Stroke

New risk equations can help determine the need for a first coronary artery calcium (CAC) scan in young adults to identify those most at risk for premature atherosclerosis, researchers say.

“To our knowledge this is the first time to derive a clinical risk equation for the initial conversion from CAC 0, which can be used actually to guide the timing of CAC testing in young adults,” Omar Dzaye, MD, MPH, PhD, Johns Hopkins University School of Medicine, Baltimore, said in an interview.

CAC is an independent predictor of adverse atherosclerotic cardiovascular disease (ASCVD), but routine screening is not recommended in low-risk groups. U.S. guidelines say CAC testing may be considered (class IIa) for risk stratification in adults 40 to 75 years at intermediate risk (estimated 10-year ASCVD risk 7.5% to 20%) when the decision to start preventive therapies is unclear.

The new sex-specific risk equations were derived from 22,346 adults 30 to 50 years of age who underwent CAC testing between 1991 and 2010 for ASCVD risk prediction at four high-volume centers in the CAC Consortium. The average age was 43.5 years, 25% were women, and 12.3% were non-White.

The participants were free of clinical ASCVD or CV symptoms at the time of scanning but had underlying traditional ASCVD risk factors (dyslipidemia in 49.6%, hypertension in 20.0%, active smokers 11.0%, and diabetes in 4.0%), an intermediate 10-year ASCVD risk (2.6%), and/or a significant family history of CHD (49.3%).

As reported in the Journal of the American College of Cardiology, 92.7% of participants had a low 10-year ASCVD risk below 5%, but 34.4% had CAC scores above 0 (median, 20 Agatston units).

Assuming a 25% testing yield (number needed to scan equals four to detect one CAC score above 0), the optimal age for a first scan in young men without risk factors was 42.3 years, and for women it was 57.6 years.

Young adults with one or more risk factors, however, would convert to CAC above 0 at least 3.3 years earlier on average. Diabetes had the strongest influence on the probability of conversion, with men and women predicted to develop incident CAC a respective 5.5 years and 7.3 years earlier on average.

The findings build on previous observations by the team showing that diabetes confers a 40% reduction in the so-called “warranty period” of a CAC score of 0, Dr. Dzaye noted. The National Lipid Association 2020 statement on CAC scoring also suggests it’s reasonable to obtain a CAC scan in people with diabetes aged 30 to 39 years.

“The predicted utility of CAC for ASCVD outcomes is similar in type 1 and type 2 diabetes; however, individuals with type 1 diabetes may actually develop CAC as young as 17 years of age,” he said. “Therefore, definitely, CAC studies in this population are required.”

In contrast, hypertension, dyslipidemia, active smoking, and a family history of CHD were individually associated with the development of CAC 3.3 to 4.3 years earlier. In general, the time to premature CAC was longer for women than for men with a given risk-factor profile.

The predicted age for a first CAC was 37.5 years for men and 48.9 years for women with an intermediate risk-factor profile (for example, smoking plus hypertension) and 33.8 years and 44.7 years, respectively, for those with a high-risk profile (for example, diabetes plus dyslipidemia).

Asked whether the risk equations can be used to guide CAC scanning in clinical practice, Dr. Dzaye said, “we very much believe that this can be used because for the process we published the internal validation, and we also did an external validation that is not published at the moment in [the] MESA [trial].”

He pointed out that study participants did not have a second CAC scan for true modeling of longitudinal CAC and do not represent the general population but, rather, a general cardiology referral population enriched with ASCVD risk factors. Future studies are needed that incorporate a more diverse population, multiple CAC scans, and genetic risk factors.

“This is helpful from a descriptive, epidemiologic point of view and helps us understand the approximate prevalence of coronary calcium greater than 0 in younger men and women, but I’m not convinced that it will or should change clinical practice,” cardiologist Philip Greenland, MD, a professor of preventive medicine and professor of medicine at Northwestern University in Chicago, said in an interview.

Dr. Greenland, who coauthored a review on CAC testing earlier this month, said CAC is the strongest tool we have to improve risk prediction beyond standard risk scores but does involve radiation exposure and some added costs. CAC testing is especially useful as a tiebreaker in older intermediate-risk patients who may be on the fence about starting primary prevention medications but could fall short among “younger, low-risk patients where, as they show here, the proportion of people who have a positive test is well below half.”

“So that means you’re going to have a very large number of people who are CAC 0, which is what we would expect in relatively younger people, but I wouldn’t be happy to try to explain that to a patient: ‘We’re not seeing coronary atherosclerosis right now, but we still want to treat your risk factors.’ That’s kind of a dissonant message,” Dr. Greenland said.

An accompanying editorial suggests “the study has filled an important clinical gap, providing highly actionable data that could help guide clinical decision making for ASCVD prevention.”

Nevertheless, Tasneem Naqvi, MD, Mayo Clinic, Scottsdale, Arizona, and Tamar Polonsky, MD, University of Chicago, question the generalizability of the results and point out that CAC screening at the authors’ recommended ages “could still miss a substantial number of young women with incident MI.”

Exposure to ionizing radiation with CAC is lower than that used in screening mammography for breast cancer but, they agree, should be considered, particularly in young women.

“Alternatively, ultrasonography avoids radiation altogether and can detect plaque earlier than the development of CAC,” write Dr. Naqvi and Dr. Polonsky. Further, the 2019 European Society of Cardiology guidelines for CV risk give ultrasound assessment of carotid artery and femoral plaque a class IIa recommendation and CAC a class IIb recommendation.

Commenting for this news organization, Roger Blumenthal, MD, director of the Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, said the class IIb recommendation “never really made any sense because the data with coronary calcium is so much stronger than it is with carotid ultrasound.”

“Sometimes smart scientists and researchers differ, but in my strong opinion, the European Society of Cardiology in 2019 did not give it the right classification, while the group I was part of, the American Heart Association/American College of Cardiology [2019 guideline], got it right and emphasized that this is the most cost-effective and useful way to improve risk assessment.”

Dr. Blumenthal, who was not part of the study, noted that U.S. guidelines say CAC measurement is not intended as a screening test for everyone but may be used selectively as a decision aid.

“This study adds to the information about how to use that type of testing. So, I personally think it will be a highly referenced article in the next set of guidelines that the American Heart Association, American College of Cardiology, and other organizations have.”

The study was supported in part by a research grant from the National Institutes of Health National Heart, Lung, and Blood Institute. Dr. Dzaye, Dr. Blumenthal, Dr. Naqvi, and Dr. Polonsky report having no relevant financial relationships.

A version of this article appeared on Medscape.com.

New risk equations can help determine the need for a first coronary artery calcium (CAC) scan in young adults to identify those most at risk for premature atherosclerosis, researchers say.

“To our knowledge this is the first time to derive a clinical risk equation for the initial conversion from CAC 0, which can be used actually to guide the timing of CAC testing in young adults,” Omar Dzaye, MD, MPH, PhD, Johns Hopkins University School of Medicine, Baltimore, said in an interview.

CAC is an independent predictor of adverse atherosclerotic cardiovascular disease (ASCVD), but routine screening is not recommended in low-risk groups. U.S. guidelines say CAC testing may be considered (class IIa) for risk stratification in adults 40 to 75 years at intermediate risk (estimated 10-year ASCVD risk 7.5% to 20%) when the decision to start preventive therapies is unclear.

The new sex-specific risk equations were derived from 22,346 adults 30 to 50 years of age who underwent CAC testing between 1991 and 2010 for ASCVD risk prediction at four high-volume centers in the CAC Consortium. The average age was 43.5 years, 25% were women, and 12.3% were non-White.

The participants were free of clinical ASCVD or CV symptoms at the time of scanning but had underlying traditional ASCVD risk factors (dyslipidemia in 49.6%, hypertension in 20.0%, active smokers 11.0%, and diabetes in 4.0%), an intermediate 10-year ASCVD risk (2.6%), and/or a significant family history of CHD (49.3%).

As reported in the Journal of the American College of Cardiology, 92.7% of participants had a low 10-year ASCVD risk below 5%, but 34.4% had CAC scores above 0 (median, 20 Agatston units).

Assuming a 25% testing yield (number needed to scan equals four to detect one CAC score above 0), the optimal age for a first scan in young men without risk factors was 42.3 years, and for women it was 57.6 years.

Young adults with one or more risk factors, however, would convert to CAC above 0 at least 3.3 years earlier on average. Diabetes had the strongest influence on the probability of conversion, with men and women predicted to develop incident CAC a respective 5.5 years and 7.3 years earlier on average.

The findings build on previous observations by the team showing that diabetes confers a 40% reduction in the so-called “warranty period” of a CAC score of 0, Dr. Dzaye noted. The National Lipid Association 2020 statement on CAC scoring also suggests it’s reasonable to obtain a CAC scan in people with diabetes aged 30 to 39 years.

“The predicted utility of CAC for ASCVD outcomes is similar in type 1 and type 2 diabetes; however, individuals with type 1 diabetes may actually develop CAC as young as 17 years of age,” he said. “Therefore, definitely, CAC studies in this population are required.”

In contrast, hypertension, dyslipidemia, active smoking, and a family history of CHD were individually associated with the development of CAC 3.3 to 4.3 years earlier. In general, the time to premature CAC was longer for women than for men with a given risk-factor profile.

The predicted age for a first CAC was 37.5 years for men and 48.9 years for women with an intermediate risk-factor profile (for example, smoking plus hypertension) and 33.8 years and 44.7 years, respectively, for those with a high-risk profile (for example, diabetes plus dyslipidemia).

Asked whether the risk equations can be used to guide CAC scanning in clinical practice, Dr. Dzaye said, “we very much believe that this can be used because for the process we published the internal validation, and we also did an external validation that is not published at the moment in [the] MESA [trial].”

He pointed out that study participants did not have a second CAC scan for true modeling of longitudinal CAC and do not represent the general population but, rather, a general cardiology referral population enriched with ASCVD risk factors. Future studies are needed that incorporate a more diverse population, multiple CAC scans, and genetic risk factors.

“This is helpful from a descriptive, epidemiologic point of view and helps us understand the approximate prevalence of coronary calcium greater than 0 in younger men and women, but I’m not convinced that it will or should change clinical practice,” cardiologist Philip Greenland, MD, a professor of preventive medicine and professor of medicine at Northwestern University in Chicago, said in an interview.

Dr. Greenland, who coauthored a review on CAC testing earlier this month, said CAC is the strongest tool we have to improve risk prediction beyond standard risk scores but does involve radiation exposure and some added costs. CAC testing is especially useful as a tiebreaker in older intermediate-risk patients who may be on the fence about starting primary prevention medications but could fall short among “younger, low-risk patients where, as they show here, the proportion of people who have a positive test is well below half.”

“So that means you’re going to have a very large number of people who are CAC 0, which is what we would expect in relatively younger people, but I wouldn’t be happy to try to explain that to a patient: ‘We’re not seeing coronary atherosclerosis right now, but we still want to treat your risk factors.’ That’s kind of a dissonant message,” Dr. Greenland said.

An accompanying editorial suggests “the study has filled an important clinical gap, providing highly actionable data that could help guide clinical decision making for ASCVD prevention.”

Nevertheless, Tasneem Naqvi, MD, Mayo Clinic, Scottsdale, Arizona, and Tamar Polonsky, MD, University of Chicago, question the generalizability of the results and point out that CAC screening at the authors’ recommended ages “could still miss a substantial number of young women with incident MI.”

Exposure to ionizing radiation with CAC is lower than that used in screening mammography for breast cancer but, they agree, should be considered, particularly in young women.

“Alternatively, ultrasonography avoids radiation altogether and can detect plaque earlier than the development of CAC,” write Dr. Naqvi and Dr. Polonsky. Further, the 2019 European Society of Cardiology guidelines for CV risk give ultrasound assessment of carotid artery and femoral plaque a class IIa recommendation and CAC a class IIb recommendation.

Commenting for this news organization, Roger Blumenthal, MD, director of the Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, said the class IIb recommendation “never really made any sense because the data with coronary calcium is so much stronger than it is with carotid ultrasound.”

“Sometimes smart scientists and researchers differ, but in my strong opinion, the European Society of Cardiology in 2019 did not give it the right classification, while the group I was part of, the American Heart Association/American College of Cardiology [2019 guideline], got it right and emphasized that this is the most cost-effective and useful way to improve risk assessment.”

Dr. Blumenthal, who was not part of the study, noted that U.S. guidelines say CAC measurement is not intended as a screening test for everyone but may be used selectively as a decision aid.

“This study adds to the information about how to use that type of testing. So, I personally think it will be a highly referenced article in the next set of guidelines that the American Heart Association, American College of Cardiology, and other organizations have.”

The study was supported in part by a research grant from the National Institutes of Health National Heart, Lung, and Blood Institute. Dr. Dzaye, Dr. Blumenthal, Dr. Naqvi, and Dr. Polonsky report having no relevant financial relationships.

A version of this article appeared on Medscape.com.

New risk equations can help determine the need for a first coronary artery calcium (CAC) scan in young adults to identify those most at risk for premature atherosclerosis, researchers say.

“To our knowledge this is the first time to derive a clinical risk equation for the initial conversion from CAC 0, which can be used actually to guide the timing of CAC testing in young adults,” Omar Dzaye, MD, MPH, PhD, Johns Hopkins University School of Medicine, Baltimore, said in an interview.

CAC is an independent predictor of adverse atherosclerotic cardiovascular disease (ASCVD), but routine screening is not recommended in low-risk groups. U.S. guidelines say CAC testing may be considered (class IIa) for risk stratification in adults 40 to 75 years at intermediate risk (estimated 10-year ASCVD risk 7.5% to 20%) when the decision to start preventive therapies is unclear.

The new sex-specific risk equations were derived from 22,346 adults 30 to 50 years of age who underwent CAC testing between 1991 and 2010 for ASCVD risk prediction at four high-volume centers in the CAC Consortium. The average age was 43.5 years, 25% were women, and 12.3% were non-White.

The participants were free of clinical ASCVD or CV symptoms at the time of scanning but had underlying traditional ASCVD risk factors (dyslipidemia in 49.6%, hypertension in 20.0%, active smokers 11.0%, and diabetes in 4.0%), an intermediate 10-year ASCVD risk (2.6%), and/or a significant family history of CHD (49.3%).

As reported in the Journal of the American College of Cardiology, 92.7% of participants had a low 10-year ASCVD risk below 5%, but 34.4% had CAC scores above 0 (median, 20 Agatston units).

Assuming a 25% testing yield (number needed to scan equals four to detect one CAC score above 0), the optimal age for a first scan in young men without risk factors was 42.3 years, and for women it was 57.6 years.

Young adults with one or more risk factors, however, would convert to CAC above 0 at least 3.3 years earlier on average. Diabetes had the strongest influence on the probability of conversion, with men and women predicted to develop incident CAC a respective 5.5 years and 7.3 years earlier on average.

The findings build on previous observations by the team showing that diabetes confers a 40% reduction in the so-called “warranty period” of a CAC score of 0, Dr. Dzaye noted. The National Lipid Association 2020 statement on CAC scoring also suggests it’s reasonable to obtain a CAC scan in people with diabetes aged 30 to 39 years.

“The predicted utility of CAC for ASCVD outcomes is similar in type 1 and type 2 diabetes; however, individuals with type 1 diabetes may actually develop CAC as young as 17 years of age,” he said. “Therefore, definitely, CAC studies in this population are required.”

In contrast, hypertension, dyslipidemia, active smoking, and a family history of CHD were individually associated with the development of CAC 3.3 to 4.3 years earlier. In general, the time to premature CAC was longer for women than for men with a given risk-factor profile.

The predicted age for a first CAC was 37.5 years for men and 48.9 years for women with an intermediate risk-factor profile (for example, smoking plus hypertension) and 33.8 years and 44.7 years, respectively, for those with a high-risk profile (for example, diabetes plus dyslipidemia).

Asked whether the risk equations can be used to guide CAC scanning in clinical practice, Dr. Dzaye said, “we very much believe that this can be used because for the process we published the internal validation, and we also did an external validation that is not published at the moment in [the] MESA [trial].”

He pointed out that study participants did not have a second CAC scan for true modeling of longitudinal CAC and do not represent the general population but, rather, a general cardiology referral population enriched with ASCVD risk factors. Future studies are needed that incorporate a more diverse population, multiple CAC scans, and genetic risk factors.

“This is helpful from a descriptive, epidemiologic point of view and helps us understand the approximate prevalence of coronary calcium greater than 0 in younger men and women, but I’m not convinced that it will or should change clinical practice,” cardiologist Philip Greenland, MD, a professor of preventive medicine and professor of medicine at Northwestern University in Chicago, said in an interview.

Dr. Greenland, who coauthored a review on CAC testing earlier this month, said CAC is the strongest tool we have to improve risk prediction beyond standard risk scores but does involve radiation exposure and some added costs. CAC testing is especially useful as a tiebreaker in older intermediate-risk patients who may be on the fence about starting primary prevention medications but could fall short among “younger, low-risk patients where, as they show here, the proportion of people who have a positive test is well below half.”

“So that means you’re going to have a very large number of people who are CAC 0, which is what we would expect in relatively younger people, but I wouldn’t be happy to try to explain that to a patient: ‘We’re not seeing coronary atherosclerosis right now, but we still want to treat your risk factors.’ That’s kind of a dissonant message,” Dr. Greenland said.

An accompanying editorial suggests “the study has filled an important clinical gap, providing highly actionable data that could help guide clinical decision making for ASCVD prevention.”

Nevertheless, Tasneem Naqvi, MD, Mayo Clinic, Scottsdale, Arizona, and Tamar Polonsky, MD, University of Chicago, question the generalizability of the results and point out that CAC screening at the authors’ recommended ages “could still miss a substantial number of young women with incident MI.”

Exposure to ionizing radiation with CAC is lower than that used in screening mammography for breast cancer but, they agree, should be considered, particularly in young women.

“Alternatively, ultrasonography avoids radiation altogether and can detect plaque earlier than the development of CAC,” write Dr. Naqvi and Dr. Polonsky. Further, the 2019 European Society of Cardiology guidelines for CV risk give ultrasound assessment of carotid artery and femoral plaque a class IIa recommendation and CAC a class IIb recommendation.

Commenting for this news organization, Roger Blumenthal, MD, director of the Johns Hopkins Ciccarone Center for the Prevention of Cardiovascular Disease, said the class IIb recommendation “never really made any sense because the data with coronary calcium is so much stronger than it is with carotid ultrasound.”

“Sometimes smart scientists and researchers differ, but in my strong opinion, the European Society of Cardiology in 2019 did not give it the right classification, while the group I was part of, the American Heart Association/American College of Cardiology [2019 guideline], got it right and emphasized that this is the most cost-effective and useful way to improve risk assessment.”

Dr. Blumenthal, who was not part of the study, noted that U.S. guidelines say CAC measurement is not intended as a screening test for everyone but may be used selectively as a decision aid.

“This study adds to the information about how to use that type of testing. So, I personally think it will be a highly referenced article in the next set of guidelines that the American Heart Association, American College of Cardiology, and other organizations have.”

The study was supported in part by a research grant from the National Institutes of Health National Heart, Lung, and Blood Institute. Dr. Dzaye, Dr. Blumenthal, Dr. Naqvi, and Dr. Polonsky report having no relevant financial relationships.

A version of this article appeared on Medscape.com.

The Food and Drug Administration has issued voluntary, short-term sodium reduction targets for food manufacturers, chain restaurants, and food service operators for processed, packaged, and prepared foods, with an eye toward reducing diet-related conditions such as heart disease and obesity.

According to the FDA, more than 70% of total sodium intake is from sodium added during food manufacturing and commercial food preparation.

The new targets seek to decrease average sodium intake from approximately 3,400 mg/day to 3,000 mg/day, about a 12% reduction, over the next 2.5 years, acting FDA Commissioner Janet Woodcock, MD, and Susan Mayne, PhD, director of the FDA’s Center for Food Safety and Applied Nutrition, said in joint statement.

Although this reduction keeps the average intake above the recommended limit of 2,300 mg/day for individuals 14 years and older as per the Dietary Guidelines for Americans, “we know that even these modest reductions made slowly over the next few years will substantially decrease diet-related diseases,” they added.

The FDA first proposed recommendations for reducing sodium content in draft guidance released in 2016.

Since, then a number of companies in the food industry have already made changes to sodium content in their products, “which is encouraging, but additional support across all types of foods to help consumers meet recommended sodium limits is needed,” Dr. Woodcock and Dr. Mayne said.

They emphasized that the new guidance represents short-term goals that the food industry should work to meet as soon as possible to help optimize public health.

“We will continue our discussions with the food industry as we monitor the sodium content of the food supply to evaluate progress. In the future, we plan to issue revised, subsequent targets to further lower the sodium content incrementally and continue to help reduce sodium intake,” Dr. Woodcock and Dr. Mayne said.
 

AHA: A good first step that does not go far enough

In a statement, the American Heart Association said the new targets will play “a critical role in helping people across the country achieve healthier levels of sodium and improved well-being overall. These targets will be an important driver to reduce sodium consumption, which can have significant health benefits and lead to lower medical costs.”

“Lowering sodium levels in the food supply would reduce risk of hypertension, heart disease, stroke, heart attack, and death in addition to saving billions of dollars in health care costs over the next decade,” the AHA said.

But the AHA also said lowering sodium intake to 3,000 mg/day is not enough.

“Lowering sodium further to 2,300 mg could prevent an estimated 450,000 cases of cardiovascular disease, gain 2 million quality-adjusted life-years, and save approximately $40 billion in health care costs over a 20-year period,” the AHA said.

The AHA is urging the FDA to “follow [this] action with additional targets to further lower the amount of sodium in the food supply and help people in America attain an appropriate sodium intake.”

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

The Food and Drug Administration has issued voluntary, short-term sodium reduction targets for food manufacturers, chain restaurants, and food service operators for processed, packaged, and prepared foods, with an eye toward reducing diet-related conditions such as heart disease and obesity.

According to the FDA, more than 70% of total sodium intake is from sodium added during food manufacturing and commercial food preparation.

The new targets seek to decrease average sodium intake from approximately 3,400 mg/day to 3,000 mg/day, about a 12% reduction, over the next 2.5 years, acting FDA Commissioner Janet Woodcock, MD, and Susan Mayne, PhD, director of the FDA’s Center for Food Safety and Applied Nutrition, said in joint statement.

Although this reduction keeps the average intake above the recommended limit of 2,300 mg/day for individuals 14 years and older as per the Dietary Guidelines for Americans, “we know that even these modest reductions made slowly over the next few years will substantially decrease diet-related diseases,” they added.

The FDA first proposed recommendations for reducing sodium content in draft guidance released in 2016.

Since, then a number of companies in the food industry have already made changes to sodium content in their products, “which is encouraging, but additional support across all types of foods to help consumers meet recommended sodium limits is needed,” Dr. Woodcock and Dr. Mayne said.

They emphasized that the new guidance represents short-term goals that the food industry should work to meet as soon as possible to help optimize public health.

“We will continue our discussions with the food industry as we monitor the sodium content of the food supply to evaluate progress. In the future, we plan to issue revised, subsequent targets to further lower the sodium content incrementally and continue to help reduce sodium intake,” Dr. Woodcock and Dr. Mayne said.
 

AHA: A good first step that does not go far enough

In a statement, the American Heart Association said the new targets will play “a critical role in helping people across the country achieve healthier levels of sodium and improved well-being overall. These targets will be an important driver to reduce sodium consumption, which can have significant health benefits and lead to lower medical costs.”

“Lowering sodium levels in the food supply would reduce risk of hypertension, heart disease, stroke, heart attack, and death in addition to saving billions of dollars in health care costs over the next decade,” the AHA said.

But the AHA also said lowering sodium intake to 3,000 mg/day is not enough.

“Lowering sodium further to 2,300 mg could prevent an estimated 450,000 cases of cardiovascular disease, gain 2 million quality-adjusted life-years, and save approximately $40 billion in health care costs over a 20-year period,” the AHA said.

The AHA is urging the FDA to “follow [this] action with additional targets to further lower the amount of sodium in the food supply and help people in America attain an appropriate sodium intake.”

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

The Food and Drug Administration has issued voluntary, short-term sodium reduction targets for food manufacturers, chain restaurants, and food service operators for processed, packaged, and prepared foods, with an eye toward reducing diet-related conditions such as heart disease and obesity.

According to the FDA, more than 70% of total sodium intake is from sodium added during food manufacturing and commercial food preparation.

The new targets seek to decrease average sodium intake from approximately 3,400 mg/day to 3,000 mg/day, about a 12% reduction, over the next 2.5 years, acting FDA Commissioner Janet Woodcock, MD, and Susan Mayne, PhD, director of the FDA’s Center for Food Safety and Applied Nutrition, said in joint statement.

Although this reduction keeps the average intake above the recommended limit of 2,300 mg/day for individuals 14 years and older as per the Dietary Guidelines for Americans, “we know that even these modest reductions made slowly over the next few years will substantially decrease diet-related diseases,” they added.

The FDA first proposed recommendations for reducing sodium content in draft guidance released in 2016.

Since, then a number of companies in the food industry have already made changes to sodium content in their products, “which is encouraging, but additional support across all types of foods to help consumers meet recommended sodium limits is needed,” Dr. Woodcock and Dr. Mayne said.

They emphasized that the new guidance represents short-term goals that the food industry should work to meet as soon as possible to help optimize public health.

“We will continue our discussions with the food industry as we monitor the sodium content of the food supply to evaluate progress. In the future, we plan to issue revised, subsequent targets to further lower the sodium content incrementally and continue to help reduce sodium intake,” Dr. Woodcock and Dr. Mayne said.
 

AHA: A good first step that does not go far enough

In a statement, the American Heart Association said the new targets will play “a critical role in helping people across the country achieve healthier levels of sodium and improved well-being overall. These targets will be an important driver to reduce sodium consumption, which can have significant health benefits and lead to lower medical costs.”

“Lowering sodium levels in the food supply would reduce risk of hypertension, heart disease, stroke, heart attack, and death in addition to saving billions of dollars in health care costs over the next decade,” the AHA said.

But the AHA also said lowering sodium intake to 3,000 mg/day is not enough.

“Lowering sodium further to 2,300 mg could prevent an estimated 450,000 cases of cardiovascular disease, gain 2 million quality-adjusted life-years, and save approximately $40 billion in health care costs over a 20-year period,” the AHA said.

The AHA is urging the FDA to “follow [this] action with additional targets to further lower the amount of sodium in the food supply and help people in America attain an appropriate sodium intake.”

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

Discovery of substantial atrial fibrillation (AFib) is usually an indication to start oral anticoagulation (OAC) for stroke prevention, but it’s far from settled whether such AFib is actually a direct cause of thromboembolic stroke. And that has implications for whether patients with occasional bouts of the arrhythmia need to be on continuous OAC.  

It’s possible that some with infrequent paroxysmal AFib can get away with OAC maintained only about as long as the arrhythmia persists, and then go off the drugs, say researchers based on their study, which, they caution, would need the support of prospective trials before such a strategy could be considered.

But importantly, in their patients who had been continuously monitored by their cardiac implantable electronic devices (CIEDs) prior to experiencing a stroke, the 30-day risk of that stroke more than tripled if their AFib burden on 1 day reached at least 5-6 hours. The risk jumped especially high within the first few days after accumulating that amount of AFib in a day, but then fell off sharply over the next few days.

Based on the study, “Your risk of stroke goes up acutely when you have an episode of AFib, and it decreases rapidly, back to baseline – certainly by 30 days and it looked like in our data by 5 days,” Daniel E. Singer, MD, of Massachusetts General Hospital, Boston, said in an interview.

Increasingly, he noted, “there’s a widespread belief that AFib is a risk marker, not a causal risk factor.” In that scenario, most embolic strokes are caused by thrombi formed as a result of an atrial myopathy, characterized by fibrosis and inflammation, that also happens to trigger AFib.

But the current findings are, “from a mechanistic point of view, very much in favor of AFib being a causal risk factor, acutely raising the risk of stroke,” said Dr. Singer, who is lead author on the analysis published online Sept. 29 in JAMA Cardiology.

Some studies have “shown that anticoagulants seem to lower stroke risk even in patients without atrial fib, and even from sources not likely to be coming from the atrium,” Mintu P. Turakhia, MD, of Stanford (Calif.) University, Palo Alto, said in an interview. Collectively they point to “atrial fibrillation as a cause of and a noncausal marker for stroke.”

For example, Dr. Turakhia pointed out in an editorial accompanying the current report that stroke in patients with CIEDs “may occur during prolonged periods of sinus rhythm.”

The current study, he said in an interview, doesn’t preclude atrial myopathy as one direct cause of stroke-associated thrombus, because probably both the myopathy and AFib can be culprits. Still, AFib itself it may bear more responsibility for strokes in patients with fewer competing risks for stroke.

In such patients at lower vascular risk, who may have a CHA2DS2-VASc score of only 1 or 2, for example, “AFib can become a more important cause” of ischemic stroke, Dr. Turakhia said. That’s when AFib is more likely to be temporally related to stroke as the likely culprit, the mechanism addressed by Dr. Singer and associates.

“I think we’re all trying to grapple with what the truth is,” Dr. Singer observed. Still, the current study was unusual for primarily looking at the temporal relationship between AFib and stroke, rather than stroke risk. “And once again, as we found in our earlier study, but now a much larger study, it’s a tight relationship.”

Based on the current results, he said, the risk is “high when you have AFib, and it decreases very rapidly after the AFib is over.” And, “it takes multiple hours of AFib to raise stroke risk.” Inclusion in the analysis required accumulation of at least 5.5 hours of AFib on at least 1 day in a month, the cut point at which stroke risk started to climb significantly in an earlier trial.  

In the current analysis, however, the 30-day odds ratio for stroke was a nonsignificant 2.75 for an AFib burden of 6-23 hours in a day and jumped to a significant 5.0 for a burden in excess of 23 hours in a day. “That’s a lot of AFib” before the risk actually goes up, and supports AFib as causative, Dr. Singer said. If it were the myopathy itself triggering stroke in these particular patients, the risk would be ongoing and not subject to a threshold of AFib burden.
 

Implications for noncontinuous OAC

“The hope is that there are people who have very little AFib: They may have several hours, and then they have nothing for 6 months. Do they have to be anticoagulated or not?” Dr. Singer asked.

“If you believe the risk-marker story, you might say they have to be anticoagulated. But if you believe our results, you would certainly think there’s a good chance they don’t have to be anticoagulated,” he said.

“So it is logical to think, if you have the right people and continuous monitoring, that you could have time-delimited anticoagulation.” That is, patients might start right away on a direct OAC once reaching the AFib threshold in a day, Dr. Singer said, “going on and off anticoagulants in parallel with their episodes of AFib.”

The strategy wouldn’t be feasible in patients who often experience AFib, Dr. Singer noted, “but it might work for people who have infrequent paroxysmal AFib.” It certainly would first have to be tested in prospective trials, he said. Such trials would be more practical than ever to carry out given the growing availability of continuous AFib monitoring by wearables.

“We need a trial to make the case whether it’s safe or not,” Dr. Turakhia said of such a rhythm-guided approach to OAC for AFib. The population to start with, he said, would be patients with paroxysmal AFib and low CHA2DS2-VASc scores. “If you think CHA2DS2-VASc as an integrated score of vascular risk, such patients would have a lot fewer reasons to have strokes. And if they do have a stroke, it’s more reasonable to assume that it’s likely caused by atrial fib and not just a marker.”

Importantly, such a strategy could well be safer than continuous OAC for some patients – those at the lowest vascular risk and with the most occasional AFib and lowest AFib burden “who are otherwise doing fine,” Dr. Turakhia said. In such patients on continuous OAC, he proposed, the risks of bleeding and intracranial hemorrhage could potentially exceed the expected degree of protection from ischemic events.
 

Discordant periods of AFib burden

Dr. Singer and his colleagues linked a national electronic health record database with Medtronic CareLink records covering 10 years to identify 891 patients who experienced an ischemic stroke preceded by at least 120 days of continuous heart-rhythm monitoring.

The patients were then categorized by their pattern of AFib, if any, within each of two prestroke periods: the most recent 30 days, which was the test period, and the preceding 91-120 days, the control period.

The analysis then excluded any patients who reached an AFib-burden threshold of at least 5.5 hours on any day during both the test and control periods, and those who did not attain that threshold in either period.

“The ones who had AFib in both periods mostly had permanent AFib, and ones that didn’t have AFib in either period mostly were in sinus rhythm,” Dr. Singer said. It was “close to 100%” in both cases.

Those exclusions left 66 patients, 7.4% of the total, who reached the AFib-burden threshold on at least 1 day during either the test or control periods, but not both. They included 52 and 14 patients, respectively, with “discordant” periods, that is, at least that burden of AFib in a day during either the test or control period, but not both.

Comparing AFib burden at test versus control periods among patients for whom the two periods were discordant yielded an OR for stroke of 3.71 (95% confidence interval, 2.06-6.70).

Stroke risk levels were not evenly spread throughout the 24-hour periods that met the AFib-burden threshold or the 30 days preceding the patients’ strokes. The OR for stroke was 5.00 (95% CI, 2.62-9.55) during days 1-5 following the day in which the AFib-burden threshold was met. And it was 5.00 (95% CI, 2.08-12.01) over 30 days if the AFib burden exceeded 23 hours on any day of the test period.

The study’s case-crossover design, in which each patient served as their own control, is one of its advantages, Dr. Singer observed. Most patient features, including CHA2DS2-VASc score and comorbidities, did not change appreciably from earliest to the latest 30-day period, which strengthens the comparison of the two because “you don’t have to worry about long-term confounding.”

Dr. Singer was supported by the Eliot B. and Edith C. Shoolman fund of the Massachusetts General Hospital. He discloses receiving grants from Boehringer Ingelheim and Bristol-Myers Squibb; personal fees from Boehringer Ingelheim, Bristol-Myers Squibb, Fitbit, Johnson & Johnson, Merck, and Pfizer; and royalties from UpToDate.

Dr. Turakhia discloses personal fees from Medtronic, Abbott, Sanofi, Pfizer, Myokardia, Johnson & Johnson, Milestone Pharmaceuticals, InCarda Therapeutics, 100Plus, Forward Pharma, and AliveCor; and grants from Bristol-Myers Squibb, the American Heart Association, Apple, and Bayer.

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

Discovery of substantial atrial fibrillation (AFib) is usually an indication to start oral anticoagulation (OAC) for stroke prevention, but it’s far from settled whether such AFib is actually a direct cause of thromboembolic stroke. And that has implications for whether patients with occasional bouts of the arrhythmia need to be on continuous OAC.  

It’s possible that some with infrequent paroxysmal AFib can get away with OAC maintained only about as long as the arrhythmia persists, and then go off the drugs, say researchers based on their study, which, they caution, would need the support of prospective trials before such a strategy could be considered.

But importantly, in their patients who had been continuously monitored by their cardiac implantable electronic devices (CIEDs) prior to experiencing a stroke, the 30-day risk of that stroke more than tripled if their AFib burden on 1 day reached at least 5-6 hours. The risk jumped especially high within the first few days after accumulating that amount of AFib in a day, but then fell off sharply over the next few days.

Based on the study, “Your risk of stroke goes up acutely when you have an episode of AFib, and it decreases rapidly, back to baseline – certainly by 30 days and it looked like in our data by 5 days,” Daniel E. Singer, MD, of Massachusetts General Hospital, Boston, said in an interview.

Increasingly, he noted, “there’s a widespread belief that AFib is a risk marker, not a causal risk factor.” In that scenario, most embolic strokes are caused by thrombi formed as a result of an atrial myopathy, characterized by fibrosis and inflammation, that also happens to trigger AFib.

But the current findings are, “from a mechanistic point of view, very much in favor of AFib being a causal risk factor, acutely raising the risk of stroke,” said Dr. Singer, who is lead author on the analysis published online Sept. 29 in JAMA Cardiology.

Some studies have “shown that anticoagulants seem to lower stroke risk even in patients without atrial fib, and even from sources not likely to be coming from the atrium,” Mintu P. Turakhia, MD, of Stanford (Calif.) University, Palo Alto, said in an interview. Collectively they point to “atrial fibrillation as a cause of and a noncausal marker for stroke.”

For example, Dr. Turakhia pointed out in an editorial accompanying the current report that stroke in patients with CIEDs “may occur during prolonged periods of sinus rhythm.”

The current study, he said in an interview, doesn’t preclude atrial myopathy as one direct cause of stroke-associated thrombus, because probably both the myopathy and AFib can be culprits. Still, AFib itself it may bear more responsibility for strokes in patients with fewer competing risks for stroke.

In such patients at lower vascular risk, who may have a CHA2DS2-VASc score of only 1 or 2, for example, “AFib can become a more important cause” of ischemic stroke, Dr. Turakhia said. That’s when AFib is more likely to be temporally related to stroke as the likely culprit, the mechanism addressed by Dr. Singer and associates.

“I think we’re all trying to grapple with what the truth is,” Dr. Singer observed. Still, the current study was unusual for primarily looking at the temporal relationship between AFib and stroke, rather than stroke risk. “And once again, as we found in our earlier study, but now a much larger study, it’s a tight relationship.”

Based on the current results, he said, the risk is “high when you have AFib, and it decreases very rapidly after the AFib is over.” And, “it takes multiple hours of AFib to raise stroke risk.” Inclusion in the analysis required accumulation of at least 5.5 hours of AFib on at least 1 day in a month, the cut point at which stroke risk started to climb significantly in an earlier trial.  

In the current analysis, however, the 30-day odds ratio for stroke was a nonsignificant 2.75 for an AFib burden of 6-23 hours in a day and jumped to a significant 5.0 for a burden in excess of 23 hours in a day. “That’s a lot of AFib” before the risk actually goes up, and supports AFib as causative, Dr. Singer said. If it were the myopathy itself triggering stroke in these particular patients, the risk would be ongoing and not subject to a threshold of AFib burden.
 

Implications for noncontinuous OAC

“The hope is that there are people who have very little AFib: They may have several hours, and then they have nothing for 6 months. Do they have to be anticoagulated or not?” Dr. Singer asked.

“If you believe the risk-marker story, you might say they have to be anticoagulated. But if you believe our results, you would certainly think there’s a good chance they don’t have to be anticoagulated,” he said.

“So it is logical to think, if you have the right people and continuous monitoring, that you could have time-delimited anticoagulation.” That is, patients might start right away on a direct OAC once reaching the AFib threshold in a day, Dr. Singer said, “going on and off anticoagulants in parallel with their episodes of AFib.”

The strategy wouldn’t be feasible in patients who often experience AFib, Dr. Singer noted, “but it might work for people who have infrequent paroxysmal AFib.” It certainly would first have to be tested in prospective trials, he said. Such trials would be more practical than ever to carry out given the growing availability of continuous AFib monitoring by wearables.

“We need a trial to make the case whether it’s safe or not,” Dr. Turakhia said of such a rhythm-guided approach to OAC for AFib. The population to start with, he said, would be patients with paroxysmal AFib and low CHA2DS2-VASc scores. “If you think CHA2DS2-VASc as an integrated score of vascular risk, such patients would have a lot fewer reasons to have strokes. And if they do have a stroke, it’s more reasonable to assume that it’s likely caused by atrial fib and not just a marker.”

Importantly, such a strategy could well be safer than continuous OAC for some patients – those at the lowest vascular risk and with the most occasional AFib and lowest AFib burden “who are otherwise doing fine,” Dr. Turakhia said. In such patients on continuous OAC, he proposed, the risks of bleeding and intracranial hemorrhage could potentially exceed the expected degree of protection from ischemic events.
 

Discordant periods of AFib burden

Dr. Singer and his colleagues linked a national electronic health record database with Medtronic CareLink records covering 10 years to identify 891 patients who experienced an ischemic stroke preceded by at least 120 days of continuous heart-rhythm monitoring.

The patients were then categorized by their pattern of AFib, if any, within each of two prestroke periods: the most recent 30 days, which was the test period, and the preceding 91-120 days, the control period.

The analysis then excluded any patients who reached an AFib-burden threshold of at least 5.5 hours on any day during both the test and control periods, and those who did not attain that threshold in either period.

“The ones who had AFib in both periods mostly had permanent AFib, and ones that didn’t have AFib in either period mostly were in sinus rhythm,” Dr. Singer said. It was “close to 100%” in both cases.

Those exclusions left 66 patients, 7.4% of the total, who reached the AFib-burden threshold on at least 1 day during either the test or control periods, but not both. They included 52 and 14 patients, respectively, with “discordant” periods, that is, at least that burden of AFib in a day during either the test or control period, but not both.

Comparing AFib burden at test versus control periods among patients for whom the two periods were discordant yielded an OR for stroke of 3.71 (95% confidence interval, 2.06-6.70).

Stroke risk levels were not evenly spread throughout the 24-hour periods that met the AFib-burden threshold or the 30 days preceding the patients’ strokes. The OR for stroke was 5.00 (95% CI, 2.62-9.55) during days 1-5 following the day in which the AFib-burden threshold was met. And it was 5.00 (95% CI, 2.08-12.01) over 30 days if the AFib burden exceeded 23 hours on any day of the test period.

The study’s case-crossover design, in which each patient served as their own control, is one of its advantages, Dr. Singer observed. Most patient features, including CHA2DS2-VASc score and comorbidities, did not change appreciably from earliest to the latest 30-day period, which strengthens the comparison of the two because “you don’t have to worry about long-term confounding.”

Dr. Singer was supported by the Eliot B. and Edith C. Shoolman fund of the Massachusetts General Hospital. He discloses receiving grants from Boehringer Ingelheim and Bristol-Myers Squibb; personal fees from Boehringer Ingelheim, Bristol-Myers Squibb, Fitbit, Johnson & Johnson, Merck, and Pfizer; and royalties from UpToDate.

Dr. Turakhia discloses personal fees from Medtronic, Abbott, Sanofi, Pfizer, Myokardia, Johnson & Johnson, Milestone Pharmaceuticals, InCarda Therapeutics, 100Plus, Forward Pharma, and AliveCor; and grants from Bristol-Myers Squibb, the American Heart Association, Apple, and Bayer.

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

Discovery of substantial atrial fibrillation (AFib) is usually an indication to start oral anticoagulation (OAC) for stroke prevention, but it’s far from settled whether such AFib is actually a direct cause of thromboembolic stroke. And that has implications for whether patients with occasional bouts of the arrhythmia need to be on continuous OAC.  

It’s possible that some with infrequent paroxysmal AFib can get away with OAC maintained only about as long as the arrhythmia persists, and then go off the drugs, say researchers based on their study, which, they caution, would need the support of prospective trials before such a strategy could be considered.

But importantly, in their patients who had been continuously monitored by their cardiac implantable electronic devices (CIEDs) prior to experiencing a stroke, the 30-day risk of that stroke more than tripled if their AFib burden on 1 day reached at least 5-6 hours. The risk jumped especially high within the first few days after accumulating that amount of AFib in a day, but then fell off sharply over the next few days.

Based on the study, “Your risk of stroke goes up acutely when you have an episode of AFib, and it decreases rapidly, back to baseline – certainly by 30 days and it looked like in our data by 5 days,” Daniel E. Singer, MD, of Massachusetts General Hospital, Boston, said in an interview.

Increasingly, he noted, “there’s a widespread belief that AFib is a risk marker, not a causal risk factor.” In that scenario, most embolic strokes are caused by thrombi formed as a result of an atrial myopathy, characterized by fibrosis and inflammation, that also happens to trigger AFib.

But the current findings are, “from a mechanistic point of view, very much in favor of AFib being a causal risk factor, acutely raising the risk of stroke,” said Dr. Singer, who is lead author on the analysis published online Sept. 29 in JAMA Cardiology.

Some studies have “shown that anticoagulants seem to lower stroke risk even in patients without atrial fib, and even from sources not likely to be coming from the atrium,” Mintu P. Turakhia, MD, of Stanford (Calif.) University, Palo Alto, said in an interview. Collectively they point to “atrial fibrillation as a cause of and a noncausal marker for stroke.”

For example, Dr. Turakhia pointed out in an editorial accompanying the current report that stroke in patients with CIEDs “may occur during prolonged periods of sinus rhythm.”

The current study, he said in an interview, doesn’t preclude atrial myopathy as one direct cause of stroke-associated thrombus, because probably both the myopathy and AFib can be culprits. Still, AFib itself it may bear more responsibility for strokes in patients with fewer competing risks for stroke.

In such patients at lower vascular risk, who may have a CHA2DS2-VASc score of only 1 or 2, for example, “AFib can become a more important cause” of ischemic stroke, Dr. Turakhia said. That’s when AFib is more likely to be temporally related to stroke as the likely culprit, the mechanism addressed by Dr. Singer and associates.

“I think we’re all trying to grapple with what the truth is,” Dr. Singer observed. Still, the current study was unusual for primarily looking at the temporal relationship between AFib and stroke, rather than stroke risk. “And once again, as we found in our earlier study, but now a much larger study, it’s a tight relationship.”

Based on the current results, he said, the risk is “high when you have AFib, and it decreases very rapidly after the AFib is over.” And, “it takes multiple hours of AFib to raise stroke risk.” Inclusion in the analysis required accumulation of at least 5.5 hours of AFib on at least 1 day in a month, the cut point at which stroke risk started to climb significantly in an earlier trial.  

In the current analysis, however, the 30-day odds ratio for stroke was a nonsignificant 2.75 for an AFib burden of 6-23 hours in a day and jumped to a significant 5.0 for a burden in excess of 23 hours in a day. “That’s a lot of AFib” before the risk actually goes up, and supports AFib as causative, Dr. Singer said. If it were the myopathy itself triggering stroke in these particular patients, the risk would be ongoing and not subject to a threshold of AFib burden.
 

Implications for noncontinuous OAC

“The hope is that there are people who have very little AFib: They may have several hours, and then they have nothing for 6 months. Do they have to be anticoagulated or not?” Dr. Singer asked.

“If you believe the risk-marker story, you might say they have to be anticoagulated. But if you believe our results, you would certainly think there’s a good chance they don’t have to be anticoagulated,” he said.

“So it is logical to think, if you have the right people and continuous monitoring, that you could have time-delimited anticoagulation.” That is, patients might start right away on a direct OAC once reaching the AFib threshold in a day, Dr. Singer said, “going on and off anticoagulants in parallel with their episodes of AFib.”

The strategy wouldn’t be feasible in patients who often experience AFib, Dr. Singer noted, “but it might work for people who have infrequent paroxysmal AFib.” It certainly would first have to be tested in prospective trials, he said. Such trials would be more practical than ever to carry out given the growing availability of continuous AFib monitoring by wearables.

“We need a trial to make the case whether it’s safe or not,” Dr. Turakhia said of such a rhythm-guided approach to OAC for AFib. The population to start with, he said, would be patients with paroxysmal AFib and low CHA2DS2-VASc scores. “If you think CHA2DS2-VASc as an integrated score of vascular risk, such patients would have a lot fewer reasons to have strokes. And if they do have a stroke, it’s more reasonable to assume that it’s likely caused by atrial fib and not just a marker.”

Importantly, such a strategy could well be safer than continuous OAC for some patients – those at the lowest vascular risk and with the most occasional AFib and lowest AFib burden “who are otherwise doing fine,” Dr. Turakhia said. In such patients on continuous OAC, he proposed, the risks of bleeding and intracranial hemorrhage could potentially exceed the expected degree of protection from ischemic events.
 

Discordant periods of AFib burden

Dr. Singer and his colleagues linked a national electronic health record database with Medtronic CareLink records covering 10 years to identify 891 patients who experienced an ischemic stroke preceded by at least 120 days of continuous heart-rhythm monitoring.

The patients were then categorized by their pattern of AFib, if any, within each of two prestroke periods: the most recent 30 days, which was the test period, and the preceding 91-120 days, the control period.

The analysis then excluded any patients who reached an AFib-burden threshold of at least 5.5 hours on any day during both the test and control periods, and those who did not attain that threshold in either period.

“The ones who had AFib in both periods mostly had permanent AFib, and ones that didn’t have AFib in either period mostly were in sinus rhythm,” Dr. Singer said. It was “close to 100%” in both cases.

Those exclusions left 66 patients, 7.4% of the total, who reached the AFib-burden threshold on at least 1 day during either the test or control periods, but not both. They included 52 and 14 patients, respectively, with “discordant” periods, that is, at least that burden of AFib in a day during either the test or control period, but not both.

Comparing AFib burden at test versus control periods among patients for whom the two periods were discordant yielded an OR for stroke of 3.71 (95% confidence interval, 2.06-6.70).

Stroke risk levels were not evenly spread throughout the 24-hour periods that met the AFib-burden threshold or the 30 days preceding the patients’ strokes. The OR for stroke was 5.00 (95% CI, 2.62-9.55) during days 1-5 following the day in which the AFib-burden threshold was met. And it was 5.00 (95% CI, 2.08-12.01) over 30 days if the AFib burden exceeded 23 hours on any day of the test period.

The study’s case-crossover design, in which each patient served as their own control, is one of its advantages, Dr. Singer observed. Most patient features, including CHA2DS2-VASc score and comorbidities, did not change appreciably from earliest to the latest 30-day period, which strengthens the comparison of the two because “you don’t have to worry about long-term confounding.”

Dr. Singer was supported by the Eliot B. and Edith C. Shoolman fund of the Massachusetts General Hospital. He discloses receiving grants from Boehringer Ingelheim and Bristol-Myers Squibb; personal fees from Boehringer Ingelheim, Bristol-Myers Squibb, Fitbit, Johnson & Johnson, Merck, and Pfizer; and royalties from UpToDate.

Dr. Turakhia discloses personal fees from Medtronic, Abbott, Sanofi, Pfizer, Myokardia, Johnson & Johnson, Milestone Pharmaceuticals, InCarda Therapeutics, 100Plus, Forward Pharma, and AliveCor; and grants from Bristol-Myers Squibb, the American Heart Association, Apple, and Bayer.

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

Traumatic experiences, especially sexual assault, may put women at greater risk for poor brain health.

In the Ms Brain study, middle-aged women with trauma exposure had a greater volume of white matter hyperintensities (WMHs) than those without trauma. In addition, the differences persisted even after adjusting for depressive or post-traumatic stress symptoms. 

WMHs are “an important indicator of small vessel disease in the brain and have been linked to future stroke risk, dementia risk, and mortality,” lead investigator Rebecca Thurston, PhD, from the University of Pittsburgh, told this news organization.

“What I take from this is, really, that sexual assault has implications for women’s health, far beyond exclusively mental health outcomes, but also for their cardiovascular health, as we have shown in other work and for their stroke and dementia risk as we are seeing in the present work,” Dr. Thurston added.

The study was presented at the North American Menopause Society (NAMS) Annual Meeting in Washington, D.C., and has been accepted for publication in the journal Brain Imaging and Behavior.
 

Beyond the usual suspects

As part of the study, 145 women (mean age, 59 years) free of clinical cardiovascular disease, stroke, or dementia provided their medical history, including history of traumatic experiences, depression, and post-traumatic stress disorder and underwent magnetic resonance brain imaging for WMHs.

More than two-thirds (68%) of the women reported at least one trauma, most commonly sexual assault (23%).

In multivariate analysis, women with trauma exposure had greater WMH volume than women without trauma (P = .01), with sexual assault most strongly associated with greater WMH volume (P = .02).

The associations persisted after adjusting for depressive or post-traumatic stress symptoms.

“A history of sexual assault was particularly related to white matter hyperintensities in the parietal lobe, and these kinds of white matter hyperintensities have been linked to Alzheimer’s disease in a fairly pronounced way,” Dr. Thurston said.

“When we think about risk factors for stroke, dementia, we need to think beyond exclusively our usual suspects and also think about women [who experienced] psychological trauma and experienced sexual assault in particular. So ask about it and consider it part of your screening regimen,” she added.
 

‘Burgeoning’ literature

Commenting on the findings, Charles Nemeroff, MD, PhD, professor and chair, department of psychiatry and behavioral sciences, Dell Medical School, University of Texas at Austin, and director of its Institute for Early Life Adversity Research, said the research adds to the “burgeoning literature on the long term neurobiological consequences of trauma and more specifically, sexual abuse, on brain imaging measures.”

“Our group and others reported several years ago that patients with mood disorders, more specifically bipolar disorder and major depression, had higher rates of WMH than matched controls. Those older studies did not control for a history of early life adversity such as childhood maltreatment,” Dr. Nemeroff said.

“In addition to this finding of increased WMH in subjects exposed to trauma is a very large literature documenting other central nervous system (CNS) changes in this population, including cortical thinning in certain brain areas and clearly an emerging finding that different forms of childhood maltreatment are associated with quite distinct structural brain alterations in adulthood,” he noted. 

The study was supported by grants from the National Institutes of Health. Dr. Thurston and Dr. Nemeroff have disclosed no relevant financial relationships.

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

Traumatic experiences, especially sexual assault, may put women at greater risk for poor brain health.

In the Ms Brain study, middle-aged women with trauma exposure had a greater volume of white matter hyperintensities (WMHs) than those without trauma. In addition, the differences persisted even after adjusting for depressive or post-traumatic stress symptoms. 

WMHs are “an important indicator of small vessel disease in the brain and have been linked to future stroke risk, dementia risk, and mortality,” lead investigator Rebecca Thurston, PhD, from the University of Pittsburgh, told this news organization.

“What I take from this is, really, that sexual assault has implications for women’s health, far beyond exclusively mental health outcomes, but also for their cardiovascular health, as we have shown in other work and for their stroke and dementia risk as we are seeing in the present work,” Dr. Thurston added.

The study was presented at the North American Menopause Society (NAMS) Annual Meeting in Washington, D.C., and has been accepted for publication in the journal Brain Imaging and Behavior.
 

Beyond the usual suspects

As part of the study, 145 women (mean age, 59 years) free of clinical cardiovascular disease, stroke, or dementia provided their medical history, including history of traumatic experiences, depression, and post-traumatic stress disorder and underwent magnetic resonance brain imaging for WMHs.

More than two-thirds (68%) of the women reported at least one trauma, most commonly sexual assault (23%).

In multivariate analysis, women with trauma exposure had greater WMH volume than women without trauma (P = .01), with sexual assault most strongly associated with greater WMH volume (P = .02).

The associations persisted after adjusting for depressive or post-traumatic stress symptoms.

“A history of sexual assault was particularly related to white matter hyperintensities in the parietal lobe, and these kinds of white matter hyperintensities have been linked to Alzheimer’s disease in a fairly pronounced way,” Dr. Thurston said.

“When we think about risk factors for stroke, dementia, we need to think beyond exclusively our usual suspects and also think about women [who experienced] psychological trauma and experienced sexual assault in particular. So ask about it and consider it part of your screening regimen,” she added.
 

‘Burgeoning’ literature

Commenting on the findings, Charles Nemeroff, MD, PhD, professor and chair, department of psychiatry and behavioral sciences, Dell Medical School, University of Texas at Austin, and director of its Institute for Early Life Adversity Research, said the research adds to the “burgeoning literature on the long term neurobiological consequences of trauma and more specifically, sexual abuse, on brain imaging measures.”

“Our group and others reported several years ago that patients with mood disorders, more specifically bipolar disorder and major depression, had higher rates of WMH than matched controls. Those older studies did not control for a history of early life adversity such as childhood maltreatment,” Dr. Nemeroff said.

“In addition to this finding of increased WMH in subjects exposed to trauma is a very large literature documenting other central nervous system (CNS) changes in this population, including cortical thinning in certain brain areas and clearly an emerging finding that different forms of childhood maltreatment are associated with quite distinct structural brain alterations in adulthood,” he noted. 

The study was supported by grants from the National Institutes of Health. Dr. Thurston and Dr. Nemeroff have disclosed no relevant financial relationships.

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

Traumatic experiences, especially sexual assault, may put women at greater risk for poor brain health.

In the Ms Brain study, middle-aged women with trauma exposure had a greater volume of white matter hyperintensities (WMHs) than those without trauma. In addition, the differences persisted even after adjusting for depressive or post-traumatic stress symptoms. 

WMHs are “an important indicator of small vessel disease in the brain and have been linked to future stroke risk, dementia risk, and mortality,” lead investigator Rebecca Thurston, PhD, from the University of Pittsburgh, told this news organization.

“What I take from this is, really, that sexual assault has implications for women’s health, far beyond exclusively mental health outcomes, but also for their cardiovascular health, as we have shown in other work and for their stroke and dementia risk as we are seeing in the present work,” Dr. Thurston added.

The study was presented at the North American Menopause Society (NAMS) Annual Meeting in Washington, D.C., and has been accepted for publication in the journal Brain Imaging and Behavior.
 

Beyond the usual suspects

As part of the study, 145 women (mean age, 59 years) free of clinical cardiovascular disease, stroke, or dementia provided their medical history, including history of traumatic experiences, depression, and post-traumatic stress disorder and underwent magnetic resonance brain imaging for WMHs.

More than two-thirds (68%) of the women reported at least one trauma, most commonly sexual assault (23%).

In multivariate analysis, women with trauma exposure had greater WMH volume than women without trauma (P = .01), with sexual assault most strongly associated with greater WMH volume (P = .02).

The associations persisted after adjusting for depressive or post-traumatic stress symptoms.

“A history of sexual assault was particularly related to white matter hyperintensities in the parietal lobe, and these kinds of white matter hyperintensities have been linked to Alzheimer’s disease in a fairly pronounced way,” Dr. Thurston said.

“When we think about risk factors for stroke, dementia, we need to think beyond exclusively our usual suspects and also think about women [who experienced] psychological trauma and experienced sexual assault in particular. So ask about it and consider it part of your screening regimen,” she added.
 

‘Burgeoning’ literature

Commenting on the findings, Charles Nemeroff, MD, PhD, professor and chair, department of psychiatry and behavioral sciences, Dell Medical School, University of Texas at Austin, and director of its Institute for Early Life Adversity Research, said the research adds to the “burgeoning literature on the long term neurobiological consequences of trauma and more specifically, sexual abuse, on brain imaging measures.”

“Our group and others reported several years ago that patients with mood disorders, more specifically bipolar disorder and major depression, had higher rates of WMH than matched controls. Those older studies did not control for a history of early life adversity such as childhood maltreatment,” Dr. Nemeroff said.

“In addition to this finding of increased WMH in subjects exposed to trauma is a very large literature documenting other central nervous system (CNS) changes in this population, including cortical thinning in certain brain areas and clearly an emerging finding that different forms of childhood maltreatment are associated with quite distinct structural brain alterations in adulthood,” he noted. 

The study was supported by grants from the National Institutes of Health. Dr. Thurston and Dr. Nemeroff have disclosed no relevant financial relationships.

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

Treatment with acetylsalicylic acid (ASA) or heparin is associated with an increased risk for symptomatic intracranial hemorrhage (sICH) in patients with ischemic stroke who are undergoing endovascular therapy (EVT), new data show.

In this population, ASA and heparin are each associated with an approximately doubled risk for sICH when administered during EVT.

“We did not find any evidence for a beneficial effect on functional outcome,” investigator Wouter van der Steen, MD, research physician and PhD student at Erasmus University Medical Center, Rotterdam, the Netherlands, told this news organization. The possibility that a positive effect would be observed if the trial were continued was considered negligible, he added.

The researchers stopped the trial for safety reasons and recommend avoiding the evaluated dosages of both medications during EVT for ischemic stroke, said Dr. van der Steen.

He presented the findings from the MR CLEAN-MED trial at the European Stroke Organisation Conference (ESOC) 2021, which was held online.
 

Trial stopped for safety

Previous research has supported the safety and efficacy of EVT for ischemic stroke. Still, more than 30% of patients do not recover, despite fast and complete recanalization. Incomplete microvascular reperfusion (IMR) could explain this incomplete recovery, the researchers note.

Microthrombi, which occlude distal vessels, and neutrophil extracellular traps can cause IMR. This problem can be reduced through treatment with ASA, which has an antithrombotic effect, or with heparin, which dissolves neutrophil extracellular traps, they add. Although these drugs are associated with good clinical outcomes, they entail an increased risk for sICH.

The investigators conducted the multicenter, randomized controlled MR CLEAN-MED trial to evaluate the effect of intravenous (IV) ASA and heparin, alone or in combination, during EVT for acute ischemic stroke. Treatment was open label, but outcome assessment was blinded. Eligible participants were adults with a National Institutes of Health Stroke Scale (NIHSS) score of greater than or equal to 2 and an anterior circulation large-vessel occlusion for whom EVT could be initiated in fewer than 6 hours.

Investigators randomly assigned patients to receive or not to receive ASA. Within each of these two treatment groups, patients were randomly assigned to receive no heparin, low-dose heparin, or moderate-dose heparin.

ASA was given in a loading dose of 300 mg. Patients who were given low-dose heparin received a loading dose of 5,000 IU followed by 500 IU/h for 6 hours. Patients who received moderate-dose heparin were given a loading dose of 5,000 IU followed by 1,250 IU/h for 6 hours.

The study’s primary outcome was Modified Rankin Scale (mRS) score at 90 days. Secondary outcomes were NIHSS score at 24 hours, NIHSS score at 5 to 7 days, and recanalization grade at 24 hours on CT angiography or MRI. The primary safety outcomes were sICH and death within 90 days.

An independent, unblinded data and safety monitoring board (DSMB) assessed the risk for the primary safety outcomes throughout the trial. The board performed interim analyses of safety and efficacy for every 300 patients.

After the fourth safety assessment, the DSMB recommended that enrollment in the moderate-dose heparin arm be discontinued for safety reasons. Enrollment in other arms continued.

After the second interim analysis, the DSMB advised that the trial steering committee be unblinded to decide whether to stop or continue the trial. The steering committee decided to stop the trial for reasons of safety.
 

Increased risk for sICH

In all, 628 patients were included in the study. The ASA groups included 310 patients, and the no-ASA groups included 318 patients. In all, 332 participants received heparin, and 296 received no heparin.

The demographic characteristics were well balanced between groups. The population’s median age was 73 years, and about 53% were men. The median baseline NIHSS score was approximately 15. About 74% of patients received IV thrombolysis. The median baseline Alberta Stroke Program Early CT Scan score was 9.

The investigators observed a slight shift toward worse outcome in the ASA group, compared with the no-ASA group (adjusted OR, 0.91). In addition, the ASA group had a significantly increased risk for sICH, compared with the no-ASA group (14% vs. 7.2%; aOR, 1.95).

Patients in the ASA group were less likely to have good functional outcome (mRS of 0 to 2; aOR, 0.76), and the mortality rate tended to be higher.

The researchers found a nonsignificant shift toward a worse functional outcome in the heparin group, compared with the no-heparin group (aOR, 0.81). The risk for sICH was significantly higher in the heparin group, compared with the no-heparin group (13% vs. 7.4%; aOR, 2.00).

Patients in the heparin group were also less likely to have a good functional outcome (aOR, 0.78), and there was a nonsignificant increase in risk for death among those patients.

The rate of sICH was 11% in the group that received low-dose heparin; it was 26% in the group that received moderate-dose heparin (aOR, 6.05). The mortality rate was 23% in the low-dose group and 47% in the moderate-dose group (aOR, 5.45).

There was no significant interaction between ASA and heparin on the primary outcome and on sICH occurrence.
 

‘A unique trial’

“MR CLEAN-MED is a unique trial because it investigated a widely used treatment but until now without any proof of effectiveness,” said Dr. van der Steen. The researchers expect that their findings will have a strong impact on the management of patients with acute ischemic stroke. They suggest that the administration of antithrombotic agents during EVT be avoided.

“We consider it probable that the increased risk of sICH explains at least a part of the nonsignificant shift towards a worse functional outcome,” co-investigator Bob Roozenbeek, MD, PhD, a neurologist at the Erasmus Medical Center, said in an interview. “However, to make more definite statements, we will have to do more in-depth analyses.”

It remains unclear whether the periprocedural use of lower dosages of antithrombotic agents or of a single bolus of heparin could be safe and effective, said Dr. van der Steen.

To gain insight into these questions, the investigators will evaluate the effect of the medications and dosages examined in this trial on primary hemostasis and coagulation activity in the trial population. They also plan to examine the effect of primary hemostasis and coagulation activity on risk for sICH and functional outcome.

Enhancing the effectiveness of thrombectomy for acute ischemic stroke continues to be an important goal for stroke therapy, said Mark Fisher, MD, professor of neurology and pathology and laboratory medicine at the University of California, Irvine, who commented on the findings for this news organization.

At least three strategies are available: The use of ancillary antithrombotic medications, neuroprotection, and modulation of the vasoconstrictive properties of the microcirculation.

“Results of MR CLEAN-MED argue against the antithrombotic strategy,” said Dr. Fisher. “The alternate strategies remain viable, and results of interventions using those approaches are awaited with great interest.”

The study was funded by the CONTRAST consortium, which is supported by the Netherlands Cardiovascular Research Initiative and the Brain Foundation Netherlands. Funding also was provided by Stryker, Medtronic, and Cerenovus. Dr. van der Steen and Dr. Fisher have disclosed no relevant financial relationships.

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

Treatment with acetylsalicylic acid (ASA) or heparin is associated with an increased risk for symptomatic intracranial hemorrhage (sICH) in patients with ischemic stroke who are undergoing endovascular therapy (EVT), new data show.

In this population, ASA and heparin are each associated with an approximately doubled risk for sICH when administered during EVT.

“We did not find any evidence for a beneficial effect on functional outcome,” investigator Wouter van der Steen, MD, research physician and PhD student at Erasmus University Medical Center, Rotterdam, the Netherlands, told this news organization. The possibility that a positive effect would be observed if the trial were continued was considered negligible, he added.

The researchers stopped the trial for safety reasons and recommend avoiding the evaluated dosages of both medications during EVT for ischemic stroke, said Dr. van der Steen.

He presented the findings from the MR CLEAN-MED trial at the European Stroke Organisation Conference (ESOC) 2021, which was held online.
 

Trial stopped for safety

Previous research has supported the safety and efficacy of EVT for ischemic stroke. Still, more than 30% of patients do not recover, despite fast and complete recanalization. Incomplete microvascular reperfusion (IMR) could explain this incomplete recovery, the researchers note.

Microthrombi, which occlude distal vessels, and neutrophil extracellular traps can cause IMR. This problem can be reduced through treatment with ASA, which has an antithrombotic effect, or with heparin, which dissolves neutrophil extracellular traps, they add. Although these drugs are associated with good clinical outcomes, they entail an increased risk for sICH.

The investigators conducted the multicenter, randomized controlled MR CLEAN-MED trial to evaluate the effect of intravenous (IV) ASA and heparin, alone or in combination, during EVT for acute ischemic stroke. Treatment was open label, but outcome assessment was blinded. Eligible participants were adults with a National Institutes of Health Stroke Scale (NIHSS) score of greater than or equal to 2 and an anterior circulation large-vessel occlusion for whom EVT could be initiated in fewer than 6 hours.

Investigators randomly assigned patients to receive or not to receive ASA. Within each of these two treatment groups, patients were randomly assigned to receive no heparin, low-dose heparin, or moderate-dose heparin.

ASA was given in a loading dose of 300 mg. Patients who were given low-dose heparin received a loading dose of 5,000 IU followed by 500 IU/h for 6 hours. Patients who received moderate-dose heparin were given a loading dose of 5,000 IU followed by 1,250 IU/h for 6 hours.

The study’s primary outcome was Modified Rankin Scale (mRS) score at 90 days. Secondary outcomes were NIHSS score at 24 hours, NIHSS score at 5 to 7 days, and recanalization grade at 24 hours on CT angiography or MRI. The primary safety outcomes were sICH and death within 90 days.

An independent, unblinded data and safety monitoring board (DSMB) assessed the risk for the primary safety outcomes throughout the trial. The board performed interim analyses of safety and efficacy for every 300 patients.

After the fourth safety assessment, the DSMB recommended that enrollment in the moderate-dose heparin arm be discontinued for safety reasons. Enrollment in other arms continued.

After the second interim analysis, the DSMB advised that the trial steering committee be unblinded to decide whether to stop or continue the trial. The steering committee decided to stop the trial for reasons of safety.
 

Increased risk for sICH

In all, 628 patients were included in the study. The ASA groups included 310 patients, and the no-ASA groups included 318 patients. In all, 332 participants received heparin, and 296 received no heparin.

The demographic characteristics were well balanced between groups. The population’s median age was 73 years, and about 53% were men. The median baseline NIHSS score was approximately 15. About 74% of patients received IV thrombolysis. The median baseline Alberta Stroke Program Early CT Scan score was 9.

The investigators observed a slight shift toward worse outcome in the ASA group, compared with the no-ASA group (adjusted OR, 0.91). In addition, the ASA group had a significantly increased risk for sICH, compared with the no-ASA group (14% vs. 7.2%; aOR, 1.95).

Patients in the ASA group were less likely to have good functional outcome (mRS of 0 to 2; aOR, 0.76), and the mortality rate tended to be higher.

The researchers found a nonsignificant shift toward a worse functional outcome in the heparin group, compared with the no-heparin group (aOR, 0.81). The risk for sICH was significantly higher in the heparin group, compared with the no-heparin group (13% vs. 7.4%; aOR, 2.00).

Patients in the heparin group were also less likely to have a good functional outcome (aOR, 0.78), and there was a nonsignificant increase in risk for death among those patients.

The rate of sICH was 11% in the group that received low-dose heparin; it was 26% in the group that received moderate-dose heparin (aOR, 6.05). The mortality rate was 23% in the low-dose group and 47% in the moderate-dose group (aOR, 5.45).

There was no significant interaction between ASA and heparin on the primary outcome and on sICH occurrence.
 

‘A unique trial’

“MR CLEAN-MED is a unique trial because it investigated a widely used treatment but until now without any proof of effectiveness,” said Dr. van der Steen. The researchers expect that their findings will have a strong impact on the management of patients with acute ischemic stroke. They suggest that the administration of antithrombotic agents during EVT be avoided.

“We consider it probable that the increased risk of sICH explains at least a part of the nonsignificant shift towards a worse functional outcome,” co-investigator Bob Roozenbeek, MD, PhD, a neurologist at the Erasmus Medical Center, said in an interview. “However, to make more definite statements, we will have to do more in-depth analyses.”

It remains unclear whether the periprocedural use of lower dosages of antithrombotic agents or of a single bolus of heparin could be safe and effective, said Dr. van der Steen.

To gain insight into these questions, the investigators will evaluate the effect of the medications and dosages examined in this trial on primary hemostasis and coagulation activity in the trial population. They also plan to examine the effect of primary hemostasis and coagulation activity on risk for sICH and functional outcome.

Enhancing the effectiveness of thrombectomy for acute ischemic stroke continues to be an important goal for stroke therapy, said Mark Fisher, MD, professor of neurology and pathology and laboratory medicine at the University of California, Irvine, who commented on the findings for this news organization.

At least three strategies are available: The use of ancillary antithrombotic medications, neuroprotection, and modulation of the vasoconstrictive properties of the microcirculation.

“Results of MR CLEAN-MED argue against the antithrombotic strategy,” said Dr. Fisher. “The alternate strategies remain viable, and results of interventions using those approaches are awaited with great interest.”

The study was funded by the CONTRAST consortium, which is supported by the Netherlands Cardiovascular Research Initiative and the Brain Foundation Netherlands. Funding also was provided by Stryker, Medtronic, and Cerenovus. Dr. van der Steen and Dr. Fisher have disclosed no relevant financial relationships.

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

Treatment with acetylsalicylic acid (ASA) or heparin is associated with an increased risk for symptomatic intracranial hemorrhage (sICH) in patients with ischemic stroke who are undergoing endovascular therapy (EVT), new data show.

In this population, ASA and heparin are each associated with an approximately doubled risk for sICH when administered during EVT.

“We did not find any evidence for a beneficial effect on functional outcome,” investigator Wouter van der Steen, MD, research physician and PhD student at Erasmus University Medical Center, Rotterdam, the Netherlands, told this news organization. The possibility that a positive effect would be observed if the trial were continued was considered negligible, he added.

The researchers stopped the trial for safety reasons and recommend avoiding the evaluated dosages of both medications during EVT for ischemic stroke, said Dr. van der Steen.

He presented the findings from the MR CLEAN-MED trial at the European Stroke Organisation Conference (ESOC) 2021, which was held online.
 

Trial stopped for safety

Previous research has supported the safety and efficacy of EVT for ischemic stroke. Still, more than 30% of patients do not recover, despite fast and complete recanalization. Incomplete microvascular reperfusion (IMR) could explain this incomplete recovery, the researchers note.

Microthrombi, which occlude distal vessels, and neutrophil extracellular traps can cause IMR. This problem can be reduced through treatment with ASA, which has an antithrombotic effect, or with heparin, which dissolves neutrophil extracellular traps, they add. Although these drugs are associated with good clinical outcomes, they entail an increased risk for sICH.

The investigators conducted the multicenter, randomized controlled MR CLEAN-MED trial to evaluate the effect of intravenous (IV) ASA and heparin, alone or in combination, during EVT for acute ischemic stroke. Treatment was open label, but outcome assessment was blinded. Eligible participants were adults with a National Institutes of Health Stroke Scale (NIHSS) score of greater than or equal to 2 and an anterior circulation large-vessel occlusion for whom EVT could be initiated in fewer than 6 hours.

Investigators randomly assigned patients to receive or not to receive ASA. Within each of these two treatment groups, patients were randomly assigned to receive no heparin, low-dose heparin, or moderate-dose heparin.

ASA was given in a loading dose of 300 mg. Patients who were given low-dose heparin received a loading dose of 5,000 IU followed by 500 IU/h for 6 hours. Patients who received moderate-dose heparin were given a loading dose of 5,000 IU followed by 1,250 IU/h for 6 hours.

The study’s primary outcome was Modified Rankin Scale (mRS) score at 90 days. Secondary outcomes were NIHSS score at 24 hours, NIHSS score at 5 to 7 days, and recanalization grade at 24 hours on CT angiography or MRI. The primary safety outcomes were sICH and death within 90 days.

An independent, unblinded data and safety monitoring board (DSMB) assessed the risk for the primary safety outcomes throughout the trial. The board performed interim analyses of safety and efficacy for every 300 patients.

After the fourth safety assessment, the DSMB recommended that enrollment in the moderate-dose heparin arm be discontinued for safety reasons. Enrollment in other arms continued.

After the second interim analysis, the DSMB advised that the trial steering committee be unblinded to decide whether to stop or continue the trial. The steering committee decided to stop the trial for reasons of safety.
 

Increased risk for sICH

In all, 628 patients were included in the study. The ASA groups included 310 patients, and the no-ASA groups included 318 patients. In all, 332 participants received heparin, and 296 received no heparin.

The demographic characteristics were well balanced between groups. The population’s median age was 73 years, and about 53% were men. The median baseline NIHSS score was approximately 15. About 74% of patients received IV thrombolysis. The median baseline Alberta Stroke Program Early CT Scan score was 9.

The investigators observed a slight shift toward worse outcome in the ASA group, compared with the no-ASA group (adjusted OR, 0.91). In addition, the ASA group had a significantly increased risk for sICH, compared with the no-ASA group (14% vs. 7.2%; aOR, 1.95).

Patients in the ASA group were less likely to have good functional outcome (mRS of 0 to 2; aOR, 0.76), and the mortality rate tended to be higher.

The researchers found a nonsignificant shift toward a worse functional outcome in the heparin group, compared with the no-heparin group (aOR, 0.81). The risk for sICH was significantly higher in the heparin group, compared with the no-heparin group (13% vs. 7.4%; aOR, 2.00).

Patients in the heparin group were also less likely to have a good functional outcome (aOR, 0.78), and there was a nonsignificant increase in risk for death among those patients.

The rate of sICH was 11% in the group that received low-dose heparin; it was 26% in the group that received moderate-dose heparin (aOR, 6.05). The mortality rate was 23% in the low-dose group and 47% in the moderate-dose group (aOR, 5.45).

There was no significant interaction between ASA and heparin on the primary outcome and on sICH occurrence.
 

‘A unique trial’

“MR CLEAN-MED is a unique trial because it investigated a widely used treatment but until now without any proof of effectiveness,” said Dr. van der Steen. The researchers expect that their findings will have a strong impact on the management of patients with acute ischemic stroke. They suggest that the administration of antithrombotic agents during EVT be avoided.

“We consider it probable that the increased risk of sICH explains at least a part of the nonsignificant shift towards a worse functional outcome,” co-investigator Bob Roozenbeek, MD, PhD, a neurologist at the Erasmus Medical Center, said in an interview. “However, to make more definite statements, we will have to do more in-depth analyses.”

It remains unclear whether the periprocedural use of lower dosages of antithrombotic agents or of a single bolus of heparin could be safe and effective, said Dr. van der Steen.

To gain insight into these questions, the investigators will evaluate the effect of the medications and dosages examined in this trial on primary hemostasis and coagulation activity in the trial population. They also plan to examine the effect of primary hemostasis and coagulation activity on risk for sICH and functional outcome.

Enhancing the effectiveness of thrombectomy for acute ischemic stroke continues to be an important goal for stroke therapy, said Mark Fisher, MD, professor of neurology and pathology and laboratory medicine at the University of California, Irvine, who commented on the findings for this news organization.

At least three strategies are available: The use of ancillary antithrombotic medications, neuroprotection, and modulation of the vasoconstrictive properties of the microcirculation.

“Results of MR CLEAN-MED argue against the antithrombotic strategy,” said Dr. Fisher. “The alternate strategies remain viable, and results of interventions using those approaches are awaited with great interest.”

The study was funded by the CONTRAST consortium, which is supported by the Netherlands Cardiovascular Research Initiative and the Brain Foundation Netherlands. Funding also was provided by Stryker, Medtronic, and Cerenovus. Dr. van der Steen and Dr. Fisher have disclosed no relevant financial relationships.

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

Bariatric surgery is associated with a reduction in risk of major adverse cardiac events (MACE), and Roux-en-Y gastric bypass (RYGB) is linked to a greater reduction than sleeve gastrectomy (SG).

Those are the key findings of a retrospective analysis of a large group of patients who received care at the Cleveland Clinic between 1998 and 2017. MACE is defined as first occurrence of coronary artery events, cerebrovascular events, heart failure, nephropathy, atrial fibrillation, and all-cause mortality.

“I think what it tells us is that, in making these choices and in counseling patients about the potential advantages of undergoing bariatric surgery for their obesity and diabetes, that they should know that they’re more likely to be protected by a Roux-en-Y gastric bypass, although certainly sleeve gastrectomy is effective,” said study coauthor Steven E. Nissen, MD, who is the chief academic officer of the Heart and Vascular Institute at the Cleveland Clinic.

Previous studies have shown a benefit to metabolic surgery in patients with type 2 diabetes and obesity, improving diabetes control and altering cardiometabolic risk factors. Others have shown a link between surgery and reduced mortality. Most studies examined the impact of RYGB. SG is a newer procedure, but its relative simplicity and lower complication rate have helped it become the most commonly performed metabolic surgery in the world.

“There was no study to compare gastric bypass and sleeve gastrectomy head to head in terms of reduction in risk of cardiovascular disease. There are studies comparing these two procedures for diabetes control and weight loss, but not specifically in terms of effects on their risk of developing cardiovascular disease. That’s the unique feature of this study,” said lead author Ali Aminian, MD, who is director of the Bariatric and Metabolic Institute at the Cleveland Clinic.

The researchers included 2,287 adults with type 2 diabetes and a body mass index of at least 30 kg/m², with no history of solid organ transplant, severe heart failure, or active cancer. 1,362 underwent RYGB, and 693 SG. Outcomes were compared with 11,435 matched nonsurgical patients.

At 5 years, 13.7% of the RYGB group experienced a MACE (95% confidence interval, 11.4-15.9), compared with 24.7% of the SG group for a relative reduction of 33% (95% CI, 19.0-30.0; adjusted hazard ratio, 0.77; P = .035). The nonsurgical group had a 5-year MACE incidence of 30.4% (95% CI, 29.4-31.5). Compared with usual care, the risk of MACE was lower in both the RYGB group (HR, 0.53; P < .001) and the SG group (HR, 0.69; P < .001). The researchers also analyzed the cumulative incidence of all-cause mortality, myocardial infarction, and ischemic stroke (three-component MACE) at 5 years. The cumulative incidence of three-component MACE at 5 years was 15.5% in the usual care group, 6.4% in the RYGB group (HR, 0.53 versus usual care; P < .001) and 11.8% in the SG group (HR vs. usual care, 0.65; P = .006).

The RYGB group had less nephropathy at 5 years (2.8% vs. 8.3%; HR, 0.47; P = .005), and experienced a greater reduction in weight, glycated hemoglobin, and diabetes and cardiovascular medication use. At 5 years, RYGB was associated with a higher frequency of upper endoscopy (45.8% vs. 35.6%, P < .001) and abdominal surgical procedures (10.8% vs. 5.4%, P = .001), compared with SG.

“Both procedures are extremely safe and extremely effective,” said Dr. Aminian. He pointed out the need to consider multiple factors when choosing between the procedures, including overall health, weight, comorbidities, and the patient’s values and goals.

A few factors may be contraindicated for one procedure or another. The sleeve may worsen severe reflux disease, while the gastric bypass may interfere more with absorption of psychiatric medications. Some patients may have multiple comorbidities that could point to a less risky procedure. “Decision-making should not be solely based on findings of this study. All these conditions need to be considered when patients and surgeons make a final decision about the most appropriate procedure,” said Dr. Aminian.

Dr. Nissen noted that the associations were wide ranging, including classic outcomes like death, stroke, and heart failure, but also extending to heart failure, coronary events, cerebral vascular events, nephropathy, and atrial fibrillation. “I found the nephropathy results to be amongst the most striking, that Roux-en-Y really dramatically reduced the risk of neuropathy,” he added. That’s a particularly important point because end-stage renal disease is a common cause of diabetes mortality.

Dr. Nissen acknowledged the limitations of the retrospective nature of the study, though he feels confident that the relationships are causal. “Bariatric surgery desperately needs a randomized, controlled trial, where both groups get intensive dietary and lifestyle counseling, but one group gets metabolic surgery and the other doesn’t. Given the dramatic effects in diabetic patients of reducing their hemoglobin A1c in a sustained way, reducing their body weight. We think these are very strong data to suggest that we have a major reduction in all the endpoints. If we’re right about this, the randomized controlled trial will show that dramatic effect, and will convince even the skeptics that metabolic surgery is the best way to go.”

Bariatric surgery is associated with a reduction in risk of major adverse cardiac events (MACE), and Roux-en-Y gastric bypass (RYGB) is linked to a greater reduction than sleeve gastrectomy (SG).

Those are the key findings of a retrospective analysis of a large group of patients who received care at the Cleveland Clinic between 1998 and 2017. MACE is defined as first occurrence of coronary artery events, cerebrovascular events, heart failure, nephropathy, atrial fibrillation, and all-cause mortality.

“I think what it tells us is that, in making these choices and in counseling patients about the potential advantages of undergoing bariatric surgery for their obesity and diabetes, that they should know that they’re more likely to be protected by a Roux-en-Y gastric bypass, although certainly sleeve gastrectomy is effective,” said study coauthor Steven E. Nissen, MD, who is the chief academic officer of the Heart and Vascular Institute at the Cleveland Clinic.

Previous studies have shown a benefit to metabolic surgery in patients with type 2 diabetes and obesity, improving diabetes control and altering cardiometabolic risk factors. Others have shown a link between surgery and reduced mortality. Most studies examined the impact of RYGB. SG is a newer procedure, but its relative simplicity and lower complication rate have helped it become the most commonly performed metabolic surgery in the world.

“There was no study to compare gastric bypass and sleeve gastrectomy head to head in terms of reduction in risk of cardiovascular disease. There are studies comparing these two procedures for diabetes control and weight loss, but not specifically in terms of effects on their risk of developing cardiovascular disease. That’s the unique feature of this study,” said lead author Ali Aminian, MD, who is director of the Bariatric and Metabolic Institute at the Cleveland Clinic.

The researchers included 2,287 adults with type 2 diabetes and a body mass index of at least 30 kg/m², with no history of solid organ transplant, severe heart failure, or active cancer. 1,362 underwent RYGB, and 693 SG. Outcomes were compared with 11,435 matched nonsurgical patients.

At 5 years, 13.7% of the RYGB group experienced a MACE (95% confidence interval, 11.4-15.9), compared with 24.7% of the SG group for a relative reduction of 33% (95% CI, 19.0-30.0; adjusted hazard ratio, 0.77; P = .035). The nonsurgical group had a 5-year MACE incidence of 30.4% (95% CI, 29.4-31.5). Compared with usual care, the risk of MACE was lower in both the RYGB group (HR, 0.53; P < .001) and the SG group (HR, 0.69; P < .001). The researchers also analyzed the cumulative incidence of all-cause mortality, myocardial infarction, and ischemic stroke (three-component MACE) at 5 years. The cumulative incidence of three-component MACE at 5 years was 15.5% in the usual care group, 6.4% in the RYGB group (HR, 0.53 versus usual care; P < .001) and 11.8% in the SG group (HR vs. usual care, 0.65; P = .006).

The RYGB group had less nephropathy at 5 years (2.8% vs. 8.3%; HR, 0.47; P = .005), and experienced a greater reduction in weight, glycated hemoglobin, and diabetes and cardiovascular medication use. At 5 years, RYGB was associated with a higher frequency of upper endoscopy (45.8% vs. 35.6%, P < .001) and abdominal surgical procedures (10.8% vs. 5.4%, P = .001), compared with SG.

“Both procedures are extremely safe and extremely effective,” said Dr. Aminian. He pointed out the need to consider multiple factors when choosing between the procedures, including overall health, weight, comorbidities, and the patient’s values and goals.

A few factors may be contraindicated for one procedure or another. The sleeve may worsen severe reflux disease, while the gastric bypass may interfere more with absorption of psychiatric medications. Some patients may have multiple comorbidities that could point to a less risky procedure. “Decision-making should not be solely based on findings of this study. All these conditions need to be considered when patients and surgeons make a final decision about the most appropriate procedure,” said Dr. Aminian.

Dr. Nissen noted that the associations were wide ranging, including classic outcomes like death, stroke, and heart failure, but also extending to heart failure, coronary events, cerebral vascular events, nephropathy, and atrial fibrillation. “I found the nephropathy results to be amongst the most striking, that Roux-en-Y really dramatically reduced the risk of neuropathy,” he added. That’s a particularly important point because end-stage renal disease is a common cause of diabetes mortality.

Dr. Nissen acknowledged the limitations of the retrospective nature of the study, though he feels confident that the relationships are causal. “Bariatric surgery desperately needs a randomized, controlled trial, where both groups get intensive dietary and lifestyle counseling, but one group gets metabolic surgery and the other doesn’t. Given the dramatic effects in diabetic patients of reducing their hemoglobin A1c in a sustained way, reducing their body weight. We think these are very strong data to suggest that we have a major reduction in all the endpoints. If we’re right about this, the randomized controlled trial will show that dramatic effect, and will convince even the skeptics that metabolic surgery is the best way to go.”

Bariatric surgery is associated with a reduction in risk of major adverse cardiac events (MACE), and Roux-en-Y gastric bypass (RYGB) is linked to a greater reduction than sleeve gastrectomy (SG).

Those are the key findings of a retrospective analysis of a large group of patients who received care at the Cleveland Clinic between 1998 and 2017. MACE is defined as first occurrence of coronary artery events, cerebrovascular events, heart failure, nephropathy, atrial fibrillation, and all-cause mortality.

“I think what it tells us is that, in making these choices and in counseling patients about the potential advantages of undergoing bariatric surgery for their obesity and diabetes, that they should know that they’re more likely to be protected by a Roux-en-Y gastric bypass, although certainly sleeve gastrectomy is effective,” said study coauthor Steven E. Nissen, MD, who is the chief academic officer of the Heart and Vascular Institute at the Cleveland Clinic.

Previous studies have shown a benefit to metabolic surgery in patients with type 2 diabetes and obesity, improving diabetes control and altering cardiometabolic risk factors. Others have shown a link between surgery and reduced mortality. Most studies examined the impact of RYGB. SG is a newer procedure, but its relative simplicity and lower complication rate have helped it become the most commonly performed metabolic surgery in the world.

“There was no study to compare gastric bypass and sleeve gastrectomy head to head in terms of reduction in risk of cardiovascular disease. There are studies comparing these two procedures for diabetes control and weight loss, but not specifically in terms of effects on their risk of developing cardiovascular disease. That’s the unique feature of this study,” said lead author Ali Aminian, MD, who is director of the Bariatric and Metabolic Institute at the Cleveland Clinic.

The researchers included 2,287 adults with type 2 diabetes and a body mass index of at least 30 kg/m², with no history of solid organ transplant, severe heart failure, or active cancer. 1,362 underwent RYGB, and 693 SG. Outcomes were compared with 11,435 matched nonsurgical patients.

At 5 years, 13.7% of the RYGB group experienced a MACE (95% confidence interval, 11.4-15.9), compared with 24.7% of the SG group for a relative reduction of 33% (95% CI, 19.0-30.0; adjusted hazard ratio, 0.77; P = .035). The nonsurgical group had a 5-year MACE incidence of 30.4% (95% CI, 29.4-31.5). Compared with usual care, the risk of MACE was lower in both the RYGB group (HR, 0.53; P < .001) and the SG group (HR, 0.69; P < .001). The researchers also analyzed the cumulative incidence of all-cause mortality, myocardial infarction, and ischemic stroke (three-component MACE) at 5 years. The cumulative incidence of three-component MACE at 5 years was 15.5% in the usual care group, 6.4% in the RYGB group (HR, 0.53 versus usual care; P < .001) and 11.8% in the SG group (HR vs. usual care, 0.65; P = .006).

The RYGB group had less nephropathy at 5 years (2.8% vs. 8.3%; HR, 0.47; P = .005), and experienced a greater reduction in weight, glycated hemoglobin, and diabetes and cardiovascular medication use. At 5 years, RYGB was associated with a higher frequency of upper endoscopy (45.8% vs. 35.6%, P < .001) and abdominal surgical procedures (10.8% vs. 5.4%, P = .001), compared with SG.

“Both procedures are extremely safe and extremely effective,” said Dr. Aminian. He pointed out the need to consider multiple factors when choosing between the procedures, including overall health, weight, comorbidities, and the patient’s values and goals.

A few factors may be contraindicated for one procedure or another. The sleeve may worsen severe reflux disease, while the gastric bypass may interfere more with absorption of psychiatric medications. Some patients may have multiple comorbidities that could point to a less risky procedure. “Decision-making should not be solely based on findings of this study. All these conditions need to be considered when patients and surgeons make a final decision about the most appropriate procedure,” said Dr. Aminian.

Dr. Nissen noted that the associations were wide ranging, including classic outcomes like death, stroke, and heart failure, but also extending to heart failure, coronary events, cerebral vascular events, nephropathy, and atrial fibrillation. “I found the nephropathy results to be amongst the most striking, that Roux-en-Y really dramatically reduced the risk of neuropathy,” he added. That’s a particularly important point because end-stage renal disease is a common cause of diabetes mortality.

Dr. Nissen acknowledged the limitations of the retrospective nature of the study, though he feels confident that the relationships are causal. “Bariatric surgery desperately needs a randomized, controlled trial, where both groups get intensive dietary and lifestyle counseling, but one group gets metabolic surgery and the other doesn’t. Given the dramatic effects in diabetic patients of reducing their hemoglobin A1c in a sustained way, reducing their body weight. We think these are very strong data to suggest that we have a major reduction in all the endpoints. If we’re right about this, the randomized controlled trial will show that dramatic effect, and will convince even the skeptics that metabolic surgery is the best way to go.”

Compared with placebo, tranexamic acid did not reduce hematoma growth in patients with intracerebral hemorrhage (ICH), a new study shows.

In the randomized controlled trial, the rate of hematoma expansion was 40.4% among patients who received tranexamic acid and 41.5% among those who received placebo. The degree of disability at 90 days also did not differ between treatment arms.

“Our work has once again shown that tranexamic acid is safe in spontaneous ICH,” said Jingyi Liu, MD, a physician in the neurocritical care unit at Beijing Tiantan Hospital, Capital Medical University, Beijing. “Larger studies with more specified population are needed to further assess safety and efficacy of tranexamic acid in patients with ICH.”

The findings of the TRAIGE study were presented at the virtual European Stroke Organization Conference (ESOC) 2021. They were also published online June 28 in Stroke and Vascular Neurology.
 

Imaging-based patient selection

ICH is often fatal and entails a high risk for disability, the researchers wrote. Approximately 40% of patients with ICH die within a month of onset, and about two-thirds of patients do not achieve long-term functional independence.

Intracerebral hematoma expansion is predictive of poor clinical outcome in ICH. Data indicate that tranexamic acid, an antifibrinolytic agent, reduces hematoma expansion. But evidence of a clinical benefit of tranexamic acid has been elusive, they noted.

This lack of observed benefit may result from the inappropriate selection of research participants. The emergence of imaging biomarkers may help address this potential problem. In recent years, the blend sign and the black hole sign on noncontrast CT, as well as the spot sign on CT angiography, have been associated with higher risk for hematoma expansion and worse clinical outcome, the researchers wrote.

Between January 2015 and March 2020, the investigators enrolled consecutive patients with acute primary spontaneous ICH into their prospective study. Eligible patients presented at any of 10 stroke centers in China. They had the spot sign, blend sign, or black hole sign at admission and were able to receive treatment within 8 hours of onset.

The investigators randomly assigned patients in equal groups to receive placebo (0.9% NaCl) or tranexamic acid. Patients and study investigators were blinded to treatment assignment. Treatment was administered as an intravenous infusion over 8 hours.

The study’s primary endpoint was intracerebral hematoma expansion by 24 hours after start of treatment. Expansion was defined as an increase of > 6 mL or a growth of > 33% from baseline. Secondary endpoints included poor clinical outcome, defined as a Modified Rankin Scale (mRS) score of 4-6, and all-cause mortality, both at 90 days.
 

No differences in disability

The investigators enrolled 171 patients in their study; 24-hour CT images were available for 169 of them. Follow-up data at 90 days were available for 164 patients. The mean age of the patients was 55.9 years, and 72.5% of participants were men. At baseline, the mean ICH volume was 23.7 mL, and the median hematoma volume was 19.8 mL.

All patients received treatment within 8 hours. Hematoma expansion occurred in 40.9% of patients overall; 34.9% had a poor clinical outcome.

The investigators found no significant difference between treatment arms in the rate of hematoma expansion. This outcome occurred in 40.4% of the tranexamic acid group and 41.5% of the placebo group (odds ratio, 0.96; P = .89).

In addition, the researchers found no significant difference in the distribution of mRS scores at day 90 (P = .70). The rate of all-cause mortality at 90 days was lower in the tranexamic acid group (8.1%) than in the control group (10.0%), but this difference was not statistically significant (P = .71).
 

Potential clotting risk

One reason for the lack of observed benefit with tranexamic acid may be an inappropriate sample size, said Dr. Liu. Patient recruitment was difficult, especially in centers that used the spot sign as an inclusion criterion.

“We think a positive result could be seen in a substantially larger sample size,” said Dr. Liu. “Furthermore, we infer from our subgroup analysis that a more specified patient selection and shorter treatment window may be required for better effect.”

In some of their subgroup analyses, the researchers found a trend toward an increased effect in patients with moderate-size hematoma who received treatment in an earlier window. “That could be the targeted population for future studies,” said Dr. Liu. “We are working on further analysis of the population and possibly international collaboration.”

But tranexamic acid also entails risks, said Louis R. Caplan, MD, professor of neurology at Harvard Medical School, Boston, who provided independent commentary on the findings. “Tranexamic acid works on the thrombolytic system, so it increases clotting, and it does have a risk in people who are older and have risk factors for coronary disease and pulmonary embolism.”

As in ischemic stroke, time to treatment is a crucial consideration. Patients with ICH may receive treatment within 5 or 6 hours of onset, but most hemorrhages have reached their maximum size at that point. “The number of people that you can actually help by reducing the size is small,” said Dr. Caplan. “And then reducing the size in most hemorrhages doesn’t make any clinical difference.”

Stereotactic drainage, in which fluid is physically removed, is more likely to lead to long-term improvement for some patients with hemorrhage than limiting expansion, said Dr. Caplan. “That seems to be a more promising therapy,” he added.

The study was supported by the National Key R&D program of China, the National Natural Science Foundation of China, and the Beijing Science and Technology Commission. Dr. Liu and Dr. Caplan have disclosed no relevant financial relationshps.

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

Compared with placebo, tranexamic acid did not reduce hematoma growth in patients with intracerebral hemorrhage (ICH), a new study shows.

In the randomized controlled trial, the rate of hematoma expansion was 40.4% among patients who received tranexamic acid and 41.5% among those who received placebo. The degree of disability at 90 days also did not differ between treatment arms.

“Our work has once again shown that tranexamic acid is safe in spontaneous ICH,” said Jingyi Liu, MD, a physician in the neurocritical care unit at Beijing Tiantan Hospital, Capital Medical University, Beijing. “Larger studies with more specified population are needed to further assess safety and efficacy of tranexamic acid in patients with ICH.”

The findings of the TRAIGE study were presented at the virtual European Stroke Organization Conference (ESOC) 2021. They were also published online June 28 in Stroke and Vascular Neurology.
 

Imaging-based patient selection

ICH is often fatal and entails a high risk for disability, the researchers wrote. Approximately 40% of patients with ICH die within a month of onset, and about two-thirds of patients do not achieve long-term functional independence.

Intracerebral hematoma expansion is predictive of poor clinical outcome in ICH. Data indicate that tranexamic acid, an antifibrinolytic agent, reduces hematoma expansion. But evidence of a clinical benefit of tranexamic acid has been elusive, they noted.

This lack of observed benefit may result from the inappropriate selection of research participants. The emergence of imaging biomarkers may help address this potential problem. In recent years, the blend sign and the black hole sign on noncontrast CT, as well as the spot sign on CT angiography, have been associated with higher risk for hematoma expansion and worse clinical outcome, the researchers wrote.

Between January 2015 and March 2020, the investigators enrolled consecutive patients with acute primary spontaneous ICH into their prospective study. Eligible patients presented at any of 10 stroke centers in China. They had the spot sign, blend sign, or black hole sign at admission and were able to receive treatment within 8 hours of onset.

The investigators randomly assigned patients in equal groups to receive placebo (0.9% NaCl) or tranexamic acid. Patients and study investigators were blinded to treatment assignment. Treatment was administered as an intravenous infusion over 8 hours.

The study’s primary endpoint was intracerebral hematoma expansion by 24 hours after start of treatment. Expansion was defined as an increase of > 6 mL or a growth of > 33% from baseline. Secondary endpoints included poor clinical outcome, defined as a Modified Rankin Scale (mRS) score of 4-6, and all-cause mortality, both at 90 days.
 

No differences in disability

The investigators enrolled 171 patients in their study; 24-hour CT images were available for 169 of them. Follow-up data at 90 days were available for 164 patients. The mean age of the patients was 55.9 years, and 72.5% of participants were men. At baseline, the mean ICH volume was 23.7 mL, and the median hematoma volume was 19.8 mL.

All patients received treatment within 8 hours. Hematoma expansion occurred in 40.9% of patients overall; 34.9% had a poor clinical outcome.

The investigators found no significant difference between treatment arms in the rate of hematoma expansion. This outcome occurred in 40.4% of the tranexamic acid group and 41.5% of the placebo group (odds ratio, 0.96; P = .89).

In addition, the researchers found no significant difference in the distribution of mRS scores at day 90 (P = .70). The rate of all-cause mortality at 90 days was lower in the tranexamic acid group (8.1%) than in the control group (10.0%), but this difference was not statistically significant (P = .71).
 

Potential clotting risk

One reason for the lack of observed benefit with tranexamic acid may be an inappropriate sample size, said Dr. Liu. Patient recruitment was difficult, especially in centers that used the spot sign as an inclusion criterion.

“We think a positive result could be seen in a substantially larger sample size,” said Dr. Liu. “Furthermore, we infer from our subgroup analysis that a more specified patient selection and shorter treatment window may be required for better effect.”

In some of their subgroup analyses, the researchers found a trend toward an increased effect in patients with moderate-size hematoma who received treatment in an earlier window. “That could be the targeted population for future studies,” said Dr. Liu. “We are working on further analysis of the population and possibly international collaboration.”

But tranexamic acid also entails risks, said Louis R. Caplan, MD, professor of neurology at Harvard Medical School, Boston, who provided independent commentary on the findings. “Tranexamic acid works on the thrombolytic system, so it increases clotting, and it does have a risk in people who are older and have risk factors for coronary disease and pulmonary embolism.”

As in ischemic stroke, time to treatment is a crucial consideration. Patients with ICH may receive treatment within 5 or 6 hours of onset, but most hemorrhages have reached their maximum size at that point. “The number of people that you can actually help by reducing the size is small,” said Dr. Caplan. “And then reducing the size in most hemorrhages doesn’t make any clinical difference.”

Stereotactic drainage, in which fluid is physically removed, is more likely to lead to long-term improvement for some patients with hemorrhage than limiting expansion, said Dr. Caplan. “That seems to be a more promising therapy,” he added.

The study was supported by the National Key R&D program of China, the National Natural Science Foundation of China, and the Beijing Science and Technology Commission. Dr. Liu and Dr. Caplan have disclosed no relevant financial relationshps.

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

Compared with placebo, tranexamic acid did not reduce hematoma growth in patients with intracerebral hemorrhage (ICH), a new study shows.

In the randomized controlled trial, the rate of hematoma expansion was 40.4% among patients who received tranexamic acid and 41.5% among those who received placebo. The degree of disability at 90 days also did not differ between treatment arms.

“Our work has once again shown that tranexamic acid is safe in spontaneous ICH,” said Jingyi Liu, MD, a physician in the neurocritical care unit at Beijing Tiantan Hospital, Capital Medical University, Beijing. “Larger studies with more specified population are needed to further assess safety and efficacy of tranexamic acid in patients with ICH.”

The findings of the TRAIGE study were presented at the virtual European Stroke Organization Conference (ESOC) 2021. They were also published online June 28 in Stroke and Vascular Neurology.
 

Imaging-based patient selection

ICH is often fatal and entails a high risk for disability, the researchers wrote. Approximately 40% of patients with ICH die within a month of onset, and about two-thirds of patients do not achieve long-term functional independence.

Intracerebral hematoma expansion is predictive of poor clinical outcome in ICH. Data indicate that tranexamic acid, an antifibrinolytic agent, reduces hematoma expansion. But evidence of a clinical benefit of tranexamic acid has been elusive, they noted.

This lack of observed benefit may result from the inappropriate selection of research participants. The emergence of imaging biomarkers may help address this potential problem. In recent years, the blend sign and the black hole sign on noncontrast CT, as well as the spot sign on CT angiography, have been associated with higher risk for hematoma expansion and worse clinical outcome, the researchers wrote.

Between January 2015 and March 2020, the investigators enrolled consecutive patients with acute primary spontaneous ICH into their prospective study. Eligible patients presented at any of 10 stroke centers in China. They had the spot sign, blend sign, or black hole sign at admission and were able to receive treatment within 8 hours of onset.

The investigators randomly assigned patients in equal groups to receive placebo (0.9% NaCl) or tranexamic acid. Patients and study investigators were blinded to treatment assignment. Treatment was administered as an intravenous infusion over 8 hours.

The study’s primary endpoint was intracerebral hematoma expansion by 24 hours after start of treatment. Expansion was defined as an increase of > 6 mL or a growth of > 33% from baseline. Secondary endpoints included poor clinical outcome, defined as a Modified Rankin Scale (mRS) score of 4-6, and all-cause mortality, both at 90 days.
 

No differences in disability

The investigators enrolled 171 patients in their study; 24-hour CT images were available for 169 of them. Follow-up data at 90 days were available for 164 patients. The mean age of the patients was 55.9 years, and 72.5% of participants were men. At baseline, the mean ICH volume was 23.7 mL, and the median hematoma volume was 19.8 mL.

All patients received treatment within 8 hours. Hematoma expansion occurred in 40.9% of patients overall; 34.9% had a poor clinical outcome.

The investigators found no significant difference between treatment arms in the rate of hematoma expansion. This outcome occurred in 40.4% of the tranexamic acid group and 41.5% of the placebo group (odds ratio, 0.96; P = .89).

In addition, the researchers found no significant difference in the distribution of mRS scores at day 90 (P = .70). The rate of all-cause mortality at 90 days was lower in the tranexamic acid group (8.1%) than in the control group (10.0%), but this difference was not statistically significant (P = .71).
 

Potential clotting risk

One reason for the lack of observed benefit with tranexamic acid may be an inappropriate sample size, said Dr. Liu. Patient recruitment was difficult, especially in centers that used the spot sign as an inclusion criterion.

“We think a positive result could be seen in a substantially larger sample size,” said Dr. Liu. “Furthermore, we infer from our subgroup analysis that a more specified patient selection and shorter treatment window may be required for better effect.”

In some of their subgroup analyses, the researchers found a trend toward an increased effect in patients with moderate-size hematoma who received treatment in an earlier window. “That could be the targeted population for future studies,” said Dr. Liu. “We are working on further analysis of the population and possibly international collaboration.”

But tranexamic acid also entails risks, said Louis R. Caplan, MD, professor of neurology at Harvard Medical School, Boston, who provided independent commentary on the findings. “Tranexamic acid works on the thrombolytic system, so it increases clotting, and it does have a risk in people who are older and have risk factors for coronary disease and pulmonary embolism.”

As in ischemic stroke, time to treatment is a crucial consideration. Patients with ICH may receive treatment within 5 or 6 hours of onset, but most hemorrhages have reached their maximum size at that point. “The number of people that you can actually help by reducing the size is small,” said Dr. Caplan. “And then reducing the size in most hemorrhages doesn’t make any clinical difference.”

Stereotactic drainage, in which fluid is physically removed, is more likely to lead to long-term improvement for some patients with hemorrhage than limiting expansion, said Dr. Caplan. “That seems to be a more promising therapy,” he added.

The study was supported by the National Key R&D program of China, the National Natural Science Foundation of China, and the Beijing Science and Technology Commission. Dr. Liu and Dr. Caplan have disclosed no relevant financial relationshps.

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

Estimating an individual’s risk of cardiovascular disease (CVD) remains the cornerstone of the 2021 European Society of Cardiology guidelines on CVD prevention in clinical practice. The new guidelines were published online Aug. 30 in the European Heart Journal to coincide with presentation at the European Stroke Congress (ESOC) 2021.   

They were developed by an ESOC task force in collaboration with 12 medical societies and with special contribution of the European Association of Preventive Cardiology.

“A chief goal of the task force was to create a single CVD prevention guideline for everyone – for primary care, for hospital care, for guiding clinical practice – so one guideline for all,” said cochair of the guideline committee Frank Visseren, MD, PhD, University Medical Center Utrecht, Netherlands. “We also wanted to make a more personalized CVD prevention guideline, instead of a one-size-fits-all. In clinical practice, people are very, very different, and we really want to have a more individualized prevention guideline,” said Dr. Visseren, as well as provide “more room for shared decision-making.”
 

Prevention at the individual and population levels

The new guidelines also give more attention to CVD prevention in older persons. “Many of our patients are over 70 years old and we really want to have more detail, more guidance on older persons,” said Dr. Visseren.

The guideline is divided into two sections. One section covers CVD prevention at the individual level in apparently healthy people, in patients with established CVD, and in those with diabetes, familial hypercholesterolemia, or chronic kidney disease.

The other section covers CVD prevention at the population level, including public health policy, interventions, and the environment, including putting in place measures to reduce air pollution, use of fossil fuels, and limiting carbon dioxide emissions.

Targets for blood lipids, blood pressure, and glycemic control in diabetes remain in line with recent ESC guidelines on dyslipidemias, hypertension, or diabetes.

However, the guidelines introduce a new stepwise treatment-intensification approach to achieve these targets, with consideration of CVD risk, treatment benefit of risk factors, risk modifiers, comorbidities, and patient preferences.

The 2021 CVD prevention guidelines also embrace the recently published Systemic Coronary Risk Estimation 2 (SCORE2) and Systemic Coronary Risk Estimation 2-Older Persons (SCORE2-OP) algorithms. “The algorithms we are using are a bit old and we want to have more updated risk prediction, because that’s the starting point of CVD prevention,” Dr. Visseren said.

The guidelines also introduce age-specific risk thresholds for risk factor treatments in apparently healthy people and provide estimation of lifetime CVD risk and treatment benefit. This will allow clinicians to have “an informed discussion with patients on lifetime risk and potential treatment benefits,” Dr. Visseren said.

For the first time, the guidelines recommend smoking cessation regardless of whether it leads to weight gain, as weight gain does not lessen the benefits of cessation.

Regarding exercise, adults of all ages should aim for at least 150-300 minutes a week of moderate, or 75-150 minutes a week of vigorous, aerobic physical activity. The guidelines recommend reducing sedentary time and engaging in at least light activity throughout the day.

Regarding nutrition, the guidelines advise adopting a Mediterranean or similar diet; restricting alcohol intake to a maximum of 100 g per week (a standard drink is 8-14 g); eating fish, preferably fatty fish, at least once a week; and restricting consumption of meat, particularly processed meat.

Also for the first time, the guidelines state that bariatric surgery should be considered for obese individuals at elevated risk of CVD when a healthy diet and exercise fail to lead to weight loss that is maintained.

They note that individuals with mental disorders need additional attention and support to improve adherence to lifestyle changes and drug treatment.

They advise consideration of referring patients with heart disease and significant stress and anxiety to psychotherapeutic stress management to reduce stress symptoms and improve CV outcomes.

Potential cost issues that could be considered when implementing the guidelines are also reviewed.

Dr. Visseren acknowledged and thanked the task force members for continuing their work on the guidelines over the 2 “challenging” years.
 

Setting the bar lower?

Discussant for the guideline presentation, Diederick Grobbee, MD, University Medical Center Utrecht, who was not involved in drafting the guidelines, said he does have one conflict of interest, which is a “passion for prevention.” From that perspective, he said the guideline panel “should be applauded; the once-every-5-year issuing of the prevention guidelines is a major event.”

Dr. Grobbee noted that the working group “really tried to follow their ambitions and goals, in a way making the guidelines simpler, or perhaps setting the bar not initially as high as we used to do, which may, in fact, sometimes scare off physicians and patients alike.”

“We’ve had prevention guidelines for quite some time now, yet looking at what is accomplished in practice is sobering,” said Dr. Grobbee. Introducing a stepwise approach is “really appealing,” he added.

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

Estimating an individual’s risk of cardiovascular disease (CVD) remains the cornerstone of the 2021 European Society of Cardiology guidelines on CVD prevention in clinical practice. The new guidelines were published online Aug. 30 in the European Heart Journal to coincide with presentation at the European Stroke Congress (ESOC) 2021.   

They were developed by an ESOC task force in collaboration with 12 medical societies and with special contribution of the European Association of Preventive Cardiology.

“A chief goal of the task force was to create a single CVD prevention guideline for everyone – for primary care, for hospital care, for guiding clinical practice – so one guideline for all,” said cochair of the guideline committee Frank Visseren, MD, PhD, University Medical Center Utrecht, Netherlands. “We also wanted to make a more personalized CVD prevention guideline, instead of a one-size-fits-all. In clinical practice, people are very, very different, and we really want to have a more individualized prevention guideline,” said Dr. Visseren, as well as provide “more room for shared decision-making.”
 

Prevention at the individual and population levels

The new guidelines also give more attention to CVD prevention in older persons. “Many of our patients are over 70 years old and we really want to have more detail, more guidance on older persons,” said Dr. Visseren.

The guideline is divided into two sections. One section covers CVD prevention at the individual level in apparently healthy people, in patients with established CVD, and in those with diabetes, familial hypercholesterolemia, or chronic kidney disease.

The other section covers CVD prevention at the population level, including public health policy, interventions, and the environment, including putting in place measures to reduce air pollution, use of fossil fuels, and limiting carbon dioxide emissions.

Targets for blood lipids, blood pressure, and glycemic control in diabetes remain in line with recent ESC guidelines on dyslipidemias, hypertension, or diabetes.

However, the guidelines introduce a new stepwise treatment-intensification approach to achieve these targets, with consideration of CVD risk, treatment benefit of risk factors, risk modifiers, comorbidities, and patient preferences.

The 2021 CVD prevention guidelines also embrace the recently published Systemic Coronary Risk Estimation 2 (SCORE2) and Systemic Coronary Risk Estimation 2-Older Persons (SCORE2-OP) algorithms. “The algorithms we are using are a bit old and we want to have more updated risk prediction, because that’s the starting point of CVD prevention,” Dr. Visseren said.

The guidelines also introduce age-specific risk thresholds for risk factor treatments in apparently healthy people and provide estimation of lifetime CVD risk and treatment benefit. This will allow clinicians to have “an informed discussion with patients on lifetime risk and potential treatment benefits,” Dr. Visseren said.

For the first time, the guidelines recommend smoking cessation regardless of whether it leads to weight gain, as weight gain does not lessen the benefits of cessation.

Regarding exercise, adults of all ages should aim for at least 150-300 minutes a week of moderate, or 75-150 minutes a week of vigorous, aerobic physical activity. The guidelines recommend reducing sedentary time and engaging in at least light activity throughout the day.

Regarding nutrition, the guidelines advise adopting a Mediterranean or similar diet; restricting alcohol intake to a maximum of 100 g per week (a standard drink is 8-14 g); eating fish, preferably fatty fish, at least once a week; and restricting consumption of meat, particularly processed meat.

Also for the first time, the guidelines state that bariatric surgery should be considered for obese individuals at elevated risk of CVD when a healthy diet and exercise fail to lead to weight loss that is maintained.

They note that individuals with mental disorders need additional attention and support to improve adherence to lifestyle changes and drug treatment.

They advise consideration of referring patients with heart disease and significant stress and anxiety to psychotherapeutic stress management to reduce stress symptoms and improve CV outcomes.

Potential cost issues that could be considered when implementing the guidelines are also reviewed.

Dr. Visseren acknowledged and thanked the task force members for continuing their work on the guidelines over the 2 “challenging” years.
 

Setting the bar lower?

Discussant for the guideline presentation, Diederick Grobbee, MD, University Medical Center Utrecht, who was not involved in drafting the guidelines, said he does have one conflict of interest, which is a “passion for prevention.” From that perspective, he said the guideline panel “should be applauded; the once-every-5-year issuing of the prevention guidelines is a major event.”

Dr. Grobbee noted that the working group “really tried to follow their ambitions and goals, in a way making the guidelines simpler, or perhaps setting the bar not initially as high as we used to do, which may, in fact, sometimes scare off physicians and patients alike.”

“We’ve had prevention guidelines for quite some time now, yet looking at what is accomplished in practice is sobering,” said Dr. Grobbee. Introducing a stepwise approach is “really appealing,” he added.

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

Estimating an individual’s risk of cardiovascular disease (CVD) remains the cornerstone of the 2021 European Society of Cardiology guidelines on CVD prevention in clinical practice. The new guidelines were published online Aug. 30 in the European Heart Journal to coincide with presentation at the European Stroke Congress (ESOC) 2021.   

They were developed by an ESOC task force in collaboration with 12 medical societies and with special contribution of the European Association of Preventive Cardiology.

“A chief goal of the task force was to create a single CVD prevention guideline for everyone – for primary care, for hospital care, for guiding clinical practice – so one guideline for all,” said cochair of the guideline committee Frank Visseren, MD, PhD, University Medical Center Utrecht, Netherlands. “We also wanted to make a more personalized CVD prevention guideline, instead of a one-size-fits-all. In clinical practice, people are very, very different, and we really want to have a more individualized prevention guideline,” said Dr. Visseren, as well as provide “more room for shared decision-making.”
 

Prevention at the individual and population levels

The new guidelines also give more attention to CVD prevention in older persons. “Many of our patients are over 70 years old and we really want to have more detail, more guidance on older persons,” said Dr. Visseren.

The guideline is divided into two sections. One section covers CVD prevention at the individual level in apparently healthy people, in patients with established CVD, and in those with diabetes, familial hypercholesterolemia, or chronic kidney disease.

The other section covers CVD prevention at the population level, including public health policy, interventions, and the environment, including putting in place measures to reduce air pollution, use of fossil fuels, and limiting carbon dioxide emissions.

Targets for blood lipids, blood pressure, and glycemic control in diabetes remain in line with recent ESC guidelines on dyslipidemias, hypertension, or diabetes.

However, the guidelines introduce a new stepwise treatment-intensification approach to achieve these targets, with consideration of CVD risk, treatment benefit of risk factors, risk modifiers, comorbidities, and patient preferences.

The 2021 CVD prevention guidelines also embrace the recently published Systemic Coronary Risk Estimation 2 (SCORE2) and Systemic Coronary Risk Estimation 2-Older Persons (SCORE2-OP) algorithms. “The algorithms we are using are a bit old and we want to have more updated risk prediction, because that’s the starting point of CVD prevention,” Dr. Visseren said.

The guidelines also introduce age-specific risk thresholds for risk factor treatments in apparently healthy people and provide estimation of lifetime CVD risk and treatment benefit. This will allow clinicians to have “an informed discussion with patients on lifetime risk and potential treatment benefits,” Dr. Visseren said.

For the first time, the guidelines recommend smoking cessation regardless of whether it leads to weight gain, as weight gain does not lessen the benefits of cessation.

Regarding exercise, adults of all ages should aim for at least 150-300 minutes a week of moderate, or 75-150 minutes a week of vigorous, aerobic physical activity. The guidelines recommend reducing sedentary time and engaging in at least light activity throughout the day.

Regarding nutrition, the guidelines advise adopting a Mediterranean or similar diet; restricting alcohol intake to a maximum of 100 g per week (a standard drink is 8-14 g); eating fish, preferably fatty fish, at least once a week; and restricting consumption of meat, particularly processed meat.

Also for the first time, the guidelines state that bariatric surgery should be considered for obese individuals at elevated risk of CVD when a healthy diet and exercise fail to lead to weight loss that is maintained.

They note that individuals with mental disorders need additional attention and support to improve adherence to lifestyle changes and drug treatment.

They advise consideration of referring patients with heart disease and significant stress and anxiety to psychotherapeutic stress management to reduce stress symptoms and improve CV outcomes.

Potential cost issues that could be considered when implementing the guidelines are also reviewed.

Dr. Visseren acknowledged and thanked the task force members for continuing their work on the guidelines over the 2 “challenging” years.
 

Setting the bar lower?

Discussant for the guideline presentation, Diederick Grobbee, MD, University Medical Center Utrecht, who was not involved in drafting the guidelines, said he does have one conflict of interest, which is a “passion for prevention.” From that perspective, he said the guideline panel “should be applauded; the once-every-5-year issuing of the prevention guidelines is a major event.”

Dr. Grobbee noted that the working group “really tried to follow their ambitions and goals, in a way making the guidelines simpler, or perhaps setting the bar not initially as high as we used to do, which may, in fact, sometimes scare off physicians and patients alike.”

“We’ve had prevention guidelines for quite some time now, yet looking at what is accomplished in practice is sobering,” said Dr. Grobbee. Introducing a stepwise approach is “really appealing,” he added.

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

Carotid artery stenting (CAS) and carotid endarterectomy (CEA) provided comparable outcomes over time in asymptomatic patients receiving good medical therapy in the largest trial to date of what to do with severe carotid artery narrowing that is yet to cause a stroke.

aaM Photography, Ltd./iStock

Among more than 3,600 patients, stenting and surgery performed by experienced physicians involved a 1.0% risk for causing disabling stroke or death within 30 days.

The annual rate of fatal or disabling strokes was about 0.5% with either procedure over an average 5 years’ follow-up – essentially halving the annual stroke risk had neither procedure been performed, according to Alison Halliday, MD, principal investigator of the Asymptomatic Carotid Surgery Trial-2 (ACST-2).

The results were reported Aug. 29 in a Hot Line session at the virtual annual congress of the European Society of Cardiology and published simultaneously online in The Lancet.

Session chair Gilles Montalescot, MD, Sorbonne University, Paris, noted that ACST-2 doubled the number of randomly assigned patients with asymptomatic carotid stenosis studied in previous trials, “so, a huge contribution to the evidence base in this field and apparently good news for both revascularization techniques.”
 

Thirty-day and 5-year outcomes

The trial was conducted in 33 countries between January 2008 and December 2020, enrolling 3,625 patients (70% were male; mean age, 70 years) with carotid stenosis of at least 60% on ultrasonography, in whom stenting or surgery was suitable but both the doctor and patient were “substantially uncertain” which procedure to prefer.

Among the 1,811 patients assigned to stenting, 87% underwent the procedure at a median of 14 days; 6% crossed over to surgery, typically because of a highly calcified lesion or a more tortuous carotid than anticipated; and 6% had no intervention.

Among the 1,814 patients assigned to surgery, 92% had the procedure at a median of 14 days; 3% crossed over to stenting, typically because of patient or doctor preference or reluctance to undergo general anesthesia; and 4% had no intervention.

Patients without complications who had stenting stayed on average 1 day less than did those undergoing surgery.

During an earlier press briefing, Dr. Halliday highlighted the need for procedural competency and said doctors had to submit a record of their CEA or CAS experience and, consistent with current guidelines, had to demonstrate an independently verified stroke or death rate of 6% or less for symptomatic patients and 3% or lower for asymptomatic patients.

The results showed the 30-day risk for death, myocardial infarction (MI), or any stroke was 3.9% with carotid stenting and 3.2% with surgery (P = .26).

But with stenting, there was a slightly higher risk for procedural nondisabling strokes (48 vs. 29; P = .03), including 15 strokes vs. 5 strokes, respectively, that left patients with no residual symptoms. This is “consistent with large, recent nationally representative registry data,” observed Dr. Halliday, of the University of Oxford (England).

For those undergoing surgery, cranial nerve palsies were reported in 5.4% vs. no patients undergoing stenting.

At 5 years, the nonprocedural fatal or disabling stroke rate was 2.5% in each group (rate ratio [RR], 0.98; P = .91), with any nonprocedural stroke occurring in 5.3% of patients with stenting vs. 4.5% with surgery (RR, 1.16; P = .33).

The investigators performed a meta-analysis combining the ACST-2 results with those of eight prior trials (four in asymptomatic and four in symptomatic patients) that yielded a similar nonsignificant result for any nonprocedural stroke (RR, 1.11; P = .21).

Based on the results from ACST-2 plus the major trials, stenting and surgery involve “similar risks and similar benefits,” Dr. Halliday concluded.

Discussant Marco Roffi, MD, University Hospital of Geneva, said, “In centers with documented expertise, carotid artery stenting should be offered as an alternative to carotid endarterectomy in patients with asymptomatic stenosis and suitable anatomy.”

While the trial provides “good news” for patients, he pointed out that a reduction in the sample size from 5,000 to 3,625 limited the statistical power and that enrollment over a long period of time may have introduced confounders, such as changes in equipment technique, and medical therapy.

Also, many centers enrolled few patients, raising the concern over low-volume centers and operators, Dr. Roffi said. “We know that 8% of the centers enrolled 39% of the patients,” and “information on the credentialing and experience of the interventionalists was limited.”

Further, a lack of systematic MI assessment may have favored the surgery group, and more recent developments in stenting with the potential of reducing periprocedural stroke were rarely used, such as proximal emboli protection in only 15% and double-layer stents in 11%.

Friedhelm Beyersdorf, MD, University Hospital of Freiburg, Germany, said that, as a vascular surgeon, he finds it understandable that there might be a higher incidence of nonfatal strokes when treating carotid stenosis with stents, given the vulnerability of these lesions.

“Nevertheless, the main conclusion from the entire study is that carotid artery treatment is extremely safe, it has to be done in order to avoid strokes, and, obviously, there seems to be an advantage for surgery in terms of nondisabling stroke,” he said.

Session chair Dr. Montalescot, however, said that what the study cannot address – and what was the subject of many online audience comments – is whether either intervention should be performed in these patients. 

Unlike earlier trials comparing interventions to medical therapy, Dr. Halliday said ACST-2 enrolled patients for whom the decision had been made that revascularization was needed. In addition, 99%-100% were receiving antithrombotic therapy at baseline, 85%-90% were receiving antihypertensives, and about 85% were taking statins.

Longer-term follow-up should provide a better picture of the nonprocedural stroke risk, with patients asked annually about exactly what medications and doses they are taking, she said.

“We will have an enormous list of exactly what’s gone on and the intensity of that therapy, which is, of course, much more intense than when we carried out our first trial. But these were people in whom a procedure was thought to be necessary,” she noted.

When asked during the press conference which procedure she would choose, Dr. Halliday, a surgeon, observed that patient preference is important but that the nature of the lesion itself often determines the optimal choice.

“If you know the competence of the people doing it is equal, then the less invasive procedure – providing it has good long-term viability, and that’s why we’re following for 10 years – is the more important,” she added.

The study was funded by the UK Medical Research Council and Health Technology Assessment Programme. Dr. Halliday reports no relevant financial relationships.

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

Carotid artery stenting (CAS) and carotid endarterectomy (CEA) provided comparable outcomes over time in asymptomatic patients receiving good medical therapy in the largest trial to date of what to do with severe carotid artery narrowing that is yet to cause a stroke.

aaM Photography, Ltd./iStock

Among more than 3,600 patients, stenting and surgery performed by experienced physicians involved a 1.0% risk for causing disabling stroke or death within 30 days.

The annual rate of fatal or disabling strokes was about 0.5% with either procedure over an average 5 years’ follow-up – essentially halving the annual stroke risk had neither procedure been performed, according to Alison Halliday, MD, principal investigator of the Asymptomatic Carotid Surgery Trial-2 (ACST-2).

The results were reported Aug. 29 in a Hot Line session at the virtual annual congress of the European Society of Cardiology and published simultaneously online in The Lancet.

Session chair Gilles Montalescot, MD, Sorbonne University, Paris, noted that ACST-2 doubled the number of randomly assigned patients with asymptomatic carotid stenosis studied in previous trials, “so, a huge contribution to the evidence base in this field and apparently good news for both revascularization techniques.”
 

Thirty-day and 5-year outcomes

The trial was conducted in 33 countries between January 2008 and December 2020, enrolling 3,625 patients (70% were male; mean age, 70 years) with carotid stenosis of at least 60% on ultrasonography, in whom stenting or surgery was suitable but both the doctor and patient were “substantially uncertain” which procedure to prefer.

Among the 1,811 patients assigned to stenting, 87% underwent the procedure at a median of 14 days; 6% crossed over to surgery, typically because of a highly calcified lesion or a more tortuous carotid than anticipated; and 6% had no intervention.

Among the 1,814 patients assigned to surgery, 92% had the procedure at a median of 14 days; 3% crossed over to stenting, typically because of patient or doctor preference or reluctance to undergo general anesthesia; and 4% had no intervention.

Patients without complications who had stenting stayed on average 1 day less than did those undergoing surgery.

During an earlier press briefing, Dr. Halliday highlighted the need for procedural competency and said doctors had to submit a record of their CEA or CAS experience and, consistent with current guidelines, had to demonstrate an independently verified stroke or death rate of 6% or less for symptomatic patients and 3% or lower for asymptomatic patients.

The results showed the 30-day risk for death, myocardial infarction (MI), or any stroke was 3.9% with carotid stenting and 3.2% with surgery (P = .26).

But with stenting, there was a slightly higher risk for procedural nondisabling strokes (48 vs. 29; P = .03), including 15 strokes vs. 5 strokes, respectively, that left patients with no residual symptoms. This is “consistent with large, recent nationally representative registry data,” observed Dr. Halliday, of the University of Oxford (England).

For those undergoing surgery, cranial nerve palsies were reported in 5.4% vs. no patients undergoing stenting.

At 5 years, the nonprocedural fatal or disabling stroke rate was 2.5% in each group (rate ratio [RR], 0.98; P = .91), with any nonprocedural stroke occurring in 5.3% of patients with stenting vs. 4.5% with surgery (RR, 1.16; P = .33).

The investigators performed a meta-analysis combining the ACST-2 results with those of eight prior trials (four in asymptomatic and four in symptomatic patients) that yielded a similar nonsignificant result for any nonprocedural stroke (RR, 1.11; P = .21).

Based on the results from ACST-2 plus the major trials, stenting and surgery involve “similar risks and similar benefits,” Dr. Halliday concluded.

Discussant Marco Roffi, MD, University Hospital of Geneva, said, “In centers with documented expertise, carotid artery stenting should be offered as an alternative to carotid endarterectomy in patients with asymptomatic stenosis and suitable anatomy.”

While the trial provides “good news” for patients, he pointed out that a reduction in the sample size from 5,000 to 3,625 limited the statistical power and that enrollment over a long period of time may have introduced confounders, such as changes in equipment technique, and medical therapy.

Also, many centers enrolled few patients, raising the concern over low-volume centers and operators, Dr. Roffi said. “We know that 8% of the centers enrolled 39% of the patients,” and “information on the credentialing and experience of the interventionalists was limited.”

Further, a lack of systematic MI assessment may have favored the surgery group, and more recent developments in stenting with the potential of reducing periprocedural stroke were rarely used, such as proximal emboli protection in only 15% and double-layer stents in 11%.

Friedhelm Beyersdorf, MD, University Hospital of Freiburg, Germany, said that, as a vascular surgeon, he finds it understandable that there might be a higher incidence of nonfatal strokes when treating carotid stenosis with stents, given the vulnerability of these lesions.

“Nevertheless, the main conclusion from the entire study is that carotid artery treatment is extremely safe, it has to be done in order to avoid strokes, and, obviously, there seems to be an advantage for surgery in terms of nondisabling stroke,” he said.

Session chair Dr. Montalescot, however, said that what the study cannot address – and what was the subject of many online audience comments – is whether either intervention should be performed in these patients. 

Unlike earlier trials comparing interventions to medical therapy, Dr. Halliday said ACST-2 enrolled patients for whom the decision had been made that revascularization was needed. In addition, 99%-100% were receiving antithrombotic therapy at baseline, 85%-90% were receiving antihypertensives, and about 85% were taking statins.

Longer-term follow-up should provide a better picture of the nonprocedural stroke risk, with patients asked annually about exactly what medications and doses they are taking, she said.

“We will have an enormous list of exactly what’s gone on and the intensity of that therapy, which is, of course, much more intense than when we carried out our first trial. But these were people in whom a procedure was thought to be necessary,” she noted.

When asked during the press conference which procedure she would choose, Dr. Halliday, a surgeon, observed that patient preference is important but that the nature of the lesion itself often determines the optimal choice.

“If you know the competence of the people doing it is equal, then the less invasive procedure – providing it has good long-term viability, and that’s why we’re following for 10 years – is the more important,” she added.

The study was funded by the UK Medical Research Council and Health Technology Assessment Programme. Dr. Halliday reports no relevant financial relationships.

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

Carotid artery stenting (CAS) and carotid endarterectomy (CEA) provided comparable outcomes over time in asymptomatic patients receiving good medical therapy in the largest trial to date of what to do with severe carotid artery narrowing that is yet to cause a stroke.

aaM Photography, Ltd./iStock

Among more than 3,600 patients, stenting and surgery performed by experienced physicians involved a 1.0% risk for causing disabling stroke or death within 30 days.

The annual rate of fatal or disabling strokes was about 0.5% with either procedure over an average 5 years’ follow-up – essentially halving the annual stroke risk had neither procedure been performed, according to Alison Halliday, MD, principal investigator of the Asymptomatic Carotid Surgery Trial-2 (ACST-2).

The results were reported Aug. 29 in a Hot Line session at the virtual annual congress of the European Society of Cardiology and published simultaneously online in The Lancet.

Session chair Gilles Montalescot, MD, Sorbonne University, Paris, noted that ACST-2 doubled the number of randomly assigned patients with asymptomatic carotid stenosis studied in previous trials, “so, a huge contribution to the evidence base in this field and apparently good news for both revascularization techniques.”
 

Thirty-day and 5-year outcomes

The trial was conducted in 33 countries between January 2008 and December 2020, enrolling 3,625 patients (70% were male; mean age, 70 years) with carotid stenosis of at least 60% on ultrasonography, in whom stenting or surgery was suitable but both the doctor and patient were “substantially uncertain” which procedure to prefer.

Among the 1,811 patients assigned to stenting, 87% underwent the procedure at a median of 14 days; 6% crossed over to surgery, typically because of a highly calcified lesion or a more tortuous carotid than anticipated; and 6% had no intervention.

Among the 1,814 patients assigned to surgery, 92% had the procedure at a median of 14 days; 3% crossed over to stenting, typically because of patient or doctor preference or reluctance to undergo general anesthesia; and 4% had no intervention.

Patients without complications who had stenting stayed on average 1 day less than did those undergoing surgery.

During an earlier press briefing, Dr. Halliday highlighted the need for procedural competency and said doctors had to submit a record of their CEA or CAS experience and, consistent with current guidelines, had to demonstrate an independently verified stroke or death rate of 6% or less for symptomatic patients and 3% or lower for asymptomatic patients.

The results showed the 30-day risk for death, myocardial infarction (MI), or any stroke was 3.9% with carotid stenting and 3.2% with surgery (P = .26).

But with stenting, there was a slightly higher risk for procedural nondisabling strokes (48 vs. 29; P = .03), including 15 strokes vs. 5 strokes, respectively, that left patients with no residual symptoms. This is “consistent with large, recent nationally representative registry data,” observed Dr. Halliday, of the University of Oxford (England).

For those undergoing surgery, cranial nerve palsies were reported in 5.4% vs. no patients undergoing stenting.

At 5 years, the nonprocedural fatal or disabling stroke rate was 2.5% in each group (rate ratio [RR], 0.98; P = .91), with any nonprocedural stroke occurring in 5.3% of patients with stenting vs. 4.5% with surgery (RR, 1.16; P = .33).

The investigators performed a meta-analysis combining the ACST-2 results with those of eight prior trials (four in asymptomatic and four in symptomatic patients) that yielded a similar nonsignificant result for any nonprocedural stroke (RR, 1.11; P = .21).

Based on the results from ACST-2 plus the major trials, stenting and surgery involve “similar risks and similar benefits,” Dr. Halliday concluded.

Discussant Marco Roffi, MD, University Hospital of Geneva, said, “In centers with documented expertise, carotid artery stenting should be offered as an alternative to carotid endarterectomy in patients with asymptomatic stenosis and suitable anatomy.”

While the trial provides “good news” for patients, he pointed out that a reduction in the sample size from 5,000 to 3,625 limited the statistical power and that enrollment over a long period of time may have introduced confounders, such as changes in equipment technique, and medical therapy.

Also, many centers enrolled few patients, raising the concern over low-volume centers and operators, Dr. Roffi said. “We know that 8% of the centers enrolled 39% of the patients,” and “information on the credentialing and experience of the interventionalists was limited.”

Further, a lack of systematic MI assessment may have favored the surgery group, and more recent developments in stenting with the potential of reducing periprocedural stroke were rarely used, such as proximal emboli protection in only 15% and double-layer stents in 11%.

Friedhelm Beyersdorf, MD, University Hospital of Freiburg, Germany, said that, as a vascular surgeon, he finds it understandable that there might be a higher incidence of nonfatal strokes when treating carotid stenosis with stents, given the vulnerability of these lesions.

“Nevertheless, the main conclusion from the entire study is that carotid artery treatment is extremely safe, it has to be done in order to avoid strokes, and, obviously, there seems to be an advantage for surgery in terms of nondisabling stroke,” he said.

Session chair Dr. Montalescot, however, said that what the study cannot address – and what was the subject of many online audience comments – is whether either intervention should be performed in these patients. 

Unlike earlier trials comparing interventions to medical therapy, Dr. Halliday said ACST-2 enrolled patients for whom the decision had been made that revascularization was needed. In addition, 99%-100% were receiving antithrombotic therapy at baseline, 85%-90% were receiving antihypertensives, and about 85% were taking statins.

Longer-term follow-up should provide a better picture of the nonprocedural stroke risk, with patients asked annually about exactly what medications and doses they are taking, she said.

“We will have an enormous list of exactly what’s gone on and the intensity of that therapy, which is, of course, much more intense than when we carried out our first trial. But these were people in whom a procedure was thought to be necessary,” she noted.

When asked during the press conference which procedure she would choose, Dr. Halliday, a surgeon, observed that patient preference is important but that the nature of the lesion itself often determines the optimal choice.

“If you know the competence of the people doing it is equal, then the less invasive procedure – providing it has good long-term viability, and that’s why we’re following for 10 years – is the more important,” she added.

The study was funded by the UK Medical Research Council and Health Technology Assessment Programme. Dr. Halliday reports no relevant financial relationships.

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

The first global trial to compare the cardiovascular (CV) safety of two therapies for prostate cancer proved inconclusive because of inadequate enrollment and events, but the study is a harbinger of growth in the emerging specialty of cardio-oncology, according to experts.

European Society of Cardiology

“Many new cancer agents have extended patient survival, yet some of these agents have significant potential cardiovascular toxicity,” said Renato D. Lopes, MD, in presenting a study at the annual congress of the European Society of Cardiology.

In the context of improving survival in patients with or at risk for both cancer and cardiovascular disease, he suggested that the prostate cancer study he led could be “a model for interdisciplinary collaboration” needed to address the relative and sometimes competing risks of these disease states.

This point was seconded by several pioneers in cardio-oncology who participated in the discussion of the results of the trial, called PRONOUNCE.

“We know many drugs in oncology increase cardiovascular risk, so these are the types of trials we need,” according Thomas M. Suter, MD, who leads the cardio-oncology service at the University Hospital, Berne, Switzerland. He was the ESC-invited discussant for PRONOUNCE.
 

More than 100 centers in 12 countries involved

In PRONOUNCE, 545 patients with prostate cancer and established atherosclerotic cardiovascular disease were randomized to degarelix, a gonadotropin-releasing hormone antagonist, or leuprolide, a GnRH agonist. The patients were enrolled at 113 participating centers in 12 countries. All of the patients had an indication for an androgen-deprivation therapy (ADT).

In numerous previous studies, “ADT has been associated with higher CV morbidity and mortality, particularly in men with preexisting CV disease,” explained Dr. Lopes, but the relative cardiovascular safety of GnRH agonists relative to GnRH antagonists has been “controversial.”

The PRONOUNCE study was designed to resolve this issue, but the study was terminated early because of slow enrollment (not related to the COVID-19 pandemic). The planned enrollment was 900 patients.

In addition, the rate of major adverse cardiovascular events (MACE), defined as myocardial infarction, stroke, or death, was lower over the course of follow-up than anticipated in the study design.
 

No significant difference on primary endpoint

At the end of 12 months, MACE occurred in 11 (4.1%) of patients randomized to leuprolide and 15 (5.5%) of those randomized to degarelix. The greater hazard ratio for MACE in the degarelix group did not approach statistical significance (hazard ratio, 1.28; P = .53).

As a result, the question of the relative CV safety of these drugs “remains unresolved,” according to Dr. Lopes, professor of medicine at Duke University Medical Center, Durham, N.C.

This does not diminish the need to answer this question. In the addition to the fact that cancer is a malignancy primarily of advancing age when CV disease is prevalent – the mean age in this study was 73 years and 44% were over age 75 – it is often an indolent disease with long periods of survival, according to Dr. Lopes. About half of prostate cancer patients have concomitant CV disease, and about half will receive ADT at some point in their treatment.

In patients receiving ADT, leuprolide is far more commonly used than GnRH antagonists, which are offered in only about 4% of patients, according to data cited by Dr. Lopes. The underlying hypothesis of this study was that leuprolide is associated with greater CV risk, which might have been relevant to a risk-benefit calculation, if the hypothesis had been confirmed.
 

Cancer drugs can increase CV risk

Based on experimental data, “there is concern the leuprolide is involved in plaque destabilization,” said Dr. Lopes, but he noted that ADTs in general are associated with adverse metabolic changes, including increases in LDL cholesterol, insulin resistance, and body fat, all of which could be relevant to CV risk.

It is the improving rates of survival for prostate cancer as well for other types of cancer that have increased attention to the potential for cancer drugs to increase CV risk, another major cause of early mortality. For these competing risks, objective data are needed to evaluate a relative risk-to-benefit ratio for treatment choices.

This dilemma led the ESC to recently establish its Council on Cardio-Oncology, and many centers around the world are also creating interdisciplinary groups to guide treatment choices for patients with both diseases.

“You will certainly get a lot of referrals,” said Rudolf de Boer, MD, professor of translational cardiology, University Medical Center, Groningen, Netherlands. Basing his remark on his own experience starting a cardio-oncology clinic at his institution, he called this work challenging and agreed that the need for objective data is urgent.

“We need data to provide common ground on which to judge relative risks,” Dr. de Boer said. He also praised the PRONOUNCE investigators for their efforts even if the data failed to answer the question posed.

The PRONOUNCE results were published online in Circulation at the time of Dr. Lopes’s presentation.

The study received funding from Ferring Pharmaceuticals. Dr. Lopes reports financial relationships with Bristol-Myers Squibb, GlaxoSmithKline, Medtronic, Pfizer, and Sanofi. Dr. Suter reports financial relationships with Boehringer Ingelheim, GlaxoSmithKline, and Roche. Dr. de Boer reports financial relationships with AstraZeneca, Abbott, Bristol-Myers Squibb, Novartis, Novo Nordisk, and Roche.

The first global trial to compare the cardiovascular (CV) safety of two therapies for prostate cancer proved inconclusive because of inadequate enrollment and events, but the study is a harbinger of growth in the emerging specialty of cardio-oncology, according to experts.

European Society of Cardiology

“Many new cancer agents have extended patient survival, yet some of these agents have significant potential cardiovascular toxicity,” said Renato D. Lopes, MD, in presenting a study at the annual congress of the European Society of Cardiology.

In the context of improving survival in patients with or at risk for both cancer and cardiovascular disease, he suggested that the prostate cancer study he led could be “a model for interdisciplinary collaboration” needed to address the relative and sometimes competing risks of these disease states.

This point was seconded by several pioneers in cardio-oncology who participated in the discussion of the results of the trial, called PRONOUNCE.

“We know many drugs in oncology increase cardiovascular risk, so these are the types of trials we need,” according Thomas M. Suter, MD, who leads the cardio-oncology service at the University Hospital, Berne, Switzerland. He was the ESC-invited discussant for PRONOUNCE.
 

More than 100 centers in 12 countries involved

In PRONOUNCE, 545 patients with prostate cancer and established atherosclerotic cardiovascular disease were randomized to degarelix, a gonadotropin-releasing hormone antagonist, or leuprolide, a GnRH agonist. The patients were enrolled at 113 participating centers in 12 countries. All of the patients had an indication for an androgen-deprivation therapy (ADT).

In numerous previous studies, “ADT has been associated with higher CV morbidity and mortality, particularly in men with preexisting CV disease,” explained Dr. Lopes, but the relative cardiovascular safety of GnRH agonists relative to GnRH antagonists has been “controversial.”

The PRONOUNCE study was designed to resolve this issue, but the study was terminated early because of slow enrollment (not related to the COVID-19 pandemic). The planned enrollment was 900 patients.

In addition, the rate of major adverse cardiovascular events (MACE), defined as myocardial infarction, stroke, or death, was lower over the course of follow-up than anticipated in the study design.
 

No significant difference on primary endpoint

At the end of 12 months, MACE occurred in 11 (4.1%) of patients randomized to leuprolide and 15 (5.5%) of those randomized to degarelix. The greater hazard ratio for MACE in the degarelix group did not approach statistical significance (hazard ratio, 1.28; P = .53).

As a result, the question of the relative CV safety of these drugs “remains unresolved,” according to Dr. Lopes, professor of medicine at Duke University Medical Center, Durham, N.C.

This does not diminish the need to answer this question. In the addition to the fact that cancer is a malignancy primarily of advancing age when CV disease is prevalent – the mean age in this study was 73 years and 44% were over age 75 – it is often an indolent disease with long periods of survival, according to Dr. Lopes. About half of prostate cancer patients have concomitant CV disease, and about half will receive ADT at some point in their treatment.

In patients receiving ADT, leuprolide is far more commonly used than GnRH antagonists, which are offered in only about 4% of patients, according to data cited by Dr. Lopes. The underlying hypothesis of this study was that leuprolide is associated with greater CV risk, which might have been relevant to a risk-benefit calculation, if the hypothesis had been confirmed.
 

Cancer drugs can increase CV risk

Based on experimental data, “there is concern the leuprolide is involved in plaque destabilization,” said Dr. Lopes, but he noted that ADTs in general are associated with adverse metabolic changes, including increases in LDL cholesterol, insulin resistance, and body fat, all of which could be relevant to CV risk.

It is the improving rates of survival for prostate cancer as well for other types of cancer that have increased attention to the potential for cancer drugs to increase CV risk, another major cause of early mortality. For these competing risks, objective data are needed to evaluate a relative risk-to-benefit ratio for treatment choices.

This dilemma led the ESC to recently establish its Council on Cardio-Oncology, and many centers around the world are also creating interdisciplinary groups to guide treatment choices for patients with both diseases.

“You will certainly get a lot of referrals,” said Rudolf de Boer, MD, professor of translational cardiology, University Medical Center, Groningen, Netherlands. Basing his remark on his own experience starting a cardio-oncology clinic at his institution, he called this work challenging and agreed that the need for objective data is urgent.

“We need data to provide common ground on which to judge relative risks,” Dr. de Boer said. He also praised the PRONOUNCE investigators for their efforts even if the data failed to answer the question posed.

The PRONOUNCE results were published online in Circulation at the time of Dr. Lopes’s presentation.

The study received funding from Ferring Pharmaceuticals. Dr. Lopes reports financial relationships with Bristol-Myers Squibb, GlaxoSmithKline, Medtronic, Pfizer, and Sanofi. Dr. Suter reports financial relationships with Boehringer Ingelheim, GlaxoSmithKline, and Roche. Dr. de Boer reports financial relationships with AstraZeneca, Abbott, Bristol-Myers Squibb, Novartis, Novo Nordisk, and Roche.

The first global trial to compare the cardiovascular (CV) safety of two therapies for prostate cancer proved inconclusive because of inadequate enrollment and events, but the study is a harbinger of growth in the emerging specialty of cardio-oncology, according to experts.

European Society of Cardiology

“Many new cancer agents have extended patient survival, yet some of these agents have significant potential cardiovascular toxicity,” said Renato D. Lopes, MD, in presenting a study at the annual congress of the European Society of Cardiology.

In the context of improving survival in patients with or at risk for both cancer and cardiovascular disease, he suggested that the prostate cancer study he led could be “a model for interdisciplinary collaboration” needed to address the relative and sometimes competing risks of these disease states.

This point was seconded by several pioneers in cardio-oncology who participated in the discussion of the results of the trial, called PRONOUNCE.

“We know many drugs in oncology increase cardiovascular risk, so these are the types of trials we need,” according Thomas M. Suter, MD, who leads the cardio-oncology service at the University Hospital, Berne, Switzerland. He was the ESC-invited discussant for PRONOUNCE.
 

More than 100 centers in 12 countries involved

In PRONOUNCE, 545 patients with prostate cancer and established atherosclerotic cardiovascular disease were randomized to degarelix, a gonadotropin-releasing hormone antagonist, or leuprolide, a GnRH agonist. The patients were enrolled at 113 participating centers in 12 countries. All of the patients had an indication for an androgen-deprivation therapy (ADT).

In numerous previous studies, “ADT has been associated with higher CV morbidity and mortality, particularly in men with preexisting CV disease,” explained Dr. Lopes, but the relative cardiovascular safety of GnRH agonists relative to GnRH antagonists has been “controversial.”

The PRONOUNCE study was designed to resolve this issue, but the study was terminated early because of slow enrollment (not related to the COVID-19 pandemic). The planned enrollment was 900 patients.

In addition, the rate of major adverse cardiovascular events (MACE), defined as myocardial infarction, stroke, or death, was lower over the course of follow-up than anticipated in the study design.
 

No significant difference on primary endpoint

At the end of 12 months, MACE occurred in 11 (4.1%) of patients randomized to leuprolide and 15 (5.5%) of those randomized to degarelix. The greater hazard ratio for MACE in the degarelix group did not approach statistical significance (hazard ratio, 1.28; P = .53).

As a result, the question of the relative CV safety of these drugs “remains unresolved,” according to Dr. Lopes, professor of medicine at Duke University Medical Center, Durham, N.C.

This does not diminish the need to answer this question. In the addition to the fact that cancer is a malignancy primarily of advancing age when CV disease is prevalent – the mean age in this study was 73 years and 44% were over age 75 – it is often an indolent disease with long periods of survival, according to Dr. Lopes. About half of prostate cancer patients have concomitant CV disease, and about half will receive ADT at some point in their treatment.

In patients receiving ADT, leuprolide is far more commonly used than GnRH antagonists, which are offered in only about 4% of patients, according to data cited by Dr. Lopes. The underlying hypothesis of this study was that leuprolide is associated with greater CV risk, which might have been relevant to a risk-benefit calculation, if the hypothesis had been confirmed.
 

Cancer drugs can increase CV risk

Based on experimental data, “there is concern the leuprolide is involved in plaque destabilization,” said Dr. Lopes, but he noted that ADTs in general are associated with adverse metabolic changes, including increases in LDL cholesterol, insulin resistance, and body fat, all of which could be relevant to CV risk.

It is the improving rates of survival for prostate cancer as well for other types of cancer that have increased attention to the potential for cancer drugs to increase CV risk, another major cause of early mortality. For these competing risks, objective data are needed to evaluate a relative risk-to-benefit ratio for treatment choices.

This dilemma led the ESC to recently establish its Council on Cardio-Oncology, and many centers around the world are also creating interdisciplinary groups to guide treatment choices for patients with both diseases.

“You will certainly get a lot of referrals,” said Rudolf de Boer, MD, professor of translational cardiology, University Medical Center, Groningen, Netherlands. Basing his remark on his own experience starting a cardio-oncology clinic at his institution, he called this work challenging and agreed that the need for objective data is urgent.

“We need data to provide common ground on which to judge relative risks,” Dr. de Boer said. He also praised the PRONOUNCE investigators for their efforts even if the data failed to answer the question posed.

The PRONOUNCE results were published online in Circulation at the time of Dr. Lopes’s presentation.

The study received funding from Ferring Pharmaceuticals. Dr. Lopes reports financial relationships with Bristol-Myers Squibb, GlaxoSmithKline, Medtronic, Pfizer, and Sanofi. Dr. Suter reports financial relationships with Boehringer Ingelheim, GlaxoSmithKline, and Roche. Dr. de Boer reports financial relationships with AstraZeneca, Abbott, Bristol-Myers Squibb, Novartis, Novo Nordisk, and Roche.