isn’t necessarily better, new research shows.

A low-dose exercise regimen helped patients with knee OA about as much as a more intense workout plan, according to trial results published online in Annals of Internal Medicine.

kali9/Getty Images

Both high and low doses of exercise reduced pain and improved function and quality of life.

The improvements with the lower-dose plan and its 98% adherence rate are encouraging, said Nick Trasolini, MD, assistant professor of orthopedic surgery at Atrium Health Wake Forest Baptist Medical Center, Winston-Salem, N.C.

“This is a very doable amount of medical exercise therapy for patients with knee osteoarthritis, and one that makes a big difference in patient-reported symptoms,” Dr. Trasolini, who was not involved in the study, said in an interview.
 

What’s the right dose?

Exercise is a go-to treatment for knee OA, but the precise dose to recommend has been unclear. To study this question, Tom Arild Torstensen, MSc, RPT, with Karolinska Institutet, Huddinge, Sweden, and Holten Institute, Stockholm, and colleagues conducted a trial at four centers in Sweden and Norway.

The study included 189 men and women with knee OA. Participants were randomly assigned to low- or high-dose exercise plans, which they performed three times per week for 12 weeks under the supervision of a physiotherapist.

Participants in the high-dose group performed 11 exercises during each session, which lasted 70-90 minutes.

The low-dose regimen consisted of five exercises – cycling, squats, step-ups, step-downs, and knee extensions – performed for 20–30 minutes.

The researchers measured outcomes using the Knee Injury and Osteoarthritis Outcome Score, which assesses pain, other symptoms, function in daily living, function in sports and recreation, and knee-related quality of life.

“Patients in both groups improved significantly over time, but high-dose exercise was not superior to low-dose exercise in most comparisons,” the study investigators reported

High-dose exercise was associated with better function in sports and recreational activity and knee-related quality of life at 6 months. Those differences did not persist at 1 year, however. The researchers reported no safety concerns with either intervention.

Adherence was “nearly perfect” in the low-dose group. It was slightly lower in the high-dose group, the researchers said.

“Interestingly, it seems that high-dose treatment could be preferable to low-dose treatment in the long run for people who lead active lives,” they wrote. “This should be the subject of future studies.”

All clinical practice guidelines for knee OA recommend exercise, but “we do not know the optimal dose,” Kim Bennell, PhD, a research physiotherapist at the University of Melbourne, said in an interview.

Dose has components, including number of times per week, number of exercises, sets and repetitions, intensity, and duration of exercise sessions, Dr. Bennell said.

“These results suggest that an exercise program that involves less time and fewer exercises can still offer benefits and may be easier for patients to undertake and stick at than one that involves greater time and effort,” she said.

The study was supported by the Swedish Rheumatic Fund. Dr. Trasolini and Dr. Bennell have disclosed no relevant financial relationships.

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

The percentage of kindergarteners in the United States who have received routine vaccines to protect against illnesses such as measles, whooping cough, and polio has declined for 2 straight years, a new study has found.

Drops in vaccine coverage leave communities more susceptible to outbreaks of vaccine-preventable diseases, such as those that occurred in 2022, public health officials said.

Coverage for four vaccines – against measles, mumps, and rubella (MMR); diphtheria, tetanus, and acellular pertussis (DTaP); poliovirus; and varicella – among kindergarten students was about 95% in 2019-2020.

The rate fell to 94% the following year.

For the 2021-2022 school year, coverage dropped another point, to 93%, according to the report, published online in Morbidity and Mortality Weekly Report.

The rate of vaccination overall remains high, but about 250,000 kindergarten students may not be protected against measles, the researchers estimate. Measles, which is highly infectious, can lead to serious illness and even death in children who have not been vaccinated against the virus.

“In 2022, two communities in the United States responded to outbreaks of measles where children have been hospitalized,” Georgina Peacock, MD, MPH, director of the immunization services division of the Centers for Disease Control and Prevention, said in a media briefing about the report. “One community reported a case of paralytic polio in an unvaccinated person. These outbreaks were preventable. The best way to prevent these diseases and their devastating impact on children is through vaccination.”
 

Exemptions steady

For the new study, Ranee Seither, MPH, with the CDC’s National Center for Immunization and Respiratory Diseases and her colleagues analyzed data reported by states to estimate nationwide coverage for the four routine vaccines.

The number of students with exemptions remained low, at 2.6%, but another 3.9% who were without exemptions were not up to date with the MMR vaccine, the investigators report.

In a separate study, researchers found that vaccination coverage for 2-year-olds has increased. Approximately 70% of children were up to date with a seven-vaccine series by age 24 months. The coverage rate was higher for children born during 2018-2019 than for those born during 2016-2017.

Although the COVID-19 pandemic was not associated with decreased vaccination rates in this younger age group overall, coverage fell by 4-5 percentage points for children living below the poverty level or in rural areas, according to the study.

In addition, uninsured children were eight times more likely than those with private insurance to not be vaccinated by their second birthday, the researchers found.

Strategies to increase vaccination coverage include enforcing school vaccination requirements and holding vaccination clinics at schools, the CDC said.

“Providers should review children’s histories and recommend needed vaccinations during every clinical encounter and address parental hesitancy to help reduce disparities and ensure that all children are protected from vaccine-preventable diseases,” the agency said.

To that end, the agency launched an initiative this week called Let’s RISE (Routine Immunizations on Schedule for Everyone) to provide clinicians with resources to help patients get on track with their immunizations.
 

Hundreds of thousands unprotected

MMR vaccination coverage for kindergartners is the lowest it has been in over a decade, Dr. Peacock noted. Decreased coverage for kindergarten students might be tied to pandemic-related disruptions in health care systems and schools, she said. School administrators and parents may have been less focused on routine vaccination paperwork amid the return to in-person learning, for instance.

Hesitancy about COVID vaccines could be affecting routine vaccinations. “That’s something that we are watching very closely,” Dr. Peacock said.

The 2-point decrease in vaccination coverage “translates to hundreds of thousands of children starting school without being fully protected” against preventable diseases that can spread easily in classrooms, Sean O’Leary, MD, chair of the American Academy of Pediatrics’ Committee on Infectious Diseases, said.

Despite the drop in coverage, Dr. O’Leary said he saw some encouraging signs in the data: Nonmedical exemptions for kindergarten students have not increased. And the vast majority of parents are still having their children vaccinated. At the same time, the reports highlight a need to address child poverty and improve vaccine access in rural areas, he said.

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

The percentage of kindergarteners in the United States who have received routine vaccines to protect against illnesses such as measles, whooping cough, and polio has declined for 2 straight years, a new study has found.

Drops in vaccine coverage leave communities more susceptible to outbreaks of vaccine-preventable diseases, such as those that occurred in 2022, public health officials said.

Coverage for four vaccines – against measles, mumps, and rubella (MMR); diphtheria, tetanus, and acellular pertussis (DTaP); poliovirus; and varicella – among kindergarten students was about 95% in 2019-2020.

The rate fell to 94% the following year.

For the 2021-2022 school year, coverage dropped another point, to 93%, according to the report, published online in Morbidity and Mortality Weekly Report.

The rate of vaccination overall remains high, but about 250,000 kindergarten students may not be protected against measles, the researchers estimate. Measles, which is highly infectious, can lead to serious illness and even death in children who have not been vaccinated against the virus.

“In 2022, two communities in the United States responded to outbreaks of measles where children have been hospitalized,” Georgina Peacock, MD, MPH, director of the immunization services division of the Centers for Disease Control and Prevention, said in a media briefing about the report. “One community reported a case of paralytic polio in an unvaccinated person. These outbreaks were preventable. The best way to prevent these diseases and their devastating impact on children is through vaccination.”
 

Exemptions steady

For the new study, Ranee Seither, MPH, with the CDC’s National Center for Immunization and Respiratory Diseases and her colleagues analyzed data reported by states to estimate nationwide coverage for the four routine vaccines.

The number of students with exemptions remained low, at 2.6%, but another 3.9% who were without exemptions were not up to date with the MMR vaccine, the investigators report.

In a separate study, researchers found that vaccination coverage for 2-year-olds has increased. Approximately 70% of children were up to date with a seven-vaccine series by age 24 months. The coverage rate was higher for children born during 2018-2019 than for those born during 2016-2017.

Although the COVID-19 pandemic was not associated with decreased vaccination rates in this younger age group overall, coverage fell by 4-5 percentage points for children living below the poverty level or in rural areas, according to the study.

In addition, uninsured children were eight times more likely than those with private insurance to not be vaccinated by their second birthday, the researchers found.

Strategies to increase vaccination coverage include enforcing school vaccination requirements and holding vaccination clinics at schools, the CDC said.

“Providers should review children’s histories and recommend needed vaccinations during every clinical encounter and address parental hesitancy to help reduce disparities and ensure that all children are protected from vaccine-preventable diseases,” the agency said.

To that end, the agency launched an initiative this week called Let’s RISE (Routine Immunizations on Schedule for Everyone) to provide clinicians with resources to help patients get on track with their immunizations.
 

Hundreds of thousands unprotected

MMR vaccination coverage for kindergartners is the lowest it has been in over a decade, Dr. Peacock noted. Decreased coverage for kindergarten students might be tied to pandemic-related disruptions in health care systems and schools, she said. School administrators and parents may have been less focused on routine vaccination paperwork amid the return to in-person learning, for instance.

Hesitancy about COVID vaccines could be affecting routine vaccinations. “That’s something that we are watching very closely,” Dr. Peacock said.

The 2-point decrease in vaccination coverage “translates to hundreds of thousands of children starting school without being fully protected” against preventable diseases that can spread easily in classrooms, Sean O’Leary, MD, chair of the American Academy of Pediatrics’ Committee on Infectious Diseases, said.

Despite the drop in coverage, Dr. O’Leary said he saw some encouraging signs in the data: Nonmedical exemptions for kindergarten students have not increased. And the vast majority of parents are still having their children vaccinated. At the same time, the reports highlight a need to address child poverty and improve vaccine access in rural areas, he said.

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

The percentage of kindergarteners in the United States who have received routine vaccines to protect against illnesses such as measles, whooping cough, and polio has declined for 2 straight years, a new study has found.

Drops in vaccine coverage leave communities more susceptible to outbreaks of vaccine-preventable diseases, such as those that occurred in 2022, public health officials said.

Coverage for four vaccines – against measles, mumps, and rubella (MMR); diphtheria, tetanus, and acellular pertussis (DTaP); poliovirus; and varicella – among kindergarten students was about 95% in 2019-2020.

The rate fell to 94% the following year.

For the 2021-2022 school year, coverage dropped another point, to 93%, according to the report, published online in Morbidity and Mortality Weekly Report.

The rate of vaccination overall remains high, but about 250,000 kindergarten students may not be protected against measles, the researchers estimate. Measles, which is highly infectious, can lead to serious illness and even death in children who have not been vaccinated against the virus.

“In 2022, two communities in the United States responded to outbreaks of measles where children have been hospitalized,” Georgina Peacock, MD, MPH, director of the immunization services division of the Centers for Disease Control and Prevention, said in a media briefing about the report. “One community reported a case of paralytic polio in an unvaccinated person. These outbreaks were preventable. The best way to prevent these diseases and their devastating impact on children is through vaccination.”
 

Exemptions steady

For the new study, Ranee Seither, MPH, with the CDC’s National Center for Immunization and Respiratory Diseases and her colleagues analyzed data reported by states to estimate nationwide coverage for the four routine vaccines.

The number of students with exemptions remained low, at 2.6%, but another 3.9% who were without exemptions were not up to date with the MMR vaccine, the investigators report.

In a separate study, researchers found that vaccination coverage for 2-year-olds has increased. Approximately 70% of children were up to date with a seven-vaccine series by age 24 months. The coverage rate was higher for children born during 2018-2019 than for those born during 2016-2017.

Although the COVID-19 pandemic was not associated with decreased vaccination rates in this younger age group overall, coverage fell by 4-5 percentage points for children living below the poverty level or in rural areas, according to the study.

In addition, uninsured children were eight times more likely than those with private insurance to not be vaccinated by their second birthday, the researchers found.

Strategies to increase vaccination coverage include enforcing school vaccination requirements and holding vaccination clinics at schools, the CDC said.

“Providers should review children’s histories and recommend needed vaccinations during every clinical encounter and address parental hesitancy to help reduce disparities and ensure that all children are protected from vaccine-preventable diseases,” the agency said.

To that end, the agency launched an initiative this week called Let’s RISE (Routine Immunizations on Schedule for Everyone) to provide clinicians with resources to help patients get on track with their immunizations.
 

Hundreds of thousands unprotected

MMR vaccination coverage for kindergartners is the lowest it has been in over a decade, Dr. Peacock noted. Decreased coverage for kindergarten students might be tied to pandemic-related disruptions in health care systems and schools, she said. School administrators and parents may have been less focused on routine vaccination paperwork amid the return to in-person learning, for instance.

Hesitancy about COVID vaccines could be affecting routine vaccinations. “That’s something that we are watching very closely,” Dr. Peacock said.

The 2-point decrease in vaccination coverage “translates to hundreds of thousands of children starting school without being fully protected” against preventable diseases that can spread easily in classrooms, Sean O’Leary, MD, chair of the American Academy of Pediatrics’ Committee on Infectious Diseases, said.

Despite the drop in coverage, Dr. O’Leary said he saw some encouraging signs in the data: Nonmedical exemptions for kindergarten students have not increased. And the vast majority of parents are still having their children vaccinated. At the same time, the reports highlight a need to address child poverty and improve vaccine access in rural areas, he said.

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

The Food and Drug Administration has approved another Tdap vaccine option for use during pregnancy to protect newborns from whooping cough.

The agency on Jan. 9 licensed Adacel (Sanofi Pasteur) for immunization during the third trimester to prevent pertussis in infants younger than 2 months old.

The FDA in October approved a different Tdap vaccine, Boostrix (GlaxoSmithKline), for this indication. Boostrix was the first vaccine specifically approved to prevent a disease in newborns whose mothers receive the vaccine while pregnant.

The Centers for Disease Control and Prevention recommend that women receive a dose of Tdap vaccine during each pregnancy, preferably during gestational weeks 27-36 – and ideally toward the earlier end of that window – to help protect babies from whooping cough, the respiratory tract infection caused by Bordetella pertussis.

Providing a Tdap vaccine – tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine, adsorbed – in the third trimester confers passive immunity to the baby, according to the CDC. It also reduces the likelihood that the mother will get pertussis and pass it on to the infant.

One study found that providing Tdap vaccination during gestational weeks 27-36 was 85% more effective at preventing pertussis in infants younger than 2 months old, compared with providing Tdap vaccination to mothers in the hospital postpartum.

“On average, about 1,000 infants are hospitalized and typically between 5 and 15 infants die each year in the United States due to pertussis,” according to a CDC reference page. “Most of these deaths are among infants who are too young to be protected by the childhood pertussis vaccine series that starts when infants are 2 months old.”

The Food and Drug Administration has approved another Tdap vaccine option for use during pregnancy to protect newborns from whooping cough.

The agency on Jan. 9 licensed Adacel (Sanofi Pasteur) for immunization during the third trimester to prevent pertussis in infants younger than 2 months old.

The FDA in October approved a different Tdap vaccine, Boostrix (GlaxoSmithKline), for this indication. Boostrix was the first vaccine specifically approved to prevent a disease in newborns whose mothers receive the vaccine while pregnant.

The Centers for Disease Control and Prevention recommend that women receive a dose of Tdap vaccine during each pregnancy, preferably during gestational weeks 27-36 – and ideally toward the earlier end of that window – to help protect babies from whooping cough, the respiratory tract infection caused by Bordetella pertussis.

Providing a Tdap vaccine – tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine, adsorbed – in the third trimester confers passive immunity to the baby, according to the CDC. It also reduces the likelihood that the mother will get pertussis and pass it on to the infant.

One study found that providing Tdap vaccination during gestational weeks 27-36 was 85% more effective at preventing pertussis in infants younger than 2 months old, compared with providing Tdap vaccination to mothers in the hospital postpartum.

“On average, about 1,000 infants are hospitalized and typically between 5 and 15 infants die each year in the United States due to pertussis,” according to a CDC reference page. “Most of these deaths are among infants who are too young to be protected by the childhood pertussis vaccine series that starts when infants are 2 months old.”

The Food and Drug Administration has approved another Tdap vaccine option for use during pregnancy to protect newborns from whooping cough.

The agency on Jan. 9 licensed Adacel (Sanofi Pasteur) for immunization during the third trimester to prevent pertussis in infants younger than 2 months old.

The FDA in October approved a different Tdap vaccine, Boostrix (GlaxoSmithKline), for this indication. Boostrix was the first vaccine specifically approved to prevent a disease in newborns whose mothers receive the vaccine while pregnant.

The Centers for Disease Control and Prevention recommend that women receive a dose of Tdap vaccine during each pregnancy, preferably during gestational weeks 27-36 – and ideally toward the earlier end of that window – to help protect babies from whooping cough, the respiratory tract infection caused by Bordetella pertussis.

Providing a Tdap vaccine – tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine, adsorbed – in the third trimester confers passive immunity to the baby, according to the CDC. It also reduces the likelihood that the mother will get pertussis and pass it on to the infant.

One study found that providing Tdap vaccination during gestational weeks 27-36 was 85% more effective at preventing pertussis in infants younger than 2 months old, compared with providing Tdap vaccination to mothers in the hospital postpartum.

“On average, about 1,000 infants are hospitalized and typically between 5 and 15 infants die each year in the United States due to pertussis,” according to a CDC reference page. “Most of these deaths are among infants who are too young to be protected by the childhood pertussis vaccine series that starts when infants are 2 months old.”

If you smoke, vape, or ingest cannabis, your anesthesiologist should know before you undergo a surgical procedure, according to new medical guidelines.

All patients who undergo procedures that require regional or general anesthesia should be asked if, how often, and in what forms they use the drug, according to recommendations from the American Society of Regional Anesthesia and Pain Medicine.

One reason: Patients who regularly use cannabis may experience worse pain and nausea after surgery and may require more opioid analgesia, the group said.

The society’s recommendations – published in Regional Anesthesia and Pain Medicine – are the first guidelines in the United States to cover cannabis use as it relates to surgery, the group said.
 

Possible interactions

Use of cannabis has increased in recent years, and researchers have been concerned that the drug may interact with anesthesia and complicate pain management. Few studies have evaluated interactions between cannabis and anesthetic agents, however, according to the authors of the new guidelines.

“With the rising prevalence of both medical and recreational cannabis use in the general population, anesthesiologists, surgeons, and perioperative physicians must have an understanding of the effects of cannabis on physiology in order to provide safe perioperative care,” the guideline said.

“Before surgery, anesthesiologists should ask patients if they use cannabis – whether medicinally or recreationally – and be prepared to possibly change the anesthesia plan or delay the procedure in certain situations,” Samer Narouze, MD, PhD, ASRA president and senior author of the guidelines, said in a news release about the recommendations.

Although some patients may use cannabis to relieve pain, research shows that “regular users may have more pain and nausea after surgery, not less, and may need more medications, including opioids, to manage the discomfort,” said Dr. Narouze, chairman of the Center for Pain Medicine at Western Reserve Hospital in Cuyahoga Falls, Ohio.
 

Risks for vomiting, heart attack

The new recommendations were created by a committee of 13 experts, including anesthesiologists, chronic pain physicians, and a patient advocate. Shalini Shah, MD, vice chair of anesthesiology at the University of California, Irvine, was lead author of the document.

Four of 21 recommendations were classified as grade A, meaning that following them would be expected to provide substantial benefits. Those recommendations are to screen all patients before surgery; postpone elective surgery for patients who have altered mental status or impaired decision-making capacity at the time of surgery; counsel frequent, heavy users about the potential for cannabis use to impair postoperative pain control; and counsel pregnant patients about the risks of cannabis use to unborn children.

The authors cited studies to support their recommendations, including one showing that long-term cannabis use was associated with a 20% increase in the incidence of postoperative nausea and vomiting, a leading complaint of surgery patients. Other research has shown that cannabis use is linked to more pain and use of opioids after surgery.

Other recommendations include delaying elective surgery for at least 2 hours after a patient has smoked cannabis, owing to an increased risk for heart attack, and considering adjustment of ventilation settings during surgery for regular smokers of cannabis. Research has shown that smoking cannabis may be a rare trigger for myocardial infarction and is associated with airway inflammation and self-reported respiratory symptoms.

Nevertheless, doctors should not conduct universal toxicology screening, given a lack of evidence supporting this practice, the guideline stated.

The authors did not have enough information to make recommendations about reducing cannabis use before surgery or adjusting opioid prescriptions after surgery for patients who use cannabis, they said.

Kenneth Finn, MD, president of the American Board of Pain Medicine, welcomed the publication of the new guidelines. Dr. Finn, who practices at Springs Rehabilitation in Colorado Springs, has edited a textbook about cannabis in medicine and founded the International Academy on the Science and Impact of Cannabis.

“The vast majority of medical providers really have no idea about cannabis and what its impacts are on the human body,” Dr. Finn said.

For one, it can interact with numerous other drugs, including warfarin.

Guideline coauthor Eugene R. Viscusi, MD, professor of anesthesiology at the Sidney Kimmel Medical College, Philadelphia, emphasized that, while cannabis may be perceived as “natural,” it should not be considered differently from manufactured drugs.

Cannabis and cannabinoids represent “a class of very potent and pharmacologically active compounds,” Dr. Viscusi said in an interview. While researchers continue to assess possible medically beneficial effects of cannabis compounds, clinicians also need to be aware of the risks.

“The literature continues to emerge, and while we are always hopeful for good news, as physicians, we need to be very well versed on potential risks, especially in a high-risk situation like surgery,” he said.

Dr. Shah has consulted for companies that develop medical devices and drugs. Dr. Finn is the editor of the textbook, “Cannabis in Medicine: An Evidence-Based Approach” (Springer: New York, 2020), for which he receives royalties.

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

If you smoke, vape, or ingest cannabis, your anesthesiologist should know before you undergo a surgical procedure, according to new medical guidelines.

All patients who undergo procedures that require regional or general anesthesia should be asked if, how often, and in what forms they use the drug, according to recommendations from the American Society of Regional Anesthesia and Pain Medicine.

One reason: Patients who regularly use cannabis may experience worse pain and nausea after surgery and may require more opioid analgesia, the group said.

The society’s recommendations – published in Regional Anesthesia and Pain Medicine – are the first guidelines in the United States to cover cannabis use as it relates to surgery, the group said.
 

Possible interactions

Use of cannabis has increased in recent years, and researchers have been concerned that the drug may interact with anesthesia and complicate pain management. Few studies have evaluated interactions between cannabis and anesthetic agents, however, according to the authors of the new guidelines.

“With the rising prevalence of both medical and recreational cannabis use in the general population, anesthesiologists, surgeons, and perioperative physicians must have an understanding of the effects of cannabis on physiology in order to provide safe perioperative care,” the guideline said.

“Before surgery, anesthesiologists should ask patients if they use cannabis – whether medicinally or recreationally – and be prepared to possibly change the anesthesia plan or delay the procedure in certain situations,” Samer Narouze, MD, PhD, ASRA president and senior author of the guidelines, said in a news release about the recommendations.

Although some patients may use cannabis to relieve pain, research shows that “regular users may have more pain and nausea after surgery, not less, and may need more medications, including opioids, to manage the discomfort,” said Dr. Narouze, chairman of the Center for Pain Medicine at Western Reserve Hospital in Cuyahoga Falls, Ohio.
 

Risks for vomiting, heart attack

The new recommendations were created by a committee of 13 experts, including anesthesiologists, chronic pain physicians, and a patient advocate. Shalini Shah, MD, vice chair of anesthesiology at the University of California, Irvine, was lead author of the document.

Four of 21 recommendations were classified as grade A, meaning that following them would be expected to provide substantial benefits. Those recommendations are to screen all patients before surgery; postpone elective surgery for patients who have altered mental status or impaired decision-making capacity at the time of surgery; counsel frequent, heavy users about the potential for cannabis use to impair postoperative pain control; and counsel pregnant patients about the risks of cannabis use to unborn children.

The authors cited studies to support their recommendations, including one showing that long-term cannabis use was associated with a 20% increase in the incidence of postoperative nausea and vomiting, a leading complaint of surgery patients. Other research has shown that cannabis use is linked to more pain and use of opioids after surgery.

Other recommendations include delaying elective surgery for at least 2 hours after a patient has smoked cannabis, owing to an increased risk for heart attack, and considering adjustment of ventilation settings during surgery for regular smokers of cannabis. Research has shown that smoking cannabis may be a rare trigger for myocardial infarction and is associated with airway inflammation and self-reported respiratory symptoms.

Nevertheless, doctors should not conduct universal toxicology screening, given a lack of evidence supporting this practice, the guideline stated.

The authors did not have enough information to make recommendations about reducing cannabis use before surgery or adjusting opioid prescriptions after surgery for patients who use cannabis, they said.

Kenneth Finn, MD, president of the American Board of Pain Medicine, welcomed the publication of the new guidelines. Dr. Finn, who practices at Springs Rehabilitation in Colorado Springs, has edited a textbook about cannabis in medicine and founded the International Academy on the Science and Impact of Cannabis.

“The vast majority of medical providers really have no idea about cannabis and what its impacts are on the human body,” Dr. Finn said.

For one, it can interact with numerous other drugs, including warfarin.

Guideline coauthor Eugene R. Viscusi, MD, professor of anesthesiology at the Sidney Kimmel Medical College, Philadelphia, emphasized that, while cannabis may be perceived as “natural,” it should not be considered differently from manufactured drugs.

Cannabis and cannabinoids represent “a class of very potent and pharmacologically active compounds,” Dr. Viscusi said in an interview. While researchers continue to assess possible medically beneficial effects of cannabis compounds, clinicians also need to be aware of the risks.

“The literature continues to emerge, and while we are always hopeful for good news, as physicians, we need to be very well versed on potential risks, especially in a high-risk situation like surgery,” he said.

Dr. Shah has consulted for companies that develop medical devices and drugs. Dr. Finn is the editor of the textbook, “Cannabis in Medicine: An Evidence-Based Approach” (Springer: New York, 2020), for which he receives royalties.

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

If you smoke, vape, or ingest cannabis, your anesthesiologist should know before you undergo a surgical procedure, according to new medical guidelines.

All patients who undergo procedures that require regional or general anesthesia should be asked if, how often, and in what forms they use the drug, according to recommendations from the American Society of Regional Anesthesia and Pain Medicine.

One reason: Patients who regularly use cannabis may experience worse pain and nausea after surgery and may require more opioid analgesia, the group said.

The society’s recommendations – published in Regional Anesthesia and Pain Medicine – are the first guidelines in the United States to cover cannabis use as it relates to surgery, the group said.
 

Possible interactions

Use of cannabis has increased in recent years, and researchers have been concerned that the drug may interact with anesthesia and complicate pain management. Few studies have evaluated interactions between cannabis and anesthetic agents, however, according to the authors of the new guidelines.

“With the rising prevalence of both medical and recreational cannabis use in the general population, anesthesiologists, surgeons, and perioperative physicians must have an understanding of the effects of cannabis on physiology in order to provide safe perioperative care,” the guideline said.

“Before surgery, anesthesiologists should ask patients if they use cannabis – whether medicinally or recreationally – and be prepared to possibly change the anesthesia plan or delay the procedure in certain situations,” Samer Narouze, MD, PhD, ASRA president and senior author of the guidelines, said in a news release about the recommendations.

Although some patients may use cannabis to relieve pain, research shows that “regular users may have more pain and nausea after surgery, not less, and may need more medications, including opioids, to manage the discomfort,” said Dr. Narouze, chairman of the Center for Pain Medicine at Western Reserve Hospital in Cuyahoga Falls, Ohio.
 

Risks for vomiting, heart attack

The new recommendations were created by a committee of 13 experts, including anesthesiologists, chronic pain physicians, and a patient advocate. Shalini Shah, MD, vice chair of anesthesiology at the University of California, Irvine, was lead author of the document.

Four of 21 recommendations were classified as grade A, meaning that following them would be expected to provide substantial benefits. Those recommendations are to screen all patients before surgery; postpone elective surgery for patients who have altered mental status or impaired decision-making capacity at the time of surgery; counsel frequent, heavy users about the potential for cannabis use to impair postoperative pain control; and counsel pregnant patients about the risks of cannabis use to unborn children.

The authors cited studies to support their recommendations, including one showing that long-term cannabis use was associated with a 20% increase in the incidence of postoperative nausea and vomiting, a leading complaint of surgery patients. Other research has shown that cannabis use is linked to more pain and use of opioids after surgery.

Other recommendations include delaying elective surgery for at least 2 hours after a patient has smoked cannabis, owing to an increased risk for heart attack, and considering adjustment of ventilation settings during surgery for regular smokers of cannabis. Research has shown that smoking cannabis may be a rare trigger for myocardial infarction and is associated with airway inflammation and self-reported respiratory symptoms.

Nevertheless, doctors should not conduct universal toxicology screening, given a lack of evidence supporting this practice, the guideline stated.

The authors did not have enough information to make recommendations about reducing cannabis use before surgery or adjusting opioid prescriptions after surgery for patients who use cannabis, they said.

Kenneth Finn, MD, president of the American Board of Pain Medicine, welcomed the publication of the new guidelines. Dr. Finn, who practices at Springs Rehabilitation in Colorado Springs, has edited a textbook about cannabis in medicine and founded the International Academy on the Science and Impact of Cannabis.

“The vast majority of medical providers really have no idea about cannabis and what its impacts are on the human body,” Dr. Finn said.

For one, it can interact with numerous other drugs, including warfarin.

Guideline coauthor Eugene R. Viscusi, MD, professor of anesthesiology at the Sidney Kimmel Medical College, Philadelphia, emphasized that, while cannabis may be perceived as “natural,” it should not be considered differently from manufactured drugs.

Cannabis and cannabinoids represent “a class of very potent and pharmacologically active compounds,” Dr. Viscusi said in an interview. While researchers continue to assess possible medically beneficial effects of cannabis compounds, clinicians also need to be aware of the risks.

“The literature continues to emerge, and while we are always hopeful for good news, as physicians, we need to be very well versed on potential risks, especially in a high-risk situation like surgery,” he said.

Dr. Shah has consulted for companies that develop medical devices and drugs. Dr. Finn is the editor of the textbook, “Cannabis in Medicine: An Evidence-Based Approach” (Springer: New York, 2020), for which he receives royalties.

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

The number of young children unintentionally exposed to edible cannabis products in the United States jumped 1,375% over a 5-year period, according to a new analysis of data from poison control centers.

In 2017, centers received 207 reports of children aged 5 years and younger who ingested edible cannabis. In 2021, 3,054 such cases were reported, according to the study, which was published online in Pediatrics.

Many of the children experienced clinical effects, such as depression of the central nervous system, impaired coordination, confusion, agitation, an increase in heart rate, or dilated pupils. No deaths were reported.

“These exposures can cause significant toxicity and are responsible for an increasing number of hospitalizations,” study coauthor Marit S. Tweet, MD, of Southern Illinois University, Springfield, and colleagues wrote.

About 97% of the exposures occurred in residences – 90% at the child’s own home – and about half of the cases involved 2- and 3-year-olds, they noted.
 

Examining national trends

Twenty-one states have approved recreational cannabis for people aged 21 years and older.

Prior research has shown that calls to poison centers and visits to emergency departments for pediatric cannabis consumption increased in certain states after the drug became legal in those jurisdictions.

To assess national trends, Dr. Tweet’s group analyzed cases in the National Poison Data System, which tracks potentially toxic exposures reported to poison control centers in the United States.

During the 5-year period, they identified 7,043 exposures to edible cannabis by children younger than age 6. In 2.2% of the cases, the drug had a major effect, defined as being either life-threatening or causing residual disability. In 21.9% of cases, the effect was considered to be moderate, with symptoms that were more pronounced, prolonged, or systemic than minor effects.

About 8% of the children were admitted to critical care units; 14.6% were admitted to non–critical care units.

Of 4,827 cases for which there was information about the clinical effects of the exposure and therapies used, 70% involved CNS depression, including 1.9% with “more severe CNS effects, including major CNS depression or coma,” according to the report.

Patients also experienced ataxia (7.4%), agitation (7.1%), confusion (6.1%), tremor (2%), and seizures (1.6%). Other common symptoms included tachycardia (11.4%), vomiting (9.5%), mydriasis (5.9%), and respiratory depression (3.1%).

Treatments for the exposures included intravenous fluids (20.7%), food or snacks (10.3%), and oxygen therapy (4%). Some patients also received naloxone (1.4%) or charcoal (2.1%).

“The total number of children requiring intubation during the study period was 35, or approximately 1 in 140,” the researchers reported. “Although this was a relatively rare occurrence, it is important for clinicians to be aware that life-threatening sequelae can develop and may necessitate invasive supportive care measures.”
 

Tempting and toxic

For toddlers, edible cannabis may be especially tempting and toxic. Edibles can “resemble common treats such as candies, chocolates, cookies, or other baked goods,” the researchers wrote. Children would not recognize, for example, that one chocolate bar might contain multiple 10-mg servings of tetrahydrocannabinol intended for adults.

Poison centers have been fielding more calls about edible cannabis use by older children, as well.

Adrienne Hughes, MD, assistant professor of emergency medicine at Oregon Health and Science University, Portland, recently found that many cases of intentional misuse and abuse by adolescents involve edible forms of cannabis.

“While marijuana carries a low risk for severe toxicity, it can be inebriating to the point of poor judgment, risk of falls or other injury, and occasionally a panic reaction in the novice user and unsuspecting children who accidentally ingest these products,” Dr. Hughes said in an interview.

Measures to keep edibles away from children could include changing how the products are packaged, limiting the maximum dose of drug per package, and educating the public about the risks to children, Dr. Tweet’s group wrote. They highlighted a 2019 position statement from the American College of Medical Toxicology that includes recommendations for responsible storage habits.

Dr. Hughes echoed one suggestion that is mentioned in the position statement: Parents should consider keeping their cannabis products locked up.

The researchers disclosed no relevant financial relationships.

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

The number of young children unintentionally exposed to edible cannabis products in the United States jumped 1,375% over a 5-year period, according to a new analysis of data from poison control centers.

In 2017, centers received 207 reports of children aged 5 years and younger who ingested edible cannabis. In 2021, 3,054 such cases were reported, according to the study, which was published online in Pediatrics.

Many of the children experienced clinical effects, such as depression of the central nervous system, impaired coordination, confusion, agitation, an increase in heart rate, or dilated pupils. No deaths were reported.

“These exposures can cause significant toxicity and are responsible for an increasing number of hospitalizations,” study coauthor Marit S. Tweet, MD, of Southern Illinois University, Springfield, and colleagues wrote.

About 97% of the exposures occurred in residences – 90% at the child’s own home – and about half of the cases involved 2- and 3-year-olds, they noted.
 

Examining national trends

Twenty-one states have approved recreational cannabis for people aged 21 years and older.

Prior research has shown that calls to poison centers and visits to emergency departments for pediatric cannabis consumption increased in certain states after the drug became legal in those jurisdictions.

To assess national trends, Dr. Tweet’s group analyzed cases in the National Poison Data System, which tracks potentially toxic exposures reported to poison control centers in the United States.

During the 5-year period, they identified 7,043 exposures to edible cannabis by children younger than age 6. In 2.2% of the cases, the drug had a major effect, defined as being either life-threatening or causing residual disability. In 21.9% of cases, the effect was considered to be moderate, with symptoms that were more pronounced, prolonged, or systemic than minor effects.

About 8% of the children were admitted to critical care units; 14.6% were admitted to non–critical care units.

Of 4,827 cases for which there was information about the clinical effects of the exposure and therapies used, 70% involved CNS depression, including 1.9% with “more severe CNS effects, including major CNS depression or coma,” according to the report.

Patients also experienced ataxia (7.4%), agitation (7.1%), confusion (6.1%), tremor (2%), and seizures (1.6%). Other common symptoms included tachycardia (11.4%), vomiting (9.5%), mydriasis (5.9%), and respiratory depression (3.1%).

Treatments for the exposures included intravenous fluids (20.7%), food or snacks (10.3%), and oxygen therapy (4%). Some patients also received naloxone (1.4%) or charcoal (2.1%).

“The total number of children requiring intubation during the study period was 35, or approximately 1 in 140,” the researchers reported. “Although this was a relatively rare occurrence, it is important for clinicians to be aware that life-threatening sequelae can develop and may necessitate invasive supportive care measures.”
 

Tempting and toxic

For toddlers, edible cannabis may be especially tempting and toxic. Edibles can “resemble common treats such as candies, chocolates, cookies, or other baked goods,” the researchers wrote. Children would not recognize, for example, that one chocolate bar might contain multiple 10-mg servings of tetrahydrocannabinol intended for adults.

Poison centers have been fielding more calls about edible cannabis use by older children, as well.

Adrienne Hughes, MD, assistant professor of emergency medicine at Oregon Health and Science University, Portland, recently found that many cases of intentional misuse and abuse by adolescents involve edible forms of cannabis.

“While marijuana carries a low risk for severe toxicity, it can be inebriating to the point of poor judgment, risk of falls or other injury, and occasionally a panic reaction in the novice user and unsuspecting children who accidentally ingest these products,” Dr. Hughes said in an interview.

Measures to keep edibles away from children could include changing how the products are packaged, limiting the maximum dose of drug per package, and educating the public about the risks to children, Dr. Tweet’s group wrote. They highlighted a 2019 position statement from the American College of Medical Toxicology that includes recommendations for responsible storage habits.

Dr. Hughes echoed one suggestion that is mentioned in the position statement: Parents should consider keeping their cannabis products locked up.

The researchers disclosed no relevant financial relationships.

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

The number of young children unintentionally exposed to edible cannabis products in the United States jumped 1,375% over a 5-year period, according to a new analysis of data from poison control centers.

In 2017, centers received 207 reports of children aged 5 years and younger who ingested edible cannabis. In 2021, 3,054 such cases were reported, according to the study, which was published online in Pediatrics.

Many of the children experienced clinical effects, such as depression of the central nervous system, impaired coordination, confusion, agitation, an increase in heart rate, or dilated pupils. No deaths were reported.

“These exposures can cause significant toxicity and are responsible for an increasing number of hospitalizations,” study coauthor Marit S. Tweet, MD, of Southern Illinois University, Springfield, and colleagues wrote.

About 97% of the exposures occurred in residences – 90% at the child’s own home – and about half of the cases involved 2- and 3-year-olds, they noted.
 

Examining national trends

Twenty-one states have approved recreational cannabis for people aged 21 years and older.

Prior research has shown that calls to poison centers and visits to emergency departments for pediatric cannabis consumption increased in certain states after the drug became legal in those jurisdictions.

To assess national trends, Dr. Tweet’s group analyzed cases in the National Poison Data System, which tracks potentially toxic exposures reported to poison control centers in the United States.

During the 5-year period, they identified 7,043 exposures to edible cannabis by children younger than age 6. In 2.2% of the cases, the drug had a major effect, defined as being either life-threatening or causing residual disability. In 21.9% of cases, the effect was considered to be moderate, with symptoms that were more pronounced, prolonged, or systemic than minor effects.

About 8% of the children were admitted to critical care units; 14.6% were admitted to non–critical care units.

Of 4,827 cases for which there was information about the clinical effects of the exposure and therapies used, 70% involved CNS depression, including 1.9% with “more severe CNS effects, including major CNS depression or coma,” according to the report.

Patients also experienced ataxia (7.4%), agitation (7.1%), confusion (6.1%), tremor (2%), and seizures (1.6%). Other common symptoms included tachycardia (11.4%), vomiting (9.5%), mydriasis (5.9%), and respiratory depression (3.1%).

Treatments for the exposures included intravenous fluids (20.7%), food or snacks (10.3%), and oxygen therapy (4%). Some patients also received naloxone (1.4%) or charcoal (2.1%).

“The total number of children requiring intubation during the study period was 35, or approximately 1 in 140,” the researchers reported. “Although this was a relatively rare occurrence, it is important for clinicians to be aware that life-threatening sequelae can develop and may necessitate invasive supportive care measures.”
 

Tempting and toxic

For toddlers, edible cannabis may be especially tempting and toxic. Edibles can “resemble common treats such as candies, chocolates, cookies, or other baked goods,” the researchers wrote. Children would not recognize, for example, that one chocolate bar might contain multiple 10-mg servings of tetrahydrocannabinol intended for adults.

Poison centers have been fielding more calls about edible cannabis use by older children, as well.

Adrienne Hughes, MD, assistant professor of emergency medicine at Oregon Health and Science University, Portland, recently found that many cases of intentional misuse and abuse by adolescents involve edible forms of cannabis.

“While marijuana carries a low risk for severe toxicity, it can be inebriating to the point of poor judgment, risk of falls or other injury, and occasionally a panic reaction in the novice user and unsuspecting children who accidentally ingest these products,” Dr. Hughes said in an interview.

Measures to keep edibles away from children could include changing how the products are packaged, limiting the maximum dose of drug per package, and educating the public about the risks to children, Dr. Tweet’s group wrote. They highlighted a 2019 position statement from the American College of Medical Toxicology that includes recommendations for responsible storage habits.

Dr. Hughes echoed one suggestion that is mentioned in the position statement: Parents should consider keeping their cannabis products locked up.

The researchers disclosed no relevant financial relationships.

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

Clinicians in the United States are reporting more cases of invasive group A streptococcal infection (iGAS) in children, according to an alert from the Centers for Disease Control and Prevention. These infections are rare but can be deadly, and they can affect adults as well as children.

Health care providers should consider this bacterial infection as a possible cause of severe illness in children and adults, including those with recent or co-occurring viral respiratory infections, the agency advised in a Dec. 22 alert.

In some cases, iGAS manifests as persistent or worsening symptoms after a patient with a known viral infection initially starts to show signs of improvement, according to the agency.

In November, the CDC was notified about a possible increase in cases of pediatric iGAS at a hospital in Colorado. Since then, two surveillance systems – the Infectious Diseases Society of America’s Emerging Infections Network and the CDC’s Active Bacterial Core Surveillance System – have detected potential increases in pediatric iGAS cases in other states.

The uptick has coincided with “increased circulation of respiratory syncytial virus (RSV), influenza viruses, SARS-CoV-2, and other respiratory viruses,” the advisory stated. “While the overall number of cases has remained relatively low and iGAS infections remain rare in children, [the] CDC is investigating these reports.”
 

Not just strep throat

Group A Streptococcus bacteria can cause strep throat and infections in skin and soft tissue. The pathogens also can lead to uncommon but severe diseases, such as sepsis, streptococcal toxic shock syndrome, and necrotizing fasciitis, according to the CDC. The severe illnesses “are associated with high mortality rates and require immediate treatment, including appropriate antibiotic therapy,” the agency said.

Groups at higher risk for iGAS include people aged 65 years or older, American Indian and Alaska Native populations, residents of long-term care facilities, those with wounds or skin disease, people who inject drugs, and people experiencing homelessness.

People with medical conditions such as diabetes, cancer, immunosuppression, and chronic kidney, heart, or respiratory disease also are at increased risk.

Invasive strep A infections initially decreased during the COVID-19 pandemic amid measures to reduce the spread of disease, such as masking and social distancing. But since September, monthly cases have exceeded those in 2020 and 2021. “It is too early to determine whether this rise is beyond what would be expected for pre-COVID” seasonal patterns, the CDC said.
 

Recommendations

Because iGAS can occur after the flu or chickenpox, health care providers should offer influenza and varicella vaccinations to all eligible people who are not up to date with their vaccines.

In addition, clinicians should educate patients about symptoms of iGAS that require urgent medical attention, including necrotizing fasciitis, cellulitis, and toxic shock syndrome.

They also should obtain cultures for suspected cases of iGAS as clinically indicated, follow guidelines for the diagnosis and treatment of strep throat, and be aware of alternative ways to treat strep throat in children amid a shortage of amoxicillin suspension.

Researchers have reported more cases of iGAS in the United Kingdom this year, as well. According to the UK Health Security Agency, 74 deaths, including 16 children, in England have been attributed to iGAS since September.

“We know that this is concerning for parents, but I want to stress that while we are seeing an increase in cases in children, this remains very uncommon,” UKHSA Deputy Director Colin Brown said in a news release. “There are lots of winter bugs circulating that can make your child feel unwell that mostly aren’t cause for alarm. However, make sure you talk to a health professional if your child is getting worse after a bout of scarlet fever, a sore throat, or respiratory infection.”

A fever that doesn’t resolve, dehydration, extreme tiredness, and difficulty breathing are signs to watch out for, Dr. Brown said.

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

Clinicians in the United States are reporting more cases of invasive group A streptococcal infection (iGAS) in children, according to an alert from the Centers for Disease Control and Prevention. These infections are rare but can be deadly, and they can affect adults as well as children.

Health care providers should consider this bacterial infection as a possible cause of severe illness in children and adults, including those with recent or co-occurring viral respiratory infections, the agency advised in a Dec. 22 alert.

In some cases, iGAS manifests as persistent or worsening symptoms after a patient with a known viral infection initially starts to show signs of improvement, according to the agency.

In November, the CDC was notified about a possible increase in cases of pediatric iGAS at a hospital in Colorado. Since then, two surveillance systems – the Infectious Diseases Society of America’s Emerging Infections Network and the CDC’s Active Bacterial Core Surveillance System – have detected potential increases in pediatric iGAS cases in other states.

The uptick has coincided with “increased circulation of respiratory syncytial virus (RSV), influenza viruses, SARS-CoV-2, and other respiratory viruses,” the advisory stated. “While the overall number of cases has remained relatively low and iGAS infections remain rare in children, [the] CDC is investigating these reports.”
 

Not just strep throat

Group A Streptococcus bacteria can cause strep throat and infections in skin and soft tissue. The pathogens also can lead to uncommon but severe diseases, such as sepsis, streptococcal toxic shock syndrome, and necrotizing fasciitis, according to the CDC. The severe illnesses “are associated with high mortality rates and require immediate treatment, including appropriate antibiotic therapy,” the agency said.

Groups at higher risk for iGAS include people aged 65 years or older, American Indian and Alaska Native populations, residents of long-term care facilities, those with wounds or skin disease, people who inject drugs, and people experiencing homelessness.

People with medical conditions such as diabetes, cancer, immunosuppression, and chronic kidney, heart, or respiratory disease also are at increased risk.

Invasive strep A infections initially decreased during the COVID-19 pandemic amid measures to reduce the spread of disease, such as masking and social distancing. But since September, monthly cases have exceeded those in 2020 and 2021. “It is too early to determine whether this rise is beyond what would be expected for pre-COVID” seasonal patterns, the CDC said.
 

Recommendations

Because iGAS can occur after the flu or chickenpox, health care providers should offer influenza and varicella vaccinations to all eligible people who are not up to date with their vaccines.

In addition, clinicians should educate patients about symptoms of iGAS that require urgent medical attention, including necrotizing fasciitis, cellulitis, and toxic shock syndrome.

They also should obtain cultures for suspected cases of iGAS as clinically indicated, follow guidelines for the diagnosis and treatment of strep throat, and be aware of alternative ways to treat strep throat in children amid a shortage of amoxicillin suspension.

Researchers have reported more cases of iGAS in the United Kingdom this year, as well. According to the UK Health Security Agency, 74 deaths, including 16 children, in England have been attributed to iGAS since September.

“We know that this is concerning for parents, but I want to stress that while we are seeing an increase in cases in children, this remains very uncommon,” UKHSA Deputy Director Colin Brown said in a news release. “There are lots of winter bugs circulating that can make your child feel unwell that mostly aren’t cause for alarm. However, make sure you talk to a health professional if your child is getting worse after a bout of scarlet fever, a sore throat, or respiratory infection.”

A fever that doesn’t resolve, dehydration, extreme tiredness, and difficulty breathing are signs to watch out for, Dr. Brown said.

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

Clinicians in the United States are reporting more cases of invasive group A streptococcal infection (iGAS) in children, according to an alert from the Centers for Disease Control and Prevention. These infections are rare but can be deadly, and they can affect adults as well as children.

Health care providers should consider this bacterial infection as a possible cause of severe illness in children and adults, including those with recent or co-occurring viral respiratory infections, the agency advised in a Dec. 22 alert.

In some cases, iGAS manifests as persistent or worsening symptoms after a patient with a known viral infection initially starts to show signs of improvement, according to the agency.

In November, the CDC was notified about a possible increase in cases of pediatric iGAS at a hospital in Colorado. Since then, two surveillance systems – the Infectious Diseases Society of America’s Emerging Infections Network and the CDC’s Active Bacterial Core Surveillance System – have detected potential increases in pediatric iGAS cases in other states.

The uptick has coincided with “increased circulation of respiratory syncytial virus (RSV), influenza viruses, SARS-CoV-2, and other respiratory viruses,” the advisory stated. “While the overall number of cases has remained relatively low and iGAS infections remain rare in children, [the] CDC is investigating these reports.”
 

Not just strep throat

Group A Streptococcus bacteria can cause strep throat and infections in skin and soft tissue. The pathogens also can lead to uncommon but severe diseases, such as sepsis, streptococcal toxic shock syndrome, and necrotizing fasciitis, according to the CDC. The severe illnesses “are associated with high mortality rates and require immediate treatment, including appropriate antibiotic therapy,” the agency said.

Groups at higher risk for iGAS include people aged 65 years or older, American Indian and Alaska Native populations, residents of long-term care facilities, those with wounds or skin disease, people who inject drugs, and people experiencing homelessness.

People with medical conditions such as diabetes, cancer, immunosuppression, and chronic kidney, heart, or respiratory disease also are at increased risk.

Invasive strep A infections initially decreased during the COVID-19 pandemic amid measures to reduce the spread of disease, such as masking and social distancing. But since September, monthly cases have exceeded those in 2020 and 2021. “It is too early to determine whether this rise is beyond what would be expected for pre-COVID” seasonal patterns, the CDC said.
 

Recommendations

Because iGAS can occur after the flu or chickenpox, health care providers should offer influenza and varicella vaccinations to all eligible people who are not up to date with their vaccines.

In addition, clinicians should educate patients about symptoms of iGAS that require urgent medical attention, including necrotizing fasciitis, cellulitis, and toxic shock syndrome.

They also should obtain cultures for suspected cases of iGAS as clinically indicated, follow guidelines for the diagnosis and treatment of strep throat, and be aware of alternative ways to treat strep throat in children amid a shortage of amoxicillin suspension.

Researchers have reported more cases of iGAS in the United Kingdom this year, as well. According to the UK Health Security Agency, 74 deaths, including 16 children, in England have been attributed to iGAS since September.

“We know that this is concerning for parents, but I want to stress that while we are seeing an increase in cases in children, this remains very uncommon,” UKHSA Deputy Director Colin Brown said in a news release. “There are lots of winter bugs circulating that can make your child feel unwell that mostly aren’t cause for alarm. However, make sure you talk to a health professional if your child is getting worse after a bout of scarlet fever, a sore throat, or respiratory infection.”

A fever that doesn’t resolve, dehydration, extreme tiredness, and difficulty breathing are signs to watch out for, Dr. Brown said.

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

More than a quarter of patients who were shot by assailants with guns had their injuries mislabeled as “unintentional” at hospital discharge, according to a review of more than 1,200 cases at three U.S. trauma centers.

These coding inaccuracies could distort our understanding of gun violence in the United States and make it seem like accidental shootings are more common than they really are, researchers reported in JAMA Network Open.

“The systematic error in intent classification is not widely known or acknowledged by researchers in this field,” Philip J. Cook, PhD, of Duke University, Durham, N.C., and Susan T. Parker, of the University of Michigan, Ann Arbor, wrote in an invited commentary about the new findings. “The bulk of all shootings, nonfatal and fatal together, are assaults, which is to say the result of one person intentionally shooting another. An accurate statistical portrait thus suggests that gun violence is predominantly a crime problem.”

In 2020, 79% of all homicides and 53% of all suicides involved firearms, the CDC reported. Gun violence is now the leading cause of death for children in the United States, government data show.

For the new study, Matthew Miller, MD, ScD, of Northeastern University and the Harvard Injury Control Research Center in Boston, and his colleagues examined how International Classification of Diseases (ICD) codes may misclassify the intent behind gunshot injuries.

Dr. Miller’s group looked at 1,227 incidents between 2008 and 2019 at three major trauma centers – Brigham and Women’s Hospital and Massachusetts General Hospital, both in Boston, and Harborview Medical Center in Seattle.

Of those shootings, 837 (68.2%) involved assaults, 168 (13.5%) were unintentional, 124 (9.9%) were deliberate self-harm, and 43 (3.4%) were instances of legal intervention, based on the researchers’ review of medical records.

ICD codes at discharge, however, labeled 581 cases (47.4%) as assaults and 432 (35.2%) as unintentional.

The researchers found that 234 of the 837 assaults (28%) and 9 of the 43 legal interventions (20.9%) were miscoded as unintentional. This problem occurred even when the “medical narrative explicitly indicated that the shooting was an act of interpersonal violence,” such as a drive-by shooting or an act of domestic violence, the researchers reported.

Hospital trauma registrars, who detail the circumstances surrounding injuries, were mostly in agreement with the researchers.

Medical coders “would likely have little trouble characterizing firearm injury intent accurately if incentives were created for them to do so,” the authors wrote.

Trends and interventions

Separately, researchers published studies showing that gun violence tends to affect various demographics differently, and that remediating abandoned houses could help reduce gun crime.

Lindsay Young, of the University of Cincinnati, and Henry Xiang, MD, PhD, director of the Center for Pediatric Trauma Research at Nationwide Children’s Hospital in Columbus, Ohio, analyzed rates of firearm deaths from 1981 to 2020.

They found that the rate of firearm-related homicide was five times higher among males than females, and the rate of suicide involving firearms was nearly seven times higher for men, they reported in PLOS ONE.

Black men were the group most affected by homicide, whereas White men were most affected by suicide, they found.

To see if fixing abandoned properties would improve health and reduce gun violence in low-income, Black neighborhoods in Philadelphia, Eugenia C. South, MD, of the University of Pennsylvania, Philadelphia, and colleagues conducted a randomized trial.

They randomly assigned abandoned properties in some areas to undergo full remediation (installing working windows and doors, cleaning trash, and weeding); trash cleanup and weeding only; or no intervention.

“Abandoned houses that were remediated showed substantial drops in nearby weapons violations (−8.43%), gun assaults (−13.12%), and to a lesser extent shootings (−6.96%),” the researchers reported.

The intervention targets effects of segregation that have resulted from “historical and ongoing government and private-sector policies” that lead to disinvestment in Black, urban communities, they wrote. Abandoned houses can be used to store firearms and for other illegal activity. They also can engender feelings of fear, neglect, and stress in communities, the researchers noted.

Dr. Miller’s study was funded by the National Collaborative on Gun Violence Research; coauthors disclosed corporate, government, and university grants. The full list of disclosures can be found with the original article. Editorialists Dr. Cook and Dr. Parker report no relevant financial relationships. Dr. South’s study was funded by the National Institutes of Health. Dr. South and some coauthors disclosed government grants.
 

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

More than a quarter of patients who were shot by assailants with guns had their injuries mislabeled as “unintentional” at hospital discharge, according to a review of more than 1,200 cases at three U.S. trauma centers.

These coding inaccuracies could distort our understanding of gun violence in the United States and make it seem like accidental shootings are more common than they really are, researchers reported in JAMA Network Open.

“The systematic error in intent classification is not widely known or acknowledged by researchers in this field,” Philip J. Cook, PhD, of Duke University, Durham, N.C., and Susan T. Parker, of the University of Michigan, Ann Arbor, wrote in an invited commentary about the new findings. “The bulk of all shootings, nonfatal and fatal together, are assaults, which is to say the result of one person intentionally shooting another. An accurate statistical portrait thus suggests that gun violence is predominantly a crime problem.”

In 2020, 79% of all homicides and 53% of all suicides involved firearms, the CDC reported. Gun violence is now the leading cause of death for children in the United States, government data show.

For the new study, Matthew Miller, MD, ScD, of Northeastern University and the Harvard Injury Control Research Center in Boston, and his colleagues examined how International Classification of Diseases (ICD) codes may misclassify the intent behind gunshot injuries.

Dr. Miller’s group looked at 1,227 incidents between 2008 and 2019 at three major trauma centers – Brigham and Women’s Hospital and Massachusetts General Hospital, both in Boston, and Harborview Medical Center in Seattle.

Of those shootings, 837 (68.2%) involved assaults, 168 (13.5%) were unintentional, 124 (9.9%) were deliberate self-harm, and 43 (3.4%) were instances of legal intervention, based on the researchers’ review of medical records.

ICD codes at discharge, however, labeled 581 cases (47.4%) as assaults and 432 (35.2%) as unintentional.

The researchers found that 234 of the 837 assaults (28%) and 9 of the 43 legal interventions (20.9%) were miscoded as unintentional. This problem occurred even when the “medical narrative explicitly indicated that the shooting was an act of interpersonal violence,” such as a drive-by shooting or an act of domestic violence, the researchers reported.

Hospital trauma registrars, who detail the circumstances surrounding injuries, were mostly in agreement with the researchers.

Medical coders “would likely have little trouble characterizing firearm injury intent accurately if incentives were created for them to do so,” the authors wrote.

Trends and interventions

Separately, researchers published studies showing that gun violence tends to affect various demographics differently, and that remediating abandoned houses could help reduce gun crime.

Lindsay Young, of the University of Cincinnati, and Henry Xiang, MD, PhD, director of the Center for Pediatric Trauma Research at Nationwide Children’s Hospital in Columbus, Ohio, analyzed rates of firearm deaths from 1981 to 2020.

They found that the rate of firearm-related homicide was five times higher among males than females, and the rate of suicide involving firearms was nearly seven times higher for men, they reported in PLOS ONE.

Black men were the group most affected by homicide, whereas White men were most affected by suicide, they found.

To see if fixing abandoned properties would improve health and reduce gun violence in low-income, Black neighborhoods in Philadelphia, Eugenia C. South, MD, of the University of Pennsylvania, Philadelphia, and colleagues conducted a randomized trial.

They randomly assigned abandoned properties in some areas to undergo full remediation (installing working windows and doors, cleaning trash, and weeding); trash cleanup and weeding only; or no intervention.

“Abandoned houses that were remediated showed substantial drops in nearby weapons violations (−8.43%), gun assaults (−13.12%), and to a lesser extent shootings (−6.96%),” the researchers reported.

The intervention targets effects of segregation that have resulted from “historical and ongoing government and private-sector policies” that lead to disinvestment in Black, urban communities, they wrote. Abandoned houses can be used to store firearms and for other illegal activity. They also can engender feelings of fear, neglect, and stress in communities, the researchers noted.

Dr. Miller’s study was funded by the National Collaborative on Gun Violence Research; coauthors disclosed corporate, government, and university grants. The full list of disclosures can be found with the original article. Editorialists Dr. Cook and Dr. Parker report no relevant financial relationships. Dr. South’s study was funded by the National Institutes of Health. Dr. South and some coauthors disclosed government grants.
 

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

More than a quarter of patients who were shot by assailants with guns had their injuries mislabeled as “unintentional” at hospital discharge, according to a review of more than 1,200 cases at three U.S. trauma centers.

These coding inaccuracies could distort our understanding of gun violence in the United States and make it seem like accidental shootings are more common than they really are, researchers reported in JAMA Network Open.

“The systematic error in intent classification is not widely known or acknowledged by researchers in this field,” Philip J. Cook, PhD, of Duke University, Durham, N.C., and Susan T. Parker, of the University of Michigan, Ann Arbor, wrote in an invited commentary about the new findings. “The bulk of all shootings, nonfatal and fatal together, are assaults, which is to say the result of one person intentionally shooting another. An accurate statistical portrait thus suggests that gun violence is predominantly a crime problem.”

In 2020, 79% of all homicides and 53% of all suicides involved firearms, the CDC reported. Gun violence is now the leading cause of death for children in the United States, government data show.

For the new study, Matthew Miller, MD, ScD, of Northeastern University and the Harvard Injury Control Research Center in Boston, and his colleagues examined how International Classification of Diseases (ICD) codes may misclassify the intent behind gunshot injuries.

Dr. Miller’s group looked at 1,227 incidents between 2008 and 2019 at three major trauma centers – Brigham and Women’s Hospital and Massachusetts General Hospital, both in Boston, and Harborview Medical Center in Seattle.

Of those shootings, 837 (68.2%) involved assaults, 168 (13.5%) were unintentional, 124 (9.9%) were deliberate self-harm, and 43 (3.4%) were instances of legal intervention, based on the researchers’ review of medical records.

ICD codes at discharge, however, labeled 581 cases (47.4%) as assaults and 432 (35.2%) as unintentional.

The researchers found that 234 of the 837 assaults (28%) and 9 of the 43 legal interventions (20.9%) were miscoded as unintentional. This problem occurred even when the “medical narrative explicitly indicated that the shooting was an act of interpersonal violence,” such as a drive-by shooting or an act of domestic violence, the researchers reported.

Hospital trauma registrars, who detail the circumstances surrounding injuries, were mostly in agreement with the researchers.

Medical coders “would likely have little trouble characterizing firearm injury intent accurately if incentives were created for them to do so,” the authors wrote.

Trends and interventions

Separately, researchers published studies showing that gun violence tends to affect various demographics differently, and that remediating abandoned houses could help reduce gun crime.

Lindsay Young, of the University of Cincinnati, and Henry Xiang, MD, PhD, director of the Center for Pediatric Trauma Research at Nationwide Children’s Hospital in Columbus, Ohio, analyzed rates of firearm deaths from 1981 to 2020.

They found that the rate of firearm-related homicide was five times higher among males than females, and the rate of suicide involving firearms was nearly seven times higher for men, they reported in PLOS ONE.

Black men were the group most affected by homicide, whereas White men were most affected by suicide, they found.

To see if fixing abandoned properties would improve health and reduce gun violence in low-income, Black neighborhoods in Philadelphia, Eugenia C. South, MD, of the University of Pennsylvania, Philadelphia, and colleagues conducted a randomized trial.

They randomly assigned abandoned properties in some areas to undergo full remediation (installing working windows and doors, cleaning trash, and weeding); trash cleanup and weeding only; or no intervention.

“Abandoned houses that were remediated showed substantial drops in nearby weapons violations (−8.43%), gun assaults (−13.12%), and to a lesser extent shootings (−6.96%),” the researchers reported.

The intervention targets effects of segregation that have resulted from “historical and ongoing government and private-sector policies” that lead to disinvestment in Black, urban communities, they wrote. Abandoned houses can be used to store firearms and for other illegal activity. They also can engender feelings of fear, neglect, and stress in communities, the researchers noted.

Dr. Miller’s study was funded by the National Collaborative on Gun Violence Research; coauthors disclosed corporate, government, and university grants. The full list of disclosures can be found with the original article. Editorialists Dr. Cook and Dr. Parker report no relevant financial relationships. Dr. South’s study was funded by the National Institutes of Health. Dr. South and some coauthors disclosed government grants.
 

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

At a routine doctor’s visit, a member of the clinic staff takes digital pictures of a patient’s retinas.

Within seconds, an artificial intelligence (AI) algorithm determines if the patient has diabetic retinopathy, a complication of diabetes that can lead to blindness.

If they do, the physician refers the patient to an eye care specialist for further evaluation and treatment.

This scene already is playing out in primary care clinics around the United States and in other countries, and it may become more common.

Health care systems intend to expand their use of AI to screen for diabetic retinopathy in 2023, and companies are developing more algorithms for this purpose.

In May, OSF HealthCare, a network of medical facilities headquartered in Peoria, Ill., piloted an AI system to diagnose diabetic retinopathy, a condition that affects an estimated 4 million Americans. In 2023, the health care system plans to expand the technology to 34 locations.

Meanwhile, the Food and Drug Administration in November approved a new AI system to diagnose diabetic retinopathy, making AEYE-DS from AEYE Health the third such product on the market.

Roomasa Channa, MD, a clinician-scientist with the McPherson Eye Research Institute at the University of Wisconsin–Madison, has studied the use of AI in teenage patients with diabetes. She said she soon plans to use AI screening in federally qualified health centers to screen adults with diabetes.

Dr. Channa welcomed the latest regulatory clearance and said she hopes another Food and Drug Administration–cleared algorithm product will improve accessibility to the technology.

“It is good to see more players in the field: We need this technology to be readily available and affordable,” she said in an interview.
 

A mixed reception

Responses from physicians to this type of AI have been mixed. Some worry, for instance, that the algorithms might be programmed with unrecognized biases that could lead them to less accurately interpret images from certain patient groups. Researchers should be on the lookout out for this possibility, Dr. Channa said.

“We need more real-world studies in different settings,” she said. “We also need to keep collecting data on AI performance post approval,” like investigators do for newly approved drugs.

The first AI system to diagnose diabetic retinopathy, IDx-DR, was approved by the FDA in 2018 and rolled out in retail clinics soon after. A second system, EyeArt, gained clearance by the agency in 2020.

Adding AI algorithms into primary care practice has changed how patients with diabetes can receive a screening. It also has introduced a new way for certain medical conditions to be diagnosed in primary care.

The American Medical Association in 2021 released a new CPT code to allow clinicians to bill government and private insurers for use of these services. CPT code 92229 refers to imaging of the retina to detect disease with an automated analysis and report at the point of care.
 

Meeting a need

Health care clinics in underserved areas often do not have eye care providers onsite to conduct recommended screening exams, so AI could help patients receive screening who otherwise would not get it, Dr. Channa said.

Dr. Channa and colleagues successfully used one AI system, IDx-DR, to screen children at a pediatric diabetes clinic. Over a year, screening rates jumped from 49% to 95%.

This technology “can potentially help us in decreasing disparities in care and focusing our efforts on patients with the most severe diseases,” she said.

OSF HealthCare recently obtained an approximately $1 million grant from drug company Regeneron to expand the use of AI-based screening for diabetic retinopathy, following a successful pilot. Regeneron markets a treatment for diabetic retinopathy.

Without an AI option, recommended eye screening for patients with diabetes often falls through the cracks, according to Mark Meeker, DO, vice president of community medicine at OSF. Primary care physicians may refer patients elsewhere for their annual retinopathy screening exam.

“That often doesn’t get completed because it’s another trip, another appointment, another time away from work,” Dr. Meeker said.

All patients with diabetes should have their eyes screened each year, but between one- to two-thirds of patients nationwide do not, he said.

A member of the clinic staff takes digital pictures of the retina, almost always through undilated pupils.

If the result is normal, the patient is scheduled for another follow-up screening in a year. If early signs of diabetic retinopathy are spotted, patients are referred to an eye care specialist.

After 7 months of the pilot program, OSF had screened about 350 patients. Approximately 20% had diabetic retinopathy, according to OSF.
 

‘A huge impact’

OSF has about 66,000 patients with diabetes. About two-thirds do not receive annual screening, Dr. Meeker estimated. “This can have a huge impact on the quality of life in the coming years for our diabetic patients. It’s pretty profound.”

Eye care specialists typically treat diabetic retinopathy with lasers, surgery, or medication. For primary care clinicians, however, AI screening for retinopathy is an opportunity to emphasize how important it is to manage the disease and what its consequences can be.

AI screening is “another tool for us to use to get patients more engaged in their own care,” Dr. Meeker said. “This is probably the biggest advance in AI affecting our day-to-day interaction with patients that we’ve seen in primary care.”
 

A business opportunity, too?

The IDx-DR platform OSF is using in its clinics is owned by the company Digital Diagnostics. OSF Ventures, an investment arm of OSF HealthCare, has invested in the company, the health care system announced in August.

Other companies have had their products used in practice. In 2019, for example, Eyenuk described how its EyeArt system had been used to screen thousands of patients in Germany and in Italy.

And in 2021, Eyenuk reported that its customer base in the United States had expanded to more than 25 locations. The company credited a Centers for Medicare & Medicaid Services plan to cover CPT code 92229 with supporting this growth.

Zack Dvey-Aharon, PhD, the CEO of AEYE Health, said the company was motivated to enter this space when regulators decided that AI could be used to diagnose a condition — not just as a tool to help doctors arrive at a diagnosis.

With proper training, a person can diagnose diabetic retinopathy relatively easily if the image of the retina is of excellent quality. If image is dark or blurry, however, it’s a different story.

AI has its advantages in this scenario, according to Dr. Dvey-Aharon. “For AI, those darker, more blurry images are actually highly readable with fantastic accuracy.”
 

More to come?

The possibilities of AI in analyzing retinal images are vast.

New research shows that AI may be able to detect Alzheimer’s disease or predict a person’s risk for heart attack and stroke based on snapshots of the retina.

The retina may also shed light on kidney disease, control of blood glucose and blood pressure, hepatobiliary disease, and coronary artery calcium, according to Eric J. Topol, MD, director of Scripps Research Translational Institute in La Jolla, Calif.

Beyond retinas, interpretation of electrocardiograms (ECGs) may be another frontier for AI in primary care. In one trial, an AI-enhanced ECG reading facilitated early diagnosis of low ejection fraction, and some doctors now receive these reports routinely, Dr. Topol wrote.

The potential value of AI in medicine “extends to virtually all forms of medical images that have been assessed to date,” Dr. Topol wrote on his “Ground Truths” Substack.

Although much of the focus has been on what AI can see, researchers also are exploring what AI can do with what it hears. Early research suggests that algorithms may be able to diagnose disease by analyzing patients’ voices.

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

At a routine doctor’s visit, a member of the clinic staff takes digital pictures of a patient’s retinas.

Within seconds, an artificial intelligence (AI) algorithm determines if the patient has diabetic retinopathy, a complication of diabetes that can lead to blindness.

If they do, the physician refers the patient to an eye care specialist for further evaluation and treatment.

This scene already is playing out in primary care clinics around the United States and in other countries, and it may become more common.

Health care systems intend to expand their use of AI to screen for diabetic retinopathy in 2023, and companies are developing more algorithms for this purpose.

In May, OSF HealthCare, a network of medical facilities headquartered in Peoria, Ill., piloted an AI system to diagnose diabetic retinopathy, a condition that affects an estimated 4 million Americans. In 2023, the health care system plans to expand the technology to 34 locations.

Meanwhile, the Food and Drug Administration in November approved a new AI system to diagnose diabetic retinopathy, making AEYE-DS from AEYE Health the third such product on the market.

Roomasa Channa, MD, a clinician-scientist with the McPherson Eye Research Institute at the University of Wisconsin–Madison, has studied the use of AI in teenage patients with diabetes. She said she soon plans to use AI screening in federally qualified health centers to screen adults with diabetes.

Dr. Channa welcomed the latest regulatory clearance and said she hopes another Food and Drug Administration–cleared algorithm product will improve accessibility to the technology.

“It is good to see more players in the field: We need this technology to be readily available and affordable,” she said in an interview.
 

A mixed reception

Responses from physicians to this type of AI have been mixed. Some worry, for instance, that the algorithms might be programmed with unrecognized biases that could lead them to less accurately interpret images from certain patient groups. Researchers should be on the lookout out for this possibility, Dr. Channa said.

“We need more real-world studies in different settings,” she said. “We also need to keep collecting data on AI performance post approval,” like investigators do for newly approved drugs.

The first AI system to diagnose diabetic retinopathy, IDx-DR, was approved by the FDA in 2018 and rolled out in retail clinics soon after. A second system, EyeArt, gained clearance by the agency in 2020.

Adding AI algorithms into primary care practice has changed how patients with diabetes can receive a screening. It also has introduced a new way for certain medical conditions to be diagnosed in primary care.

The American Medical Association in 2021 released a new CPT code to allow clinicians to bill government and private insurers for use of these services. CPT code 92229 refers to imaging of the retina to detect disease with an automated analysis and report at the point of care.
 

Meeting a need

Health care clinics in underserved areas often do not have eye care providers onsite to conduct recommended screening exams, so AI could help patients receive screening who otherwise would not get it, Dr. Channa said.

Dr. Channa and colleagues successfully used one AI system, IDx-DR, to screen children at a pediatric diabetes clinic. Over a year, screening rates jumped from 49% to 95%.

This technology “can potentially help us in decreasing disparities in care and focusing our efforts on patients with the most severe diseases,” she said.

OSF HealthCare recently obtained an approximately $1 million grant from drug company Regeneron to expand the use of AI-based screening for diabetic retinopathy, following a successful pilot. Regeneron markets a treatment for diabetic retinopathy.

Without an AI option, recommended eye screening for patients with diabetes often falls through the cracks, according to Mark Meeker, DO, vice president of community medicine at OSF. Primary care physicians may refer patients elsewhere for their annual retinopathy screening exam.

“That often doesn’t get completed because it’s another trip, another appointment, another time away from work,” Dr. Meeker said.

All patients with diabetes should have their eyes screened each year, but between one- to two-thirds of patients nationwide do not, he said.

A member of the clinic staff takes digital pictures of the retina, almost always through undilated pupils.

If the result is normal, the patient is scheduled for another follow-up screening in a year. If early signs of diabetic retinopathy are spotted, patients are referred to an eye care specialist.

After 7 months of the pilot program, OSF had screened about 350 patients. Approximately 20% had diabetic retinopathy, according to OSF.
 

‘A huge impact’

OSF has about 66,000 patients with diabetes. About two-thirds do not receive annual screening, Dr. Meeker estimated. “This can have a huge impact on the quality of life in the coming years for our diabetic patients. It’s pretty profound.”

Eye care specialists typically treat diabetic retinopathy with lasers, surgery, or medication. For primary care clinicians, however, AI screening for retinopathy is an opportunity to emphasize how important it is to manage the disease and what its consequences can be.

AI screening is “another tool for us to use to get patients more engaged in their own care,” Dr. Meeker said. “This is probably the biggest advance in AI affecting our day-to-day interaction with patients that we’ve seen in primary care.”
 

A business opportunity, too?

The IDx-DR platform OSF is using in its clinics is owned by the company Digital Diagnostics. OSF Ventures, an investment arm of OSF HealthCare, has invested in the company, the health care system announced in August.

Other companies have had their products used in practice. In 2019, for example, Eyenuk described how its EyeArt system had been used to screen thousands of patients in Germany and in Italy.

And in 2021, Eyenuk reported that its customer base in the United States had expanded to more than 25 locations. The company credited a Centers for Medicare & Medicaid Services plan to cover CPT code 92229 with supporting this growth.

Zack Dvey-Aharon, PhD, the CEO of AEYE Health, said the company was motivated to enter this space when regulators decided that AI could be used to diagnose a condition — not just as a tool to help doctors arrive at a diagnosis.

With proper training, a person can diagnose diabetic retinopathy relatively easily if the image of the retina is of excellent quality. If image is dark or blurry, however, it’s a different story.

AI has its advantages in this scenario, according to Dr. Dvey-Aharon. “For AI, those darker, more blurry images are actually highly readable with fantastic accuracy.”
 

More to come?

The possibilities of AI in analyzing retinal images are vast.

New research shows that AI may be able to detect Alzheimer’s disease or predict a person’s risk for heart attack and stroke based on snapshots of the retina.

The retina may also shed light on kidney disease, control of blood glucose and blood pressure, hepatobiliary disease, and coronary artery calcium, according to Eric J. Topol, MD, director of Scripps Research Translational Institute in La Jolla, Calif.

Beyond retinas, interpretation of electrocardiograms (ECGs) may be another frontier for AI in primary care. In one trial, an AI-enhanced ECG reading facilitated early diagnosis of low ejection fraction, and some doctors now receive these reports routinely, Dr. Topol wrote.

The potential value of AI in medicine “extends to virtually all forms of medical images that have been assessed to date,” Dr. Topol wrote on his “Ground Truths” Substack.

Although much of the focus has been on what AI can see, researchers also are exploring what AI can do with what it hears. Early research suggests that algorithms may be able to diagnose disease by analyzing patients’ voices.

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

At a routine doctor’s visit, a member of the clinic staff takes digital pictures of a patient’s retinas.

Within seconds, an artificial intelligence (AI) algorithm determines if the patient has diabetic retinopathy, a complication of diabetes that can lead to blindness.

If they do, the physician refers the patient to an eye care specialist for further evaluation and treatment.

This scene already is playing out in primary care clinics around the United States and in other countries, and it may become more common.

Health care systems intend to expand their use of AI to screen for diabetic retinopathy in 2023, and companies are developing more algorithms for this purpose.

In May, OSF HealthCare, a network of medical facilities headquartered in Peoria, Ill., piloted an AI system to diagnose diabetic retinopathy, a condition that affects an estimated 4 million Americans. In 2023, the health care system plans to expand the technology to 34 locations.

Meanwhile, the Food and Drug Administration in November approved a new AI system to diagnose diabetic retinopathy, making AEYE-DS from AEYE Health the third such product on the market.

Roomasa Channa, MD, a clinician-scientist with the McPherson Eye Research Institute at the University of Wisconsin–Madison, has studied the use of AI in teenage patients with diabetes. She said she soon plans to use AI screening in federally qualified health centers to screen adults with diabetes.

Dr. Channa welcomed the latest regulatory clearance and said she hopes another Food and Drug Administration–cleared algorithm product will improve accessibility to the technology.

“It is good to see more players in the field: We need this technology to be readily available and affordable,” she said in an interview.
 

A mixed reception

Responses from physicians to this type of AI have been mixed. Some worry, for instance, that the algorithms might be programmed with unrecognized biases that could lead them to less accurately interpret images from certain patient groups. Researchers should be on the lookout out for this possibility, Dr. Channa said.

“We need more real-world studies in different settings,” she said. “We also need to keep collecting data on AI performance post approval,” like investigators do for newly approved drugs.

The first AI system to diagnose diabetic retinopathy, IDx-DR, was approved by the FDA in 2018 and rolled out in retail clinics soon after. A second system, EyeArt, gained clearance by the agency in 2020.

Adding AI algorithms into primary care practice has changed how patients with diabetes can receive a screening. It also has introduced a new way for certain medical conditions to be diagnosed in primary care.

The American Medical Association in 2021 released a new CPT code to allow clinicians to bill government and private insurers for use of these services. CPT code 92229 refers to imaging of the retina to detect disease with an automated analysis and report at the point of care.
 

Meeting a need

Health care clinics in underserved areas often do not have eye care providers onsite to conduct recommended screening exams, so AI could help patients receive screening who otherwise would not get it, Dr. Channa said.

Dr. Channa and colleagues successfully used one AI system, IDx-DR, to screen children at a pediatric diabetes clinic. Over a year, screening rates jumped from 49% to 95%.

This technology “can potentially help us in decreasing disparities in care and focusing our efforts on patients with the most severe diseases,” she said.

OSF HealthCare recently obtained an approximately $1 million grant from drug company Regeneron to expand the use of AI-based screening for diabetic retinopathy, following a successful pilot. Regeneron markets a treatment for diabetic retinopathy.

Without an AI option, recommended eye screening for patients with diabetes often falls through the cracks, according to Mark Meeker, DO, vice president of community medicine at OSF. Primary care physicians may refer patients elsewhere for their annual retinopathy screening exam.

“That often doesn’t get completed because it’s another trip, another appointment, another time away from work,” Dr. Meeker said.

All patients with diabetes should have their eyes screened each year, but between one- to two-thirds of patients nationwide do not, he said.

A member of the clinic staff takes digital pictures of the retina, almost always through undilated pupils.

If the result is normal, the patient is scheduled for another follow-up screening in a year. If early signs of diabetic retinopathy are spotted, patients are referred to an eye care specialist.

After 7 months of the pilot program, OSF had screened about 350 patients. Approximately 20% had diabetic retinopathy, according to OSF.
 

‘A huge impact’

OSF has about 66,000 patients with diabetes. About two-thirds do not receive annual screening, Dr. Meeker estimated. “This can have a huge impact on the quality of life in the coming years for our diabetic patients. It’s pretty profound.”

Eye care specialists typically treat diabetic retinopathy with lasers, surgery, or medication. For primary care clinicians, however, AI screening for retinopathy is an opportunity to emphasize how important it is to manage the disease and what its consequences can be.

AI screening is “another tool for us to use to get patients more engaged in their own care,” Dr. Meeker said. “This is probably the biggest advance in AI affecting our day-to-day interaction with patients that we’ve seen in primary care.”
 

A business opportunity, too?

The IDx-DR platform OSF is using in its clinics is owned by the company Digital Diagnostics. OSF Ventures, an investment arm of OSF HealthCare, has invested in the company, the health care system announced in August.

Other companies have had their products used in practice. In 2019, for example, Eyenuk described how its EyeArt system had been used to screen thousands of patients in Germany and in Italy.

And in 2021, Eyenuk reported that its customer base in the United States had expanded to more than 25 locations. The company credited a Centers for Medicare & Medicaid Services plan to cover CPT code 92229 with supporting this growth.

Zack Dvey-Aharon, PhD, the CEO of AEYE Health, said the company was motivated to enter this space when regulators decided that AI could be used to diagnose a condition — not just as a tool to help doctors arrive at a diagnosis.

With proper training, a person can diagnose diabetic retinopathy relatively easily if the image of the retina is of excellent quality. If image is dark or blurry, however, it’s a different story.

AI has its advantages in this scenario, according to Dr. Dvey-Aharon. “For AI, those darker, more blurry images are actually highly readable with fantastic accuracy.”
 

More to come?

The possibilities of AI in analyzing retinal images are vast.

New research shows that AI may be able to detect Alzheimer’s disease or predict a person’s risk for heart attack and stroke based on snapshots of the retina.

The retina may also shed light on kidney disease, control of blood glucose and blood pressure, hepatobiliary disease, and coronary artery calcium, according to Eric J. Topol, MD, director of Scripps Research Translational Institute in La Jolla, Calif.

Beyond retinas, interpretation of electrocardiograms (ECGs) may be another frontier for AI in primary care. In one trial, an AI-enhanced ECG reading facilitated early diagnosis of low ejection fraction, and some doctors now receive these reports routinely, Dr. Topol wrote.

The potential value of AI in medicine “extends to virtually all forms of medical images that have been assessed to date,” Dr. Topol wrote on his “Ground Truths” Substack.

Although much of the focus has been on what AI can see, researchers also are exploring what AI can do with what it hears. Early research suggests that algorithms may be able to diagnose disease by analyzing patients’ voices.

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