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Careful screening catches sarcomas before morcellation
VANCOUVER, B.C.– A thorough preop work-up can just about eliminate the risk of accidentally morcellating an occult uterine sarcoma, according to a prospective series of 2,824 women referred for minimally invasive myomectomy to a French university hospital from 2002 to 2013.
The message came just days before the Food and Drug Administration’s Nov. 24 advice not to use power morcellationin the majority of women undergoing hysterectomy or myomectomy for uterine fibroids because “there is no reliable method for predicting whether a woman with fibroids may have a uterine sarcoma” that morcellation could spread. The agency estimated that about 1 in 350 fibroid patients actually have an occult sarcoma.
That’s close to the 1 in 400 incidence investigators at the Lariboisière Hospital in Paris found; the difference is that the French investigators detected all but one of the seven sarcomas in their series before entering the operating room, using a heightened screening protocol. “That’s the major difference between our series and the other series that the” FDA relied on for their advice, said lead investigator and gynecologic surgeon Dr. Afshin Fazel, an assistant professor of obstetrics and gynecology at Lariboisière Hospital.
Physicians at the hospital go further than some to rule out sarcomas prior to fibroid surgery. “Every single patient with a pelvic mass gets an MRI,” as well as a clinical exam and pelvic ultrasound. “If the endometrium is thicker than 4 mm, every patient older than 40 [years old] has endometrial sampling, and if there’s bleeding, every single patient has an office hysteroscopy.” A multidisciplinary team – oncologists, radiologists, gynecologists, and surgeons – review the results and select the appropriate surgical approach, Dr. Fazel said at a meeting sponsored by AAGL.
The screening protocol caught five of the seven sarcomas before surgery. A sixth case, a ruptured uterine sarcoma, presented emergently. All seven women had open surgeries, most had a hysterectomy as their initial operation, and none were morcellated. “The take-home message is that you need all the cards in your hand” to rule out sarcomas before myomectomy. No one screening test is sufficient. Some sarcomas, for instance, don’t have the usual MRI signs; of the three sarcomas the team had detected so far in 2014 – not included in the reported series – just one was found on MRI; the other two were found by endometrial sampling. “Preoperative diagnosis is the key to preventing [accidental] morcellation,” Dr. Fazel said.
The second message is that although “1 out of 400 fibroids in our series were actually sarcomas,” the extra screening meant that “the undiagnosed rate of sarcoma was” 0.035% (or 1 in 2,824), he said.
One of the sarcoma patients was from Taiwan, another was African, and the rest were French. Their age ranged from 38 to 78 years, with a mean age 50 years; two were postmenopausal. They had heavy bleeding and pain, and two had multiple masses. The average size of the uterus was 1,136 cc, and the average size of the mass 891 cc. Four of the seven patients died within 2 years of their surgery.
Among all 2,824 women, two-thirds had minimally invasive approaches, including 743 laparoscopic, 510 hysteroscopic, and 336 vaginal procedures; 262 had uterine artery embolization, which was pioneered by Lariboisière in the late 1980s.
Dr. Fazel said he has no disclosures.
VANCOUVER, B.C.– A thorough preop work-up can just about eliminate the risk of accidentally morcellating an occult uterine sarcoma, according to a prospective series of 2,824 women referred for minimally invasive myomectomy to a French university hospital from 2002 to 2013.
The message came just days before the Food and Drug Administration’s Nov. 24 advice not to use power morcellationin the majority of women undergoing hysterectomy or myomectomy for uterine fibroids because “there is no reliable method for predicting whether a woman with fibroids may have a uterine sarcoma” that morcellation could spread. The agency estimated that about 1 in 350 fibroid patients actually have an occult sarcoma.
That’s close to the 1 in 400 incidence investigators at the Lariboisière Hospital in Paris found; the difference is that the French investigators detected all but one of the seven sarcomas in their series before entering the operating room, using a heightened screening protocol. “That’s the major difference between our series and the other series that the” FDA relied on for their advice, said lead investigator and gynecologic surgeon Dr. Afshin Fazel, an assistant professor of obstetrics and gynecology at Lariboisière Hospital.
Physicians at the hospital go further than some to rule out sarcomas prior to fibroid surgery. “Every single patient with a pelvic mass gets an MRI,” as well as a clinical exam and pelvic ultrasound. “If the endometrium is thicker than 4 mm, every patient older than 40 [years old] has endometrial sampling, and if there’s bleeding, every single patient has an office hysteroscopy.” A multidisciplinary team – oncologists, radiologists, gynecologists, and surgeons – review the results and select the appropriate surgical approach, Dr. Fazel said at a meeting sponsored by AAGL.
The screening protocol caught five of the seven sarcomas before surgery. A sixth case, a ruptured uterine sarcoma, presented emergently. All seven women had open surgeries, most had a hysterectomy as their initial operation, and none were morcellated. “The take-home message is that you need all the cards in your hand” to rule out sarcomas before myomectomy. No one screening test is sufficient. Some sarcomas, for instance, don’t have the usual MRI signs; of the three sarcomas the team had detected so far in 2014 – not included in the reported series – just one was found on MRI; the other two were found by endometrial sampling. “Preoperative diagnosis is the key to preventing [accidental] morcellation,” Dr. Fazel said.
The second message is that although “1 out of 400 fibroids in our series were actually sarcomas,” the extra screening meant that “the undiagnosed rate of sarcoma was” 0.035% (or 1 in 2,824), he said.
One of the sarcoma patients was from Taiwan, another was African, and the rest were French. Their age ranged from 38 to 78 years, with a mean age 50 years; two were postmenopausal. They had heavy bleeding and pain, and two had multiple masses. The average size of the uterus was 1,136 cc, and the average size of the mass 891 cc. Four of the seven patients died within 2 years of their surgery.
Among all 2,824 women, two-thirds had minimally invasive approaches, including 743 laparoscopic, 510 hysteroscopic, and 336 vaginal procedures; 262 had uterine artery embolization, which was pioneered by Lariboisière in the late 1980s.
Dr. Fazel said he has no disclosures.
VANCOUVER, B.C.– A thorough preop work-up can just about eliminate the risk of accidentally morcellating an occult uterine sarcoma, according to a prospective series of 2,824 women referred for minimally invasive myomectomy to a French university hospital from 2002 to 2013.
The message came just days before the Food and Drug Administration’s Nov. 24 advice not to use power morcellationin the majority of women undergoing hysterectomy or myomectomy for uterine fibroids because “there is no reliable method for predicting whether a woman with fibroids may have a uterine sarcoma” that morcellation could spread. The agency estimated that about 1 in 350 fibroid patients actually have an occult sarcoma.
That’s close to the 1 in 400 incidence investigators at the Lariboisière Hospital in Paris found; the difference is that the French investigators detected all but one of the seven sarcomas in their series before entering the operating room, using a heightened screening protocol. “That’s the major difference between our series and the other series that the” FDA relied on for their advice, said lead investigator and gynecologic surgeon Dr. Afshin Fazel, an assistant professor of obstetrics and gynecology at Lariboisière Hospital.
Physicians at the hospital go further than some to rule out sarcomas prior to fibroid surgery. “Every single patient with a pelvic mass gets an MRI,” as well as a clinical exam and pelvic ultrasound. “If the endometrium is thicker than 4 mm, every patient older than 40 [years old] has endometrial sampling, and if there’s bleeding, every single patient has an office hysteroscopy.” A multidisciplinary team – oncologists, radiologists, gynecologists, and surgeons – review the results and select the appropriate surgical approach, Dr. Fazel said at a meeting sponsored by AAGL.
The screening protocol caught five of the seven sarcomas before surgery. A sixth case, a ruptured uterine sarcoma, presented emergently. All seven women had open surgeries, most had a hysterectomy as their initial operation, and none were morcellated. “The take-home message is that you need all the cards in your hand” to rule out sarcomas before myomectomy. No one screening test is sufficient. Some sarcomas, for instance, don’t have the usual MRI signs; of the three sarcomas the team had detected so far in 2014 – not included in the reported series – just one was found on MRI; the other two were found by endometrial sampling. “Preoperative diagnosis is the key to preventing [accidental] morcellation,” Dr. Fazel said.
The second message is that although “1 out of 400 fibroids in our series were actually sarcomas,” the extra screening meant that “the undiagnosed rate of sarcoma was” 0.035% (or 1 in 2,824), he said.
One of the sarcoma patients was from Taiwan, another was African, and the rest were French. Their age ranged from 38 to 78 years, with a mean age 50 years; two were postmenopausal. They had heavy bleeding and pain, and two had multiple masses. The average size of the uterus was 1,136 cc, and the average size of the mass 891 cc. Four of the seven patients died within 2 years of their surgery.
Among all 2,824 women, two-thirds had minimally invasive approaches, including 743 laparoscopic, 510 hysteroscopic, and 336 vaginal procedures; 262 had uterine artery embolization, which was pioneered by Lariboisière in the late 1980s.
Dr. Fazel said he has no disclosures.
AT THE AAGL GLOBAL CONFERENCE
Key clinical point: It’s possible to catch most sarcomas before fibroid morcellation.
Major finding: One in 400 women with fibroids have an occult sarcoma; preoperative MRI, pelvic ultrasound, endometrial sampling, and hysteroscopy reduces the chance that they will undergo morcellation to 0.035%.
Data source: Prospective case series of 2,824 women referred for minimally invasive myomectomy to a university hospital in Paris.
Disclosures: Dr. Fazel said he has no financial conflicts.
Sentinel lymph node mapping effective for staging early endometrial cancer
MELBOURNE – Staging endometrial cancer using sentinel lymph node mapping reduces side effects for patients, and enables selection of lymph nodes for pathology that are more likely to have disease in them, an investigator reported at the biennial meeting of the International Gynecologic Cancer Society.
The procedure results in fewer lymph nodes being removed – usually two to three on each side, and no more than ten – which meant less side effects such as lymphedema, and potentially avoided the need for pelvic lymphadenectomy said Dr. Nadeem Abu-Rustum, chief of the gynecology service at Memorial Sloan Kettering Cancer Center, New York.
“One, you are removing fewer lymph nodes so there’s less radicality in surgery and less side effects; two, it makes the operating time faster, and three, you give the pathologist fewer lymph nodes but they can work on them in more depth to try to find low-volume metastases,” Dr. Abu-Rustum said in an interview.
“It’s a win-win situation for the patient.”
Dr. Abu-Rustum and colleagues at Memorial Sloan-Kettering have developed a sentinel lymph node mapping algorithm for stage I cervical or endometrial cancers.
“It is applicable for any women who has endometrial cancer where the surgeon feels that the cancer is contained, and you need staging information,” he said.
However he stressed it was not applicable in patients with obvious metastases or with abnormal lymph nodes.
“This is for normal-appearing lymph nodes, clinical stage I, and the algorithm checklist really protects you because it will exclude those patients [with abnormal lymph nodes].”
While there was ongoing debate about where to inject the dye to best identify the sentinel node, Dr. Abu-Rustum told the conference that he and his colleagues believed injecting into the cervix at the three o’clock and nine o’clock positions was the most reasonable option.
He also commented on the different dyes used, saying that while methylene blue or lymphazurin had been the traditional choice – with or without technetium-99 – the near-infrared fluorescing indocyanine green and use of a laser significantly improved accuracy of the procedure.
“Now you’re able to increase the chance of finding the lymph node from 80% to almost 100%, and finding it on the right and the left was 60%, now it’s 80%,” he said.
In another presentation, a speaker reported an overall sentinel lymph node detection rate of 92%, and a 74% rate of bilateral detection, using a combination of methylene blue, technetium-99, and indocyanine green, in 100 patients who underwent sentinel lymph node mapping for endometrial cancer.
Among the 10 patients in the prospective study who had metastatic disease, 9 had a positive sentinel lymph node. The sentinel node was found to be the only positive node in 66% of these patients, suggesting that this was the most clinically relevant node. There was one case of a false negative for a sentinel lymph node, reported Dr. Jeffrey How, obstetrics and gynecology resident at the McGill University Health Centre, Montreal.
The addition of indocyanine green increased the precision of in vivo detection of sentinel lymph nodes, aiding detection of the highest-yield lymph nodes for pathology, he said.
No conflicts of interest were declared.
MELBOURNE – Staging endometrial cancer using sentinel lymph node mapping reduces side effects for patients, and enables selection of lymph nodes for pathology that are more likely to have disease in them, an investigator reported at the biennial meeting of the International Gynecologic Cancer Society.
The procedure results in fewer lymph nodes being removed – usually two to three on each side, and no more than ten – which meant less side effects such as lymphedema, and potentially avoided the need for pelvic lymphadenectomy said Dr. Nadeem Abu-Rustum, chief of the gynecology service at Memorial Sloan Kettering Cancer Center, New York.
“One, you are removing fewer lymph nodes so there’s less radicality in surgery and less side effects; two, it makes the operating time faster, and three, you give the pathologist fewer lymph nodes but they can work on them in more depth to try to find low-volume metastases,” Dr. Abu-Rustum said in an interview.
“It’s a win-win situation for the patient.”
Dr. Abu-Rustum and colleagues at Memorial Sloan-Kettering have developed a sentinel lymph node mapping algorithm for stage I cervical or endometrial cancers.
“It is applicable for any women who has endometrial cancer where the surgeon feels that the cancer is contained, and you need staging information,” he said.
However he stressed it was not applicable in patients with obvious metastases or with abnormal lymph nodes.
“This is for normal-appearing lymph nodes, clinical stage I, and the algorithm checklist really protects you because it will exclude those patients [with abnormal lymph nodes].”
While there was ongoing debate about where to inject the dye to best identify the sentinel node, Dr. Abu-Rustum told the conference that he and his colleagues believed injecting into the cervix at the three o’clock and nine o’clock positions was the most reasonable option.
He also commented on the different dyes used, saying that while methylene blue or lymphazurin had been the traditional choice – with or without technetium-99 – the near-infrared fluorescing indocyanine green and use of a laser significantly improved accuracy of the procedure.
“Now you’re able to increase the chance of finding the lymph node from 80% to almost 100%, and finding it on the right and the left was 60%, now it’s 80%,” he said.
In another presentation, a speaker reported an overall sentinel lymph node detection rate of 92%, and a 74% rate of bilateral detection, using a combination of methylene blue, technetium-99, and indocyanine green, in 100 patients who underwent sentinel lymph node mapping for endometrial cancer.
Among the 10 patients in the prospective study who had metastatic disease, 9 had a positive sentinel lymph node. The sentinel node was found to be the only positive node in 66% of these patients, suggesting that this was the most clinically relevant node. There was one case of a false negative for a sentinel lymph node, reported Dr. Jeffrey How, obstetrics and gynecology resident at the McGill University Health Centre, Montreal.
The addition of indocyanine green increased the precision of in vivo detection of sentinel lymph nodes, aiding detection of the highest-yield lymph nodes for pathology, he said.
No conflicts of interest were declared.
MELBOURNE – Staging endometrial cancer using sentinel lymph node mapping reduces side effects for patients, and enables selection of lymph nodes for pathology that are more likely to have disease in them, an investigator reported at the biennial meeting of the International Gynecologic Cancer Society.
The procedure results in fewer lymph nodes being removed – usually two to three on each side, and no more than ten – which meant less side effects such as lymphedema, and potentially avoided the need for pelvic lymphadenectomy said Dr. Nadeem Abu-Rustum, chief of the gynecology service at Memorial Sloan Kettering Cancer Center, New York.
“One, you are removing fewer lymph nodes so there’s less radicality in surgery and less side effects; two, it makes the operating time faster, and three, you give the pathologist fewer lymph nodes but they can work on them in more depth to try to find low-volume metastases,” Dr. Abu-Rustum said in an interview.
“It’s a win-win situation for the patient.”
Dr. Abu-Rustum and colleagues at Memorial Sloan-Kettering have developed a sentinel lymph node mapping algorithm for stage I cervical or endometrial cancers.
“It is applicable for any women who has endometrial cancer where the surgeon feels that the cancer is contained, and you need staging information,” he said.
However he stressed it was not applicable in patients with obvious metastases or with abnormal lymph nodes.
“This is for normal-appearing lymph nodes, clinical stage I, and the algorithm checklist really protects you because it will exclude those patients [with abnormal lymph nodes].”
While there was ongoing debate about where to inject the dye to best identify the sentinel node, Dr. Abu-Rustum told the conference that he and his colleagues believed injecting into the cervix at the three o’clock and nine o’clock positions was the most reasonable option.
He also commented on the different dyes used, saying that while methylene blue or lymphazurin had been the traditional choice – with or without technetium-99 – the near-infrared fluorescing indocyanine green and use of a laser significantly improved accuracy of the procedure.
“Now you’re able to increase the chance of finding the lymph node from 80% to almost 100%, and finding it on the right and the left was 60%, now it’s 80%,” he said.
In another presentation, a speaker reported an overall sentinel lymph node detection rate of 92%, and a 74% rate of bilateral detection, using a combination of methylene blue, technetium-99, and indocyanine green, in 100 patients who underwent sentinel lymph node mapping for endometrial cancer.
Among the 10 patients in the prospective study who had metastatic disease, 9 had a positive sentinel lymph node. The sentinel node was found to be the only positive node in 66% of these patients, suggesting that this was the most clinically relevant node. There was one case of a false negative for a sentinel lymph node, reported Dr. Jeffrey How, obstetrics and gynecology resident at the McGill University Health Centre, Montreal.
The addition of indocyanine green increased the precision of in vivo detection of sentinel lymph nodes, aiding detection of the highest-yield lymph nodes for pathology, he said.
No conflicts of interest were declared.
AT IGCS 2014
USPSTF: Not enough evidence for vitamin D screening
The U.S. Preventive Services Task Force made no recommendation for or against primary care physicians screening asymptomatic adults for vitamin D deficiency, because the current evidence is insufficient to adequately assess the benefits and harms of doing so, according to a report published online Nov. 24 in Annals of Internal Medicine.
The USPSTF reviewed the evidence on screening and treatment for vitamin D deficiency, because the condition may contribute to fractures, falls, functional limitations, cancer, diabetes, cardiovascular disease, depression, and excess mortality.
In addition, testing of vitamin D levels has increased markedly in recent years. One national survey showed the annual rate of outpatient visits with a diagnosis code for vitamin D deficiency more than tripled between 2008 and 2010, and a 2009 survey of clinical laboratories reported that the testing increased by at least half in the space of just 1 year, said Dr. Michael L. LeFevre, chair of the task force and professor of family medicine at the University of Missouri, Columbia, and his associates.
The organization is a voluntary expert group tasked with making recommendations about specific preventive care services, devices, and medications for asymptomatic people, with a view to improving Americans’ general health.
The task force reviewed the evidence presented in 16 randomized trials, as well as nested case-control studies using data from the Women’s Health Initiative. They found that no study has directly examined the effects of vitamin D screening, compared with no screening, on clinical outcomes. There isn’t even any consensus about what constitutes vitamin D deficiency, or what the optimal circulating level of 25-hydroxyvitamin D is.
Many testing methods are available, including competitive protein binding, immunoassay, high-performance liquid chromatography, and mass spectrometry. But the sensitivity and specificity of these tests remains unknown, because there is no internationally recognized reference standard. Moreover, the USPSTF found that test results vary not just by which test is used, but even between laboratories using the same test.
Symptomatic vitamin D deficiency is known to affect health adversely, as is asymptomatic vitamin D deficiency in certain patient populations. But the evidence that deficiency contributes to adverse health outcomes in asymptomatic adults is inadequate. The evidence that screening for such deficiency and treating “low” vitamin D levels prevents adverse outcomes or simply improves general health also is inadequate, Dr. LeFevre and his associates said.
Similarly, no studies to date have directly examined possible harms of screening for and treating vitamin D deficiency. Although there are concerns that vitamin D supplements may lead to hypercalcemia, kidney stones, or gastrointestinal symptoms, there is no evidence of such effects in the asymptomatic patient population.
The USPSTF concluded that the harms of screening for and treating vitamin D deficiency are likely “small to none,” but it still is not possible to determine whether the benefits outweigh even that small amount of harm.
At present, no national primary care professional organization recommends screening of the general adult population for vitamin D deficiency. The American Academy of Family Physicians, the Endocrine Society, the American College of Obstetricians and Gynecologists, the American Geriatrics Society, and the National Osteoporosis Foundation all recommend screening for patients at risk for fractures or falls only. The Institute of Medicine has no formal guidelines regarding vitamin D screening, Dr. LeFevre and his associates noted.
The USPSTF summary report and the review of the evidence are available at www.uspreventiveservicestaskforce.org.
The USPSTF is focused on providing a firm evidential base for early detection and prevention of disease, noted Dr. Robert P. Heaney and Dr. Laura A. G. Armas in an accompanying editorial. But perhaps clinicians should have a different focus: full nutrient repletion in their patients, to optimize their health.
A strict disease-avoidance approach is too simplistic with regard to micronutrients, because they don’t directly cause the effects often attributed to them. Instead, when supplies of micronutrients are inadequate, cellular responses are blunted, Dr. Heaney and Dr. Armas noted. That is dysfunction, but not clinically manifest disease.
Such dysfunction may indeed lead ultimately to various diseases, they added, but disease prevention is a dull tool for discerning the defect. And a disease-prevention approach clearly doesn’t show whether there is enough of the nutrient present to enable appropriate physiological responses.
Dr. Heaney and Dr. Armas are at Creighton University in Omaha, Neb. Their remarks are drawn from an editorial accompanying the USPSTF reports.
The USPSTF is focused on providing a firm evidential base for early detection and prevention of disease, noted Dr. Robert P. Heaney and Dr. Laura A. G. Armas in an accompanying editorial. But perhaps clinicians should have a different focus: full nutrient repletion in their patients, to optimize their health.
A strict disease-avoidance approach is too simplistic with regard to micronutrients, because they don’t directly cause the effects often attributed to them. Instead, when supplies of micronutrients are inadequate, cellular responses are blunted, Dr. Heaney and Dr. Armas noted. That is dysfunction, but not clinically manifest disease.
Such dysfunction may indeed lead ultimately to various diseases, they added, but disease prevention is a dull tool for discerning the defect. And a disease-prevention approach clearly doesn’t show whether there is enough of the nutrient present to enable appropriate physiological responses.
Dr. Heaney and Dr. Armas are at Creighton University in Omaha, Neb. Their remarks are drawn from an editorial accompanying the USPSTF reports.
The USPSTF is focused on providing a firm evidential base for early detection and prevention of disease, noted Dr. Robert P. Heaney and Dr. Laura A. G. Armas in an accompanying editorial. But perhaps clinicians should have a different focus: full nutrient repletion in their patients, to optimize their health.
A strict disease-avoidance approach is too simplistic with regard to micronutrients, because they don’t directly cause the effects often attributed to them. Instead, when supplies of micronutrients are inadequate, cellular responses are blunted, Dr. Heaney and Dr. Armas noted. That is dysfunction, but not clinically manifest disease.
Such dysfunction may indeed lead ultimately to various diseases, they added, but disease prevention is a dull tool for discerning the defect. And a disease-prevention approach clearly doesn’t show whether there is enough of the nutrient present to enable appropriate physiological responses.
Dr. Heaney and Dr. Armas are at Creighton University in Omaha, Neb. Their remarks are drawn from an editorial accompanying the USPSTF reports.
The U.S. Preventive Services Task Force made no recommendation for or against primary care physicians screening asymptomatic adults for vitamin D deficiency, because the current evidence is insufficient to adequately assess the benefits and harms of doing so, according to a report published online Nov. 24 in Annals of Internal Medicine.
The USPSTF reviewed the evidence on screening and treatment for vitamin D deficiency, because the condition may contribute to fractures, falls, functional limitations, cancer, diabetes, cardiovascular disease, depression, and excess mortality.
In addition, testing of vitamin D levels has increased markedly in recent years. One national survey showed the annual rate of outpatient visits with a diagnosis code for vitamin D deficiency more than tripled between 2008 and 2010, and a 2009 survey of clinical laboratories reported that the testing increased by at least half in the space of just 1 year, said Dr. Michael L. LeFevre, chair of the task force and professor of family medicine at the University of Missouri, Columbia, and his associates.
The organization is a voluntary expert group tasked with making recommendations about specific preventive care services, devices, and medications for asymptomatic people, with a view to improving Americans’ general health.
The task force reviewed the evidence presented in 16 randomized trials, as well as nested case-control studies using data from the Women’s Health Initiative. They found that no study has directly examined the effects of vitamin D screening, compared with no screening, on clinical outcomes. There isn’t even any consensus about what constitutes vitamin D deficiency, or what the optimal circulating level of 25-hydroxyvitamin D is.
Many testing methods are available, including competitive protein binding, immunoassay, high-performance liquid chromatography, and mass spectrometry. But the sensitivity and specificity of these tests remains unknown, because there is no internationally recognized reference standard. Moreover, the USPSTF found that test results vary not just by which test is used, but even between laboratories using the same test.
Symptomatic vitamin D deficiency is known to affect health adversely, as is asymptomatic vitamin D deficiency in certain patient populations. But the evidence that deficiency contributes to adverse health outcomes in asymptomatic adults is inadequate. The evidence that screening for such deficiency and treating “low” vitamin D levels prevents adverse outcomes or simply improves general health also is inadequate, Dr. LeFevre and his associates said.
Similarly, no studies to date have directly examined possible harms of screening for and treating vitamin D deficiency. Although there are concerns that vitamin D supplements may lead to hypercalcemia, kidney stones, or gastrointestinal symptoms, there is no evidence of such effects in the asymptomatic patient population.
The USPSTF concluded that the harms of screening for and treating vitamin D deficiency are likely “small to none,” but it still is not possible to determine whether the benefits outweigh even that small amount of harm.
At present, no national primary care professional organization recommends screening of the general adult population for vitamin D deficiency. The American Academy of Family Physicians, the Endocrine Society, the American College of Obstetricians and Gynecologists, the American Geriatrics Society, and the National Osteoporosis Foundation all recommend screening for patients at risk for fractures or falls only. The Institute of Medicine has no formal guidelines regarding vitamin D screening, Dr. LeFevre and his associates noted.
The USPSTF summary report and the review of the evidence are available at www.uspreventiveservicestaskforce.org.
The U.S. Preventive Services Task Force made no recommendation for or against primary care physicians screening asymptomatic adults for vitamin D deficiency, because the current evidence is insufficient to adequately assess the benefits and harms of doing so, according to a report published online Nov. 24 in Annals of Internal Medicine.
The USPSTF reviewed the evidence on screening and treatment for vitamin D deficiency, because the condition may contribute to fractures, falls, functional limitations, cancer, diabetes, cardiovascular disease, depression, and excess mortality.
In addition, testing of vitamin D levels has increased markedly in recent years. One national survey showed the annual rate of outpatient visits with a diagnosis code for vitamin D deficiency more than tripled between 2008 and 2010, and a 2009 survey of clinical laboratories reported that the testing increased by at least half in the space of just 1 year, said Dr. Michael L. LeFevre, chair of the task force and professor of family medicine at the University of Missouri, Columbia, and his associates.
The organization is a voluntary expert group tasked with making recommendations about specific preventive care services, devices, and medications for asymptomatic people, with a view to improving Americans’ general health.
The task force reviewed the evidence presented in 16 randomized trials, as well as nested case-control studies using data from the Women’s Health Initiative. They found that no study has directly examined the effects of vitamin D screening, compared with no screening, on clinical outcomes. There isn’t even any consensus about what constitutes vitamin D deficiency, or what the optimal circulating level of 25-hydroxyvitamin D is.
Many testing methods are available, including competitive protein binding, immunoassay, high-performance liquid chromatography, and mass spectrometry. But the sensitivity and specificity of these tests remains unknown, because there is no internationally recognized reference standard. Moreover, the USPSTF found that test results vary not just by which test is used, but even between laboratories using the same test.
Symptomatic vitamin D deficiency is known to affect health adversely, as is asymptomatic vitamin D deficiency in certain patient populations. But the evidence that deficiency contributes to adverse health outcomes in asymptomatic adults is inadequate. The evidence that screening for such deficiency and treating “low” vitamin D levels prevents adverse outcomes or simply improves general health also is inadequate, Dr. LeFevre and his associates said.
Similarly, no studies to date have directly examined possible harms of screening for and treating vitamin D deficiency. Although there are concerns that vitamin D supplements may lead to hypercalcemia, kidney stones, or gastrointestinal symptoms, there is no evidence of such effects in the asymptomatic patient population.
The USPSTF concluded that the harms of screening for and treating vitamin D deficiency are likely “small to none,” but it still is not possible to determine whether the benefits outweigh even that small amount of harm.
At present, no national primary care professional organization recommends screening of the general adult population for vitamin D deficiency. The American Academy of Family Physicians, the Endocrine Society, the American College of Obstetricians and Gynecologists, the American Geriatrics Society, and the National Osteoporosis Foundation all recommend screening for patients at risk for fractures or falls only. The Institute of Medicine has no formal guidelines regarding vitamin D screening, Dr. LeFevre and his associates noted.
The USPSTF summary report and the review of the evidence are available at www.uspreventiveservicestaskforce.org.
FROM ANNALS OF INTERNAL MEDICINE
Key clinical point: The USPSTF makes no recommendation for or against screening and treating asymptomatic adults for vitamin D deficiency, because the evidence regarding the benefits and harms is insufficient.
Major finding: Testing of vitamin D levels has increased markedly, with one national survey showing the annual rate of outpatient visits with a diagnosis code for vitamin D deficiency more than tripled between 2008 and 2010, and a 2009 survey of clinical laboratories reporting that the testing increased by at least half in the space of just 1 year.
Data source: A detailed review of the evidence and an expert consensus regarding screening asymptomatic adults for vitamin D deficiency to prevent fractures, cancer, CVD, and other adverse outcomes.
Disclosures: The USPSTF is an independent, voluntary group supported by the U.S. Agency for Healthcare Research and Quality to improve Americans’ health by making recommendations concerning preventive services such as screenings and medications. Dr. LeFevre and his associates reported having no relevant financial disclosures.
Multiple biopsies increase sensitivity of colposcopy
Physicians should consider collecting additional biopsies during colposcopy if multiple lesions are present, according to the authors of a study finding the practice increases the detection of high-grade squamous intraepithelial lesions.
An observational study of 690 women referred to colposcopy after abnormal cervical cancer screening results found sensitivity for detecting high-grade squamous intraepithelial lesions (HSILs) increased from 60.6% with a single biopsy to 85.6% with two biopsies and 95.6% with three biopsies.
“The incremental benefit of taking multiple biopsies was present regardless of referral cytology, HPV-16 status, and colposcopic impression; for example, even when there was a high-grade colposcopic impression, a single biopsy did not identify a prevalent HSIL in 35% of the women,” wrote Dr. Nicolas Wentzensen of the National Cancer Institute, Bethesda, Md., and colleagues.
Researchers found an increase in sensitivity of multiple biopsies across a range of subgroups, although the additional biopsies found more disease among women with more severe referral cytology, higher-risk HPV status, and higher-risk colposcopic impression, according to the study, published online Nov. 24 in the Journal of Clinical Oncology [doi:10.1200/JCO.2014.55.9948].
Physicians should consider collecting additional biopsies during colposcopy if multiple lesions are present, according to the authors of a study finding the practice increases the detection of high-grade squamous intraepithelial lesions.
An observational study of 690 women referred to colposcopy after abnormal cervical cancer screening results found sensitivity for detecting high-grade squamous intraepithelial lesions (HSILs) increased from 60.6% with a single biopsy to 85.6% with two biopsies and 95.6% with three biopsies.
“The incremental benefit of taking multiple biopsies was present regardless of referral cytology, HPV-16 status, and colposcopic impression; for example, even when there was a high-grade colposcopic impression, a single biopsy did not identify a prevalent HSIL in 35% of the women,” wrote Dr. Nicolas Wentzensen of the National Cancer Institute, Bethesda, Md., and colleagues.
Researchers found an increase in sensitivity of multiple biopsies across a range of subgroups, although the additional biopsies found more disease among women with more severe referral cytology, higher-risk HPV status, and higher-risk colposcopic impression, according to the study, published online Nov. 24 in the Journal of Clinical Oncology [doi:10.1200/JCO.2014.55.9948].
Physicians should consider collecting additional biopsies during colposcopy if multiple lesions are present, according to the authors of a study finding the practice increases the detection of high-grade squamous intraepithelial lesions.
An observational study of 690 women referred to colposcopy after abnormal cervical cancer screening results found sensitivity for detecting high-grade squamous intraepithelial lesions (HSILs) increased from 60.6% with a single biopsy to 85.6% with two biopsies and 95.6% with three biopsies.
“The incremental benefit of taking multiple biopsies was present regardless of referral cytology, HPV-16 status, and colposcopic impression; for example, even when there was a high-grade colposcopic impression, a single biopsy did not identify a prevalent HSIL in 35% of the women,” wrote Dr. Nicolas Wentzensen of the National Cancer Institute, Bethesda, Md., and colleagues.
Researchers found an increase in sensitivity of multiple biopsies across a range of subgroups, although the additional biopsies found more disease among women with more severe referral cytology, higher-risk HPV status, and higher-risk colposcopic impression, according to the study, published online Nov. 24 in the Journal of Clinical Oncology [doi:10.1200/JCO.2014.55.9948].
FROM THE JOURNAL OF CLINICAL ONCOLOGY
Key clinical point: Collecting additional lesion-directed biopsies during colposcopy significantly increases the sensitivity and detection of high-grade squamous intraepithelial lesions.
Major finding: Three biopsies increases the sensitivity of HSIL detection to 95.6%.
Data source: Observational study of 690 women undergoing colposcopy for abnormal cytology.
Disclosures: The study was supported by the Intramural Research Program of the National Cancer Institute.
FDA warns against laparoscopic power morcellation
The laparoscopic power morcellator, in wide use for years, should not be used in the “vast majority” of women undergoing a hysterectomy or myomectomy, the Food and Drug Administration announced.
The updated safety communication regarding the use of laparoscopic power morcellators to treat uterine fibroids includes an Immediately in Effect guidance to manufacturers of the devices that the labels should include “specific safety statements” in the form of a boxed warning and two contraindications on proper usage.
“The FDA’s primary concern is the safety and well-being of patients and taking these steps will help the agency’s safety recommendations to be implemented as quickly as possible,” Dr. William Maisel, deputy director for science and chief scientist at the FDA’s Center for Devices and Radiological Health, said in a statement. “Updating the device label with a boxed warning and contraindications will provide clinicians and patients with critical information about the risk of spreading cancerous tissue when these procedures are performed.”
According to the FDA announcement, the boxed warning on future labels should say, “Uterine tissue may contain unsuspected cancer. The use of laparoscopic power morcellators during fibroid surgery may spread cancer and decrease the long-term survival of patients. This information should be shared with patients when considering surgery with the use of these devices.”
The first of the two contraindications, both of which also would be included on all future laparoscopic power morcellator labels, warns against using the devices for removal of uterine tissue that possibly contains fibroids in patients who are perimenopausal or postmenopausal, and candidates for en bloc tissue removal through the vagina or minilaparotomy incision, as these groups of women “represent the majority of women with fibroids who undergo hysterectomy and myomectomy.” The second contraindication cautions against using laparoscopic power morcellators “in gynecologic surgery in which the tissue to be morcellated is known or suspected to be cancerous.”
“The FDA strongly encourages doctors to inform their patients of the risk of spreading unsuspected cancer from the use of these devices in fibroid surgery and discuss the benefits and risks associated with all treatment options,” Dr. Maisel said in a statement.
This announcement appears to be stronger than the previous statement, “perhaps geared to those select few who have not ceased using the laparoscopic power morcellator,” Dr. David Jaspan, chairman of the department of obstetrics and gynecology at Einstein Medical Center, Philadelphia, said in an interview. “Gynecologic surgeons must collaborate with medical engineers to create equipment that will enable women to once again enjoy the advantages of minimally invasive techniques that we have worked so hard to develop,” he added. “We have seen an increased number of laparotomies, and thus increased women’s risk for postoperative morbidity. I am hopeful that novel approaches will soon be made available for our patients.”
This latest set of warnings is an update of guidelines originally issued by the FDA in April 2014, in which the federal agency stated that use of laparoscopic power morcellators for hysterectomy or myomectomy can significantly increase the risk of spreading “unsuspected” cancer found in the tissue of the uterine wall. A quantitative analysis released by the FDA estimated that 1 in 350 women who undergo hysterectomy or myomectomy for fibroids is found to have an unsuspected uterine sarcoma.
The agency announced that its Immediately in Effect (IIE) guidance applies to all new and currently marketed laparoscopic power morcellators used for “general and specific gynecological indications.”
The campaign to highlight the risks of morcellators has been led by Dr. Hooman Noorchashm, a cardiothoracic surgeon, and his wife, Dr. Amy Reed, an anesthesiologist who was diagnosed with stage 4 leiomyosarcoma after undergoing a hysterectomy with morcellation at the age of 40 for what was thought to be benign fibroids. Dr. Noorchashm and Dr. Reed have called for a ban on the use of laparoscopic power morcellators.
Asked to comment on the FDA announcement, Dr. Noorchashm said the decision represents “ a massive and historic regulatory failure on the part of FDA Center for Devices and Radiological Health.”
In an interview, he added, “The evidence of avoidable deadly harm was beyond doubt in this case. But the FDA CDRH could not bring itself to fully protect those at risk. This demonstrates that the FDA is a ‘captured agency’ with more loyalty to corporate and industry interests than to patient safety. I think the United States Congress needs to conduct a hearing and overhaul and clarify the FDA’s overall mission. And in particular medical device safety legislation. Corporations have power, people don’t. And without cogent federal government, lives are left exposed.”
--Elizabeth Mechcatie contributed to this article.
*This article was updated November 24, 2014.
The laparoscopic power morcellator, in wide use for years, should not be used in the “vast majority” of women undergoing a hysterectomy or myomectomy, the Food and Drug Administration announced.
The updated safety communication regarding the use of laparoscopic power morcellators to treat uterine fibroids includes an Immediately in Effect guidance to manufacturers of the devices that the labels should include “specific safety statements” in the form of a boxed warning and two contraindications on proper usage.
“The FDA’s primary concern is the safety and well-being of patients and taking these steps will help the agency’s safety recommendations to be implemented as quickly as possible,” Dr. William Maisel, deputy director for science and chief scientist at the FDA’s Center for Devices and Radiological Health, said in a statement. “Updating the device label with a boxed warning and contraindications will provide clinicians and patients with critical information about the risk of spreading cancerous tissue when these procedures are performed.”
According to the FDA announcement, the boxed warning on future labels should say, “Uterine tissue may contain unsuspected cancer. The use of laparoscopic power morcellators during fibroid surgery may spread cancer and decrease the long-term survival of patients. This information should be shared with patients when considering surgery with the use of these devices.”
The first of the two contraindications, both of which also would be included on all future laparoscopic power morcellator labels, warns against using the devices for removal of uterine tissue that possibly contains fibroids in patients who are perimenopausal or postmenopausal, and candidates for en bloc tissue removal through the vagina or minilaparotomy incision, as these groups of women “represent the majority of women with fibroids who undergo hysterectomy and myomectomy.” The second contraindication cautions against using laparoscopic power morcellators “in gynecologic surgery in which the tissue to be morcellated is known or suspected to be cancerous.”
“The FDA strongly encourages doctors to inform their patients of the risk of spreading unsuspected cancer from the use of these devices in fibroid surgery and discuss the benefits and risks associated with all treatment options,” Dr. Maisel said in a statement.
This announcement appears to be stronger than the previous statement, “perhaps geared to those select few who have not ceased using the laparoscopic power morcellator,” Dr. David Jaspan, chairman of the department of obstetrics and gynecology at Einstein Medical Center, Philadelphia, said in an interview. “Gynecologic surgeons must collaborate with medical engineers to create equipment that will enable women to once again enjoy the advantages of minimally invasive techniques that we have worked so hard to develop,” he added. “We have seen an increased number of laparotomies, and thus increased women’s risk for postoperative morbidity. I am hopeful that novel approaches will soon be made available for our patients.”
This latest set of warnings is an update of guidelines originally issued by the FDA in April 2014, in which the federal agency stated that use of laparoscopic power morcellators for hysterectomy or myomectomy can significantly increase the risk of spreading “unsuspected” cancer found in the tissue of the uterine wall. A quantitative analysis released by the FDA estimated that 1 in 350 women who undergo hysterectomy or myomectomy for fibroids is found to have an unsuspected uterine sarcoma.
The agency announced that its Immediately in Effect (IIE) guidance applies to all new and currently marketed laparoscopic power morcellators used for “general and specific gynecological indications.”
The campaign to highlight the risks of morcellators has been led by Dr. Hooman Noorchashm, a cardiothoracic surgeon, and his wife, Dr. Amy Reed, an anesthesiologist who was diagnosed with stage 4 leiomyosarcoma after undergoing a hysterectomy with morcellation at the age of 40 for what was thought to be benign fibroids. Dr. Noorchashm and Dr. Reed have called for a ban on the use of laparoscopic power morcellators.
Asked to comment on the FDA announcement, Dr. Noorchashm said the decision represents “ a massive and historic regulatory failure on the part of FDA Center for Devices and Radiological Health.”
In an interview, he added, “The evidence of avoidable deadly harm was beyond doubt in this case. But the FDA CDRH could not bring itself to fully protect those at risk. This demonstrates that the FDA is a ‘captured agency’ with more loyalty to corporate and industry interests than to patient safety. I think the United States Congress needs to conduct a hearing and overhaul and clarify the FDA’s overall mission. And in particular medical device safety legislation. Corporations have power, people don’t. And without cogent federal government, lives are left exposed.”
--Elizabeth Mechcatie contributed to this article.
*This article was updated November 24, 2014.
The laparoscopic power morcellator, in wide use for years, should not be used in the “vast majority” of women undergoing a hysterectomy or myomectomy, the Food and Drug Administration announced.
The updated safety communication regarding the use of laparoscopic power morcellators to treat uterine fibroids includes an Immediately in Effect guidance to manufacturers of the devices that the labels should include “specific safety statements” in the form of a boxed warning and two contraindications on proper usage.
“The FDA’s primary concern is the safety and well-being of patients and taking these steps will help the agency’s safety recommendations to be implemented as quickly as possible,” Dr. William Maisel, deputy director for science and chief scientist at the FDA’s Center for Devices and Radiological Health, said in a statement. “Updating the device label with a boxed warning and contraindications will provide clinicians and patients with critical information about the risk of spreading cancerous tissue when these procedures are performed.”
According to the FDA announcement, the boxed warning on future labels should say, “Uterine tissue may contain unsuspected cancer. The use of laparoscopic power morcellators during fibroid surgery may spread cancer and decrease the long-term survival of patients. This information should be shared with patients when considering surgery with the use of these devices.”
The first of the two contraindications, both of which also would be included on all future laparoscopic power morcellator labels, warns against using the devices for removal of uterine tissue that possibly contains fibroids in patients who are perimenopausal or postmenopausal, and candidates for en bloc tissue removal through the vagina or minilaparotomy incision, as these groups of women “represent the majority of women with fibroids who undergo hysterectomy and myomectomy.” The second contraindication cautions against using laparoscopic power morcellators “in gynecologic surgery in which the tissue to be morcellated is known or suspected to be cancerous.”
“The FDA strongly encourages doctors to inform their patients of the risk of spreading unsuspected cancer from the use of these devices in fibroid surgery and discuss the benefits and risks associated with all treatment options,” Dr. Maisel said in a statement.
This announcement appears to be stronger than the previous statement, “perhaps geared to those select few who have not ceased using the laparoscopic power morcellator,” Dr. David Jaspan, chairman of the department of obstetrics and gynecology at Einstein Medical Center, Philadelphia, said in an interview. “Gynecologic surgeons must collaborate with medical engineers to create equipment that will enable women to once again enjoy the advantages of minimally invasive techniques that we have worked so hard to develop,” he added. “We have seen an increased number of laparotomies, and thus increased women’s risk for postoperative morbidity. I am hopeful that novel approaches will soon be made available for our patients.”
This latest set of warnings is an update of guidelines originally issued by the FDA in April 2014, in which the federal agency stated that use of laparoscopic power morcellators for hysterectomy or myomectomy can significantly increase the risk of spreading “unsuspected” cancer found in the tissue of the uterine wall. A quantitative analysis released by the FDA estimated that 1 in 350 women who undergo hysterectomy or myomectomy for fibroids is found to have an unsuspected uterine sarcoma.
The agency announced that its Immediately in Effect (IIE) guidance applies to all new and currently marketed laparoscopic power morcellators used for “general and specific gynecological indications.”
The campaign to highlight the risks of morcellators has been led by Dr. Hooman Noorchashm, a cardiothoracic surgeon, and his wife, Dr. Amy Reed, an anesthesiologist who was diagnosed with stage 4 leiomyosarcoma after undergoing a hysterectomy with morcellation at the age of 40 for what was thought to be benign fibroids. Dr. Noorchashm and Dr. Reed have called for a ban on the use of laparoscopic power morcellators.
Asked to comment on the FDA announcement, Dr. Noorchashm said the decision represents “ a massive and historic regulatory failure on the part of FDA Center for Devices and Radiological Health.”
In an interview, he added, “The evidence of avoidable deadly harm was beyond doubt in this case. But the FDA CDRH could not bring itself to fully protect those at risk. This demonstrates that the FDA is a ‘captured agency’ with more loyalty to corporate and industry interests than to patient safety. I think the United States Congress needs to conduct a hearing and overhaul and clarify the FDA’s overall mission. And in particular medical device safety legislation. Corporations have power, people don’t. And without cogent federal government, lives are left exposed.”
--Elizabeth Mechcatie contributed to this article.
*This article was updated November 24, 2014.
Try testosterone only in women with hypoactive sexual desire
Testosterone supplementation is not recommended for women, unless they have a clinical diagnosis of hypoactive sexual desire disorder, a joint task force led by the Endocrine Society has determined.
While a number of studies have shown that testosterone supplementation helps improve sexual desire, cognition, and other outcomes, most are either too small, too short, or confounded by other factors to provide irrefutable evidence of the hormone’s benefit for any indication other than hypoactive sexual desire disorder (HSDD), Dr. Margaret E. Wierman and her colleagues wrote in the Journal of Clinical Endocrinology and Metabolism (J. Clin. Endocrinol. Metab. 2014;99:3489-510).
A trial of testosterone is only appropriate for postmenopausal women with a diagnosed HSDD, wrote the task force, which also noted that libido and response improvements don’t necessarily correlate with testosterone serum levels. If there’s no clinical response after a 6-month trial, the hormone should be discontinued.
The hormone-health connection is clearly important to women, and many have already done Internet research on the topic, said Dr. Margery Gass, executive director of the North American Menopause Society. A Google query for “hormones to control aging” turned up 9.5 million results, she said.
Although NAMS was not involved in creating the new clinical guideline, the society supports it, she said in an interview.
“The Endocrine Society has published an excellent set of guidelines on the use of androgen therapy in women. These guidelines are in harmony with NAMS’ comments on the use of testosterone and dehydroepiandrosterones,” included in the group’s clinical practice guideline for the care of midlife women (Menopause 2014;21:1038-62). That paper also recommends a trial of testosterone therapy “in carefully selected postmenopausal women with female sexual interest/arousal disorder and no other etiology for their sexual problems.”
Dr. Gass continued, “I encourage clinicians to use both publications to help women understand the misinformation about testosterone and other androgens that they are seeing on the Internet.”
Dr. Wierman, chief of endocrinology at the University of Colorado, Aurora, led the task force, composed of representatives from the American Society for Reproductive Medicine, the American Congress of Obstetricians and Gynecologists, the European Society of Endocrinology, and the International Menopause Society. Together, they reviewed the extant literature and, in addition, commissioned meta-analyses to examine the issue of androgen supplementation in premenopausal and postmenopausal women – either healthy or with specific conditions. Evidence was graded as level 1 (strong) or level 2 (weak).
The group considered androgen supplementation for a number of indications: infertility; sexual dysfunction; cognition; cardiovascular, metabolic, and bone health; and general well-being. It found little strong data to support the practice in any of these except HSDD.
As a basic tenet, the task force agreed that androgen testing for most women is inaccurate, and thus virtually incapable of providing useful diagnostic information. Testosterone levels vary among women and within their different hormonal life stages, and there are no validated reference ranges.
Sexual function
A controversial issue, women’s sexual health remains somewhat of a mystery, the team noted – a complex web of physical, emotional, and psychological factors. Evidence derived from testosterone therapy in postmenopausal women shows that the hormone may influence all aspects of sexual response by improving desire, subjective arousal, and vaginal blood flow, and increasing frequency of orgasm.
However, decreasing sexuality is a common phenomenon for women, and is not dependent on physiologic testosterone levels. While response to testosterone therapy didn’t always correlate with plasma levels, most trials found that a daily dose of 300 mcg provided optimal benefit. One study found a more than 115% increase in reported orgasms, compared with a 38% increase in the placebo group, and another found 2.12 more satisfactory sexual events per month, compared with 0.73 per month with placebo.
One trial of a testosterone gel was negative, but was only available as an abstract. A large randomized trial of transdermal testosterone gel that recruited 3,565 naturally and surgically postmenopausal women, and accrued several thousand women-years of data, has yet to be published.
For postmenopausal women with properly diagnosed HSDD, the task force recommended a 3- to 6-month trial of testosterone for those who request therapy and in whom it is not contraindicated.
Testosterone levels should be measured at baseline and after 3-6 weeks of initial treatment to assess patient overuse. In cases of ongoing testosterone therapy, levels should be reviewed every 6 months to monitor for excessive use and signs of androgen excess.
Other indications
The task force noted insufficient evidence for the following indications:
• Infertility. One meta-analysis reported an overall 11% increase in live births; another found no benefit. The individual studies were marred by methodological issues, the team said.
• Bone. Several small studies showed increased bone density in some locations after testosterone therapy. However, many women received concomitant estrogens, so the studies were confounded, the team noted.
• Cognition. Several studies have hinted that testosterone may be protective against Alzheimer’s and other dementias in women, possibly by mediating the accumulation of neurotoxic amyloid beta brain plaques. Women taking the hormone scored better on cognitive tests, including verbal memory, as well as spatial and mathematical reasoning. “In addition to having neuroprotective effects, testosterone has positive effects on endothelial function and acts as a vasodilator, providing another potential pathway through which testosterone may confer neuroprotection,” the investigators said. Again, however, they felt that the body and quality of evidence were not enough to justify a recommendation.
• Cardiovascular. Higher endogenous testosterone in women has been associated with better endothelial function and lower carotid intima-medial thickness; exogenous testosterone has not been adequately studied. However, testosterone supplementation does not seem to negatively affect lipids or increase other cardiovascular risk markers.
• Body composition. Several large studies of women with testosterone-alone and testosterone-estradiol therapy found increased lean muscle mass and lower body fat mass. These results were seen in healthy women as well as those with Turner syndrome, anorexia nervosa, and HIV infections. “Thus,” the investigators concluded, “testosterone increases lean body mass and may decrease fat mass in women, but effects are less dramatic than in men.”
• Mood. Testosterone therapy resulted in improved mood and lower depression scores in several studies, but subjects in some were not screened for comorbidities, including sexual dysfunction.
• Side effects. The potential for masculinizing effects – acne, hirsutism, deepening of the voice, and androgenic alopecia – exists. They are dose dependent, uncommon, and short-lived once supraphysiologic levels are decreased. Findings on breast cancer risk are contradictory; the team said more study is necessary.
The task force commissioned a testosterone therapy meta-analysis of published randomized trials of testosterone-alone or in addition to hormone replacement therapy. “Across all trials, testosterone use was associated with a statistically significant improvement in satisfaction, pleasure, orgasm, and libido. The quality of evidence was moderate to high for pleasure and orgasm outcomes, and moderate for satisfaction and libido outcomes,” with minimal effect on lipids and none on hair growth or loss.
“However,” the task force wrote, “data on adverse effects were not extensive, particularly for long-term use,” with a follow-up of 6 weeks to 2 years.
Dr. Wierman had no financial disclosures. However, several coauthors had numerous disclosures, including financial ties with pharmaceutical companies.
On Twitter @alz_gal
Testosterone supplementation is not recommended for women, unless they have a clinical diagnosis of hypoactive sexual desire disorder, a joint task force led by the Endocrine Society has determined.
While a number of studies have shown that testosterone supplementation helps improve sexual desire, cognition, and other outcomes, most are either too small, too short, or confounded by other factors to provide irrefutable evidence of the hormone’s benefit for any indication other than hypoactive sexual desire disorder (HSDD), Dr. Margaret E. Wierman and her colleagues wrote in the Journal of Clinical Endocrinology and Metabolism (J. Clin. Endocrinol. Metab. 2014;99:3489-510).
A trial of testosterone is only appropriate for postmenopausal women with a diagnosed HSDD, wrote the task force, which also noted that libido and response improvements don’t necessarily correlate with testosterone serum levels. If there’s no clinical response after a 6-month trial, the hormone should be discontinued.
The hormone-health connection is clearly important to women, and many have already done Internet research on the topic, said Dr. Margery Gass, executive director of the North American Menopause Society. A Google query for “hormones to control aging” turned up 9.5 million results, she said.
Although NAMS was not involved in creating the new clinical guideline, the society supports it, she said in an interview.
“The Endocrine Society has published an excellent set of guidelines on the use of androgen therapy in women. These guidelines are in harmony with NAMS’ comments on the use of testosterone and dehydroepiandrosterones,” included in the group’s clinical practice guideline for the care of midlife women (Menopause 2014;21:1038-62). That paper also recommends a trial of testosterone therapy “in carefully selected postmenopausal women with female sexual interest/arousal disorder and no other etiology for their sexual problems.”
Dr. Gass continued, “I encourage clinicians to use both publications to help women understand the misinformation about testosterone and other androgens that they are seeing on the Internet.”
Dr. Wierman, chief of endocrinology at the University of Colorado, Aurora, led the task force, composed of representatives from the American Society for Reproductive Medicine, the American Congress of Obstetricians and Gynecologists, the European Society of Endocrinology, and the International Menopause Society. Together, they reviewed the extant literature and, in addition, commissioned meta-analyses to examine the issue of androgen supplementation in premenopausal and postmenopausal women – either healthy or with specific conditions. Evidence was graded as level 1 (strong) or level 2 (weak).
The group considered androgen supplementation for a number of indications: infertility; sexual dysfunction; cognition; cardiovascular, metabolic, and bone health; and general well-being. It found little strong data to support the practice in any of these except HSDD.
As a basic tenet, the task force agreed that androgen testing for most women is inaccurate, and thus virtually incapable of providing useful diagnostic information. Testosterone levels vary among women and within their different hormonal life stages, and there are no validated reference ranges.
Sexual function
A controversial issue, women’s sexual health remains somewhat of a mystery, the team noted – a complex web of physical, emotional, and psychological factors. Evidence derived from testosterone therapy in postmenopausal women shows that the hormone may influence all aspects of sexual response by improving desire, subjective arousal, and vaginal blood flow, and increasing frequency of orgasm.
However, decreasing sexuality is a common phenomenon for women, and is not dependent on physiologic testosterone levels. While response to testosterone therapy didn’t always correlate with plasma levels, most trials found that a daily dose of 300 mcg provided optimal benefit. One study found a more than 115% increase in reported orgasms, compared with a 38% increase in the placebo group, and another found 2.12 more satisfactory sexual events per month, compared with 0.73 per month with placebo.
One trial of a testosterone gel was negative, but was only available as an abstract. A large randomized trial of transdermal testosterone gel that recruited 3,565 naturally and surgically postmenopausal women, and accrued several thousand women-years of data, has yet to be published.
For postmenopausal women with properly diagnosed HSDD, the task force recommended a 3- to 6-month trial of testosterone for those who request therapy and in whom it is not contraindicated.
Testosterone levels should be measured at baseline and after 3-6 weeks of initial treatment to assess patient overuse. In cases of ongoing testosterone therapy, levels should be reviewed every 6 months to monitor for excessive use and signs of androgen excess.
Other indications
The task force noted insufficient evidence for the following indications:
• Infertility. One meta-analysis reported an overall 11% increase in live births; another found no benefit. The individual studies were marred by methodological issues, the team said.
• Bone. Several small studies showed increased bone density in some locations after testosterone therapy. However, many women received concomitant estrogens, so the studies were confounded, the team noted.
• Cognition. Several studies have hinted that testosterone may be protective against Alzheimer’s and other dementias in women, possibly by mediating the accumulation of neurotoxic amyloid beta brain plaques. Women taking the hormone scored better on cognitive tests, including verbal memory, as well as spatial and mathematical reasoning. “In addition to having neuroprotective effects, testosterone has positive effects on endothelial function and acts as a vasodilator, providing another potential pathway through which testosterone may confer neuroprotection,” the investigators said. Again, however, they felt that the body and quality of evidence were not enough to justify a recommendation.
• Cardiovascular. Higher endogenous testosterone in women has been associated with better endothelial function and lower carotid intima-medial thickness; exogenous testosterone has not been adequately studied. However, testosterone supplementation does not seem to negatively affect lipids or increase other cardiovascular risk markers.
• Body composition. Several large studies of women with testosterone-alone and testosterone-estradiol therapy found increased lean muscle mass and lower body fat mass. These results were seen in healthy women as well as those with Turner syndrome, anorexia nervosa, and HIV infections. “Thus,” the investigators concluded, “testosterone increases lean body mass and may decrease fat mass in women, but effects are less dramatic than in men.”
• Mood. Testosterone therapy resulted in improved mood and lower depression scores in several studies, but subjects in some were not screened for comorbidities, including sexual dysfunction.
• Side effects. The potential for masculinizing effects – acne, hirsutism, deepening of the voice, and androgenic alopecia – exists. They are dose dependent, uncommon, and short-lived once supraphysiologic levels are decreased. Findings on breast cancer risk are contradictory; the team said more study is necessary.
The task force commissioned a testosterone therapy meta-analysis of published randomized trials of testosterone-alone or in addition to hormone replacement therapy. “Across all trials, testosterone use was associated with a statistically significant improvement in satisfaction, pleasure, orgasm, and libido. The quality of evidence was moderate to high for pleasure and orgasm outcomes, and moderate for satisfaction and libido outcomes,” with minimal effect on lipids and none on hair growth or loss.
“However,” the task force wrote, “data on adverse effects were not extensive, particularly for long-term use,” with a follow-up of 6 weeks to 2 years.
Dr. Wierman had no financial disclosures. However, several coauthors had numerous disclosures, including financial ties with pharmaceutical companies.
On Twitter @alz_gal
Testosterone supplementation is not recommended for women, unless they have a clinical diagnosis of hypoactive sexual desire disorder, a joint task force led by the Endocrine Society has determined.
While a number of studies have shown that testosterone supplementation helps improve sexual desire, cognition, and other outcomes, most are either too small, too short, or confounded by other factors to provide irrefutable evidence of the hormone’s benefit for any indication other than hypoactive sexual desire disorder (HSDD), Dr. Margaret E. Wierman and her colleagues wrote in the Journal of Clinical Endocrinology and Metabolism (J. Clin. Endocrinol. Metab. 2014;99:3489-510).
A trial of testosterone is only appropriate for postmenopausal women with a diagnosed HSDD, wrote the task force, which also noted that libido and response improvements don’t necessarily correlate with testosterone serum levels. If there’s no clinical response after a 6-month trial, the hormone should be discontinued.
The hormone-health connection is clearly important to women, and many have already done Internet research on the topic, said Dr. Margery Gass, executive director of the North American Menopause Society. A Google query for “hormones to control aging” turned up 9.5 million results, she said.
Although NAMS was not involved in creating the new clinical guideline, the society supports it, she said in an interview.
“The Endocrine Society has published an excellent set of guidelines on the use of androgen therapy in women. These guidelines are in harmony with NAMS’ comments on the use of testosterone and dehydroepiandrosterones,” included in the group’s clinical practice guideline for the care of midlife women (Menopause 2014;21:1038-62). That paper also recommends a trial of testosterone therapy “in carefully selected postmenopausal women with female sexual interest/arousal disorder and no other etiology for their sexual problems.”
Dr. Gass continued, “I encourage clinicians to use both publications to help women understand the misinformation about testosterone and other androgens that they are seeing on the Internet.”
Dr. Wierman, chief of endocrinology at the University of Colorado, Aurora, led the task force, composed of representatives from the American Society for Reproductive Medicine, the American Congress of Obstetricians and Gynecologists, the European Society of Endocrinology, and the International Menopause Society. Together, they reviewed the extant literature and, in addition, commissioned meta-analyses to examine the issue of androgen supplementation in premenopausal and postmenopausal women – either healthy or with specific conditions. Evidence was graded as level 1 (strong) or level 2 (weak).
The group considered androgen supplementation for a number of indications: infertility; sexual dysfunction; cognition; cardiovascular, metabolic, and bone health; and general well-being. It found little strong data to support the practice in any of these except HSDD.
As a basic tenet, the task force agreed that androgen testing for most women is inaccurate, and thus virtually incapable of providing useful diagnostic information. Testosterone levels vary among women and within their different hormonal life stages, and there are no validated reference ranges.
Sexual function
A controversial issue, women’s sexual health remains somewhat of a mystery, the team noted – a complex web of physical, emotional, and psychological factors. Evidence derived from testosterone therapy in postmenopausal women shows that the hormone may influence all aspects of sexual response by improving desire, subjective arousal, and vaginal blood flow, and increasing frequency of orgasm.
However, decreasing sexuality is a common phenomenon for women, and is not dependent on physiologic testosterone levels. While response to testosterone therapy didn’t always correlate with plasma levels, most trials found that a daily dose of 300 mcg provided optimal benefit. One study found a more than 115% increase in reported orgasms, compared with a 38% increase in the placebo group, and another found 2.12 more satisfactory sexual events per month, compared with 0.73 per month with placebo.
One trial of a testosterone gel was negative, but was only available as an abstract. A large randomized trial of transdermal testosterone gel that recruited 3,565 naturally and surgically postmenopausal women, and accrued several thousand women-years of data, has yet to be published.
For postmenopausal women with properly diagnosed HSDD, the task force recommended a 3- to 6-month trial of testosterone for those who request therapy and in whom it is not contraindicated.
Testosterone levels should be measured at baseline and after 3-6 weeks of initial treatment to assess patient overuse. In cases of ongoing testosterone therapy, levels should be reviewed every 6 months to monitor for excessive use and signs of androgen excess.
Other indications
The task force noted insufficient evidence for the following indications:
• Infertility. One meta-analysis reported an overall 11% increase in live births; another found no benefit. The individual studies were marred by methodological issues, the team said.
• Bone. Several small studies showed increased bone density in some locations after testosterone therapy. However, many women received concomitant estrogens, so the studies were confounded, the team noted.
• Cognition. Several studies have hinted that testosterone may be protective against Alzheimer’s and other dementias in women, possibly by mediating the accumulation of neurotoxic amyloid beta brain plaques. Women taking the hormone scored better on cognitive tests, including verbal memory, as well as spatial and mathematical reasoning. “In addition to having neuroprotective effects, testosterone has positive effects on endothelial function and acts as a vasodilator, providing another potential pathway through which testosterone may confer neuroprotection,” the investigators said. Again, however, they felt that the body and quality of evidence were not enough to justify a recommendation.
• Cardiovascular. Higher endogenous testosterone in women has been associated with better endothelial function and lower carotid intima-medial thickness; exogenous testosterone has not been adequately studied. However, testosterone supplementation does not seem to negatively affect lipids or increase other cardiovascular risk markers.
• Body composition. Several large studies of women with testosterone-alone and testosterone-estradiol therapy found increased lean muscle mass and lower body fat mass. These results were seen in healthy women as well as those with Turner syndrome, anorexia nervosa, and HIV infections. “Thus,” the investigators concluded, “testosterone increases lean body mass and may decrease fat mass in women, but effects are less dramatic than in men.”
• Mood. Testosterone therapy resulted in improved mood and lower depression scores in several studies, but subjects in some were not screened for comorbidities, including sexual dysfunction.
• Side effects. The potential for masculinizing effects – acne, hirsutism, deepening of the voice, and androgenic alopecia – exists. They are dose dependent, uncommon, and short-lived once supraphysiologic levels are decreased. Findings on breast cancer risk are contradictory; the team said more study is necessary.
The task force commissioned a testosterone therapy meta-analysis of published randomized trials of testosterone-alone or in addition to hormone replacement therapy. “Across all trials, testosterone use was associated with a statistically significant improvement in satisfaction, pleasure, orgasm, and libido. The quality of evidence was moderate to high for pleasure and orgasm outcomes, and moderate for satisfaction and libido outcomes,” with minimal effect on lipids and none on hair growth or loss.
“However,” the task force wrote, “data on adverse effects were not extensive, particularly for long-term use,” with a follow-up of 6 weeks to 2 years.
Dr. Wierman had no financial disclosures. However, several coauthors had numerous disclosures, including financial ties with pharmaceutical companies.
On Twitter @alz_gal
Midurethral slings
Minimally invasive synthetic midurethral slings may be considered the standard of care for the surgical treatment of stress urinary incontinence – and a first-line treatment for severe cases of the condition – based on the publication of numerous level 1 randomized trials, high-quality reviews, and recent position statements from professional societies.
The current evidence base shows that midurethral sling operations are as effective as bladder neck slings and colposuspension, with less morbidity. Operating times are shorter, and local anesthesia is possible. Compared with pubovaginal slings, which are fixed at the bladder neck, midurethral slings are associated with less postoperative voiding dysfunction and fewer de novo urgency symptoms.
Midurethral slings (MUS) also have been shown to be more successful – and more cost-effective – than pelvic floor physiotherapy for stress urinary incontinence (SUI) overall, with the possible exception of mild SUI.
Physiotherapy involving pelvic floor muscle therapy has long been advocated as a first-line treatment for SUI, with MUS surgery often recommended when physiotherapy is unsuccessful. In recent years, however, with high success rates for MUS, the role of physiotherapy as a first-line treatment has become more debatable.
A multicenter randomized trial in 660 women published last year in the New England Journal of Medicine substantiated what many of us have seen in our practices and in other published studies: significantly lower rates of improvement and cure with initial physiotherapy than with primary surgery.
Initial MUS surgery resulted in higher rates of subjective improvement, compared with initial physiotherapy (91% vs. 64%), subjective cure (85% v. 53%), and objective cure (77% v. 59%) at 1 year. Moreover, a significant number of women – 49% – chose to abandon conservative therapy and have MUS surgery for their SUI during the study period (N. Engl. J. Med. 2013;369:1124-33).
A joint position statement published in early 2014 by the American Urogynecologic Society (AUGS) and the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction (SUFU) calls MUS the most extensively studied anti-incontinence procedure and “probably the most important advancement in the treatment of SUI in the last 50 years.” More than 2,000 publications in the literature have described the procedure for SUI, and multiple randomized controlled trials have compared various types of MUS procedures as well as MUS to other nonmesh SUI procedures, the statement says.
My colleague and I recently modeled the cost-effectiveness of pelvic floor muscle therapy and continence pessaries vs. surgical treatment with MUS for initial treatment of SUI. Initial treatment with MUS was the best strategy, with an incremental cost-effectiveness ratio of $32,132 per quality-adjusted life-year, compared with initial treatment with pelvic floor muscle therapy. Under our model, treatment with a continence pessary would never be the preferred choice due to low subjective cure rates (Am. J. Obstet. Gynecol. 2014;211:565.e1-6).
I now tell patients who present with a history of severe stress incontinence, and who leak on a cough stress test, that a trial of pelvic floor physiotherapy is an option but one with a lower likelihood of success. I recommend an MUS as primary treatment for these patients, and the question then often becomes which sling to use.
Sling selection
There are two broad approaches to MUS surgery – retropubic and transobturator – and within each approach, there are different routes for the delivery of the polypropylene mesh sling.
Retropubic slings. Retropubic slings are passed transvaginally at the midurethral level through the retropubic space. Tension-free vaginal tape (TVT) has been used in millions of women worldwide, with good long-term outcomes, since it was introduced by Dr. Ulf Ulmsten in 1995. The TVT procedure utilizes a bottom-up approach, with curved needles being passed from a small vaginal incision up through the retropubic space to exit through two suprapubic incisions.
A second type of retropubic sling – the suprapubic urethral support sling (SPARC, American Medical Systems) – utilizes a downward-pass, or top-down, approach in which a metal trocar is passed through suprapubic incisions and down through the retropubic space to exit a vaginal incision.
The theoretical advantages of this modification to the TVT procedure have included more control over the needle introducer near the rectus fascia, and a lower risk of bowel and vascular injury. However, comparisons during the last decade of the two retropubic approaches have suggested slightly better outcomes – relating both to cure rates and to complication rates – with TVT compared with SPARC.
A Cochrane Review published in 2009, titled “Minimally invasive synthetic suburethral sling operations for stress urinary incontinence in women,” provided higher-level evidence in favor of bottom-up slings. A sub-meta-analysis of five randomized controlled trials – part of a broader intervention review – showed that a retropubic bottom-up approach was more effective than a top-down route (risk ratio, 1.10), with higher subjective and objective SUI cure rates (Cochrane Database Syst. Rev. 2009(4): CD006375). There also was significantly less bladder perforation, less mesh erosion, and less voiding dysfunction.
TVT slings, therefore, appear to be somewhat superior, with statistically significant differences in each of the domains of efficacy and morbidity. Still, surgeon experience and skill remain factors in sling selection; the surgeon who feels comfortable and skilled with a top-down approach and has little experience with a bottom-up approach should continue with SPARC. For surgeons who are skilled with both approaches, it might well be preferable to favor TVT.
Transobturator slings. The transobturator approach was developed to minimize the potential for bladder and bowel injuries by avoiding the pelvic organs in the retropubic space. The sling is introduced either through an inside-out technique, with the needle passed from a vaginal incision and out through the obturator foramen, or through an outside-in technique, with the needle passed through the thigh and then out through the vaginal incision.
A meta-analysis of trials of transobturator sling procedures – including four direct-comparison, randomized controlled trials of the inside-out technique vs. the outside-in technique – showed no significant differences between the two approaches in subjective and objective SUI cure rates in the short term. Rates of postoperative voiding difficulties and de novo urgency symptoms were similar (BJU Int. 2010;106:68-76).
Making a choice. Each of the currently available midurethral slings appears to work well, overall, with few clinically significant differences in outcomes. On the other hand, midurethral slings are not all the same. It is important to appreciate the more subtle differences, to be aware of the evidence, and to be appropriately trained. Often, sling selection involves weighing the risks and benefits for the individual.
On a broad scale, the most recent high-level comparison of the retropubic and transobturator slings appears to be a meta-analysis in which retropubic midurethral slings showed better objective and subjective cure rates than transobturator midurethral slings. Women treated with retropubic slings had a 35% higher odds of objective cure and a 24% higher odds of subjective cure. (The weighted average objective cure rates were 87% for retropubic slings vs. 83% for transobturator slings with a weighted average follow-up of approximately 17 months. The weighted average subjective cure rates were 76% and 73%, respectively.)
Operating times were longer with retropubic slings, but lengths of stay were equivalent between the two types of procedures. This was based on 17 studies of about 3,000 women (J. Urology 2014 [doi: 10.1016/j.juro.2014.09.104]).
The types of complications seen with each approach differed. Bladder perforation was significantly more common with retropubic slings (3.2% vs. 0.2%), as was bleeding (3.2% v. 1.1%). Transobturator slings were associated with more cases of neurologic symptoms (9.4% v. 3.5%) and vaginal perforation (3.6% v. 0.9%).
This new review provides updated information to the 2009 Cochrane Review mentioned above, which reported that women were less likely to be continent after operations performed via the obturator route, but also less likely to have encountered complications. More specifically, objective cure rates were slightly higher with retropubic slings than with transobturator slings (88% vs. 84%) in the 2009 review. There was no difference in subjective cure rates. With the obturator route, there was less voiding dysfunction, blood loss, and bladder perforation (0.3% v. 5.5%).
Other pivotal trials since the 2009 Cochrane Review include a multicenter randomized equivalence trial published in the New England Journal of Medicine in 2010. The trial randomized 597 women to transobturator or retropubic sling surgery, and found no significant differences in subjective success (56% vs. 62%) or in objective success (78% vs. 81%) at 12 months (N. Engl. J. Med. 2010;362:2066-76).
There is some level 1 evidence suggesting that for severe incontinence involving intrinsic sphincter deficiency (ISD), a retropubic TVT sling is the more effective procedure. A randomized trial of 164 women with urodynamic SUI and ISD, for instance, found that 21% of those in the TVT group and 45% of those in the transobturator group had urodynamic SUI 6 months postoperatively.
The risk ratio of repeat surgery was 2.6 times higher in the transobturator group than in the retropubic TVT group (Obstet. Gynecol. 2008;112:1253-61). TVT was more effective both with and without concurrent pelvic organ prolapse repair.
I tell my patients with severe SUI or ISD, therefore, that retropubic sling procedures appear to be preferable. (Exceptions include the patient who has a history of retropubic surgeries, in whom passing the sling through this route may not be the safest approach, as well as the patient who has had mesh erosion into the bladder.)
In patients whose SUI is less severe, I counsel that a transobturator sling confers satisfaction rates similar to those of a retropubic sling and has a lower risk of complications, such as postoperative voiding dysfunction and bladder perforations, but with the possible trade-off of more thigh discomfort. I also might recommend a transobturator sling to patients with more pronounced initial complaints of urinary urgency and frequency, and to patients who have minor voiding dysfunction or a low level of incomplete bladder emptying.
While often short-lived, the small risk of thigh pain with a transobturator sling makes me less likely to recommend this type of sling for a woman who is a marathon runner or competitive athlete. In her case, an analysis of possible complications includes the consideration that bladder perforation can be addressed relatively quickly in the operating room, while persistent thigh discomfort, though relatively rare, could be a debilitating problem.
Single-incision slings
There appears to be emerging evidence suggesting that some of the fixed and adjustable single-incision slings currently available may have efficacy similar to that of the slings that are now widely used.
A Cochrane Review presented at the 2014 AUGS-IUGA scientific meeting and published this summer concludes that there is not enough evidence on single-incision slings compared with retropubic or transobturator slings to allow reliable comparisons, and that additional, adequately powered, high-quality trials with longer-term follow-up are needed (Cochrane Database Sys. Rev. 2014;6:CD008709). However, research completed since the review offers additional data.
For instance, at the 2014 AUGS-IUGA scientific meeting this summer, an oral paper presentation highlighted findings of a randomized controlled trial that showed similar cure rates after surgery with the MiniArc, a fixed single-incision sling, and the Monarc transobturator sling (both by American Medical Systems) at 24 months. The study randomized 234 women to either sling and found no significant differences in subjective outcomes, objective outcomes, or results on various quality-of-life questionnaires.
As such studies are published and more evidence emerges, we will gain a clearer picture of how the newer single-incision slings compare to the well-tested retropubic and transobturator slings with respect to efficacy and safety.
Single-incision slings require only a small vaginal incision and no exit points. Without abdominal or thigh incisions, these new procedures – intended for less severe SUI (no ISD) – may offer improved perioperative and postoperative patient comfort and a potentially decreased risk of surgical injury to the adductor muscles, as well as a decreased risk of vascular and nerve injury. Candidates for these slings may include those who are very athletic, those who are obese, and those with a history of prior retropubic or pelvic surgery.
Research appears to be progressing, but at this time we do not yet have level 1 evidence to support their routine use.
Dr. Sokol reported that he owns stock in Pelvalon, and is a clinical adviser to that company. He also is a national principal investigator for American Medical Systems, and the recipient of research grants from Acell and several other companies.
Minimally invasive synthetic midurethral slings may be considered the standard of care for the surgical treatment of stress urinary incontinence – and a first-line treatment for severe cases of the condition – based on the publication of numerous level 1 randomized trials, high-quality reviews, and recent position statements from professional societies.
The current evidence base shows that midurethral sling operations are as effective as bladder neck slings and colposuspension, with less morbidity. Operating times are shorter, and local anesthesia is possible. Compared with pubovaginal slings, which are fixed at the bladder neck, midurethral slings are associated with less postoperative voiding dysfunction and fewer de novo urgency symptoms.
Midurethral slings (MUS) also have been shown to be more successful – and more cost-effective – than pelvic floor physiotherapy for stress urinary incontinence (SUI) overall, with the possible exception of mild SUI.
Physiotherapy involving pelvic floor muscle therapy has long been advocated as a first-line treatment for SUI, with MUS surgery often recommended when physiotherapy is unsuccessful. In recent years, however, with high success rates for MUS, the role of physiotherapy as a first-line treatment has become more debatable.
A multicenter randomized trial in 660 women published last year in the New England Journal of Medicine substantiated what many of us have seen in our practices and in other published studies: significantly lower rates of improvement and cure with initial physiotherapy than with primary surgery.
Initial MUS surgery resulted in higher rates of subjective improvement, compared with initial physiotherapy (91% vs. 64%), subjective cure (85% v. 53%), and objective cure (77% v. 59%) at 1 year. Moreover, a significant number of women – 49% – chose to abandon conservative therapy and have MUS surgery for their SUI during the study period (N. Engl. J. Med. 2013;369:1124-33).
A joint position statement published in early 2014 by the American Urogynecologic Society (AUGS) and the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction (SUFU) calls MUS the most extensively studied anti-incontinence procedure and “probably the most important advancement in the treatment of SUI in the last 50 years.” More than 2,000 publications in the literature have described the procedure for SUI, and multiple randomized controlled trials have compared various types of MUS procedures as well as MUS to other nonmesh SUI procedures, the statement says.
My colleague and I recently modeled the cost-effectiveness of pelvic floor muscle therapy and continence pessaries vs. surgical treatment with MUS for initial treatment of SUI. Initial treatment with MUS was the best strategy, with an incremental cost-effectiveness ratio of $32,132 per quality-adjusted life-year, compared with initial treatment with pelvic floor muscle therapy. Under our model, treatment with a continence pessary would never be the preferred choice due to low subjective cure rates (Am. J. Obstet. Gynecol. 2014;211:565.e1-6).
I now tell patients who present with a history of severe stress incontinence, and who leak on a cough stress test, that a trial of pelvic floor physiotherapy is an option but one with a lower likelihood of success. I recommend an MUS as primary treatment for these patients, and the question then often becomes which sling to use.
Sling selection
There are two broad approaches to MUS surgery – retropubic and transobturator – and within each approach, there are different routes for the delivery of the polypropylene mesh sling.
Retropubic slings. Retropubic slings are passed transvaginally at the midurethral level through the retropubic space. Tension-free vaginal tape (TVT) has been used in millions of women worldwide, with good long-term outcomes, since it was introduced by Dr. Ulf Ulmsten in 1995. The TVT procedure utilizes a bottom-up approach, with curved needles being passed from a small vaginal incision up through the retropubic space to exit through two suprapubic incisions.
A second type of retropubic sling – the suprapubic urethral support sling (SPARC, American Medical Systems) – utilizes a downward-pass, or top-down, approach in which a metal trocar is passed through suprapubic incisions and down through the retropubic space to exit a vaginal incision.
The theoretical advantages of this modification to the TVT procedure have included more control over the needle introducer near the rectus fascia, and a lower risk of bowel and vascular injury. However, comparisons during the last decade of the two retropubic approaches have suggested slightly better outcomes – relating both to cure rates and to complication rates – with TVT compared with SPARC.
A Cochrane Review published in 2009, titled “Minimally invasive synthetic suburethral sling operations for stress urinary incontinence in women,” provided higher-level evidence in favor of bottom-up slings. A sub-meta-analysis of five randomized controlled trials – part of a broader intervention review – showed that a retropubic bottom-up approach was more effective than a top-down route (risk ratio, 1.10), with higher subjective and objective SUI cure rates (Cochrane Database Syst. Rev. 2009(4): CD006375). There also was significantly less bladder perforation, less mesh erosion, and less voiding dysfunction.
TVT slings, therefore, appear to be somewhat superior, with statistically significant differences in each of the domains of efficacy and morbidity. Still, surgeon experience and skill remain factors in sling selection; the surgeon who feels comfortable and skilled with a top-down approach and has little experience with a bottom-up approach should continue with SPARC. For surgeons who are skilled with both approaches, it might well be preferable to favor TVT.
Transobturator slings. The transobturator approach was developed to minimize the potential for bladder and bowel injuries by avoiding the pelvic organs in the retropubic space. The sling is introduced either through an inside-out technique, with the needle passed from a vaginal incision and out through the obturator foramen, or through an outside-in technique, with the needle passed through the thigh and then out through the vaginal incision.
A meta-analysis of trials of transobturator sling procedures – including four direct-comparison, randomized controlled trials of the inside-out technique vs. the outside-in technique – showed no significant differences between the two approaches in subjective and objective SUI cure rates in the short term. Rates of postoperative voiding difficulties and de novo urgency symptoms were similar (BJU Int. 2010;106:68-76).
Making a choice. Each of the currently available midurethral slings appears to work well, overall, with few clinically significant differences in outcomes. On the other hand, midurethral slings are not all the same. It is important to appreciate the more subtle differences, to be aware of the evidence, and to be appropriately trained. Often, sling selection involves weighing the risks and benefits for the individual.
On a broad scale, the most recent high-level comparison of the retropubic and transobturator slings appears to be a meta-analysis in which retropubic midurethral slings showed better objective and subjective cure rates than transobturator midurethral slings. Women treated with retropubic slings had a 35% higher odds of objective cure and a 24% higher odds of subjective cure. (The weighted average objective cure rates were 87% for retropubic slings vs. 83% for transobturator slings with a weighted average follow-up of approximately 17 months. The weighted average subjective cure rates were 76% and 73%, respectively.)
Operating times were longer with retropubic slings, but lengths of stay were equivalent between the two types of procedures. This was based on 17 studies of about 3,000 women (J. Urology 2014 [doi: 10.1016/j.juro.2014.09.104]).
The types of complications seen with each approach differed. Bladder perforation was significantly more common with retropubic slings (3.2% vs. 0.2%), as was bleeding (3.2% v. 1.1%). Transobturator slings were associated with more cases of neurologic symptoms (9.4% v. 3.5%) and vaginal perforation (3.6% v. 0.9%).
This new review provides updated information to the 2009 Cochrane Review mentioned above, which reported that women were less likely to be continent after operations performed via the obturator route, but also less likely to have encountered complications. More specifically, objective cure rates were slightly higher with retropubic slings than with transobturator slings (88% vs. 84%) in the 2009 review. There was no difference in subjective cure rates. With the obturator route, there was less voiding dysfunction, blood loss, and bladder perforation (0.3% v. 5.5%).
Other pivotal trials since the 2009 Cochrane Review include a multicenter randomized equivalence trial published in the New England Journal of Medicine in 2010. The trial randomized 597 women to transobturator or retropubic sling surgery, and found no significant differences in subjective success (56% vs. 62%) or in objective success (78% vs. 81%) at 12 months (N. Engl. J. Med. 2010;362:2066-76).
There is some level 1 evidence suggesting that for severe incontinence involving intrinsic sphincter deficiency (ISD), a retropubic TVT sling is the more effective procedure. A randomized trial of 164 women with urodynamic SUI and ISD, for instance, found that 21% of those in the TVT group and 45% of those in the transobturator group had urodynamic SUI 6 months postoperatively.
The risk ratio of repeat surgery was 2.6 times higher in the transobturator group than in the retropubic TVT group (Obstet. Gynecol. 2008;112:1253-61). TVT was more effective both with and without concurrent pelvic organ prolapse repair.
I tell my patients with severe SUI or ISD, therefore, that retropubic sling procedures appear to be preferable. (Exceptions include the patient who has a history of retropubic surgeries, in whom passing the sling through this route may not be the safest approach, as well as the patient who has had mesh erosion into the bladder.)
In patients whose SUI is less severe, I counsel that a transobturator sling confers satisfaction rates similar to those of a retropubic sling and has a lower risk of complications, such as postoperative voiding dysfunction and bladder perforations, but with the possible trade-off of more thigh discomfort. I also might recommend a transobturator sling to patients with more pronounced initial complaints of urinary urgency and frequency, and to patients who have minor voiding dysfunction or a low level of incomplete bladder emptying.
While often short-lived, the small risk of thigh pain with a transobturator sling makes me less likely to recommend this type of sling for a woman who is a marathon runner or competitive athlete. In her case, an analysis of possible complications includes the consideration that bladder perforation can be addressed relatively quickly in the operating room, while persistent thigh discomfort, though relatively rare, could be a debilitating problem.
Single-incision slings
There appears to be emerging evidence suggesting that some of the fixed and adjustable single-incision slings currently available may have efficacy similar to that of the slings that are now widely used.
A Cochrane Review presented at the 2014 AUGS-IUGA scientific meeting and published this summer concludes that there is not enough evidence on single-incision slings compared with retropubic or transobturator slings to allow reliable comparisons, and that additional, adequately powered, high-quality trials with longer-term follow-up are needed (Cochrane Database Sys. Rev. 2014;6:CD008709). However, research completed since the review offers additional data.
For instance, at the 2014 AUGS-IUGA scientific meeting this summer, an oral paper presentation highlighted findings of a randomized controlled trial that showed similar cure rates after surgery with the MiniArc, a fixed single-incision sling, and the Monarc transobturator sling (both by American Medical Systems) at 24 months. The study randomized 234 women to either sling and found no significant differences in subjective outcomes, objective outcomes, or results on various quality-of-life questionnaires.
As such studies are published and more evidence emerges, we will gain a clearer picture of how the newer single-incision slings compare to the well-tested retropubic and transobturator slings with respect to efficacy and safety.
Single-incision slings require only a small vaginal incision and no exit points. Without abdominal or thigh incisions, these new procedures – intended for less severe SUI (no ISD) – may offer improved perioperative and postoperative patient comfort and a potentially decreased risk of surgical injury to the adductor muscles, as well as a decreased risk of vascular and nerve injury. Candidates for these slings may include those who are very athletic, those who are obese, and those with a history of prior retropubic or pelvic surgery.
Research appears to be progressing, but at this time we do not yet have level 1 evidence to support their routine use.
Dr. Sokol reported that he owns stock in Pelvalon, and is a clinical adviser to that company. He also is a national principal investigator for American Medical Systems, and the recipient of research grants from Acell and several other companies.
Minimally invasive synthetic midurethral slings may be considered the standard of care for the surgical treatment of stress urinary incontinence – and a first-line treatment for severe cases of the condition – based on the publication of numerous level 1 randomized trials, high-quality reviews, and recent position statements from professional societies.
The current evidence base shows that midurethral sling operations are as effective as bladder neck slings and colposuspension, with less morbidity. Operating times are shorter, and local anesthesia is possible. Compared with pubovaginal slings, which are fixed at the bladder neck, midurethral slings are associated with less postoperative voiding dysfunction and fewer de novo urgency symptoms.
Midurethral slings (MUS) also have been shown to be more successful – and more cost-effective – than pelvic floor physiotherapy for stress urinary incontinence (SUI) overall, with the possible exception of mild SUI.
Physiotherapy involving pelvic floor muscle therapy has long been advocated as a first-line treatment for SUI, with MUS surgery often recommended when physiotherapy is unsuccessful. In recent years, however, with high success rates for MUS, the role of physiotherapy as a first-line treatment has become more debatable.
A multicenter randomized trial in 660 women published last year in the New England Journal of Medicine substantiated what many of us have seen in our practices and in other published studies: significantly lower rates of improvement and cure with initial physiotherapy than with primary surgery.
Initial MUS surgery resulted in higher rates of subjective improvement, compared with initial physiotherapy (91% vs. 64%), subjective cure (85% v. 53%), and objective cure (77% v. 59%) at 1 year. Moreover, a significant number of women – 49% – chose to abandon conservative therapy and have MUS surgery for their SUI during the study period (N. Engl. J. Med. 2013;369:1124-33).
A joint position statement published in early 2014 by the American Urogynecologic Society (AUGS) and the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction (SUFU) calls MUS the most extensively studied anti-incontinence procedure and “probably the most important advancement in the treatment of SUI in the last 50 years.” More than 2,000 publications in the literature have described the procedure for SUI, and multiple randomized controlled trials have compared various types of MUS procedures as well as MUS to other nonmesh SUI procedures, the statement says.
My colleague and I recently modeled the cost-effectiveness of pelvic floor muscle therapy and continence pessaries vs. surgical treatment with MUS for initial treatment of SUI. Initial treatment with MUS was the best strategy, with an incremental cost-effectiveness ratio of $32,132 per quality-adjusted life-year, compared with initial treatment with pelvic floor muscle therapy. Under our model, treatment with a continence pessary would never be the preferred choice due to low subjective cure rates (Am. J. Obstet. Gynecol. 2014;211:565.e1-6).
I now tell patients who present with a history of severe stress incontinence, and who leak on a cough stress test, that a trial of pelvic floor physiotherapy is an option but one with a lower likelihood of success. I recommend an MUS as primary treatment for these patients, and the question then often becomes which sling to use.
Sling selection
There are two broad approaches to MUS surgery – retropubic and transobturator – and within each approach, there are different routes for the delivery of the polypropylene mesh sling.
Retropubic slings. Retropubic slings are passed transvaginally at the midurethral level through the retropubic space. Tension-free vaginal tape (TVT) has been used in millions of women worldwide, with good long-term outcomes, since it was introduced by Dr. Ulf Ulmsten in 1995. The TVT procedure utilizes a bottom-up approach, with curved needles being passed from a small vaginal incision up through the retropubic space to exit through two suprapubic incisions.
A second type of retropubic sling – the suprapubic urethral support sling (SPARC, American Medical Systems) – utilizes a downward-pass, or top-down, approach in which a metal trocar is passed through suprapubic incisions and down through the retropubic space to exit a vaginal incision.
The theoretical advantages of this modification to the TVT procedure have included more control over the needle introducer near the rectus fascia, and a lower risk of bowel and vascular injury. However, comparisons during the last decade of the two retropubic approaches have suggested slightly better outcomes – relating both to cure rates and to complication rates – with TVT compared with SPARC.
A Cochrane Review published in 2009, titled “Minimally invasive synthetic suburethral sling operations for stress urinary incontinence in women,” provided higher-level evidence in favor of bottom-up slings. A sub-meta-analysis of five randomized controlled trials – part of a broader intervention review – showed that a retropubic bottom-up approach was more effective than a top-down route (risk ratio, 1.10), with higher subjective and objective SUI cure rates (Cochrane Database Syst. Rev. 2009(4): CD006375). There also was significantly less bladder perforation, less mesh erosion, and less voiding dysfunction.
TVT slings, therefore, appear to be somewhat superior, with statistically significant differences in each of the domains of efficacy and morbidity. Still, surgeon experience and skill remain factors in sling selection; the surgeon who feels comfortable and skilled with a top-down approach and has little experience with a bottom-up approach should continue with SPARC. For surgeons who are skilled with both approaches, it might well be preferable to favor TVT.
Transobturator slings. The transobturator approach was developed to minimize the potential for bladder and bowel injuries by avoiding the pelvic organs in the retropubic space. The sling is introduced either through an inside-out technique, with the needle passed from a vaginal incision and out through the obturator foramen, or through an outside-in technique, with the needle passed through the thigh and then out through the vaginal incision.
A meta-analysis of trials of transobturator sling procedures – including four direct-comparison, randomized controlled trials of the inside-out technique vs. the outside-in technique – showed no significant differences between the two approaches in subjective and objective SUI cure rates in the short term. Rates of postoperative voiding difficulties and de novo urgency symptoms were similar (BJU Int. 2010;106:68-76).
Making a choice. Each of the currently available midurethral slings appears to work well, overall, with few clinically significant differences in outcomes. On the other hand, midurethral slings are not all the same. It is important to appreciate the more subtle differences, to be aware of the evidence, and to be appropriately trained. Often, sling selection involves weighing the risks and benefits for the individual.
On a broad scale, the most recent high-level comparison of the retropubic and transobturator slings appears to be a meta-analysis in which retropubic midurethral slings showed better objective and subjective cure rates than transobturator midurethral slings. Women treated with retropubic slings had a 35% higher odds of objective cure and a 24% higher odds of subjective cure. (The weighted average objective cure rates were 87% for retropubic slings vs. 83% for transobturator slings with a weighted average follow-up of approximately 17 months. The weighted average subjective cure rates were 76% and 73%, respectively.)
Operating times were longer with retropubic slings, but lengths of stay were equivalent between the two types of procedures. This was based on 17 studies of about 3,000 women (J. Urology 2014 [doi: 10.1016/j.juro.2014.09.104]).
The types of complications seen with each approach differed. Bladder perforation was significantly more common with retropubic slings (3.2% vs. 0.2%), as was bleeding (3.2% v. 1.1%). Transobturator slings were associated with more cases of neurologic symptoms (9.4% v. 3.5%) and vaginal perforation (3.6% v. 0.9%).
This new review provides updated information to the 2009 Cochrane Review mentioned above, which reported that women were less likely to be continent after operations performed via the obturator route, but also less likely to have encountered complications. More specifically, objective cure rates were slightly higher with retropubic slings than with transobturator slings (88% vs. 84%) in the 2009 review. There was no difference in subjective cure rates. With the obturator route, there was less voiding dysfunction, blood loss, and bladder perforation (0.3% v. 5.5%).
Other pivotal trials since the 2009 Cochrane Review include a multicenter randomized equivalence trial published in the New England Journal of Medicine in 2010. The trial randomized 597 women to transobturator or retropubic sling surgery, and found no significant differences in subjective success (56% vs. 62%) or in objective success (78% vs. 81%) at 12 months (N. Engl. J. Med. 2010;362:2066-76).
There is some level 1 evidence suggesting that for severe incontinence involving intrinsic sphincter deficiency (ISD), a retropubic TVT sling is the more effective procedure. A randomized trial of 164 women with urodynamic SUI and ISD, for instance, found that 21% of those in the TVT group and 45% of those in the transobturator group had urodynamic SUI 6 months postoperatively.
The risk ratio of repeat surgery was 2.6 times higher in the transobturator group than in the retropubic TVT group (Obstet. Gynecol. 2008;112:1253-61). TVT was more effective both with and without concurrent pelvic organ prolapse repair.
I tell my patients with severe SUI or ISD, therefore, that retropubic sling procedures appear to be preferable. (Exceptions include the patient who has a history of retropubic surgeries, in whom passing the sling through this route may not be the safest approach, as well as the patient who has had mesh erosion into the bladder.)
In patients whose SUI is less severe, I counsel that a transobturator sling confers satisfaction rates similar to those of a retropubic sling and has a lower risk of complications, such as postoperative voiding dysfunction and bladder perforations, but with the possible trade-off of more thigh discomfort. I also might recommend a transobturator sling to patients with more pronounced initial complaints of urinary urgency and frequency, and to patients who have minor voiding dysfunction or a low level of incomplete bladder emptying.
While often short-lived, the small risk of thigh pain with a transobturator sling makes me less likely to recommend this type of sling for a woman who is a marathon runner or competitive athlete. In her case, an analysis of possible complications includes the consideration that bladder perforation can be addressed relatively quickly in the operating room, while persistent thigh discomfort, though relatively rare, could be a debilitating problem.
Single-incision slings
There appears to be emerging evidence suggesting that some of the fixed and adjustable single-incision slings currently available may have efficacy similar to that of the slings that are now widely used.
A Cochrane Review presented at the 2014 AUGS-IUGA scientific meeting and published this summer concludes that there is not enough evidence on single-incision slings compared with retropubic or transobturator slings to allow reliable comparisons, and that additional, adequately powered, high-quality trials with longer-term follow-up are needed (Cochrane Database Sys. Rev. 2014;6:CD008709). However, research completed since the review offers additional data.
For instance, at the 2014 AUGS-IUGA scientific meeting this summer, an oral paper presentation highlighted findings of a randomized controlled trial that showed similar cure rates after surgery with the MiniArc, a fixed single-incision sling, and the Monarc transobturator sling (both by American Medical Systems) at 24 months. The study randomized 234 women to either sling and found no significant differences in subjective outcomes, objective outcomes, or results on various quality-of-life questionnaires.
As such studies are published and more evidence emerges, we will gain a clearer picture of how the newer single-incision slings compare to the well-tested retropubic and transobturator slings with respect to efficacy and safety.
Single-incision slings require only a small vaginal incision and no exit points. Without abdominal or thigh incisions, these new procedures – intended for less severe SUI (no ISD) – may offer improved perioperative and postoperative patient comfort and a potentially decreased risk of surgical injury to the adductor muscles, as well as a decreased risk of vascular and nerve injury. Candidates for these slings may include those who are very athletic, those who are obese, and those with a history of prior retropubic or pelvic surgery.
Research appears to be progressing, but at this time we do not yet have level 1 evidence to support their routine use.
Dr. Sokol reported that he owns stock in Pelvalon, and is a clinical adviser to that company. He also is a national principal investigator for American Medical Systems, and the recipient of research grants from Acell and several other companies.
Treatment of stress urinary incontinence
According to a 2004 article by Dr. Eric S. Rovner and Dr. Alan J. Wein, 200 different surgical procedures have been described to treat stress urinary incontinence (Rev. Urol. 2004;6(Suppl 3):S29-47). Two goals exist in such surgical procedures:
1. Urethra repositioning or stabilization of the urethra and bladder neck through creation of retropubic support that is impervious to intraabdominal pressure changes.
2. Augmentation of the ureteral resistance provided by the intrinsic sphincter unit, with or without impacting urethra and bladder neck support (sling vs. periurethral injectables, or a combination of the two).
Sling procedures were initially introduced almost a century ago and have recently become increasingly popular – in part, secondary to a decrease in associated morbidity. Unlike transabdominal or transvaginal urethropexy, a sling not only provides support to the vesicourethral junction, but also may create some aspect of urethral coaptation or compression.
Midurethral slings were introduced nearly 20 years ago. These procedures can be performed with a local anesthetic or with minimal regional anesthesia – thus, in an outpatient setting. In addition, midurethral slings are associated with decreased pain and postoperative convalescence.
I have asked Dr. Eric Russell Sokol to lead this state-of-the-art discussion on midurethral slings. Dr. Sokol is an associate professor of obstetrics and gynecology, associate professor of urology (by courtesy), and cochief of the division of urogynecology and pelvic reconstructive surgery at Stanford (Calif.) University. He has published many articles regarding urogynecology and minimally invasive surgery. Dr. Sokol has been awarded numerous teaching awards, and he is a reviewer for multiple prestigious, peer-reviewed journals. It is a pleasure and an honor to welcome Dr. Sokol to this edition of Master Class in Gynecologic Surgery, the second installment on urinary incontinence.
Dr. Miller is clinical associate professor at the University of Illinois at Chicago, immediate past president of the International Society for Gynecologic Endoscopy (ISGE), and a past president of the AAGL. He is a reproductive endocrinologist and minimally invasive gynecologic surgeon in private practice in Naperville, Ill., and Schaumburg, Ill.; the director of minimally invasive gynecologic surgery and the director of the AAGL/SRS fellowship in minimally invasive gynecologic surgery at Advocate Lutheran General Hospital, Park Ridge, Ill.; and the medical editor of this column, Master Class. Dr. Miller is a consultant and on the speaker’s bureau for Ethicon.
According to a 2004 article by Dr. Eric S. Rovner and Dr. Alan J. Wein, 200 different surgical procedures have been described to treat stress urinary incontinence (Rev. Urol. 2004;6(Suppl 3):S29-47). Two goals exist in such surgical procedures:
1. Urethra repositioning or stabilization of the urethra and bladder neck through creation of retropubic support that is impervious to intraabdominal pressure changes.
2. Augmentation of the ureteral resistance provided by the intrinsic sphincter unit, with or without impacting urethra and bladder neck support (sling vs. periurethral injectables, or a combination of the two).
Sling procedures were initially introduced almost a century ago and have recently become increasingly popular – in part, secondary to a decrease in associated morbidity. Unlike transabdominal or transvaginal urethropexy, a sling not only provides support to the vesicourethral junction, but also may create some aspect of urethral coaptation or compression.
Midurethral slings were introduced nearly 20 years ago. These procedures can be performed with a local anesthetic or with minimal regional anesthesia – thus, in an outpatient setting. In addition, midurethral slings are associated with decreased pain and postoperative convalescence.
I have asked Dr. Eric Russell Sokol to lead this state-of-the-art discussion on midurethral slings. Dr. Sokol is an associate professor of obstetrics and gynecology, associate professor of urology (by courtesy), and cochief of the division of urogynecology and pelvic reconstructive surgery at Stanford (Calif.) University. He has published many articles regarding urogynecology and minimally invasive surgery. Dr. Sokol has been awarded numerous teaching awards, and he is a reviewer for multiple prestigious, peer-reviewed journals. It is a pleasure and an honor to welcome Dr. Sokol to this edition of Master Class in Gynecologic Surgery, the second installment on urinary incontinence.
Dr. Miller is clinical associate professor at the University of Illinois at Chicago, immediate past president of the International Society for Gynecologic Endoscopy (ISGE), and a past president of the AAGL. He is a reproductive endocrinologist and minimally invasive gynecologic surgeon in private practice in Naperville, Ill., and Schaumburg, Ill.; the director of minimally invasive gynecologic surgery and the director of the AAGL/SRS fellowship in minimally invasive gynecologic surgery at Advocate Lutheran General Hospital, Park Ridge, Ill.; and the medical editor of this column, Master Class. Dr. Miller is a consultant and on the speaker’s bureau for Ethicon.
According to a 2004 article by Dr. Eric S. Rovner and Dr. Alan J. Wein, 200 different surgical procedures have been described to treat stress urinary incontinence (Rev. Urol. 2004;6(Suppl 3):S29-47). Two goals exist in such surgical procedures:
1. Urethra repositioning or stabilization of the urethra and bladder neck through creation of retropubic support that is impervious to intraabdominal pressure changes.
2. Augmentation of the ureteral resistance provided by the intrinsic sphincter unit, with or without impacting urethra and bladder neck support (sling vs. periurethral injectables, or a combination of the two).
Sling procedures were initially introduced almost a century ago and have recently become increasingly popular – in part, secondary to a decrease in associated morbidity. Unlike transabdominal or transvaginal urethropexy, a sling not only provides support to the vesicourethral junction, but also may create some aspect of urethral coaptation or compression.
Midurethral slings were introduced nearly 20 years ago. These procedures can be performed with a local anesthetic or with minimal regional anesthesia – thus, in an outpatient setting. In addition, midurethral slings are associated with decreased pain and postoperative convalescence.
I have asked Dr. Eric Russell Sokol to lead this state-of-the-art discussion on midurethral slings. Dr. Sokol is an associate professor of obstetrics and gynecology, associate professor of urology (by courtesy), and cochief of the division of urogynecology and pelvic reconstructive surgery at Stanford (Calif.) University. He has published many articles regarding urogynecology and minimally invasive surgery. Dr. Sokol has been awarded numerous teaching awards, and he is a reviewer for multiple prestigious, peer-reviewed journals. It is a pleasure and an honor to welcome Dr. Sokol to this edition of Master Class in Gynecologic Surgery, the second installment on urinary incontinence.
Dr. Miller is clinical associate professor at the University of Illinois at Chicago, immediate past president of the International Society for Gynecologic Endoscopy (ISGE), and a past president of the AAGL. He is a reproductive endocrinologist and minimally invasive gynecologic surgeon in private practice in Naperville, Ill., and Schaumburg, Ill.; the director of minimally invasive gynecologic surgery and the director of the AAGL/SRS fellowship in minimally invasive gynecologic surgery at Advocate Lutheran General Hospital, Park Ridge, Ill.; and the medical editor of this column, Master Class. Dr. Miller is a consultant and on the speaker’s bureau for Ethicon.
Repeat BMD screening not helpful for women under 65
Postmenopausal women without osteoporosis on their first bone mineral density test are unlikely to fracture before age 65, and are therefore unlikely to benefit from regular or repeated screening before that age, according to an analysis of results from a large cohort study.
“Our data can help inform a BMD testing interval for postmenopausal women who are screened before age 65 years. Using the more conservative time estimates for major osteoporotic fracture, clinicians might allow women aged 50 to 54 years without osteoporosis on their first BMD test to wait 10 years for their next test. Similarly, women aged 60 to 64 years without osteoporosis on their first BMD test might wait until after age 65 years for their next test,” Dr. Margaret Lee Gourlay of the University of North Carolina, Chapel Hill, and her associates wrote in their analysis.
Dr. Gourlay and her coinvestigators on the larger Women’s Health Initiative cohort study looked at data from 4,068 postmenopausal women between the ages of 50 and 64 years. None of the women had prior hip or vertebral fractures or received antifracture treatment; they underwent baseline bone mineral density testing between 1993 and 2005. Fracture follow-up continued through 2012 (Menopause 2014 [doi: 10.1097/gme.0000000000000356]).
Among women with a normal BMD on first screening, the estimated time for 1% of those aged 50-54 years to have a hip or clinical vertebral fracture was 12.8 years. Among women aged 60-64 years, the time to fracture was 7.6 years, Dr. Gourlay and her colleagues found.
For the 8.5% of women in the cohort (all ages) with osteoporosis at baseline (n = 344), the age-adjusted time to hip or vertebral fracture was only 3 years.
Dr. Gourlay and her colleagues also estimated times to major osteoporotic fracture for 3% of the cohort, finding that it took 11.5 years for women aged 50-54 years to sustain a hip, clinical vertebral, proximal humerus, or wrist fracture, compared with 8.6 years for women who were 60-64 years at baseline. For women who had osteoporosis at baseline, the age-adjusted time for 3% to have an osteoporotic fracture was 2.5 years.
The researchers acknowledged as limitations of the study the fact that time estimates were based only on transitions to major fracture; that the full benefits and risks of screening, including cost-effectiveness, were not analyzed; and that the study was not powered to determine fracture risk in subgroups defined by individual risk factors.
Nonetheless, the results suggest that deferred repeat screening can be safe for postmenopausal women aged 50 years and older with normal BMD results at baseline, Dr. Gourlay and her coauthors wrote.
The study was funded by the National Institutes of Health. One of Dr. Gourlay’s coauthors is a consultant for MSD, and another reported receiving recent funding from Bone Ultrasound Finland.
This post hoc analysis of the Women’s Health Initiative cohort pursues the question of how frequently we should repeat BMD assessment on women under age 65 with normal baseline BMD. The study offers meaningful insight into how minuscule the fracture and osteoporosis risks are for women younger than 65 who have normal BMD at baseline. The younger cohort in this large study did not fracture or develop osteoporosis under surveillance to any significant extent.
While guidelines advise that women 65 and older be screened, as should younger postmenopausal women with risk factors, in clinical practice this often means that younger postmenopausal women with normal baseline BMD will enter into “autopilot” and undergo testing every 2 years. For young postmenopausal women with healthy BMD, we don’t need to fall into this default of biannual assessment. Clinicians could consider safely deferring a follow-up BMD test for young postmenopausal women with documented normal BMD for a few years, and for some even until age 65.
Nonetheless, clinicians should be mindful that this observational study was carried out in an asymptomatic group of women, and that the clinical picture should always guide the decision-making process on when and how often to screen.
Importantly, this study does not provide us any guidance regarding a young postmenopausal patient who has had a change in health status, such as a newly diagnosed autoimmune disease necessitating treatment with oral steroids, or after discontinuation of systemic menopausal hormone therapy, for whom repeating BMD assessment within 2 years or even 1 year of the initial study can be clinically justified despite evidence of normal BMD on her baseline scan.
Lubna Pal, M.D., is an associate director of obstetrics, gynecology, and reproductive sciences as well as director of the Menopause Program at Yale University in New Haven, Conn.
This post hoc analysis of the Women’s Health Initiative cohort pursues the question of how frequently we should repeat BMD assessment on women under age 65 with normal baseline BMD. The study offers meaningful insight into how minuscule the fracture and osteoporosis risks are for women younger than 65 who have normal BMD at baseline. The younger cohort in this large study did not fracture or develop osteoporosis under surveillance to any significant extent.
While guidelines advise that women 65 and older be screened, as should younger postmenopausal women with risk factors, in clinical practice this often means that younger postmenopausal women with normal baseline BMD will enter into “autopilot” and undergo testing every 2 years. For young postmenopausal women with healthy BMD, we don’t need to fall into this default of biannual assessment. Clinicians could consider safely deferring a follow-up BMD test for young postmenopausal women with documented normal BMD for a few years, and for some even until age 65.
Nonetheless, clinicians should be mindful that this observational study was carried out in an asymptomatic group of women, and that the clinical picture should always guide the decision-making process on when and how often to screen.
Importantly, this study does not provide us any guidance regarding a young postmenopausal patient who has had a change in health status, such as a newly diagnosed autoimmune disease necessitating treatment with oral steroids, or after discontinuation of systemic menopausal hormone therapy, for whom repeating BMD assessment within 2 years or even 1 year of the initial study can be clinically justified despite evidence of normal BMD on her baseline scan.
Lubna Pal, M.D., is an associate director of obstetrics, gynecology, and reproductive sciences as well as director of the Menopause Program at Yale University in New Haven, Conn.
This post hoc analysis of the Women’s Health Initiative cohort pursues the question of how frequently we should repeat BMD assessment on women under age 65 with normal baseline BMD. The study offers meaningful insight into how minuscule the fracture and osteoporosis risks are for women younger than 65 who have normal BMD at baseline. The younger cohort in this large study did not fracture or develop osteoporosis under surveillance to any significant extent.
While guidelines advise that women 65 and older be screened, as should younger postmenopausal women with risk factors, in clinical practice this often means that younger postmenopausal women with normal baseline BMD will enter into “autopilot” and undergo testing every 2 years. For young postmenopausal women with healthy BMD, we don’t need to fall into this default of biannual assessment. Clinicians could consider safely deferring a follow-up BMD test for young postmenopausal women with documented normal BMD for a few years, and for some even until age 65.
Nonetheless, clinicians should be mindful that this observational study was carried out in an asymptomatic group of women, and that the clinical picture should always guide the decision-making process on when and how often to screen.
Importantly, this study does not provide us any guidance regarding a young postmenopausal patient who has had a change in health status, such as a newly diagnosed autoimmune disease necessitating treatment with oral steroids, or after discontinuation of systemic menopausal hormone therapy, for whom repeating BMD assessment within 2 years or even 1 year of the initial study can be clinically justified despite evidence of normal BMD on her baseline scan.
Lubna Pal, M.D., is an associate director of obstetrics, gynecology, and reproductive sciences as well as director of the Menopause Program at Yale University in New Haven, Conn.
Postmenopausal women without osteoporosis on their first bone mineral density test are unlikely to fracture before age 65, and are therefore unlikely to benefit from regular or repeated screening before that age, according to an analysis of results from a large cohort study.
“Our data can help inform a BMD testing interval for postmenopausal women who are screened before age 65 years. Using the more conservative time estimates for major osteoporotic fracture, clinicians might allow women aged 50 to 54 years without osteoporosis on their first BMD test to wait 10 years for their next test. Similarly, women aged 60 to 64 years without osteoporosis on their first BMD test might wait until after age 65 years for their next test,” Dr. Margaret Lee Gourlay of the University of North Carolina, Chapel Hill, and her associates wrote in their analysis.
Dr. Gourlay and her coinvestigators on the larger Women’s Health Initiative cohort study looked at data from 4,068 postmenopausal women between the ages of 50 and 64 years. None of the women had prior hip or vertebral fractures or received antifracture treatment; they underwent baseline bone mineral density testing between 1993 and 2005. Fracture follow-up continued through 2012 (Menopause 2014 [doi: 10.1097/gme.0000000000000356]).
Among women with a normal BMD on first screening, the estimated time for 1% of those aged 50-54 years to have a hip or clinical vertebral fracture was 12.8 years. Among women aged 60-64 years, the time to fracture was 7.6 years, Dr. Gourlay and her colleagues found.
For the 8.5% of women in the cohort (all ages) with osteoporosis at baseline (n = 344), the age-adjusted time to hip or vertebral fracture was only 3 years.
Dr. Gourlay and her colleagues also estimated times to major osteoporotic fracture for 3% of the cohort, finding that it took 11.5 years for women aged 50-54 years to sustain a hip, clinical vertebral, proximal humerus, or wrist fracture, compared with 8.6 years for women who were 60-64 years at baseline. For women who had osteoporosis at baseline, the age-adjusted time for 3% to have an osteoporotic fracture was 2.5 years.
The researchers acknowledged as limitations of the study the fact that time estimates were based only on transitions to major fracture; that the full benefits and risks of screening, including cost-effectiveness, were not analyzed; and that the study was not powered to determine fracture risk in subgroups defined by individual risk factors.
Nonetheless, the results suggest that deferred repeat screening can be safe for postmenopausal women aged 50 years and older with normal BMD results at baseline, Dr. Gourlay and her coauthors wrote.
The study was funded by the National Institutes of Health. One of Dr. Gourlay’s coauthors is a consultant for MSD, and another reported receiving recent funding from Bone Ultrasound Finland.
Postmenopausal women without osteoporosis on their first bone mineral density test are unlikely to fracture before age 65, and are therefore unlikely to benefit from regular or repeated screening before that age, according to an analysis of results from a large cohort study.
“Our data can help inform a BMD testing interval for postmenopausal women who are screened before age 65 years. Using the more conservative time estimates for major osteoporotic fracture, clinicians might allow women aged 50 to 54 years without osteoporosis on their first BMD test to wait 10 years for their next test. Similarly, women aged 60 to 64 years without osteoporosis on their first BMD test might wait until after age 65 years for their next test,” Dr. Margaret Lee Gourlay of the University of North Carolina, Chapel Hill, and her associates wrote in their analysis.
Dr. Gourlay and her coinvestigators on the larger Women’s Health Initiative cohort study looked at data from 4,068 postmenopausal women between the ages of 50 and 64 years. None of the women had prior hip or vertebral fractures or received antifracture treatment; they underwent baseline bone mineral density testing between 1993 and 2005. Fracture follow-up continued through 2012 (Menopause 2014 [doi: 10.1097/gme.0000000000000356]).
Among women with a normal BMD on first screening, the estimated time for 1% of those aged 50-54 years to have a hip or clinical vertebral fracture was 12.8 years. Among women aged 60-64 years, the time to fracture was 7.6 years, Dr. Gourlay and her colleagues found.
For the 8.5% of women in the cohort (all ages) with osteoporosis at baseline (n = 344), the age-adjusted time to hip or vertebral fracture was only 3 years.
Dr. Gourlay and her colleagues also estimated times to major osteoporotic fracture for 3% of the cohort, finding that it took 11.5 years for women aged 50-54 years to sustain a hip, clinical vertebral, proximal humerus, or wrist fracture, compared with 8.6 years for women who were 60-64 years at baseline. For women who had osteoporosis at baseline, the age-adjusted time for 3% to have an osteoporotic fracture was 2.5 years.
The researchers acknowledged as limitations of the study the fact that time estimates were based only on transitions to major fracture; that the full benefits and risks of screening, including cost-effectiveness, were not analyzed; and that the study was not powered to determine fracture risk in subgroups defined by individual risk factors.
Nonetheless, the results suggest that deferred repeat screening can be safe for postmenopausal women aged 50 years and older with normal BMD results at baseline, Dr. Gourlay and her coauthors wrote.
The study was funded by the National Institutes of Health. One of Dr. Gourlay’s coauthors is a consultant for MSD, and another reported receiving recent funding from Bone Ultrasound Finland.
FROM MENOPAUSE
Key clinical point: Women under age 65 without risk factors whose first BMD screen is normal are not likely to benefit from repeat screening.
Major finding: Time to hip or vertebral fracture for 1% of women aged 50-54 years with normal BMD at baseline was 12.8 years, and 7.6 years for women aged 60-64 years, compared with 3 years for women aged 50-64 years with baseline osteoporosis.
Data source: An observational cohort of 4,068 women recruited as part of a larger trial cohort of postmenopausal women (n = 161,808) in the Women’s Health Initiative study.
Disclosures: The study was funded by the National Institutes of Health. One of Dr. Gourlay’s coauthors is a consultant for MSD, and another reported receiving recent funding from Bone Ultrasound Finland.
Neither aspirin nor clonidine reduced postoperative acute kidney injury
PHILADELPHIA- Neither perioperative aspirin nor clonidine reduced the risk of an acute kidney injury in patients who underwent major noncardiac surgery, a large randomized trial has determined.
The risk of an acute kidney injury (AKI) associated with aspirin was 10% more than placebo, and the risk with clonidine, 3% more, but those differences were not statistically significant, Dr. Amit X. Garg and associates wrote online in JAMA (JAMA 2015; doi:10.1001/jama.2014.15284).
Both drugs increased the risk of postoperative conditions that are associated with AKI, Dr. Garg of the London Health Sciences Centre and Western University, London, Ontario, and his co-authors noted. The study was simultaneously presented at Kidney Week 2014, which was sponsored by the American Society of Nephrology.
In fact, there was some suggestion that the drugs increased the risk of severe AKI, he said at the meeting. “But these were secondary measures and need to be interpreted cautiosuly, because the absolute number of severe AKIs was quite small.”
The AKI investigation was a substudy of the Perioperative Ischemia Evaluation-2, (POISE-2) trial, which evaluated the risk of 30-day mortality or nonfatal myocardial infarction among 6,905 surgical patients with a moderate to high risk of a perioperative cardiac event. The aspirin regimen called for 200 mg before surgery and then 100 mg daily for up to 30 days after surgery. The clonidine regimen was 0.2 mg orally 2-4 hours before surgery, followed by a 0.3 mg/day transdermal patch worn for 72 hours after surgery. Both groups also had a placebo arm.
The patients were a mean of 69 years old. Cardiovascular disease was present in about 30%; these included coronary artery disease, stroke, and peripheral vascular disease. About a quarter smoked; 36% had diabetes; 86% had hypertension; 2% had atrial fibrillation. Medications included COX-2 inhibitors; statins; ACE, ARB or direct renin inhibitors; and antihypertensives.
At baseline about 24% had an estimated glomerular filtration rate of 60 ml/min or lower per 1.73 m2.
Surgical procedures were urgent or emergent, major vascular, major thoracic, major urological or gynecologic, and other unspecified procedures.
Aspirin did not reduce the risk of an AKI compared to placebo. AKI occurred in 462 patients taking aspirin and 426 taking placebo (13.4% vs. 12.3% respectively; adjusted risk ratio 1.10). Nor did clonidine reduce the risk of AKI compared to placebo. AKI occurred in 449 taking aspirin and 439 taking placebo (13% and 12.7% respectively; adjusted risk ratio 1.03). Neither of these findings was statistically significant.
AKI-related dialysis within 30 days occurred in 0.6% those taking aspirin and 0.3% of the matched placebo patients - a nonsignificant difference. Serum creatinine increased a mean of 11% with aspirin vs. 11% with placebo.
Dialysis was necessary in 0.5% of those taking clonidine and 0.3% of the matched placebo patients - another nonsignificant finding. A history of preoperative chronic kidney disease did not alter either of these findings.
A post hoc analysis determined that both drugs increased the incidence of conditions known to boost the risk of kidney injury. Aspirin increased the risk of major bleeding, which was associated with a greater risk of AKI (23.3% when bleeding occurred vs 12.3% when it did not; adjusted risk ratio 2.20).
Because of this doubling of risk, Dr. Garg suggested moderating pre-operative aspirin exposure in these patients.
“Among patients taking aspirin as part of a long-term regimen, these results support holding it for at least 3 days before surgery and then restarting it a week after surgery,” he recommended.
Clonidine increased the risk of clinically important hypotension, which was also related in turn to AKI (14.3% when hypotension was present vs. 11.8% when it was not; adjusted risk ratio for AKI 1.34).
Dr. Garg had no financial disclosures. A number of the POISE-2 investigators reported financial relationships with pharmaceutical companies.
PHILADELPHIA- Neither perioperative aspirin nor clonidine reduced the risk of an acute kidney injury in patients who underwent major noncardiac surgery, a large randomized trial has determined.
The risk of an acute kidney injury (AKI) associated with aspirin was 10% more than placebo, and the risk with clonidine, 3% more, but those differences were not statistically significant, Dr. Amit X. Garg and associates wrote online in JAMA (JAMA 2015; doi:10.1001/jama.2014.15284).
Both drugs increased the risk of postoperative conditions that are associated with AKI, Dr. Garg of the London Health Sciences Centre and Western University, London, Ontario, and his co-authors noted. The study was simultaneously presented at Kidney Week 2014, which was sponsored by the American Society of Nephrology.
In fact, there was some suggestion that the drugs increased the risk of severe AKI, he said at the meeting. “But these were secondary measures and need to be interpreted cautiosuly, because the absolute number of severe AKIs was quite small.”
The AKI investigation was a substudy of the Perioperative Ischemia Evaluation-2, (POISE-2) trial, which evaluated the risk of 30-day mortality or nonfatal myocardial infarction among 6,905 surgical patients with a moderate to high risk of a perioperative cardiac event. The aspirin regimen called for 200 mg before surgery and then 100 mg daily for up to 30 days after surgery. The clonidine regimen was 0.2 mg orally 2-4 hours before surgery, followed by a 0.3 mg/day transdermal patch worn for 72 hours after surgery. Both groups also had a placebo arm.
The patients were a mean of 69 years old. Cardiovascular disease was present in about 30%; these included coronary artery disease, stroke, and peripheral vascular disease. About a quarter smoked; 36% had diabetes; 86% had hypertension; 2% had atrial fibrillation. Medications included COX-2 inhibitors; statins; ACE, ARB or direct renin inhibitors; and antihypertensives.
At baseline about 24% had an estimated glomerular filtration rate of 60 ml/min or lower per 1.73 m2.
Surgical procedures were urgent or emergent, major vascular, major thoracic, major urological or gynecologic, and other unspecified procedures.
Aspirin did not reduce the risk of an AKI compared to placebo. AKI occurred in 462 patients taking aspirin and 426 taking placebo (13.4% vs. 12.3% respectively; adjusted risk ratio 1.10). Nor did clonidine reduce the risk of AKI compared to placebo. AKI occurred in 449 taking aspirin and 439 taking placebo (13% and 12.7% respectively; adjusted risk ratio 1.03). Neither of these findings was statistically significant.
AKI-related dialysis within 30 days occurred in 0.6% those taking aspirin and 0.3% of the matched placebo patients - a nonsignificant difference. Serum creatinine increased a mean of 11% with aspirin vs. 11% with placebo.
Dialysis was necessary in 0.5% of those taking clonidine and 0.3% of the matched placebo patients - another nonsignificant finding. A history of preoperative chronic kidney disease did not alter either of these findings.
A post hoc analysis determined that both drugs increased the incidence of conditions known to boost the risk of kidney injury. Aspirin increased the risk of major bleeding, which was associated with a greater risk of AKI (23.3% when bleeding occurred vs 12.3% when it did not; adjusted risk ratio 2.20).
Because of this doubling of risk, Dr. Garg suggested moderating pre-operative aspirin exposure in these patients.
“Among patients taking aspirin as part of a long-term regimen, these results support holding it for at least 3 days before surgery and then restarting it a week after surgery,” he recommended.
Clonidine increased the risk of clinically important hypotension, which was also related in turn to AKI (14.3% when hypotension was present vs. 11.8% when it was not; adjusted risk ratio for AKI 1.34).
Dr. Garg had no financial disclosures. A number of the POISE-2 investigators reported financial relationships with pharmaceutical companies.
PHILADELPHIA- Neither perioperative aspirin nor clonidine reduced the risk of an acute kidney injury in patients who underwent major noncardiac surgery, a large randomized trial has determined.
The risk of an acute kidney injury (AKI) associated with aspirin was 10% more than placebo, and the risk with clonidine, 3% more, but those differences were not statistically significant, Dr. Amit X. Garg and associates wrote online in JAMA (JAMA 2015; doi:10.1001/jama.2014.15284).
Both drugs increased the risk of postoperative conditions that are associated with AKI, Dr. Garg of the London Health Sciences Centre and Western University, London, Ontario, and his co-authors noted. The study was simultaneously presented at Kidney Week 2014, which was sponsored by the American Society of Nephrology.
In fact, there was some suggestion that the drugs increased the risk of severe AKI, he said at the meeting. “But these were secondary measures and need to be interpreted cautiosuly, because the absolute number of severe AKIs was quite small.”
The AKI investigation was a substudy of the Perioperative Ischemia Evaluation-2, (POISE-2) trial, which evaluated the risk of 30-day mortality or nonfatal myocardial infarction among 6,905 surgical patients with a moderate to high risk of a perioperative cardiac event. The aspirin regimen called for 200 mg before surgery and then 100 mg daily for up to 30 days after surgery. The clonidine regimen was 0.2 mg orally 2-4 hours before surgery, followed by a 0.3 mg/day transdermal patch worn for 72 hours after surgery. Both groups also had a placebo arm.
The patients were a mean of 69 years old. Cardiovascular disease was present in about 30%; these included coronary artery disease, stroke, and peripheral vascular disease. About a quarter smoked; 36% had diabetes; 86% had hypertension; 2% had atrial fibrillation. Medications included COX-2 inhibitors; statins; ACE, ARB or direct renin inhibitors; and antihypertensives.
At baseline about 24% had an estimated glomerular filtration rate of 60 ml/min or lower per 1.73 m2.
Surgical procedures were urgent or emergent, major vascular, major thoracic, major urological or gynecologic, and other unspecified procedures.
Aspirin did not reduce the risk of an AKI compared to placebo. AKI occurred in 462 patients taking aspirin and 426 taking placebo (13.4% vs. 12.3% respectively; adjusted risk ratio 1.10). Nor did clonidine reduce the risk of AKI compared to placebo. AKI occurred in 449 taking aspirin and 439 taking placebo (13% and 12.7% respectively; adjusted risk ratio 1.03). Neither of these findings was statistically significant.
AKI-related dialysis within 30 days occurred in 0.6% those taking aspirin and 0.3% of the matched placebo patients - a nonsignificant difference. Serum creatinine increased a mean of 11% with aspirin vs. 11% with placebo.
Dialysis was necessary in 0.5% of those taking clonidine and 0.3% of the matched placebo patients - another nonsignificant finding. A history of preoperative chronic kidney disease did not alter either of these findings.
A post hoc analysis determined that both drugs increased the incidence of conditions known to boost the risk of kidney injury. Aspirin increased the risk of major bleeding, which was associated with a greater risk of AKI (23.3% when bleeding occurred vs 12.3% when it did not; adjusted risk ratio 2.20).
Because of this doubling of risk, Dr. Garg suggested moderating pre-operative aspirin exposure in these patients.
“Among patients taking aspirin as part of a long-term regimen, these results support holding it for at least 3 days before surgery and then restarting it a week after surgery,” he recommended.
Clonidine increased the risk of clinically important hypotension, which was also related in turn to AKI (14.3% when hypotension was present vs. 11.8% when it was not; adjusted risk ratio for AKI 1.34).
Dr. Garg had no financial disclosures. A number of the POISE-2 investigators reported financial relationships with pharmaceutical companies.
AT KIDNEY WEEK 2014
Key clinical point: Perioperative treatment with either aspirin or clonidine did not lead to improvements in the risk of postoperative acute kidney injury.
Major finding: Compared to palcebo, the relative risk of acute kidney injury with aspirin was 1.10; it was 1.03 with clonidine.
Data source: The POISE-2 substudy comprised 6,905 patients who were randomized to aspirin, clonidine, or placebo.
Disclosures: Dr. Garg had no financial disclosures. Anumber of the POISE-2 investigators declared financial relationships with pharmaceutical companies.