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Step-up diet: Less-intensive way to ID eosinophilic esophagitis food triggers?
PHILADELPHIA – While traditional elimination diets for eosinophilic esophagitis are highly restrictive and endoscopically intensive, a new “step-up” approach may offer a superior empiric scheme for identifying food triggers, according to Stuart J. Spechler, MD.
The recently described step-up approach may be preferable to the standard empiric six-food elimination diet, which has a 72% success rate but is challenging to implement, according to Dr. Spechler, chief of the division of gastroenterology, Baylor University Medical Center at Dallas.
“That’s an extremely demanding, time-consuming, inconvenient, and expensive thing to do. It requires at least seven endoscopies, probably more, performed over a period of 42 weeks,” Dr. Spechler said here at Digestive Diseases: New Advances, jointly provided by Rutgers and Global Academy for Medical Education.
In contrast, the step-up approach recently described by Molina-Infante et al. in the Journal of Allergy and Clinical Immunology (2018 Mar 6. doi: 10.1016/j.jaci.2018.02.028) consists of a two-food elimination diet escalated to a four- and six-food elimination diet as needed.
This diet, which the researchers described as a “2-4-6” approach, starts with elimination of milk and wheat, the two most common food triggers for eosinophilic esophagitis. If patients do not respond, eggs and soy/legumes are eliminated, and if that fails, nuts and seafood are eliminated.
Once patients do respond, foods are reintroduced one at a time over 6 weeks with repeat endoscopy and biopsy, according to the report.
Molina-Infante and coauthors further described results of the diet in 220 patients with eosinophilic esophagitis. Of that group, investigators said 90 patients refused dietary therapy.
However, for the remaining 130 patients, 74 responded to the diet, the investigators reported.
Of 74 responders, 56 (43%) achieved remission at the first step in which milk and wheat were eliminated, results show, while an additional 10 had remission after the step up to four-food elimination, and another 8 had remission after the final step up to six-food elimination.
Dr. Spechler said his current take on diet therapy for eosinophilic esophagitis would be to start with the two-food elimination diet.
That first step alone identified about three-quarters of the patients who eventually would respond to the step-up approach in the Molina-Infante study, he observed.
For patients who do not respond and are motivated to continue, Dr. Spechler said he would move up to the four-food elimination diet, which identified about 90% of patients who eventually responded.
However, Dr. Spechler said he would consider the final step-up only in “exceptionally highly motivated” patients, since that step seems to identify very few additional responders.
“They got very little benefit here from going all the way up to a six-food elimination diet,” Dr. Spechler said.
Patient acceptance may be one major barrier to any dietary approach to treatment of eosinophilic esophagitis, regardless of how intensive the approach is.
“Ninety patients just flat-out refused to try the diet, so this is not a popular form of therapy,” Dr. Spechler noted.
However, diet is one of three valid treatment options for patients who do have an established diagnosis of eosinophilic esophagitis, the other two being proton pump inhibitors (PPIs) or 6-8 weeks of topical steroids, according to Dr. Spechler.
“If you’re going to use diet, I think you begin with that two-food elimination diet,“ he said. “Fortunately, most of the patients who don’t respond to diet will respond to PPIs or steroids.”
Dr. Spechler reported disclosures related to Ironwood Pharmaceuticals and Takeda Pharmaceuticals.
Global Academy and this news organization are owned by the same company.
PHILADELPHIA – While traditional elimination diets for eosinophilic esophagitis are highly restrictive and endoscopically intensive, a new “step-up” approach may offer a superior empiric scheme for identifying food triggers, according to Stuart J. Spechler, MD.
The recently described step-up approach may be preferable to the standard empiric six-food elimination diet, which has a 72% success rate but is challenging to implement, according to Dr. Spechler, chief of the division of gastroenterology, Baylor University Medical Center at Dallas.
“That’s an extremely demanding, time-consuming, inconvenient, and expensive thing to do. It requires at least seven endoscopies, probably more, performed over a period of 42 weeks,” Dr. Spechler said here at Digestive Diseases: New Advances, jointly provided by Rutgers and Global Academy for Medical Education.
In contrast, the step-up approach recently described by Molina-Infante et al. in the Journal of Allergy and Clinical Immunology (2018 Mar 6. doi: 10.1016/j.jaci.2018.02.028) consists of a two-food elimination diet escalated to a four- and six-food elimination diet as needed.
This diet, which the researchers described as a “2-4-6” approach, starts with elimination of milk and wheat, the two most common food triggers for eosinophilic esophagitis. If patients do not respond, eggs and soy/legumes are eliminated, and if that fails, nuts and seafood are eliminated.
Once patients do respond, foods are reintroduced one at a time over 6 weeks with repeat endoscopy and biopsy, according to the report.
Molina-Infante and coauthors further described results of the diet in 220 patients with eosinophilic esophagitis. Of that group, investigators said 90 patients refused dietary therapy.
However, for the remaining 130 patients, 74 responded to the diet, the investigators reported.
Of 74 responders, 56 (43%) achieved remission at the first step in which milk and wheat were eliminated, results show, while an additional 10 had remission after the step up to four-food elimination, and another 8 had remission after the final step up to six-food elimination.
Dr. Spechler said his current take on diet therapy for eosinophilic esophagitis would be to start with the two-food elimination diet.
That first step alone identified about three-quarters of the patients who eventually would respond to the step-up approach in the Molina-Infante study, he observed.
For patients who do not respond and are motivated to continue, Dr. Spechler said he would move up to the four-food elimination diet, which identified about 90% of patients who eventually responded.
However, Dr. Spechler said he would consider the final step-up only in “exceptionally highly motivated” patients, since that step seems to identify very few additional responders.
“They got very little benefit here from going all the way up to a six-food elimination diet,” Dr. Spechler said.
Patient acceptance may be one major barrier to any dietary approach to treatment of eosinophilic esophagitis, regardless of how intensive the approach is.
“Ninety patients just flat-out refused to try the diet, so this is not a popular form of therapy,” Dr. Spechler noted.
However, diet is one of three valid treatment options for patients who do have an established diagnosis of eosinophilic esophagitis, the other two being proton pump inhibitors (PPIs) or 6-8 weeks of topical steroids, according to Dr. Spechler.
“If you’re going to use diet, I think you begin with that two-food elimination diet,“ he said. “Fortunately, most of the patients who don’t respond to diet will respond to PPIs or steroids.”
Dr. Spechler reported disclosures related to Ironwood Pharmaceuticals and Takeda Pharmaceuticals.
Global Academy and this news organization are owned by the same company.
PHILADELPHIA – While traditional elimination diets for eosinophilic esophagitis are highly restrictive and endoscopically intensive, a new “step-up” approach may offer a superior empiric scheme for identifying food triggers, according to Stuart J. Spechler, MD.
The recently described step-up approach may be preferable to the standard empiric six-food elimination diet, which has a 72% success rate but is challenging to implement, according to Dr. Spechler, chief of the division of gastroenterology, Baylor University Medical Center at Dallas.
“That’s an extremely demanding, time-consuming, inconvenient, and expensive thing to do. It requires at least seven endoscopies, probably more, performed over a period of 42 weeks,” Dr. Spechler said here at Digestive Diseases: New Advances, jointly provided by Rutgers and Global Academy for Medical Education.
In contrast, the step-up approach recently described by Molina-Infante et al. in the Journal of Allergy and Clinical Immunology (2018 Mar 6. doi: 10.1016/j.jaci.2018.02.028) consists of a two-food elimination diet escalated to a four- and six-food elimination diet as needed.
This diet, which the researchers described as a “2-4-6” approach, starts with elimination of milk and wheat, the two most common food triggers for eosinophilic esophagitis. If patients do not respond, eggs and soy/legumes are eliminated, and if that fails, nuts and seafood are eliminated.
Once patients do respond, foods are reintroduced one at a time over 6 weeks with repeat endoscopy and biopsy, according to the report.
Molina-Infante and coauthors further described results of the diet in 220 patients with eosinophilic esophagitis. Of that group, investigators said 90 patients refused dietary therapy.
However, for the remaining 130 patients, 74 responded to the diet, the investigators reported.
Of 74 responders, 56 (43%) achieved remission at the first step in which milk and wheat were eliminated, results show, while an additional 10 had remission after the step up to four-food elimination, and another 8 had remission after the final step up to six-food elimination.
Dr. Spechler said his current take on diet therapy for eosinophilic esophagitis would be to start with the two-food elimination diet.
That first step alone identified about three-quarters of the patients who eventually would respond to the step-up approach in the Molina-Infante study, he observed.
For patients who do not respond and are motivated to continue, Dr. Spechler said he would move up to the four-food elimination diet, which identified about 90% of patients who eventually responded.
However, Dr. Spechler said he would consider the final step-up only in “exceptionally highly motivated” patients, since that step seems to identify very few additional responders.
“They got very little benefit here from going all the way up to a six-food elimination diet,” Dr. Spechler said.
Patient acceptance may be one major barrier to any dietary approach to treatment of eosinophilic esophagitis, regardless of how intensive the approach is.
“Ninety patients just flat-out refused to try the diet, so this is not a popular form of therapy,” Dr. Spechler noted.
However, diet is one of three valid treatment options for patients who do have an established diagnosis of eosinophilic esophagitis, the other two being proton pump inhibitors (PPIs) or 6-8 weeks of topical steroids, according to Dr. Spechler.
“If you’re going to use diet, I think you begin with that two-food elimination diet,“ he said. “Fortunately, most of the patients who don’t respond to diet will respond to PPIs or steroids.”
Dr. Spechler reported disclosures related to Ironwood Pharmaceuticals and Takeda Pharmaceuticals.
Global Academy and this news organization are owned by the same company.
EXPERT ANALYSIS FROM DIGESTIVE DISEASES: NEW ADVANCES
Do not miss cannabis use in gastroparesis patients
PHILADELPHIA – When evaluating potential causes of gastroparesis, cannabis use is a “do not miss” diagnosis that is easy to overlook and likely on the rise, according to Anthony J. Lembo, MD.
“This is not an infrequent problem, and I’ve even missed it a couple of times,” said Dr. Lembo, director of the GI Motility Laboratory at Beth Israel Deaconess Medical Center, Boston.
The rate of U.S. emergency department visits for vomiting with cannabis use disorder rose from 2.3 to 13.3 per 100,000 visits from 2006 to 2013, according to an analysis recently published by Dr. Lembo and colleagues (J Clin Gastroenterol. 2017 Oct 31. doi: 10.1097/MCG.0000000000000944).
The study showed that men between 20 and 29 years were the most common group presenting for vomiting with cannabis use disorder.
“Remember, 90% of people with chronic gastroparesis are women, so a young male is a red flag for cannabinoid use, whether or not you’ve got the right history,” Dr. Lembo told attendees at the meeting, jointly provided by Rutgers and Global Academy for Medical Education.
Dr. Lembo recounted an example from his own practice where a young male patient with recurrent nausea and vomiting denied cannabis use in the presence of family members.
“It was only after we managed to hospitalize him because he was losing so much weight that he came out and talked to one of the residents that he was an actually a daily pot smoker,” Dr. Lembo said. “Once we stopped it, the symptoms went away.”
Clinicians in states where cannabis use is increasing might need to be particularly alert for cannabis-related issues. According to the study by Dr. Lembo, the Midwest and West regions registered higher rates of vomiting with cannabis use disorder, compared with the Northeast and South.
Whether cannabinoids also can be a treatment for nausea or vomiting is a frequently asked question, Dr. Lembo said.
While there are no data for smoked marijuana, Dr. Lembo said, .
Dronabinol is indicated for adults for the treatment of chemotherapy-associated nausea and vomiting in patients who don’t respond adequately to conventional antiemetics, according to the agent’s prescribing information.
The cannabinoid medication is an isomer of tetrahydrocannabinol (THC), one of the active compounds in marijuana, according to Dr. Lembo.
“If you smoke marijuana, the levels go up high very quickly,” Dr. Lembo said. “If you take dronabinol, it takes 45 minutes to an hour. It’s a slower rise of it, so people are less likely to abuse dronabinol.”
In his talk, Dr. Lembo reported disclosures related to Allergan, Ironwood Pharmaceuticals, Salix Pharmaceuticals, and Takeda Pharmaceuticals.
Global Academy for Medical Education and this news organization are owned by the same company.
PHILADELPHIA – When evaluating potential causes of gastroparesis, cannabis use is a “do not miss” diagnosis that is easy to overlook and likely on the rise, according to Anthony J. Lembo, MD.
“This is not an infrequent problem, and I’ve even missed it a couple of times,” said Dr. Lembo, director of the GI Motility Laboratory at Beth Israel Deaconess Medical Center, Boston.
The rate of U.S. emergency department visits for vomiting with cannabis use disorder rose from 2.3 to 13.3 per 100,000 visits from 2006 to 2013, according to an analysis recently published by Dr. Lembo and colleagues (J Clin Gastroenterol. 2017 Oct 31. doi: 10.1097/MCG.0000000000000944).
The study showed that men between 20 and 29 years were the most common group presenting for vomiting with cannabis use disorder.
“Remember, 90% of people with chronic gastroparesis are women, so a young male is a red flag for cannabinoid use, whether or not you’ve got the right history,” Dr. Lembo told attendees at the meeting, jointly provided by Rutgers and Global Academy for Medical Education.
Dr. Lembo recounted an example from his own practice where a young male patient with recurrent nausea and vomiting denied cannabis use in the presence of family members.
“It was only after we managed to hospitalize him because he was losing so much weight that he came out and talked to one of the residents that he was an actually a daily pot smoker,” Dr. Lembo said. “Once we stopped it, the symptoms went away.”
Clinicians in states where cannabis use is increasing might need to be particularly alert for cannabis-related issues. According to the study by Dr. Lembo, the Midwest and West regions registered higher rates of vomiting with cannabis use disorder, compared with the Northeast and South.
Whether cannabinoids also can be a treatment for nausea or vomiting is a frequently asked question, Dr. Lembo said.
While there are no data for smoked marijuana, Dr. Lembo said, .
Dronabinol is indicated for adults for the treatment of chemotherapy-associated nausea and vomiting in patients who don’t respond adequately to conventional antiemetics, according to the agent’s prescribing information.
The cannabinoid medication is an isomer of tetrahydrocannabinol (THC), one of the active compounds in marijuana, according to Dr. Lembo.
“If you smoke marijuana, the levels go up high very quickly,” Dr. Lembo said. “If you take dronabinol, it takes 45 minutes to an hour. It’s a slower rise of it, so people are less likely to abuse dronabinol.”
In his talk, Dr. Lembo reported disclosures related to Allergan, Ironwood Pharmaceuticals, Salix Pharmaceuticals, and Takeda Pharmaceuticals.
Global Academy for Medical Education and this news organization are owned by the same company.
PHILADELPHIA – When evaluating potential causes of gastroparesis, cannabis use is a “do not miss” diagnosis that is easy to overlook and likely on the rise, according to Anthony J. Lembo, MD.
“This is not an infrequent problem, and I’ve even missed it a couple of times,” said Dr. Lembo, director of the GI Motility Laboratory at Beth Israel Deaconess Medical Center, Boston.
The rate of U.S. emergency department visits for vomiting with cannabis use disorder rose from 2.3 to 13.3 per 100,000 visits from 2006 to 2013, according to an analysis recently published by Dr. Lembo and colleagues (J Clin Gastroenterol. 2017 Oct 31. doi: 10.1097/MCG.0000000000000944).
The study showed that men between 20 and 29 years were the most common group presenting for vomiting with cannabis use disorder.
“Remember, 90% of people with chronic gastroparesis are women, so a young male is a red flag for cannabinoid use, whether or not you’ve got the right history,” Dr. Lembo told attendees at the meeting, jointly provided by Rutgers and Global Academy for Medical Education.
Dr. Lembo recounted an example from his own practice where a young male patient with recurrent nausea and vomiting denied cannabis use in the presence of family members.
“It was only after we managed to hospitalize him because he was losing so much weight that he came out and talked to one of the residents that he was an actually a daily pot smoker,” Dr. Lembo said. “Once we stopped it, the symptoms went away.”
Clinicians in states where cannabis use is increasing might need to be particularly alert for cannabis-related issues. According to the study by Dr. Lembo, the Midwest and West regions registered higher rates of vomiting with cannabis use disorder, compared with the Northeast and South.
Whether cannabinoids also can be a treatment for nausea or vomiting is a frequently asked question, Dr. Lembo said.
While there are no data for smoked marijuana, Dr. Lembo said, .
Dronabinol is indicated for adults for the treatment of chemotherapy-associated nausea and vomiting in patients who don’t respond adequately to conventional antiemetics, according to the agent’s prescribing information.
The cannabinoid medication is an isomer of tetrahydrocannabinol (THC), one of the active compounds in marijuana, according to Dr. Lembo.
“If you smoke marijuana, the levels go up high very quickly,” Dr. Lembo said. “If you take dronabinol, it takes 45 minutes to an hour. It’s a slower rise of it, so people are less likely to abuse dronabinol.”
In his talk, Dr. Lembo reported disclosures related to Allergan, Ironwood Pharmaceuticals, Salix Pharmaceuticals, and Takeda Pharmaceuticals.
Global Academy for Medical Education and this news organization are owned by the same company.
REPORTING FROM DIGESTIVE DISEASES: NEW ADVANCES
VIDEO: No short-term link found between PPIs, myocardial infarction
in a large retrospective insurance claims study.
SOURCE: AMERICAN GASTROENTEROLOGICAL ASSOCIATION
Over a median follow-up of 2-3 months, estimated weighted risks of first-ever MI were low and similar regardless of whether patients started PPIs or histamine2 receptor antagonists (H2RAs), reported Suzanne N. Landi of the University of North Carolina at Chapel Hill, and her associates. “Contrary to prior literature, our analyses do not indicate increased risk of MI in PPI initiators compared to histamine2-receptor antagonist initiators,” they wrote in the March issue of Gastroenterology.
Epidemiologic studies have produced mixed findings on PPI use and MI risk. Animal models and ex vivo studies of human tissue indicate that PPIs might harm coronary vessels by increasing plasma levels of asymmetrical dimethylarginine, which counteracts the vasoprotective activity of endothelial nitrous oxide synthase, the investigators noted. To further assess PPIs and risk of MI while minimizing potential confounding, they studied new users of either prescription PPIs or an active comparator, prescription H2RAs. The dataset included administrative claims for more than 5 million patients with no MI history who were enrolled in commercial insurance plans or Medicare Supplemental Insurance plans. The study data spanned from 2001 to 2014, and patients were followed from their initial antacid prescription until they either developed a first-ever MI, stopped their medication, or left their insurance plan. Median follow-up times were 60 days in patients with commercial insurance and 96 days in patients with Medicare Supplemental Insurance, which employers provide for individuals who are at least 65 years old.
After controlling for numerous measurable clinical and demographic confounders, the estimated 12-month risk of MI was about 2 cases per 1,000 commercially insured patients and about 8 cases per 1,000 Medicare Supplemental Insurance enrollees. The estimated 12-month risk of MI did not significantly differ between users of PPIs and H2RAs, regardless of whether they were enrolled in commercial insurance plans (weighted risk difference per 1,000 users, –0.08; 95% confidence interval, –0.51 to 0.36) or Medicare Supplemental Insurance (weighted risk difference per 1,000 users, –0.45; 95% CI, –1.53 to 0.58) plans.
Each antacid class also conferred a similar estimated risk of MI at 36 months, with weighted risk differences of 0.44 (95% CI, –0.90 to 1.63) per 1,000 commercial plan enrollees and –0.33 (95% CI, –4.40 to 3.46) per 1,000 Medicare Supplemental Insurance plan enrollees, the researchers reported. Weighted estimated risk ratios also were similar between drug classes, ranging from 0.87 (95% CI, 0.76 to 0.99) at 3 months among Medicare Supplemental Insurance enrollees to 1.08 (95% CI, 0.87 to 1.35) at 36 months among commercial insurance plan members.
“Previous studies have examined the risk of MI in PPI users and compared directly to nonusers, which may have resulted in stronger confounding by indication and other risk factors, such as BMI [body mass index] and baseline cardiovascular disease,” the investigators wrote. “Physicians and patients should not avoid starting a PPI because of concerns related to MI risk.”
The researchers received no grant support for this study. Ms. Landi disclosed a student fellowship from UCB Biosciences.
SOURCE: Source: Landi SN et al. Gastroenterology. 2017 Nov 6. doi: 10.1053/j.gastro.2017.10.042.
In the late 2000s, several large epidemiologic studies suggested that proton pump inhibitors (PPIs) increase the risk for MI in users of clopidogrel. There was a proposed mechanism: PPIs competitively inhibit cytochrome P450 isoenzymes, which blocked clopidogrel activation and, ex vivo, increased platelet aggregation. It sounded scary – but fortunately, some reassuring data quickly emerged. In 2007, the COGENT trial randomized patients with cardiovascular disease to a PPI/clopidogrel versus a placebo/clopidogrel combination pill. After 3 years of follow-up, there was no difference in rates of death or cardiovascular events. In the glaring light of this randomized controlled trial data, earlier studies didn’t look so convincing.
So why won’t the PPI/MI issue die? In part because COGENT was a relatively small study. It included 3,761 patients, but the main result depended on 109 cardiovascular events. Naysayers have argued that perhaps if COGENT had been a bigger study, the result would have been different.
In this context, the epidemiologic study by Suzanne Landi and her associates provides further reassurance that PPIs do not cause MI. Two insurance cohorts comprising over 5 million patients were used to compare PPI users with histamine2-receptor antagonist users after adjusting for baseline differences between the two groups. The large size of the dataset allowed the authors to make precise estimates; we can say with confidence that there was no clinically relevant PPI/MI risk in these data.
Can we forget about PPIs and MI? These days, my patients worry more about dementia or chronic kidney disease. But the PPI/MI story is worth remembering. Large epidemiologic studies are sometimes contradicted by subsequent studies and need to be evaluated in context.
Daniel E. Freedberg, MD, MS, is an assistant professor of medicine at the Columbia University Medical Center, New York. He has consulted for Pfizer.
In the late 2000s, several large epidemiologic studies suggested that proton pump inhibitors (PPIs) increase the risk for MI in users of clopidogrel. There was a proposed mechanism: PPIs competitively inhibit cytochrome P450 isoenzymes, which blocked clopidogrel activation and, ex vivo, increased platelet aggregation. It sounded scary – but fortunately, some reassuring data quickly emerged. In 2007, the COGENT trial randomized patients with cardiovascular disease to a PPI/clopidogrel versus a placebo/clopidogrel combination pill. After 3 years of follow-up, there was no difference in rates of death or cardiovascular events. In the glaring light of this randomized controlled trial data, earlier studies didn’t look so convincing.
So why won’t the PPI/MI issue die? In part because COGENT was a relatively small study. It included 3,761 patients, but the main result depended on 109 cardiovascular events. Naysayers have argued that perhaps if COGENT had been a bigger study, the result would have been different.
In this context, the epidemiologic study by Suzanne Landi and her associates provides further reassurance that PPIs do not cause MI. Two insurance cohorts comprising over 5 million patients were used to compare PPI users with histamine2-receptor antagonist users after adjusting for baseline differences between the two groups. The large size of the dataset allowed the authors to make precise estimates; we can say with confidence that there was no clinically relevant PPI/MI risk in these data.
Can we forget about PPIs and MI? These days, my patients worry more about dementia or chronic kidney disease. But the PPI/MI story is worth remembering. Large epidemiologic studies are sometimes contradicted by subsequent studies and need to be evaluated in context.
Daniel E. Freedberg, MD, MS, is an assistant professor of medicine at the Columbia University Medical Center, New York. He has consulted for Pfizer.
In the late 2000s, several large epidemiologic studies suggested that proton pump inhibitors (PPIs) increase the risk for MI in users of clopidogrel. There was a proposed mechanism: PPIs competitively inhibit cytochrome P450 isoenzymes, which blocked clopidogrel activation and, ex vivo, increased platelet aggregation. It sounded scary – but fortunately, some reassuring data quickly emerged. In 2007, the COGENT trial randomized patients with cardiovascular disease to a PPI/clopidogrel versus a placebo/clopidogrel combination pill. After 3 years of follow-up, there was no difference in rates of death or cardiovascular events. In the glaring light of this randomized controlled trial data, earlier studies didn’t look so convincing.
So why won’t the PPI/MI issue die? In part because COGENT was a relatively small study. It included 3,761 patients, but the main result depended on 109 cardiovascular events. Naysayers have argued that perhaps if COGENT had been a bigger study, the result would have been different.
In this context, the epidemiologic study by Suzanne Landi and her associates provides further reassurance that PPIs do not cause MI. Two insurance cohorts comprising over 5 million patients were used to compare PPI users with histamine2-receptor antagonist users after adjusting for baseline differences between the two groups. The large size of the dataset allowed the authors to make precise estimates; we can say with confidence that there was no clinically relevant PPI/MI risk in these data.
Can we forget about PPIs and MI? These days, my patients worry more about dementia or chronic kidney disease. But the PPI/MI story is worth remembering. Large epidemiologic studies are sometimes contradicted by subsequent studies and need to be evaluated in context.
Daniel E. Freedberg, MD, MS, is an assistant professor of medicine at the Columbia University Medical Center, New York. He has consulted for Pfizer.
in a large retrospective insurance claims study.
SOURCE: AMERICAN GASTROENTEROLOGICAL ASSOCIATION
Over a median follow-up of 2-3 months, estimated weighted risks of first-ever MI were low and similar regardless of whether patients started PPIs or histamine2 receptor antagonists (H2RAs), reported Suzanne N. Landi of the University of North Carolina at Chapel Hill, and her associates. “Contrary to prior literature, our analyses do not indicate increased risk of MI in PPI initiators compared to histamine2-receptor antagonist initiators,” they wrote in the March issue of Gastroenterology.
Epidemiologic studies have produced mixed findings on PPI use and MI risk. Animal models and ex vivo studies of human tissue indicate that PPIs might harm coronary vessels by increasing plasma levels of asymmetrical dimethylarginine, which counteracts the vasoprotective activity of endothelial nitrous oxide synthase, the investigators noted. To further assess PPIs and risk of MI while minimizing potential confounding, they studied new users of either prescription PPIs or an active comparator, prescription H2RAs. The dataset included administrative claims for more than 5 million patients with no MI history who were enrolled in commercial insurance plans or Medicare Supplemental Insurance plans. The study data spanned from 2001 to 2014, and patients were followed from their initial antacid prescription until they either developed a first-ever MI, stopped their medication, or left their insurance plan. Median follow-up times were 60 days in patients with commercial insurance and 96 days in patients with Medicare Supplemental Insurance, which employers provide for individuals who are at least 65 years old.
After controlling for numerous measurable clinical and demographic confounders, the estimated 12-month risk of MI was about 2 cases per 1,000 commercially insured patients and about 8 cases per 1,000 Medicare Supplemental Insurance enrollees. The estimated 12-month risk of MI did not significantly differ between users of PPIs and H2RAs, regardless of whether they were enrolled in commercial insurance plans (weighted risk difference per 1,000 users, –0.08; 95% confidence interval, –0.51 to 0.36) or Medicare Supplemental Insurance (weighted risk difference per 1,000 users, –0.45; 95% CI, –1.53 to 0.58) plans.
Each antacid class also conferred a similar estimated risk of MI at 36 months, with weighted risk differences of 0.44 (95% CI, –0.90 to 1.63) per 1,000 commercial plan enrollees and –0.33 (95% CI, –4.40 to 3.46) per 1,000 Medicare Supplemental Insurance plan enrollees, the researchers reported. Weighted estimated risk ratios also were similar between drug classes, ranging from 0.87 (95% CI, 0.76 to 0.99) at 3 months among Medicare Supplemental Insurance enrollees to 1.08 (95% CI, 0.87 to 1.35) at 36 months among commercial insurance plan members.
“Previous studies have examined the risk of MI in PPI users and compared directly to nonusers, which may have resulted in stronger confounding by indication and other risk factors, such as BMI [body mass index] and baseline cardiovascular disease,” the investigators wrote. “Physicians and patients should not avoid starting a PPI because of concerns related to MI risk.”
The researchers received no grant support for this study. Ms. Landi disclosed a student fellowship from UCB Biosciences.
SOURCE: Source: Landi SN et al. Gastroenterology. 2017 Nov 6. doi: 10.1053/j.gastro.2017.10.042.
in a large retrospective insurance claims study.
SOURCE: AMERICAN GASTROENTEROLOGICAL ASSOCIATION
Over a median follow-up of 2-3 months, estimated weighted risks of first-ever MI were low and similar regardless of whether patients started PPIs or histamine2 receptor antagonists (H2RAs), reported Suzanne N. Landi of the University of North Carolina at Chapel Hill, and her associates. “Contrary to prior literature, our analyses do not indicate increased risk of MI in PPI initiators compared to histamine2-receptor antagonist initiators,” they wrote in the March issue of Gastroenterology.
Epidemiologic studies have produced mixed findings on PPI use and MI risk. Animal models and ex vivo studies of human tissue indicate that PPIs might harm coronary vessels by increasing plasma levels of asymmetrical dimethylarginine, which counteracts the vasoprotective activity of endothelial nitrous oxide synthase, the investigators noted. To further assess PPIs and risk of MI while minimizing potential confounding, they studied new users of either prescription PPIs or an active comparator, prescription H2RAs. The dataset included administrative claims for more than 5 million patients with no MI history who were enrolled in commercial insurance plans or Medicare Supplemental Insurance plans. The study data spanned from 2001 to 2014, and patients were followed from their initial antacid prescription until they either developed a first-ever MI, stopped their medication, or left their insurance plan. Median follow-up times were 60 days in patients with commercial insurance and 96 days in patients with Medicare Supplemental Insurance, which employers provide for individuals who are at least 65 years old.
After controlling for numerous measurable clinical and demographic confounders, the estimated 12-month risk of MI was about 2 cases per 1,000 commercially insured patients and about 8 cases per 1,000 Medicare Supplemental Insurance enrollees. The estimated 12-month risk of MI did not significantly differ between users of PPIs and H2RAs, regardless of whether they were enrolled in commercial insurance plans (weighted risk difference per 1,000 users, –0.08; 95% confidence interval, –0.51 to 0.36) or Medicare Supplemental Insurance (weighted risk difference per 1,000 users, –0.45; 95% CI, –1.53 to 0.58) plans.
Each antacid class also conferred a similar estimated risk of MI at 36 months, with weighted risk differences of 0.44 (95% CI, –0.90 to 1.63) per 1,000 commercial plan enrollees and –0.33 (95% CI, –4.40 to 3.46) per 1,000 Medicare Supplemental Insurance plan enrollees, the researchers reported. Weighted estimated risk ratios also were similar between drug classes, ranging from 0.87 (95% CI, 0.76 to 0.99) at 3 months among Medicare Supplemental Insurance enrollees to 1.08 (95% CI, 0.87 to 1.35) at 36 months among commercial insurance plan members.
“Previous studies have examined the risk of MI in PPI users and compared directly to nonusers, which may have resulted in stronger confounding by indication and other risk factors, such as BMI [body mass index] and baseline cardiovascular disease,” the investigators wrote. “Physicians and patients should not avoid starting a PPI because of concerns related to MI risk.”
The researchers received no grant support for this study. Ms. Landi disclosed a student fellowship from UCB Biosciences.
SOURCE: Source: Landi SN et al. Gastroenterology. 2017 Nov 6. doi: 10.1053/j.gastro.2017.10.042.
FROM GASTROENTEROLOGY
Key clinical point: Starting a PPI did not appear to increase the short-term risk of MI.
Major finding: Over a median follow-up time of 2-3 months, the estimated risk of first-ever MI did not statistically differ between initiators of PPIs and initiators of histamine2-receptor antagonists.
Data source: Analyses of commercial and Medicare Supplemental Insurance claims for more than 5 million patients from 2001-2014.
Disclosures: The researchers received no grant support for this study. Ms. Landi disclosed a student fellowship from UCB Biosciences.
Source: Landi SN et al. Gastroenterology. 2017 Nov 6. doi: 10.1053/j.gastro.2017.10.042.
VIP an unwelcome contributor to eosinophilic esophagitis
Vasoactive intestinal peptide (VIP) appears to play an important role in the pathology of eosinophilic esophagitis (EoE) by recruiting mast cells and eosinophils that contribute to EoE’s hallmark symptoms of dysphagia and esophageal dysmotility, investigators reported in the February issue of Cellular and Molecular Gastroenterology and Hepatology.
Blocking one of three VIP receptors – chemoattractant receptor-homologous molecule expressed on Th2 (CRTH2) – could reduce eosinophil infiltration and mast cell numbers in the esophagus, wrote Alok K. Verma, PhD, a postodoctoral fellow at Tulane University in New Orleans, and his colleagues.
“We suggest that inhibiting the VIP–CRTH2 axis may ameliorate the dysphagia, stricture, and motility dysfunction of chronic EoE,” they wrote in a research letter to Cellular and Molecular Gastroenterology and Hepatology.
Several cytokines and chemokines, notably interleukin-5 and eotaxin-3, have been fingered as suspects in eosinophil infiltration, but whether chemokines other than eotaxin play a role has not been well documented, the investigators noted.
They hypothesized that VIP may be a chemoattractant that draws eosinophils into perineural areas of the muscular mucosa of the esophagus.
To test this idea, they looked at VIP-expression in samples from patients both with and without EoE and found that VIP expression was low among controls (without EoE); they also found that eosinophils were seen to accumulate near VIP-expressing nerve cells in biopsy samples from patients with EoE.
When they performed in vitro studies of VIP binding and immunologic functions, they found that eosinophils primarily express the CRTH2 receptor rather than the vasoactive intestinal peptide receptor 1 (VPAC-1) or VPAC-2.
They also demonstrated that VIP’s effects on eosinophil motility was similar to that of eotaxin and that, when they pretreated eosinophils with a CRTH2 inhibitor, esoinophil motility was hampered.
The investigators next looked at biopsy specimens from patients with EoE and found that eosinophils that express CRTH2 accumulated in the epithelial mucosa.
To see whether (as they and other researchers had suspected) VIP and its interaction with the CRTH2 receptor might play a role in mast cell recruitment, they performed immunofluorescence analyses and confirmed the presence of the CRTH2 receptor on tryptase-positive mast cells in the esophageal mucosa of patients with EoE.
“These findings suggest that, similar to eosinophils, mast cells accumulate via interaction of the CRTH2 receptor with neutrally derived VIP,” they wrote.
Finally, to see whether a reduction in peak eosinophil levels in patients with EoE with a CRTH2 antagonist – as seen in prior studies – could also ameliorate the negative effects of mast cells on esophageal function, they looked at the effects of CRTH2 inhibition in a mouse model of human EoE.
They found that, in the mice treated with a CRTH2 blocker, each segment of the esophagus had significant reductions in both eosinophil infiltration and mast cell numbers (P less than .05 for each).
The work was supported in part by grants from the National Institutes of Health and the Tulane Edward G. Schlieder Educational Foundation. Senior author Anil Mishra, PhD, disclosed serving as a consultant for Axcan Pharma, Aptalis, Elite Biosciences, Calypso Biotech SA, and Enumeral Biomedical. The remaining authors disclosed no conflicts of interest.
SOURCE: Verma AK et al. Cell Mol Gastroenterol Hepatol. 2018;5[1]:99-100.e7.
The rapid increase in the incidence of pediatric and adult eosinophilic esophagitis (EoE) draws immediate attention to the importance of studying the mechanisms underlying this detrimental condition. The lack of preventive or curative therapies for EoE further underscores the importance of research that addresses gaps in our understanding of how eosinophilic inflammation of the esophagus is regulated on the molecular and cellular level. EoE is classified as an allergic immune disorder of the gastrointestinal tract and is characterized by eosinophil-rich, chronic Th2-type inflammation of the esophagus.
In this recent publication, the laboratory of Anil Mishra, PhD, showed that vasoactive intestinal peptide (VIP) serves as a potent chemoattractant for eosinophils and promotes accumulation of these innate immune cells adjacent to nerve cells in the muscular mucosa. Increased VIP expression was documented in EoE patients when compared to controls, and the authors identified the chemoattractant receptor homologous molecule expressed on Th2 lymphocytes (CRTH2) as a main binding receptor for VIP. Interestingly, CRTH2 was not only found to be expressed on eosinophils but also on tissue mast cells – another innate immune cell type that significantly contributes to the inflammatory tissue infiltrate in EoE patients. Based on the human findings, the authors tested whether VIP plays a major role in recruiting eosinophils and mast cells to the inflamed esophagus and whether CRTH2 blockade can modulate experimental EoE. Indeed, EoE pathology improved in animals that were treated with a CRTH2 antagonist.
In conclusion, these observations suggest that inhibiting the VIP-CRTH2 axis may serve as a therapeutic intervention pathway to ameliorate innate tissue inflammation in EoE patients.
Edda Fiebiger, PhD, is in the department of pediatrics in the division of gastroenterology, hepatology and nutrition at Boston Children’s Hospital, as well as in the department of medicine at Harvard Medical School, also in Boston. She had no disclosures.
The rapid increase in the incidence of pediatric and adult eosinophilic esophagitis (EoE) draws immediate attention to the importance of studying the mechanisms underlying this detrimental condition. The lack of preventive or curative therapies for EoE further underscores the importance of research that addresses gaps in our understanding of how eosinophilic inflammation of the esophagus is regulated on the molecular and cellular level. EoE is classified as an allergic immune disorder of the gastrointestinal tract and is characterized by eosinophil-rich, chronic Th2-type inflammation of the esophagus.
In this recent publication, the laboratory of Anil Mishra, PhD, showed that vasoactive intestinal peptide (VIP) serves as a potent chemoattractant for eosinophils and promotes accumulation of these innate immune cells adjacent to nerve cells in the muscular mucosa. Increased VIP expression was documented in EoE patients when compared to controls, and the authors identified the chemoattractant receptor homologous molecule expressed on Th2 lymphocytes (CRTH2) as a main binding receptor for VIP. Interestingly, CRTH2 was not only found to be expressed on eosinophils but also on tissue mast cells – another innate immune cell type that significantly contributes to the inflammatory tissue infiltrate in EoE patients. Based on the human findings, the authors tested whether VIP plays a major role in recruiting eosinophils and mast cells to the inflamed esophagus and whether CRTH2 blockade can modulate experimental EoE. Indeed, EoE pathology improved in animals that were treated with a CRTH2 antagonist.
In conclusion, these observations suggest that inhibiting the VIP-CRTH2 axis may serve as a therapeutic intervention pathway to ameliorate innate tissue inflammation in EoE patients.
Edda Fiebiger, PhD, is in the department of pediatrics in the division of gastroenterology, hepatology and nutrition at Boston Children’s Hospital, as well as in the department of medicine at Harvard Medical School, also in Boston. She had no disclosures.
The rapid increase in the incidence of pediatric and adult eosinophilic esophagitis (EoE) draws immediate attention to the importance of studying the mechanisms underlying this detrimental condition. The lack of preventive or curative therapies for EoE further underscores the importance of research that addresses gaps in our understanding of how eosinophilic inflammation of the esophagus is regulated on the molecular and cellular level. EoE is classified as an allergic immune disorder of the gastrointestinal tract and is characterized by eosinophil-rich, chronic Th2-type inflammation of the esophagus.
In this recent publication, the laboratory of Anil Mishra, PhD, showed that vasoactive intestinal peptide (VIP) serves as a potent chemoattractant for eosinophils and promotes accumulation of these innate immune cells adjacent to nerve cells in the muscular mucosa. Increased VIP expression was documented in EoE patients when compared to controls, and the authors identified the chemoattractant receptor homologous molecule expressed on Th2 lymphocytes (CRTH2) as a main binding receptor for VIP. Interestingly, CRTH2 was not only found to be expressed on eosinophils but also on tissue mast cells – another innate immune cell type that significantly contributes to the inflammatory tissue infiltrate in EoE patients. Based on the human findings, the authors tested whether VIP plays a major role in recruiting eosinophils and mast cells to the inflamed esophagus and whether CRTH2 blockade can modulate experimental EoE. Indeed, EoE pathology improved in animals that were treated with a CRTH2 antagonist.
In conclusion, these observations suggest that inhibiting the VIP-CRTH2 axis may serve as a therapeutic intervention pathway to ameliorate innate tissue inflammation in EoE patients.
Edda Fiebiger, PhD, is in the department of pediatrics in the division of gastroenterology, hepatology and nutrition at Boston Children’s Hospital, as well as in the department of medicine at Harvard Medical School, also in Boston. She had no disclosures.
Vasoactive intestinal peptide (VIP) appears to play an important role in the pathology of eosinophilic esophagitis (EoE) by recruiting mast cells and eosinophils that contribute to EoE’s hallmark symptoms of dysphagia and esophageal dysmotility, investigators reported in the February issue of Cellular and Molecular Gastroenterology and Hepatology.
Blocking one of three VIP receptors – chemoattractant receptor-homologous molecule expressed on Th2 (CRTH2) – could reduce eosinophil infiltration and mast cell numbers in the esophagus, wrote Alok K. Verma, PhD, a postodoctoral fellow at Tulane University in New Orleans, and his colleagues.
“We suggest that inhibiting the VIP–CRTH2 axis may ameliorate the dysphagia, stricture, and motility dysfunction of chronic EoE,” they wrote in a research letter to Cellular and Molecular Gastroenterology and Hepatology.
Several cytokines and chemokines, notably interleukin-5 and eotaxin-3, have been fingered as suspects in eosinophil infiltration, but whether chemokines other than eotaxin play a role has not been well documented, the investigators noted.
They hypothesized that VIP may be a chemoattractant that draws eosinophils into perineural areas of the muscular mucosa of the esophagus.
To test this idea, they looked at VIP-expression in samples from patients both with and without EoE and found that VIP expression was low among controls (without EoE); they also found that eosinophils were seen to accumulate near VIP-expressing nerve cells in biopsy samples from patients with EoE.
When they performed in vitro studies of VIP binding and immunologic functions, they found that eosinophils primarily express the CRTH2 receptor rather than the vasoactive intestinal peptide receptor 1 (VPAC-1) or VPAC-2.
They also demonstrated that VIP’s effects on eosinophil motility was similar to that of eotaxin and that, when they pretreated eosinophils with a CRTH2 inhibitor, esoinophil motility was hampered.
The investigators next looked at biopsy specimens from patients with EoE and found that eosinophils that express CRTH2 accumulated in the epithelial mucosa.
To see whether (as they and other researchers had suspected) VIP and its interaction with the CRTH2 receptor might play a role in mast cell recruitment, they performed immunofluorescence analyses and confirmed the presence of the CRTH2 receptor on tryptase-positive mast cells in the esophageal mucosa of patients with EoE.
“These findings suggest that, similar to eosinophils, mast cells accumulate via interaction of the CRTH2 receptor with neutrally derived VIP,” they wrote.
Finally, to see whether a reduction in peak eosinophil levels in patients with EoE with a CRTH2 antagonist – as seen in prior studies – could also ameliorate the negative effects of mast cells on esophageal function, they looked at the effects of CRTH2 inhibition in a mouse model of human EoE.
They found that, in the mice treated with a CRTH2 blocker, each segment of the esophagus had significant reductions in both eosinophil infiltration and mast cell numbers (P less than .05 for each).
The work was supported in part by grants from the National Institutes of Health and the Tulane Edward G. Schlieder Educational Foundation. Senior author Anil Mishra, PhD, disclosed serving as a consultant for Axcan Pharma, Aptalis, Elite Biosciences, Calypso Biotech SA, and Enumeral Biomedical. The remaining authors disclosed no conflicts of interest.
SOURCE: Verma AK et al. Cell Mol Gastroenterol Hepatol. 2018;5[1]:99-100.e7.
Vasoactive intestinal peptide (VIP) appears to play an important role in the pathology of eosinophilic esophagitis (EoE) by recruiting mast cells and eosinophils that contribute to EoE’s hallmark symptoms of dysphagia and esophageal dysmotility, investigators reported in the February issue of Cellular and Molecular Gastroenterology and Hepatology.
Blocking one of three VIP receptors – chemoattractant receptor-homologous molecule expressed on Th2 (CRTH2) – could reduce eosinophil infiltration and mast cell numbers in the esophagus, wrote Alok K. Verma, PhD, a postodoctoral fellow at Tulane University in New Orleans, and his colleagues.
“We suggest that inhibiting the VIP–CRTH2 axis may ameliorate the dysphagia, stricture, and motility dysfunction of chronic EoE,” they wrote in a research letter to Cellular and Molecular Gastroenterology and Hepatology.
Several cytokines and chemokines, notably interleukin-5 and eotaxin-3, have been fingered as suspects in eosinophil infiltration, but whether chemokines other than eotaxin play a role has not been well documented, the investigators noted.
They hypothesized that VIP may be a chemoattractant that draws eosinophils into perineural areas of the muscular mucosa of the esophagus.
To test this idea, they looked at VIP-expression in samples from patients both with and without EoE and found that VIP expression was low among controls (without EoE); they also found that eosinophils were seen to accumulate near VIP-expressing nerve cells in biopsy samples from patients with EoE.
When they performed in vitro studies of VIP binding and immunologic functions, they found that eosinophils primarily express the CRTH2 receptor rather than the vasoactive intestinal peptide receptor 1 (VPAC-1) or VPAC-2.
They also demonstrated that VIP’s effects on eosinophil motility was similar to that of eotaxin and that, when they pretreated eosinophils with a CRTH2 inhibitor, esoinophil motility was hampered.
The investigators next looked at biopsy specimens from patients with EoE and found that eosinophils that express CRTH2 accumulated in the epithelial mucosa.
To see whether (as they and other researchers had suspected) VIP and its interaction with the CRTH2 receptor might play a role in mast cell recruitment, they performed immunofluorescence analyses and confirmed the presence of the CRTH2 receptor on tryptase-positive mast cells in the esophageal mucosa of patients with EoE.
“These findings suggest that, similar to eosinophils, mast cells accumulate via interaction of the CRTH2 receptor with neutrally derived VIP,” they wrote.
Finally, to see whether a reduction in peak eosinophil levels in patients with EoE with a CRTH2 antagonist – as seen in prior studies – could also ameliorate the negative effects of mast cells on esophageal function, they looked at the effects of CRTH2 inhibition in a mouse model of human EoE.
They found that, in the mice treated with a CRTH2 blocker, each segment of the esophagus had significant reductions in both eosinophil infiltration and mast cell numbers (P less than .05 for each).
The work was supported in part by grants from the National Institutes of Health and the Tulane Edward G. Schlieder Educational Foundation. Senior author Anil Mishra, PhD, disclosed serving as a consultant for Axcan Pharma, Aptalis, Elite Biosciences, Calypso Biotech SA, and Enumeral Biomedical. The remaining authors disclosed no conflicts of interest.
SOURCE: Verma AK et al. Cell Mol Gastroenterol Hepatol. 2018;5[1]:99-100.e7.
FROM CELLULAR AND MOLECULAR GASTROENTEROLOGY AND HEPATOLOGY
Key clinical point: VIP appears to play an important role in the pathogenesis of eosinophilic esophagitis (EoE).
Major finding: Neurally derived VIP and its interaction with the CRTH2 receptor appear to recruit eosinophils and mast cells into the esophageal mucosa.
Data source: In vitro studies of human EoE biopsy samples and in vivo studies in mouse models of EoE.
Disclosures: The work was supported in part by grants from the National Institutes of Health and the Tulane Edward G. Schlieder Educational Foundation. Senior author Anil Mishra, PhD, disclosed serving as a consultant for Axcan Pharma, Aptalis, Elite Biosciences, Calypso Biotech SA, and Enumeral Biomedical. The remaining authors disclosed no conflicts of interest.
Source: Verma AK et al. Cell Mol Gastroenterol Hepatol. 2018;5[1]:99-100.e7.
Hiatal hernia repair more common at time of sleeve gastrectomy, compared with RYGB
SAN DIEGO – Concomitant hiatal hernia repair is significantly more common at the time of laparoscopic sleeve gastrectomy, compared with laparoscopic Roux-en-Y gastric bypass, according to a retrospective analysis.
“GERD [gastroesophageal reflux disease] is common in patients with a high body mass index,” lead study author Dino Spaniolas, MD, said at the annual clinical congress of the American College of Surgeons. “In fact, 35%-40% of patients who undergo bariatric surgery are diagnosed with a hiatal hernia, and the majority of them are diagnosed during surgery.”
In an effort to assess the differences in practice patterns in the performance of hiatal hernia repair during laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB), the researchers evaluated the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program public use files from 2015. They limited the analysis to LSG and LRYGB and also excluded revision procedures and patients with a history of foregut surgery.
In all, 130,686 patients were included in the study. Their mean age was 45 years, 79% were female, 75% were Caucasian, and their mean body mass index was 45.7 kg/m2. Most (70%) underwent LSG, while the remainder underwent LRYGB.
At baseline, a greater proportion of the LRYGB patients had a history of GERD than did LSG patients (37.2% vs. 28.6%, respectively; P less than .0001). They were also more likely to have hypertension (54.1% vs. 47.9%; P less than .0001), hyperlipidemia (29.9% vs. 23.2%; P less than .0001), and diabetes (35.5% vs. 23.3%; P less than .0001). Overall, about 15% of patients had a concomitant hiatal hernia repair in addition to their bariatric surgery.
Next, the investigators found what Dr. Spaniolas termed “the GERD paradox”: Although the LRYGB patients were more likely to have GERD before surgery, they were much less likely to undergo a hiatal hernia repair in addition to their bariatric procedure. Specifically, concomitant hiatal hernia repair was performed in 21% of LSG patients, compared with only 10.8% of LRYGB patients (P less than .0001). After investigators controlled for baseline BMI, preoperative GERD, and other patient characteristics, they found that LSG patients were 2.14 times more likely to undergo concomitant hiatal hernia repair, compared with LRYGB patients.
“This is a retrospective review, but nevertheless, I think we can conclude that these findings suggest that concomitant hiatal hernia repair is significantly more common after LSG, compared with LRYGB, despite having less GERD preoperatively,” Dr. Spaniolas said. “This suggests that there is a nationwide difference in the intraoperative management of hiatal hernia based on the type of planned bariatric procedure. This practice pattern needs to be considered while retrospectively assessing GERD-related outcomes of bariatric surgery in the future.”
Dr. Spaniolas disclosed that he has received research support from Merck and that he is a consultant for Mallinckrodt.
SAN DIEGO – Concomitant hiatal hernia repair is significantly more common at the time of laparoscopic sleeve gastrectomy, compared with laparoscopic Roux-en-Y gastric bypass, according to a retrospective analysis.
“GERD [gastroesophageal reflux disease] is common in patients with a high body mass index,” lead study author Dino Spaniolas, MD, said at the annual clinical congress of the American College of Surgeons. “In fact, 35%-40% of patients who undergo bariatric surgery are diagnosed with a hiatal hernia, and the majority of them are diagnosed during surgery.”
In an effort to assess the differences in practice patterns in the performance of hiatal hernia repair during laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB), the researchers evaluated the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program public use files from 2015. They limited the analysis to LSG and LRYGB and also excluded revision procedures and patients with a history of foregut surgery.
In all, 130,686 patients were included in the study. Their mean age was 45 years, 79% were female, 75% were Caucasian, and their mean body mass index was 45.7 kg/m2. Most (70%) underwent LSG, while the remainder underwent LRYGB.
At baseline, a greater proportion of the LRYGB patients had a history of GERD than did LSG patients (37.2% vs. 28.6%, respectively; P less than .0001). They were also more likely to have hypertension (54.1% vs. 47.9%; P less than .0001), hyperlipidemia (29.9% vs. 23.2%; P less than .0001), and diabetes (35.5% vs. 23.3%; P less than .0001). Overall, about 15% of patients had a concomitant hiatal hernia repair in addition to their bariatric surgery.
Next, the investigators found what Dr. Spaniolas termed “the GERD paradox”: Although the LRYGB patients were more likely to have GERD before surgery, they were much less likely to undergo a hiatal hernia repair in addition to their bariatric procedure. Specifically, concomitant hiatal hernia repair was performed in 21% of LSG patients, compared with only 10.8% of LRYGB patients (P less than .0001). After investigators controlled for baseline BMI, preoperative GERD, and other patient characteristics, they found that LSG patients were 2.14 times more likely to undergo concomitant hiatal hernia repair, compared with LRYGB patients.
“This is a retrospective review, but nevertheless, I think we can conclude that these findings suggest that concomitant hiatal hernia repair is significantly more common after LSG, compared with LRYGB, despite having less GERD preoperatively,” Dr. Spaniolas said. “This suggests that there is a nationwide difference in the intraoperative management of hiatal hernia based on the type of planned bariatric procedure. This practice pattern needs to be considered while retrospectively assessing GERD-related outcomes of bariatric surgery in the future.”
Dr. Spaniolas disclosed that he has received research support from Merck and that he is a consultant for Mallinckrodt.
SAN DIEGO – Concomitant hiatal hernia repair is significantly more common at the time of laparoscopic sleeve gastrectomy, compared with laparoscopic Roux-en-Y gastric bypass, according to a retrospective analysis.
“GERD [gastroesophageal reflux disease] is common in patients with a high body mass index,” lead study author Dino Spaniolas, MD, said at the annual clinical congress of the American College of Surgeons. “In fact, 35%-40% of patients who undergo bariatric surgery are diagnosed with a hiatal hernia, and the majority of them are diagnosed during surgery.”
In an effort to assess the differences in practice patterns in the performance of hiatal hernia repair during laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB), the researchers evaluated the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program public use files from 2015. They limited the analysis to LSG and LRYGB and also excluded revision procedures and patients with a history of foregut surgery.
In all, 130,686 patients were included in the study. Their mean age was 45 years, 79% were female, 75% were Caucasian, and their mean body mass index was 45.7 kg/m2. Most (70%) underwent LSG, while the remainder underwent LRYGB.
At baseline, a greater proportion of the LRYGB patients had a history of GERD than did LSG patients (37.2% vs. 28.6%, respectively; P less than .0001). They were also more likely to have hypertension (54.1% vs. 47.9%; P less than .0001), hyperlipidemia (29.9% vs. 23.2%; P less than .0001), and diabetes (35.5% vs. 23.3%; P less than .0001). Overall, about 15% of patients had a concomitant hiatal hernia repair in addition to their bariatric surgery.
Next, the investigators found what Dr. Spaniolas termed “the GERD paradox”: Although the LRYGB patients were more likely to have GERD before surgery, they were much less likely to undergo a hiatal hernia repair in addition to their bariatric procedure. Specifically, concomitant hiatal hernia repair was performed in 21% of LSG patients, compared with only 10.8% of LRYGB patients (P less than .0001). After investigators controlled for baseline BMI, preoperative GERD, and other patient characteristics, they found that LSG patients were 2.14 times more likely to undergo concomitant hiatal hernia repair, compared with LRYGB patients.
“This is a retrospective review, but nevertheless, I think we can conclude that these findings suggest that concomitant hiatal hernia repair is significantly more common after LSG, compared with LRYGB, despite having less GERD preoperatively,” Dr. Spaniolas said. “This suggests that there is a nationwide difference in the intraoperative management of hiatal hernia based on the type of planned bariatric procedure. This practice pattern needs to be considered while retrospectively assessing GERD-related outcomes of bariatric surgery in the future.”
Dr. Spaniolas disclosed that he has received research support from Merck and that he is a consultant for Mallinckrodt.
AT THE ACS CLINICAL CONGRESS
Key clinical point: LSG patients are more likely to undergo concomitant hiatal hernia repair, compared with LRYGB patients.
Major finding: According to multivariate analysis, LSG patients were more likely to undergo concomitant HH repair (odds ratio, 2.14).
Study details: A retrospective analysis of 130,686 patients who underwent bariatric surgery in 2015.
Disclosures: Dr. Spaniolas disclosed that he has received research support from Merck and that he is a consultant for Mallinckrodt.
AGA Clinical Practice Update: Best practices for POEM in achalasia
Peroral endoscopic myotomy, or POEM, should be considered as primary therapy for type III achalasia and as a treatment option comparable with laparoscopic Heller myotomy for any of the achalasia syndromes – but only when physicians with expertise are available, according to a clinical practice update from the American Gastroenterological Association.
Further, post-POEM patients should be considered at high risk of developing reflux esophagitis and should be advised of the management considerations, including potential indefinite proton pump inhibitor therapy and/or surveillance endoscopy, prior to undergoing the procedure, Peter J. Kahrilas, MD, of Northwestern University, Chicago, and his colleagues wrote in the update, which is published in the November issue of Gastroenterology (2017. doi: 10.1053/j.gastro.2017.10.001).
In an effort to describe the place for POEM among the currently available robust treatments for achalasia, the authors conducted a literature review – their “best practice” recommendations are based on the findings from relevant publications and on expert opinion.
Additionally, they said POEM should be performed by experienced physicians in high-volume centers since the procedure is complex and an estimated 20-30 procedures are needed to achieve competence.
The update and these proposed best practices follow the evolution of POEM over the last decade: it began as an exciting concept and is now a mainstream treatment option for achalasia, the authors said.
“Uncontrolled outcome data have been very promising comparing POEM with the standard surgical treatment for achalasia, laparoscopic Heller myotomy (LHM). However, concerns remain regarding post-POEM reflux, the durability of the procedure, and the learning curve for endoscopists adopting the technique,” they wrote, which, when coupled with recent randomized controlled study data showing excellent and equivalent 5-year outcomes with pneumatic dilation and LHM, make the role of POEM somewhat controversial.
As part of the review, they considered the strengths and weaknesses of both POEM and LHM. The data comparing POEM with LHM or pneumatic dilation remain very limited, but based on those that do exist, the authors concluded that “POEM appears to be a safe, effective, and minimally invasive management option in achalasia in the short term.”
Long-term durability data are not yet available, they noted.
Dr. Kahrilas received funding from the U.S. Public Health Service.
Peroral endoscopic myotomy, or POEM, should be considered as primary therapy for type III achalasia and as a treatment option comparable with laparoscopic Heller myotomy for any of the achalasia syndromes – but only when physicians with expertise are available, according to a clinical practice update from the American Gastroenterological Association.
Further, post-POEM patients should be considered at high risk of developing reflux esophagitis and should be advised of the management considerations, including potential indefinite proton pump inhibitor therapy and/or surveillance endoscopy, prior to undergoing the procedure, Peter J. Kahrilas, MD, of Northwestern University, Chicago, and his colleagues wrote in the update, which is published in the November issue of Gastroenterology (2017. doi: 10.1053/j.gastro.2017.10.001).
In an effort to describe the place for POEM among the currently available robust treatments for achalasia, the authors conducted a literature review – their “best practice” recommendations are based on the findings from relevant publications and on expert opinion.
Additionally, they said POEM should be performed by experienced physicians in high-volume centers since the procedure is complex and an estimated 20-30 procedures are needed to achieve competence.
The update and these proposed best practices follow the evolution of POEM over the last decade: it began as an exciting concept and is now a mainstream treatment option for achalasia, the authors said.
“Uncontrolled outcome data have been very promising comparing POEM with the standard surgical treatment for achalasia, laparoscopic Heller myotomy (LHM). However, concerns remain regarding post-POEM reflux, the durability of the procedure, and the learning curve for endoscopists adopting the technique,” they wrote, which, when coupled with recent randomized controlled study data showing excellent and equivalent 5-year outcomes with pneumatic dilation and LHM, make the role of POEM somewhat controversial.
As part of the review, they considered the strengths and weaknesses of both POEM and LHM. The data comparing POEM with LHM or pneumatic dilation remain very limited, but based on those that do exist, the authors concluded that “POEM appears to be a safe, effective, and minimally invasive management option in achalasia in the short term.”
Long-term durability data are not yet available, they noted.
Dr. Kahrilas received funding from the U.S. Public Health Service.
Peroral endoscopic myotomy, or POEM, should be considered as primary therapy for type III achalasia and as a treatment option comparable with laparoscopic Heller myotomy for any of the achalasia syndromes – but only when physicians with expertise are available, according to a clinical practice update from the American Gastroenterological Association.
Further, post-POEM patients should be considered at high risk of developing reflux esophagitis and should be advised of the management considerations, including potential indefinite proton pump inhibitor therapy and/or surveillance endoscopy, prior to undergoing the procedure, Peter J. Kahrilas, MD, of Northwestern University, Chicago, and his colleagues wrote in the update, which is published in the November issue of Gastroenterology (2017. doi: 10.1053/j.gastro.2017.10.001).
In an effort to describe the place for POEM among the currently available robust treatments for achalasia, the authors conducted a literature review – their “best practice” recommendations are based on the findings from relevant publications and on expert opinion.
Additionally, they said POEM should be performed by experienced physicians in high-volume centers since the procedure is complex and an estimated 20-30 procedures are needed to achieve competence.
The update and these proposed best practices follow the evolution of POEM over the last decade: it began as an exciting concept and is now a mainstream treatment option for achalasia, the authors said.
“Uncontrolled outcome data have been very promising comparing POEM with the standard surgical treatment for achalasia, laparoscopic Heller myotomy (LHM). However, concerns remain regarding post-POEM reflux, the durability of the procedure, and the learning curve for endoscopists adopting the technique,” they wrote, which, when coupled with recent randomized controlled study data showing excellent and equivalent 5-year outcomes with pneumatic dilation and LHM, make the role of POEM somewhat controversial.
As part of the review, they considered the strengths and weaknesses of both POEM and LHM. The data comparing POEM with LHM or pneumatic dilation remain very limited, but based on those that do exist, the authors concluded that “POEM appears to be a safe, effective, and minimally invasive management option in achalasia in the short term.”
Long-term durability data are not yet available, they noted.
Dr. Kahrilas received funding from the U.S. Public Health Service.
FROM GASTROENTEROLOGY
Intubation for upper GI bleeding may increase cardiopulmonary risk
Prophylactic endotracheal intubation (PEI) prior to endoscopy for upper GI bleeding in critically ill adults may actually increase, rather than decrease, the risk of unplanned cardiopulmonary events, according to results of a retrospective cohort study.
In particular, the study showed a significant increase in risk of patients developing pneumonia, according to study author Umar Hayat, MD, Medicine Institute, Cleveland Clinic, and colleagues.
“The practice of PEI could carry significant risks and might be a factor that leads to this dreaded outcome [pneumonia] in patients presenting with upper GI bleeding, instead of preventing it,” Dr. Hayat and colleagues wrote (Gastrointest Endosc. 2017;86:500-9. doi:10.1016/j.gie.2016.12.008).
The role of PEI in mitigating risk of cardiopulmonary adverse events remains controversial for patients presenting with upper GI bleeding, who can have mortality rates as high as 10% for nonvariceal bleeds and 20% for variceal causes, the investigators said.
Dr. Hayat and colleagues reviewed data for a total of 365 patients who had brisk upper GI bleeding, of whom 144 (39.5%) underwent PEI prior to esophagogastroduodenoscopy (EGD). The average patient age was 59 years, and 64% were male.
The composite primary endpoint of the study, cardiopulmonary unplanned events, was defined as occurrence of pneumonia, pulmonary edema, acute respiratory distress syndrome, shock/hypotension, arrhythmia, myocardial infarction, or cardiac arrest within 48 hours of EGD.
The final analysis included 200 intubated and nonintubated patients matched on a 1:1 basis using propensity score matching.
The researchers found that post-EGD adverse outcomes were more common in patients who had undergone PEI prior to EGD (odds ratio, 3.8; 95% confidence interval, 1.4-10.2), published data show. The rate of unplanned cardiopulmonary events was 20% for intubated patients, compared with 6% for nonintubated patients (P = .008).
Even after adjusting for the presence of esophageal varices, the difference remained significant, Dr. Hayat and colleagues wrote.
Pneumonia in particular was significantly more common in the PEI group: published data show 14% of patients who underwent PEI had pneumonia within 48 hours of EGD, compared with 2% of nonintubated patients (P = .01).
Rates of shock within 48 hours of EGD were also higher in the PEI group (14% vs. 6%), though the finding did not reach statistical significance, the authors added.
Currently, PEI is “variably used” in clinical practice, the authors wrote, and factors that may play into the decision to utilize this strategy include bleeding severity and ongoing hematemesis, among other factors. In survey data cited by Dr. Hayat and associates, 58% of experts said they would consider intubation for patients with ongoing hematemesis, and about one-quarter said they would intubate if they suspected hemodynamic compromise.
Although future prospective, controlled studies are needed to confirm these findings, the authors did advise caution in selecting patients for PEI in critically ill patients presenting with upper GI bleeding.
“The benefits and risks of intubation should be carefully weighed when considering airway protection before an EGD in this group of patients,” they wrote.
The invesigators disclosed no financial relationships relevant to the current study.
Prophylactic endotracheal intubation (PEI) prior to endoscopy for upper GI bleeding in critically ill adults may actually increase, rather than decrease, the risk of unplanned cardiopulmonary events, according to results of a retrospective cohort study.
In particular, the study showed a significant increase in risk of patients developing pneumonia, according to study author Umar Hayat, MD, Medicine Institute, Cleveland Clinic, and colleagues.
“The practice of PEI could carry significant risks and might be a factor that leads to this dreaded outcome [pneumonia] in patients presenting with upper GI bleeding, instead of preventing it,” Dr. Hayat and colleagues wrote (Gastrointest Endosc. 2017;86:500-9. doi:10.1016/j.gie.2016.12.008).
The role of PEI in mitigating risk of cardiopulmonary adverse events remains controversial for patients presenting with upper GI bleeding, who can have mortality rates as high as 10% for nonvariceal bleeds and 20% for variceal causes, the investigators said.
Dr. Hayat and colleagues reviewed data for a total of 365 patients who had brisk upper GI bleeding, of whom 144 (39.5%) underwent PEI prior to esophagogastroduodenoscopy (EGD). The average patient age was 59 years, and 64% were male.
The composite primary endpoint of the study, cardiopulmonary unplanned events, was defined as occurrence of pneumonia, pulmonary edema, acute respiratory distress syndrome, shock/hypotension, arrhythmia, myocardial infarction, or cardiac arrest within 48 hours of EGD.
The final analysis included 200 intubated and nonintubated patients matched on a 1:1 basis using propensity score matching.
The researchers found that post-EGD adverse outcomes were more common in patients who had undergone PEI prior to EGD (odds ratio, 3.8; 95% confidence interval, 1.4-10.2), published data show. The rate of unplanned cardiopulmonary events was 20% for intubated patients, compared with 6% for nonintubated patients (P = .008).
Even after adjusting for the presence of esophageal varices, the difference remained significant, Dr. Hayat and colleagues wrote.
Pneumonia in particular was significantly more common in the PEI group: published data show 14% of patients who underwent PEI had pneumonia within 48 hours of EGD, compared with 2% of nonintubated patients (P = .01).
Rates of shock within 48 hours of EGD were also higher in the PEI group (14% vs. 6%), though the finding did not reach statistical significance, the authors added.
Currently, PEI is “variably used” in clinical practice, the authors wrote, and factors that may play into the decision to utilize this strategy include bleeding severity and ongoing hematemesis, among other factors. In survey data cited by Dr. Hayat and associates, 58% of experts said they would consider intubation for patients with ongoing hematemesis, and about one-quarter said they would intubate if they suspected hemodynamic compromise.
Although future prospective, controlled studies are needed to confirm these findings, the authors did advise caution in selecting patients for PEI in critically ill patients presenting with upper GI bleeding.
“The benefits and risks of intubation should be carefully weighed when considering airway protection before an EGD in this group of patients,” they wrote.
The invesigators disclosed no financial relationships relevant to the current study.
Prophylactic endotracheal intubation (PEI) prior to endoscopy for upper GI bleeding in critically ill adults may actually increase, rather than decrease, the risk of unplanned cardiopulmonary events, according to results of a retrospective cohort study.
In particular, the study showed a significant increase in risk of patients developing pneumonia, according to study author Umar Hayat, MD, Medicine Institute, Cleveland Clinic, and colleagues.
“The practice of PEI could carry significant risks and might be a factor that leads to this dreaded outcome [pneumonia] in patients presenting with upper GI bleeding, instead of preventing it,” Dr. Hayat and colleagues wrote (Gastrointest Endosc. 2017;86:500-9. doi:10.1016/j.gie.2016.12.008).
The role of PEI in mitigating risk of cardiopulmonary adverse events remains controversial for patients presenting with upper GI bleeding, who can have mortality rates as high as 10% for nonvariceal bleeds and 20% for variceal causes, the investigators said.
Dr. Hayat and colleagues reviewed data for a total of 365 patients who had brisk upper GI bleeding, of whom 144 (39.5%) underwent PEI prior to esophagogastroduodenoscopy (EGD). The average patient age was 59 years, and 64% were male.
The composite primary endpoint of the study, cardiopulmonary unplanned events, was defined as occurrence of pneumonia, pulmonary edema, acute respiratory distress syndrome, shock/hypotension, arrhythmia, myocardial infarction, or cardiac arrest within 48 hours of EGD.
The final analysis included 200 intubated and nonintubated patients matched on a 1:1 basis using propensity score matching.
The researchers found that post-EGD adverse outcomes were more common in patients who had undergone PEI prior to EGD (odds ratio, 3.8; 95% confidence interval, 1.4-10.2), published data show. The rate of unplanned cardiopulmonary events was 20% for intubated patients, compared with 6% for nonintubated patients (P = .008).
Even after adjusting for the presence of esophageal varices, the difference remained significant, Dr. Hayat and colleagues wrote.
Pneumonia in particular was significantly more common in the PEI group: published data show 14% of patients who underwent PEI had pneumonia within 48 hours of EGD, compared with 2% of nonintubated patients (P = .01).
Rates of shock within 48 hours of EGD were also higher in the PEI group (14% vs. 6%), though the finding did not reach statistical significance, the authors added.
Currently, PEI is “variably used” in clinical practice, the authors wrote, and factors that may play into the decision to utilize this strategy include bleeding severity and ongoing hematemesis, among other factors. In survey data cited by Dr. Hayat and associates, 58% of experts said they would consider intubation for patients with ongoing hematemesis, and about one-quarter said they would intubate if they suspected hemodynamic compromise.
Although future prospective, controlled studies are needed to confirm these findings, the authors did advise caution in selecting patients for PEI in critically ill patients presenting with upper GI bleeding.
“The benefits and risks of intubation should be carefully weighed when considering airway protection before an EGD in this group of patients,” they wrote.
The invesigators disclosed no financial relationships relevant to the current study.
FROM GASTROINTESTINAL ENDOSCOPY
Key clinical point: Although many advocate prophylactic endotracheal intubation in critically ill patients presenting with brisk upper GI bleeding, doing so may actually increase, rather than decrease, risk of cardiopulmonary events.
Major finding: The rate of unplanned cardiopulmonary events was 20% for intubated patients, compared with 6% for nonintubated patients (P = .008), with the difference remaining significant even after adjusting for the presence of esophageal varices.
Data source: Retrospective cohort study including data on 365 adult patients who presented with brisk upper GI bleeding at a tertiary care center.
Disclosures: The authors disclosed no financial relationships relevant to the current study.
Pilot study: Novel spray powder stops GI bleeding
ORLANDO – TC-325 (Hemospray), a proprietary mineral powder blend developed for endoscopic hemostasis, promoted immediate hemostasis and prevented rebleeding in patients with malignant gastrointestinal bleeding in a randomized pilot trial.
Nine of 10 patients randomized to receive treatment with TC-325 experienced immediate hemostasis, compared with 4 of 10 patients randomized to receive standard of care (usually argon plasma coagulation, sometimes with radiation therapy), Alan Barkun, MD, of McGill University, Montreal reported at the World Congress of Gastroenterology at ACG 2017.
Five of six patients in the standard of care group who did not achieve immediate hemostasis crossed over to TC-325. Hemostasis was then achieved at index endoscopy in 80% of these crossovers, said Dr. Barkun, whose work received the 2017 GI Bleeding Category Award at the congress.
“So a total of 15 patients were treated with Hemospray among both groups, and 100% of them achieved immediate hemostasis,” he said. “We also assessed feasibility of recruitment and randomization, and it was indeed demonstrated in the context of this feasibility trial.”
Secondary measures, including the use of additional hemostatic approaches, blood transfusions, length of stay, and mortality, among others, did not differ between the two groups.
“This pilot trial is the first to assess TC-325 in patients with malignant bleeding, allowing us to plan for adequate powering and demonstrating feasibility for a larger multicenter, randomized, controlled trial,” he said. “Although this trial was not powered to seek statistically significant differences, the observed results suggest that TC-325 may indeed be a promising hemostatic modality in managing patients with malignant bleeding in achieving both immediate hemostasis and in our minds, surprisingly, perhaps delayed rebleeding.”
Hemospray, which is approved in Canada for upper/lower gastrointestinal bleeding of any etiology, as well as in Mexico and in some countries in Europe, Asia, and South America, works by forming a mechanical barrier over the bleeding site. The powder absorbs water, then acts both cohesively and adhesively to form that barrier, according to information from Cook Medical, which developed the product. It is not currently approved for this indication in the United States.
“An adequately powered randomized, controlled trial is now needed to better determine any beneficial downstream effect on subsequent rebleeding and health care resource use when compared to existing standard of care,” he concluded.
Dr. Barkun is an advisory committee/board member and consultant for Cook Medical and has received grant/research support from the company.
ORLANDO – TC-325 (Hemospray), a proprietary mineral powder blend developed for endoscopic hemostasis, promoted immediate hemostasis and prevented rebleeding in patients with malignant gastrointestinal bleeding in a randomized pilot trial.
Nine of 10 patients randomized to receive treatment with TC-325 experienced immediate hemostasis, compared with 4 of 10 patients randomized to receive standard of care (usually argon plasma coagulation, sometimes with radiation therapy), Alan Barkun, MD, of McGill University, Montreal reported at the World Congress of Gastroenterology at ACG 2017.
Five of six patients in the standard of care group who did not achieve immediate hemostasis crossed over to TC-325. Hemostasis was then achieved at index endoscopy in 80% of these crossovers, said Dr. Barkun, whose work received the 2017 GI Bleeding Category Award at the congress.
“So a total of 15 patients were treated with Hemospray among both groups, and 100% of them achieved immediate hemostasis,” he said. “We also assessed feasibility of recruitment and randomization, and it was indeed demonstrated in the context of this feasibility trial.”
Secondary measures, including the use of additional hemostatic approaches, blood transfusions, length of stay, and mortality, among others, did not differ between the two groups.
“This pilot trial is the first to assess TC-325 in patients with malignant bleeding, allowing us to plan for adequate powering and demonstrating feasibility for a larger multicenter, randomized, controlled trial,” he said. “Although this trial was not powered to seek statistically significant differences, the observed results suggest that TC-325 may indeed be a promising hemostatic modality in managing patients with malignant bleeding in achieving both immediate hemostasis and in our minds, surprisingly, perhaps delayed rebleeding.”
Hemospray, which is approved in Canada for upper/lower gastrointestinal bleeding of any etiology, as well as in Mexico and in some countries in Europe, Asia, and South America, works by forming a mechanical barrier over the bleeding site. The powder absorbs water, then acts both cohesively and adhesively to form that barrier, according to information from Cook Medical, which developed the product. It is not currently approved for this indication in the United States.
“An adequately powered randomized, controlled trial is now needed to better determine any beneficial downstream effect on subsequent rebleeding and health care resource use when compared to existing standard of care,” he concluded.
Dr. Barkun is an advisory committee/board member and consultant for Cook Medical and has received grant/research support from the company.
ORLANDO – TC-325 (Hemospray), a proprietary mineral powder blend developed for endoscopic hemostasis, promoted immediate hemostasis and prevented rebleeding in patients with malignant gastrointestinal bleeding in a randomized pilot trial.
Nine of 10 patients randomized to receive treatment with TC-325 experienced immediate hemostasis, compared with 4 of 10 patients randomized to receive standard of care (usually argon plasma coagulation, sometimes with radiation therapy), Alan Barkun, MD, of McGill University, Montreal reported at the World Congress of Gastroenterology at ACG 2017.
Five of six patients in the standard of care group who did not achieve immediate hemostasis crossed over to TC-325. Hemostasis was then achieved at index endoscopy in 80% of these crossovers, said Dr. Barkun, whose work received the 2017 GI Bleeding Category Award at the congress.
“So a total of 15 patients were treated with Hemospray among both groups, and 100% of them achieved immediate hemostasis,” he said. “We also assessed feasibility of recruitment and randomization, and it was indeed demonstrated in the context of this feasibility trial.”
Secondary measures, including the use of additional hemostatic approaches, blood transfusions, length of stay, and mortality, among others, did not differ between the two groups.
“This pilot trial is the first to assess TC-325 in patients with malignant bleeding, allowing us to plan for adequate powering and demonstrating feasibility for a larger multicenter, randomized, controlled trial,” he said. “Although this trial was not powered to seek statistically significant differences, the observed results suggest that TC-325 may indeed be a promising hemostatic modality in managing patients with malignant bleeding in achieving both immediate hemostasis and in our minds, surprisingly, perhaps delayed rebleeding.”
Hemospray, which is approved in Canada for upper/lower gastrointestinal bleeding of any etiology, as well as in Mexico and in some countries in Europe, Asia, and South America, works by forming a mechanical barrier over the bleeding site. The powder absorbs water, then acts both cohesively and adhesively to form that barrier, according to information from Cook Medical, which developed the product. It is not currently approved for this indication in the United States.
“An adequately powered randomized, controlled trial is now needed to better determine any beneficial downstream effect on subsequent rebleeding and health care resource use when compared to existing standard of care,” he concluded.
Dr. Barkun is an advisory committee/board member and consultant for Cook Medical and has received grant/research support from the company.
AT THE WORLD CONGRESS OF GASTROENTEROLOGY
Key clinical point:
Major finding: All 15 patients treated with Hemospray achieved immediate hemostasis.
Data source: A randomized pilot study of 20 patients.
Disclosures: Dr. Barkun is an advisory committee/board member and consultant for Cook Medical and has received grant/research support from the company.
GERD postop relapse rates highest in women, older adults
Healthy men younger than 45 years have the lowest risk of relapse after reflux surgery compared with other demographic subgroups, according to data from a population-based study of 2,655 adults in Sweden. The findings were published online in JAMA.
“Cohort studies have shown a high risk of recurrent symptoms of GERD after surgery, which may have contributed to the decline in the use of antireflux surgery,” but long-term reflux recurrence rates and potential risk factors have not been well studied, wrote John Maret-Ouda, MD, and colleagues at the Karolinska Institutet in Stockholm, Sweden.
Overall, 18% of the patients suffered a reflux relapse; 84% of these were prescribed long-term medication, and 16% underwent additional surgery.
The highest relapse rates occurred among women, older patients, and those with comorbid conditions. Reflux occurred in 22% of women vs. 14% of men (hazard ratio 1.57), and the hazard ratio was 1.41 for patients aged 61 years and older compared with those aged 45 years and younger. Patients with one or more comorbidities were approximately one-third more likely to have a recurrence of reflux, compared with those who had no comorbidities (hazard ratio 1.36).
Approximately 4% of patients reported complications; the most common complication was infection (1.1%), followed by bleeding (0.9%), and esophageal perforation (0.9%).
The recurrence rate of 18% is low compared with other studies, the researchers noted. Possible reasons for the difference include the population-based design of the current study, which meant that no patients were lost to follow-up, as well as the recent time period, “in which laparoscopic antireflux surgery has become more centralized to expert centers where selection of patients might be stricter and the quality of surgery might be higher,” they wrote.
The study findings were limited by several factors including clinical variations on coding, lack of data on certain confounding variables including body mass index and smoking, and a lack of control GERD patients who did not undergo antireflux surgery, the researchers said. The results suggest that the benefits of laparoscopic antireflux surgery may be diminished by the potential for recurrent GERD, they added.
The Swedish Research Council funded the study. The researchers had no financial conflicts to disclose.
“The operation can be performed with a relatively low rate of morbidity and a very low mortality rate,” Stuart J. Spechler, MD, wrote in an editorial. “Although findings regarding GERD symptom relief and patient satisfaction based on medication usage data should be interpreted with caution, the observation that more than 80% of patients did not restart antireflux medications after laparoscopic antireflux surgery suggests that the operation provided long-lasting relief of GERD symptoms for most patients,” he said. Although surgery is not a permanent cure for all patients with GERD, “the ever-increasing number of proposed [proton pump inhibitor] risks has caused the greatest concern among clinicians and their patients,” said Dr. Spechler. “Whether the greater than 80% possibility of long-term freedom from PPIs and their associated risks warrants the 4% risk of acute surgical complications and the 17.7% risk of GERD recurrence is a decision that individual patients should make after a detailed discussion of these risks and benefits with their physicians,” he said. However, the study findings suggest “that laparoscopic antireflux surgery might be an especially appealing option for young and otherwise healthy men, who seem to have the lowest rate of GERD recurrence after antireflux surgery and who otherwise would likely require decades of PPI treatment without the operation,” he wrote (JAMA 2017;318:913-5).
Dr. Spechler is affiliated with Baylor University in Dallas. He disclosed serving as a consultant for Ironwood Pharmaceuticals and Takeda Pharmaceuticals, and funding support from the National Institutes of Health.
“The operation can be performed with a relatively low rate of morbidity and a very low mortality rate,” Stuart J. Spechler, MD, wrote in an editorial. “Although findings regarding GERD symptom relief and patient satisfaction based on medication usage data should be interpreted with caution, the observation that more than 80% of patients did not restart antireflux medications after laparoscopic antireflux surgery suggests that the operation provided long-lasting relief of GERD symptoms for most patients,” he said. Although surgery is not a permanent cure for all patients with GERD, “the ever-increasing number of proposed [proton pump inhibitor] risks has caused the greatest concern among clinicians and their patients,” said Dr. Spechler. “Whether the greater than 80% possibility of long-term freedom from PPIs and their associated risks warrants the 4% risk of acute surgical complications and the 17.7% risk of GERD recurrence is a decision that individual patients should make after a detailed discussion of these risks and benefits with their physicians,” he said. However, the study findings suggest “that laparoscopic antireflux surgery might be an especially appealing option for young and otherwise healthy men, who seem to have the lowest rate of GERD recurrence after antireflux surgery and who otherwise would likely require decades of PPI treatment without the operation,” he wrote (JAMA 2017;318:913-5).
Dr. Spechler is affiliated with Baylor University in Dallas. He disclosed serving as a consultant for Ironwood Pharmaceuticals and Takeda Pharmaceuticals, and funding support from the National Institutes of Health.
“The operation can be performed with a relatively low rate of morbidity and a very low mortality rate,” Stuart J. Spechler, MD, wrote in an editorial. “Although findings regarding GERD symptom relief and patient satisfaction based on medication usage data should be interpreted with caution, the observation that more than 80% of patients did not restart antireflux medications after laparoscopic antireflux surgery suggests that the operation provided long-lasting relief of GERD symptoms for most patients,” he said. Although surgery is not a permanent cure for all patients with GERD, “the ever-increasing number of proposed [proton pump inhibitor] risks has caused the greatest concern among clinicians and their patients,” said Dr. Spechler. “Whether the greater than 80% possibility of long-term freedom from PPIs and their associated risks warrants the 4% risk of acute surgical complications and the 17.7% risk of GERD recurrence is a decision that individual patients should make after a detailed discussion of these risks and benefits with their physicians,” he said. However, the study findings suggest “that laparoscopic antireflux surgery might be an especially appealing option for young and otherwise healthy men, who seem to have the lowest rate of GERD recurrence after antireflux surgery and who otherwise would likely require decades of PPI treatment without the operation,” he wrote (JAMA 2017;318:913-5).
Dr. Spechler is affiliated with Baylor University in Dallas. He disclosed serving as a consultant for Ironwood Pharmaceuticals and Takeda Pharmaceuticals, and funding support from the National Institutes of Health.
Healthy men younger than 45 years have the lowest risk of relapse after reflux surgery compared with other demographic subgroups, according to data from a population-based study of 2,655 adults in Sweden. The findings were published online in JAMA.
“Cohort studies have shown a high risk of recurrent symptoms of GERD after surgery, which may have contributed to the decline in the use of antireflux surgery,” but long-term reflux recurrence rates and potential risk factors have not been well studied, wrote John Maret-Ouda, MD, and colleagues at the Karolinska Institutet in Stockholm, Sweden.
Overall, 18% of the patients suffered a reflux relapse; 84% of these were prescribed long-term medication, and 16% underwent additional surgery.
The highest relapse rates occurred among women, older patients, and those with comorbid conditions. Reflux occurred in 22% of women vs. 14% of men (hazard ratio 1.57), and the hazard ratio was 1.41 for patients aged 61 years and older compared with those aged 45 years and younger. Patients with one or more comorbidities were approximately one-third more likely to have a recurrence of reflux, compared with those who had no comorbidities (hazard ratio 1.36).
Approximately 4% of patients reported complications; the most common complication was infection (1.1%), followed by bleeding (0.9%), and esophageal perforation (0.9%).
The recurrence rate of 18% is low compared with other studies, the researchers noted. Possible reasons for the difference include the population-based design of the current study, which meant that no patients were lost to follow-up, as well as the recent time period, “in which laparoscopic antireflux surgery has become more centralized to expert centers where selection of patients might be stricter and the quality of surgery might be higher,” they wrote.
The study findings were limited by several factors including clinical variations on coding, lack of data on certain confounding variables including body mass index and smoking, and a lack of control GERD patients who did not undergo antireflux surgery, the researchers said. The results suggest that the benefits of laparoscopic antireflux surgery may be diminished by the potential for recurrent GERD, they added.
The Swedish Research Council funded the study. The researchers had no financial conflicts to disclose.
Healthy men younger than 45 years have the lowest risk of relapse after reflux surgery compared with other demographic subgroups, according to data from a population-based study of 2,655 adults in Sweden. The findings were published online in JAMA.
“Cohort studies have shown a high risk of recurrent symptoms of GERD after surgery, which may have contributed to the decline in the use of antireflux surgery,” but long-term reflux recurrence rates and potential risk factors have not been well studied, wrote John Maret-Ouda, MD, and colleagues at the Karolinska Institutet in Stockholm, Sweden.
Overall, 18% of the patients suffered a reflux relapse; 84% of these were prescribed long-term medication, and 16% underwent additional surgery.
The highest relapse rates occurred among women, older patients, and those with comorbid conditions. Reflux occurred in 22% of women vs. 14% of men (hazard ratio 1.57), and the hazard ratio was 1.41 for patients aged 61 years and older compared with those aged 45 years and younger. Patients with one or more comorbidities were approximately one-third more likely to have a recurrence of reflux, compared with those who had no comorbidities (hazard ratio 1.36).
Approximately 4% of patients reported complications; the most common complication was infection (1.1%), followed by bleeding (0.9%), and esophageal perforation (0.9%).
The recurrence rate of 18% is low compared with other studies, the researchers noted. Possible reasons for the difference include the population-based design of the current study, which meant that no patients were lost to follow-up, as well as the recent time period, “in which laparoscopic antireflux surgery has become more centralized to expert centers where selection of patients might be stricter and the quality of surgery might be higher,” they wrote.
The study findings were limited by several factors including clinical variations on coding, lack of data on certain confounding variables including body mass index and smoking, and a lack of control GERD patients who did not undergo antireflux surgery, the researchers said. The results suggest that the benefits of laparoscopic antireflux surgery may be diminished by the potential for recurrent GERD, they added.
The Swedish Research Council funded the study. The researchers had no financial conflicts to disclose.
FROM JAMA
Key clinical point: Young men were less likely than were other demographic groups to experience recurrence of gastroesophageal reflux after surgery.
Major finding: Overall, 18% of 2,655 adults who underwent reflux surgery experienced recurrent reflux requiring long-term medication or additional surgery.
Data source: A population-based, retrospective cohort study of reflux surgery patients in Sweden.
Disclosures: The Swedish Research Council supported the study.
Study linked H2 receptor antagonists, but not PPIs, to dementia
A large prospective study of middle-aged and older women found no convincing evidence that using proton pump inhibitors increased their risk of dementia, investigators reported.
However, using H2 receptor antagonists for at least 9 years was associated with a slight decrease in scores of learning and working memory (mean decrease, –0.2; 95% confidence interval, –0.3 to –0.08; P less than .001), Paul Lochhead, MBChB, PhD, and his associates wrote in the October issue of Gastroenterology (doi: 10.1053/j.gastro.2017.06.061). “Since our primary hypothesis related to PPI [proton pump inhibitor] use, our findings for [H2 receptor antagonists] should be interpreted with caution,” they said.
Source: American Gastroenterological Association
In a recent German study of a medical claims database, use of PPIs was associated with a 44% increase in the likelihood of incident dementia (JAMA Neurol. 2016;73:410-6). “The existence of a causal mechanism linking PPI use to dementia is suggested by observations from cellular and animal models of Alzheimer’s disease, where PPI exposure appears to influence amyloid-beta metabolism,” Dr. Lochhead and his associates wrote. “However, other preclinical data on PPIs and Alzheimer’s disease are conflicting.” Noting that cognitive function predicts dementia later in life, they analyzed prospective data on medications and other potential risk factors from 13,864 participants in the Nurses’ Health Study II who had completed Cogstate, a computerized, self-administered neuropsychological battery.
Study participants averaged 61 years old when they underwent cognitive testing, ranging in age from 50 to 70 years. Users of PPIs tended to be older, had more comorbidities, were less physically active, had higher body mass indexes, had less education, and ate a lower-quality diet than women who did not use PPIs. After adjusting for such confounders, using PPIs for 9-14 years was associated with a modest decrease in scores for psychomotor speed and attention (mean score difference, compared with never users, –0.06; 95% CI, –0.11 to 0.00; P = .03). “For comparison, in multivariable models, a 1-year increase in age was associated with mean score decreases of 0.03 for psychomotor speed and attention, 0.02 for learning and working memory, and 0.03 for overall cognition,” the researchers wrote.
Next, they examined links between use of H2 receptor antagonists and cognitive scores among 10,778 study participants who had used PPIs for 2 years or less. Use of H2 receptor antagonists for 9-14 years predicted poorer scores on learning, working memory, and overall cognition, even after controlling for potential confounders (P less than or equal to .002). “The magnitudes of mean score differences were larger than those observed in the analysis of PPI use, particularly for learning and working memory,” the researchers noted. Additionally, PPI use did not predict lower cognitive scores among individuals who had never used H2 receptor antagonists.
On the other hand, using PPIs for 9-14 years was associated with the equivalent of about 2 years of age-related cognitive decline, and controlling for exposure to H2 receptor antagonists weakened even this modest effect, the investigators said. Users and nonusers of PPIs tend to differ on many measures, and analyses of claims data, such as the German study above, are less able to account for these potential confounders, they noted. “Nonjudicious PPI prescribing is especially frequent among the elderly and those with cognitive impairment,” they added. “Therefore, elderly individuals who have frequent contact with health providers are at increased risk of both PPI prescription and dementia diagnosis. This bias may not be completely mitigated by adjustment for comorbidities or polypharmacy.”
The findings regarding H2 receptor antagonists reflect those of three smaller cohort studies, and these medications are known to cause central nervous system effects in the elderly, including delirium, the researchers said. Ranitidine and cimetidine have anticholinergic effects that also could “pose a risk for adverse cognitive effects with long-term use.”
Dr. Lochhead reported having no conflicts. Two coinvestigators disclosed ties to Bayer Healthcare, Pfizer, Aralez Pharmaceuticals, AbbVie, Samsung Bioepis, and Takeda.
Numerous possible PPI-related adverse events have been reported within the past few years; some resultant media attention has caused anxiety for patients. Dementia is a dreaded diagnosis. Therefore, initial reports that PPI treatment might be associated with an increased risk of dementia attracted considerable media attention, much of which was unbalanced and uninformed. There is no obvious biological rationale for such an association, and the risks reported initially were of small magnitude (for example, hazard ratios of approximately 1.4). However, patients cannot reliably assess levels of risk from media coverage that often veers toward sensationalism.
The study by Lochhead et al. is a welcome contribution to the topic of PPI safety. Using the Nurses’ Health Study II database, the investigators measured cognitive function in a large group of female PPI users and nonusers. Unsurprisingly, PPI users were older and sicker than nonusers. There were quantitatively small changes in some measures of cognitive function among PPI users. However, learning and working memory scores, which are more predictive of Alzheimer’s-type cognitive decline, were unaffected by PPI use.
For those prescribers with residual concerns about any association between PPIs and dementia, these prospectively collected data on cognitive function should provide further reassurance. It is appropriate that this study should have been highlighted in GI & Hepatology News, but since it lacks the potential sensationalism of studies that report a putative association, we should not expect it to be discussed on the TV evening news anytime soon!
Colin W. Howden, MD, AGAF, is chief of gastroenterology at University of Tennessee Health Science Center, Memphis. He has been a consultant, investigator, and/or speaker for all PPI manufacturers at some time. He is currently a consultant for Takeda, Aralez, and Pfizer Consumer Health.
Numerous possible PPI-related adverse events have been reported within the past few years; some resultant media attention has caused anxiety for patients. Dementia is a dreaded diagnosis. Therefore, initial reports that PPI treatment might be associated with an increased risk of dementia attracted considerable media attention, much of which was unbalanced and uninformed. There is no obvious biological rationale for such an association, and the risks reported initially were of small magnitude (for example, hazard ratios of approximately 1.4). However, patients cannot reliably assess levels of risk from media coverage that often veers toward sensationalism.
The study by Lochhead et al. is a welcome contribution to the topic of PPI safety. Using the Nurses’ Health Study II database, the investigators measured cognitive function in a large group of female PPI users and nonusers. Unsurprisingly, PPI users were older and sicker than nonusers. There were quantitatively small changes in some measures of cognitive function among PPI users. However, learning and working memory scores, which are more predictive of Alzheimer’s-type cognitive decline, were unaffected by PPI use.
For those prescribers with residual concerns about any association between PPIs and dementia, these prospectively collected data on cognitive function should provide further reassurance. It is appropriate that this study should have been highlighted in GI & Hepatology News, but since it lacks the potential sensationalism of studies that report a putative association, we should not expect it to be discussed on the TV evening news anytime soon!
Colin W. Howden, MD, AGAF, is chief of gastroenterology at University of Tennessee Health Science Center, Memphis. He has been a consultant, investigator, and/or speaker for all PPI manufacturers at some time. He is currently a consultant for Takeda, Aralez, and Pfizer Consumer Health.
Numerous possible PPI-related adverse events have been reported within the past few years; some resultant media attention has caused anxiety for patients. Dementia is a dreaded diagnosis. Therefore, initial reports that PPI treatment might be associated with an increased risk of dementia attracted considerable media attention, much of which was unbalanced and uninformed. There is no obvious biological rationale for such an association, and the risks reported initially were of small magnitude (for example, hazard ratios of approximately 1.4). However, patients cannot reliably assess levels of risk from media coverage that often veers toward sensationalism.
The study by Lochhead et al. is a welcome contribution to the topic of PPI safety. Using the Nurses’ Health Study II database, the investigators measured cognitive function in a large group of female PPI users and nonusers. Unsurprisingly, PPI users were older and sicker than nonusers. There were quantitatively small changes in some measures of cognitive function among PPI users. However, learning and working memory scores, which are more predictive of Alzheimer’s-type cognitive decline, were unaffected by PPI use.
For those prescribers with residual concerns about any association between PPIs and dementia, these prospectively collected data on cognitive function should provide further reassurance. It is appropriate that this study should have been highlighted in GI & Hepatology News, but since it lacks the potential sensationalism of studies that report a putative association, we should not expect it to be discussed on the TV evening news anytime soon!
Colin W. Howden, MD, AGAF, is chief of gastroenterology at University of Tennessee Health Science Center, Memphis. He has been a consultant, investigator, and/or speaker for all PPI manufacturers at some time. He is currently a consultant for Takeda, Aralez, and Pfizer Consumer Health.
A large prospective study of middle-aged and older women found no convincing evidence that using proton pump inhibitors increased their risk of dementia, investigators reported.
However, using H2 receptor antagonists for at least 9 years was associated with a slight decrease in scores of learning and working memory (mean decrease, –0.2; 95% confidence interval, –0.3 to –0.08; P less than .001), Paul Lochhead, MBChB, PhD, and his associates wrote in the October issue of Gastroenterology (doi: 10.1053/j.gastro.2017.06.061). “Since our primary hypothesis related to PPI [proton pump inhibitor] use, our findings for [H2 receptor antagonists] should be interpreted with caution,” they said.
Source: American Gastroenterological Association
In a recent German study of a medical claims database, use of PPIs was associated with a 44% increase in the likelihood of incident dementia (JAMA Neurol. 2016;73:410-6). “The existence of a causal mechanism linking PPI use to dementia is suggested by observations from cellular and animal models of Alzheimer’s disease, where PPI exposure appears to influence amyloid-beta metabolism,” Dr. Lochhead and his associates wrote. “However, other preclinical data on PPIs and Alzheimer’s disease are conflicting.” Noting that cognitive function predicts dementia later in life, they analyzed prospective data on medications and other potential risk factors from 13,864 participants in the Nurses’ Health Study II who had completed Cogstate, a computerized, self-administered neuropsychological battery.
Study participants averaged 61 years old when they underwent cognitive testing, ranging in age from 50 to 70 years. Users of PPIs tended to be older, had more comorbidities, were less physically active, had higher body mass indexes, had less education, and ate a lower-quality diet than women who did not use PPIs. After adjusting for such confounders, using PPIs for 9-14 years was associated with a modest decrease in scores for psychomotor speed and attention (mean score difference, compared with never users, –0.06; 95% CI, –0.11 to 0.00; P = .03). “For comparison, in multivariable models, a 1-year increase in age was associated with mean score decreases of 0.03 for psychomotor speed and attention, 0.02 for learning and working memory, and 0.03 for overall cognition,” the researchers wrote.
Next, they examined links between use of H2 receptor antagonists and cognitive scores among 10,778 study participants who had used PPIs for 2 years or less. Use of H2 receptor antagonists for 9-14 years predicted poorer scores on learning, working memory, and overall cognition, even after controlling for potential confounders (P less than or equal to .002). “The magnitudes of mean score differences were larger than those observed in the analysis of PPI use, particularly for learning and working memory,” the researchers noted. Additionally, PPI use did not predict lower cognitive scores among individuals who had never used H2 receptor antagonists.
On the other hand, using PPIs for 9-14 years was associated with the equivalent of about 2 years of age-related cognitive decline, and controlling for exposure to H2 receptor antagonists weakened even this modest effect, the investigators said. Users and nonusers of PPIs tend to differ on many measures, and analyses of claims data, such as the German study above, are less able to account for these potential confounders, they noted. “Nonjudicious PPI prescribing is especially frequent among the elderly and those with cognitive impairment,” they added. “Therefore, elderly individuals who have frequent contact with health providers are at increased risk of both PPI prescription and dementia diagnosis. This bias may not be completely mitigated by adjustment for comorbidities or polypharmacy.”
The findings regarding H2 receptor antagonists reflect those of three smaller cohort studies, and these medications are known to cause central nervous system effects in the elderly, including delirium, the researchers said. Ranitidine and cimetidine have anticholinergic effects that also could “pose a risk for adverse cognitive effects with long-term use.”
Dr. Lochhead reported having no conflicts. Two coinvestigators disclosed ties to Bayer Healthcare, Pfizer, Aralez Pharmaceuticals, AbbVie, Samsung Bioepis, and Takeda.
A large prospective study of middle-aged and older women found no convincing evidence that using proton pump inhibitors increased their risk of dementia, investigators reported.
However, using H2 receptor antagonists for at least 9 years was associated with a slight decrease in scores of learning and working memory (mean decrease, –0.2; 95% confidence interval, –0.3 to –0.08; P less than .001), Paul Lochhead, MBChB, PhD, and his associates wrote in the October issue of Gastroenterology (doi: 10.1053/j.gastro.2017.06.061). “Since our primary hypothesis related to PPI [proton pump inhibitor] use, our findings for [H2 receptor antagonists] should be interpreted with caution,” they said.
Source: American Gastroenterological Association
In a recent German study of a medical claims database, use of PPIs was associated with a 44% increase in the likelihood of incident dementia (JAMA Neurol. 2016;73:410-6). “The existence of a causal mechanism linking PPI use to dementia is suggested by observations from cellular and animal models of Alzheimer’s disease, where PPI exposure appears to influence amyloid-beta metabolism,” Dr. Lochhead and his associates wrote. “However, other preclinical data on PPIs and Alzheimer’s disease are conflicting.” Noting that cognitive function predicts dementia later in life, they analyzed prospective data on medications and other potential risk factors from 13,864 participants in the Nurses’ Health Study II who had completed Cogstate, a computerized, self-administered neuropsychological battery.
Study participants averaged 61 years old when they underwent cognitive testing, ranging in age from 50 to 70 years. Users of PPIs tended to be older, had more comorbidities, were less physically active, had higher body mass indexes, had less education, and ate a lower-quality diet than women who did not use PPIs. After adjusting for such confounders, using PPIs for 9-14 years was associated with a modest decrease in scores for psychomotor speed and attention (mean score difference, compared with never users, –0.06; 95% CI, –0.11 to 0.00; P = .03). “For comparison, in multivariable models, a 1-year increase in age was associated with mean score decreases of 0.03 for psychomotor speed and attention, 0.02 for learning and working memory, and 0.03 for overall cognition,” the researchers wrote.
Next, they examined links between use of H2 receptor antagonists and cognitive scores among 10,778 study participants who had used PPIs for 2 years or less. Use of H2 receptor antagonists for 9-14 years predicted poorer scores on learning, working memory, and overall cognition, even after controlling for potential confounders (P less than or equal to .002). “The magnitudes of mean score differences were larger than those observed in the analysis of PPI use, particularly for learning and working memory,” the researchers noted. Additionally, PPI use did not predict lower cognitive scores among individuals who had never used H2 receptor antagonists.
On the other hand, using PPIs for 9-14 years was associated with the equivalent of about 2 years of age-related cognitive decline, and controlling for exposure to H2 receptor antagonists weakened even this modest effect, the investigators said. Users and nonusers of PPIs tend to differ on many measures, and analyses of claims data, such as the German study above, are less able to account for these potential confounders, they noted. “Nonjudicious PPI prescribing is especially frequent among the elderly and those with cognitive impairment,” they added. “Therefore, elderly individuals who have frequent contact with health providers are at increased risk of both PPI prescription and dementia diagnosis. This bias may not be completely mitigated by adjustment for comorbidities or polypharmacy.”
The findings regarding H2 receptor antagonists reflect those of three smaller cohort studies, and these medications are known to cause central nervous system effects in the elderly, including delirium, the researchers said. Ranitidine and cimetidine have anticholinergic effects that also could “pose a risk for adverse cognitive effects with long-term use.”
Dr. Lochhead reported having no conflicts. Two coinvestigators disclosed ties to Bayer Healthcare, Pfizer, Aralez Pharmaceuticals, AbbVie, Samsung Bioepis, and Takeda.
FROM GASTROENTEROLOGY
Key clinical point: A large prospective cohort study linked long-term use of H2 receptor antagonists, but not PPIs, to dementia.
Major finding: Use of PPIs did not significantly predict incident dementia in the adjusted analysis. However, using H2 receptor antagonists for at least 9 years was associated with a slight decrease in scores of learning and working memory (mean decrease, –0.2; P less than .001).
Data source: A population-based cohort study of 13,864 middle-aged and older women.
Disclosures: Dr. Lochhead reported having no conflicts. Two coinvestigators disclosed ties to Bayer Healthcare, Pfizer, Aralez Pharmaceuticals, AbbVie, Samsung Bioepis, and Takeda.