Endoscopy

PHILADELPHIA — New data showed durable weight loss of about 10% at 10 years after endoscopic sleeve gastroplasty (ESG) in adults with obesity.

“The procedure is dependable and safe and should be considered among individuals who have not attained their desired results through lifestyle medications and those who are not eligible for or choose not to undergo bariatric procedures,” said Ali Lahooti, with the Department of Gastroenterology and Hepatology, Weill Cornell Medical College, New York City. He presented his research at the annual meeting of the American College of Gastroenterology (ACG).

Obesity is a growing global health challenge. Lifestyle modification as a standalone therapy has limited effectiveness achieving weight loss. Pharmacotherapies are more efficacious, but they’re also associated with higher costs of and risk for side effects, leading to lower rates of compliance, Lahooti explained.

Bariatric surgery remains the most effective therapy for management of obesity and improvement of comorbid conditions, yet < 1% of candidates undergo a surgical intervention either because of access, cost, or fear of the procedure.

“Endoscopic treatments for obesity, such as ESG, can potentially fill this gap by combining durable weight loss with lower risk and costs,” Lahooti said.

He and his colleagues assessed outcomes out to 10 years in 404 patients (mean age, 45 years; 76% women; mean body mass index, 37.3) who underwent ESG between 2013 and 2024 at a single large tertiary hospital.

Out of the 404 patients, 397, 335, 249, and 110 patients were eligible for 1-, 3-, 5-, and 10-year follow-up, with complete follow-up rates of 85%, 66%, 79%, and 62%, respectively.

The primary outcome was weight loss at 10 years after ESG reported at percent total body weight loss (%TBWL).

At 10 years, mean %TBWL (the primary outcome) was 10.5% — with 53% of patients maintaining at least 5% TBWL and 42% maintaining at least 10% weight loss, Lahooti reported.

ESG had a favorable safety profile; 20% of patients experienced mild abdominal pain, constipation, heartburn, and nausea after the procedure that typically resolved within 2 weeks of the procedure.

“There were a total of three moderate adverse events — two perigastric leaks, one repaired endoscopically, and another that only required antibiotics,” Lahooti reported. There were no severe or fatal adverse events.

About 11% of patients had endoscopic revision via retightening or resuturing at 10 years, the study team noted in their conference abstract.

 

Bariatric Surgery Remains Gold Standard

Lahooti shared that in his experience, some patients will need a revision at “about 40 months,” but at the same time, he’s seen some patients at 10 years “and their sutures are still in place.”

Session comoderator Shivangi Kothari, MD, with the Center for Advanced Therapeutic Endoscopy, University of Rochester Medical Center in New York, congratulated Lahooti for providing “robust” long-term data on ESG and said, “there is a need for more studies like this.”

In an interview, Ann M. Rogers, MD, president of the American Society for Metabolic and Bariatric Surgery, noted that bariatric surgery remains the “gold standard for weight loss and metabolic improvements,” with studies showing “around 30%” TWBL at 10 years, compared with about 10% at 10 years in this study.

Another key caveat, said Rogers, is that there are practical barriers to ESG; insurance typically does not cover the procedure because they view it as “cosmetic.”

The study had no commercial funding. Lahooti and Rogers had no relevant disclosures.

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

PHILADELPHIA — New data showed durable weight loss of about 10% at 10 years after endoscopic sleeve gastroplasty (ESG) in adults with obesity.

“The procedure is dependable and safe and should be considered among individuals who have not attained their desired results through lifestyle medications and those who are not eligible for or choose not to undergo bariatric procedures,” said Ali Lahooti, with the Department of Gastroenterology and Hepatology, Weill Cornell Medical College, New York City. He presented his research at the annual meeting of the American College of Gastroenterology (ACG).

Obesity is a growing global health challenge. Lifestyle modification as a standalone therapy has limited effectiveness achieving weight loss. Pharmacotherapies are more efficacious, but they’re also associated with higher costs of and risk for side effects, leading to lower rates of compliance, Lahooti explained.

Bariatric surgery remains the most effective therapy for management of obesity and improvement of comorbid conditions, yet < 1% of candidates undergo a surgical intervention either because of access, cost, or fear of the procedure.

“Endoscopic treatments for obesity, such as ESG, can potentially fill this gap by combining durable weight loss with lower risk and costs,” Lahooti said.

He and his colleagues assessed outcomes out to 10 years in 404 patients (mean age, 45 years; 76% women; mean body mass index, 37.3) who underwent ESG between 2013 and 2024 at a single large tertiary hospital.

Out of the 404 patients, 397, 335, 249, and 110 patients were eligible for 1-, 3-, 5-, and 10-year follow-up, with complete follow-up rates of 85%, 66%, 79%, and 62%, respectively.

The primary outcome was weight loss at 10 years after ESG reported at percent total body weight loss (%TBWL).

At 10 years, mean %TBWL (the primary outcome) was 10.5% — with 53% of patients maintaining at least 5% TBWL and 42% maintaining at least 10% weight loss, Lahooti reported.

ESG had a favorable safety profile; 20% of patients experienced mild abdominal pain, constipation, heartburn, and nausea after the procedure that typically resolved within 2 weeks of the procedure.

“There were a total of three moderate adverse events — two perigastric leaks, one repaired endoscopically, and another that only required antibiotics,” Lahooti reported. There were no severe or fatal adverse events.

About 11% of patients had endoscopic revision via retightening or resuturing at 10 years, the study team noted in their conference abstract.

 

Bariatric Surgery Remains Gold Standard

Lahooti shared that in his experience, some patients will need a revision at “about 40 months,” but at the same time, he’s seen some patients at 10 years “and their sutures are still in place.”

Session comoderator Shivangi Kothari, MD, with the Center for Advanced Therapeutic Endoscopy, University of Rochester Medical Center in New York, congratulated Lahooti for providing “robust” long-term data on ESG and said, “there is a need for more studies like this.”

In an interview, Ann M. Rogers, MD, president of the American Society for Metabolic and Bariatric Surgery, noted that bariatric surgery remains the “gold standard for weight loss and metabolic improvements,” with studies showing “around 30%” TWBL at 10 years, compared with about 10% at 10 years in this study.

Another key caveat, said Rogers, is that there are practical barriers to ESG; insurance typically does not cover the procedure because they view it as “cosmetic.”

The study had no commercial funding. Lahooti and Rogers had no relevant disclosures.

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

PHILADELPHIA — New data showed durable weight loss of about 10% at 10 years after endoscopic sleeve gastroplasty (ESG) in adults with obesity.

“The procedure is dependable and safe and should be considered among individuals who have not attained their desired results through lifestyle medications and those who are not eligible for or choose not to undergo bariatric procedures,” said Ali Lahooti, with the Department of Gastroenterology and Hepatology, Weill Cornell Medical College, New York City. He presented his research at the annual meeting of the American College of Gastroenterology (ACG).

Obesity is a growing global health challenge. Lifestyle modification as a standalone therapy has limited effectiveness achieving weight loss. Pharmacotherapies are more efficacious, but they’re also associated with higher costs of and risk for side effects, leading to lower rates of compliance, Lahooti explained.

Bariatric surgery remains the most effective therapy for management of obesity and improvement of comorbid conditions, yet < 1% of candidates undergo a surgical intervention either because of access, cost, or fear of the procedure.

“Endoscopic treatments for obesity, such as ESG, can potentially fill this gap by combining durable weight loss with lower risk and costs,” Lahooti said.

He and his colleagues assessed outcomes out to 10 years in 404 patients (mean age, 45 years; 76% women; mean body mass index, 37.3) who underwent ESG between 2013 and 2024 at a single large tertiary hospital.

Out of the 404 patients, 397, 335, 249, and 110 patients were eligible for 1-, 3-, 5-, and 10-year follow-up, with complete follow-up rates of 85%, 66%, 79%, and 62%, respectively.

The primary outcome was weight loss at 10 years after ESG reported at percent total body weight loss (%TBWL).

At 10 years, mean %TBWL (the primary outcome) was 10.5% — with 53% of patients maintaining at least 5% TBWL and 42% maintaining at least 10% weight loss, Lahooti reported.

ESG had a favorable safety profile; 20% of patients experienced mild abdominal pain, constipation, heartburn, and nausea after the procedure that typically resolved within 2 weeks of the procedure.

“There were a total of three moderate adverse events — two perigastric leaks, one repaired endoscopically, and another that only required antibiotics,” Lahooti reported. There were no severe or fatal adverse events.

About 11% of patients had endoscopic revision via retightening or resuturing at 10 years, the study team noted in their conference abstract.

 

Bariatric Surgery Remains Gold Standard

Lahooti shared that in his experience, some patients will need a revision at “about 40 months,” but at the same time, he’s seen some patients at 10 years “and their sutures are still in place.”

Session comoderator Shivangi Kothari, MD, with the Center for Advanced Therapeutic Endoscopy, University of Rochester Medical Center in New York, congratulated Lahooti for providing “robust” long-term data on ESG and said, “there is a need for more studies like this.”

In an interview, Ann M. Rogers, MD, president of the American Society for Metabolic and Bariatric Surgery, noted that bariatric surgery remains the “gold standard for weight loss and metabolic improvements,” with studies showing “around 30%” TWBL at 10 years, compared with about 10% at 10 years in this study.

Another key caveat, said Rogers, is that there are practical barriers to ESG; insurance typically does not cover the procedure because they view it as “cosmetic.”

The study had no commercial funding. Lahooti and Rogers had no relevant disclosures.

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

Semaglutide use is associated with an increased risk of retained solid gastric contents, but colonoscopy prep appears to mitigate this issue, according to investigators.

These findings suggest that patients taking GLP-1 receptor agonists (GLP-1RAs) may benefit from a 24-hour liquid fast before anesthetic procedures without the need for a medication hold, reported lead author Haarika Korlipara, MD, of NewYork–Presbyterian/Weill Cornell Medical Center, New York, and colleagues.

“[T]he effects of delayed gastric emptying in patients on long-acting GLP-1RAs are clinically important in the management of anesthetized patients, who may develop periprocedural complications in the setting of retained solid gastric contents,” the investigators wrote in Techniques and Innovations in Gastrointestinal Endoscopy.

NewYork-Presbyterian/Weill Cornell Medical Center

The researchers retrospectively analyzed clinical data from 1,212 patients undergoing upper endoscopy at a tertiary care center. Among them, 602 were on semaglutide for more than four weeks, while 610 were controls not taking the medication.

The primary outcome was the presence of retained solid gastric contents. Secondary outcomes included the need for intubation, early procedure termination, and recommendations for repeat endoscopy.

Semaglutide use was an independent predictor of retained solid gastric contents (odds ratio [OR], 4.74; 95% CI, 2.40-9.35; P less than .0001). Multivariable propensity-matched analysis showed a 6% absolute increase in retained gastric contents in the semaglutide group compared to controls (P less than .0001).

This increase appeared clinically relevant, as semaglutide use was associated with a higher rate of early procedure termination (OR, 3.09; P = 0.02) and recommendations for repeat endoscopies (OR, 3.61; P = 0.02), “indicating the degree of retained solid gastric contents was enough to limit the intended gastric mucosal examination,” the investigators wrote.

However, patients who underwent same-day colonoscopy, which included a 24-hour clear liquid fast leading up to the procedure, were less likely to have retained gastric contents (OR, 0.41; 95% CI, 0.23-0.73; P = 0.003), suggesting that extended fasting protocols may mitigate the risk of procedural complications.

“Patients with a history of gastroparesis are often advised to stop ingesting solid foods and maintain a clear liquid diet for a longer period than standard ASA guidance before anesthetized procedures,” Dr. Korlipara and colleagues wrote. “In our opinion, this recommendation should be considered in patients on long-term GLP-1RA therapy, in response to the findings reported in this study and others about the protective effects of a 24-hour liquid fast.”

Point-of-care gastric ultrasound may also be considered to evaluate patients at higher risk of retained stomach contents, they added, especially in patients with additional risk factors for delayed gastric emptying.

“Previously published data have linked prolonged gastric emptying delays in patients chronically using these medications,” they wrote. “Considering the effect on blood sugar and associated procedural risk, especially in patients taking this medication for diabetes management, more studies are warranted to determine the effect of medication on periprocedural complications and recommend repeat evaluation.”

After this study was released, new clinical guidance on the use of GLP-1RAs before surgery was co-published by AGA and four other societies. The guidance notes that, in most cases, patients can continue to take GLP-1RAs, but individual risk factors for complications should be assessed prior to surgery. The guidance cautions that patients at high risk for significant GI side effects should follow a liquid diet for 24 hours before a procedure and the anesthesia plan be adjusted accordingly. In rare cases, the procedure should be delayed.

Dr. Korlipara disclosed no conflicts of interest.

Semaglutide use is associated with an increased risk of retained solid gastric contents, but colonoscopy prep appears to mitigate this issue, according to investigators.

These findings suggest that patients taking GLP-1 receptor agonists (GLP-1RAs) may benefit from a 24-hour liquid fast before anesthetic procedures without the need for a medication hold, reported lead author Haarika Korlipara, MD, of NewYork–Presbyterian/Weill Cornell Medical Center, New York, and colleagues.

“[T]he effects of delayed gastric emptying in patients on long-acting GLP-1RAs are clinically important in the management of anesthetized patients, who may develop periprocedural complications in the setting of retained solid gastric contents,” the investigators wrote in Techniques and Innovations in Gastrointestinal Endoscopy.

NewYork-Presbyterian/Weill Cornell Medical Center

The researchers retrospectively analyzed clinical data from 1,212 patients undergoing upper endoscopy at a tertiary care center. Among them, 602 were on semaglutide for more than four weeks, while 610 were controls not taking the medication.

The primary outcome was the presence of retained solid gastric contents. Secondary outcomes included the need for intubation, early procedure termination, and recommendations for repeat endoscopy.

Semaglutide use was an independent predictor of retained solid gastric contents (odds ratio [OR], 4.74; 95% CI, 2.40-9.35; P less than .0001). Multivariable propensity-matched analysis showed a 6% absolute increase in retained gastric contents in the semaglutide group compared to controls (P less than .0001).

This increase appeared clinically relevant, as semaglutide use was associated with a higher rate of early procedure termination (OR, 3.09; P = 0.02) and recommendations for repeat endoscopies (OR, 3.61; P = 0.02), “indicating the degree of retained solid gastric contents was enough to limit the intended gastric mucosal examination,” the investigators wrote.

However, patients who underwent same-day colonoscopy, which included a 24-hour clear liquid fast leading up to the procedure, were less likely to have retained gastric contents (OR, 0.41; 95% CI, 0.23-0.73; P = 0.003), suggesting that extended fasting protocols may mitigate the risk of procedural complications.

“Patients with a history of gastroparesis are often advised to stop ingesting solid foods and maintain a clear liquid diet for a longer period than standard ASA guidance before anesthetized procedures,” Dr. Korlipara and colleagues wrote. “In our opinion, this recommendation should be considered in patients on long-term GLP-1RA therapy, in response to the findings reported in this study and others about the protective effects of a 24-hour liquid fast.”

Point-of-care gastric ultrasound may also be considered to evaluate patients at higher risk of retained stomach contents, they added, especially in patients with additional risk factors for delayed gastric emptying.

“Previously published data have linked prolonged gastric emptying delays in patients chronically using these medications,” they wrote. “Considering the effect on blood sugar and associated procedural risk, especially in patients taking this medication for diabetes management, more studies are warranted to determine the effect of medication on periprocedural complications and recommend repeat evaluation.”

After this study was released, new clinical guidance on the use of GLP-1RAs before surgery was co-published by AGA and four other societies. The guidance notes that, in most cases, patients can continue to take GLP-1RAs, but individual risk factors for complications should be assessed prior to surgery. The guidance cautions that patients at high risk for significant GI side effects should follow a liquid diet for 24 hours before a procedure and the anesthesia plan be adjusted accordingly. In rare cases, the procedure should be delayed.

Dr. Korlipara disclosed no conflicts of interest.

Semaglutide use is associated with an increased risk of retained solid gastric contents, but colonoscopy prep appears to mitigate this issue, according to investigators.

These findings suggest that patients taking GLP-1 receptor agonists (GLP-1RAs) may benefit from a 24-hour liquid fast before anesthetic procedures without the need for a medication hold, reported lead author Haarika Korlipara, MD, of NewYork–Presbyterian/Weill Cornell Medical Center, New York, and colleagues.

“[T]he effects of delayed gastric emptying in patients on long-acting GLP-1RAs are clinically important in the management of anesthetized patients, who may develop periprocedural complications in the setting of retained solid gastric contents,” the investigators wrote in Techniques and Innovations in Gastrointestinal Endoscopy.

NewYork-Presbyterian/Weill Cornell Medical Center

The researchers retrospectively analyzed clinical data from 1,212 patients undergoing upper endoscopy at a tertiary care center. Among them, 602 were on semaglutide for more than four weeks, while 610 were controls not taking the medication.

The primary outcome was the presence of retained solid gastric contents. Secondary outcomes included the need for intubation, early procedure termination, and recommendations for repeat endoscopy.

Semaglutide use was an independent predictor of retained solid gastric contents (odds ratio [OR], 4.74; 95% CI, 2.40-9.35; P less than .0001). Multivariable propensity-matched analysis showed a 6% absolute increase in retained gastric contents in the semaglutide group compared to controls (P less than .0001).

This increase appeared clinically relevant, as semaglutide use was associated with a higher rate of early procedure termination (OR, 3.09; P = 0.02) and recommendations for repeat endoscopies (OR, 3.61; P = 0.02), “indicating the degree of retained solid gastric contents was enough to limit the intended gastric mucosal examination,” the investigators wrote.

However, patients who underwent same-day colonoscopy, which included a 24-hour clear liquid fast leading up to the procedure, were less likely to have retained gastric contents (OR, 0.41; 95% CI, 0.23-0.73; P = 0.003), suggesting that extended fasting protocols may mitigate the risk of procedural complications.

“Patients with a history of gastroparesis are often advised to stop ingesting solid foods and maintain a clear liquid diet for a longer period than standard ASA guidance before anesthetized procedures,” Dr. Korlipara and colleagues wrote. “In our opinion, this recommendation should be considered in patients on long-term GLP-1RA therapy, in response to the findings reported in this study and others about the protective effects of a 24-hour liquid fast.”

Point-of-care gastric ultrasound may also be considered to evaluate patients at higher risk of retained stomach contents, they added, especially in patients with additional risk factors for delayed gastric emptying.

“Previously published data have linked prolonged gastric emptying delays in patients chronically using these medications,” they wrote. “Considering the effect on blood sugar and associated procedural risk, especially in patients taking this medication for diabetes management, more studies are warranted to determine the effect of medication on periprocedural complications and recommend repeat evaluation.”

After this study was released, new clinical guidance on the use of GLP-1RAs before surgery was co-published by AGA and four other societies. The guidance notes that, in most cases, patients can continue to take GLP-1RAs, but individual risk factors for complications should be assessed prior to surgery. The guidance cautions that patients at high risk for significant GI side effects should follow a liquid diet for 24 hours before a procedure and the anesthesia plan be adjusted accordingly. In rare cases, the procedure should be delayed.

Dr. Korlipara disclosed no conflicts of interest.

The majority of patients may safely take glucagon-like peptide 1 receptor agonists (GLP-1 RAs) before elective surgery and gastrointestinal endoscopies, according to updated guidance from five medical societies.

The new guidance, contrasting with earlier recommendations, says these incrementally used agents can be taken up until the day of surgery, but patients are advised to follow a liquid diet for 24 hours before the procedure. The decision to proceed with endoscopy and other procedures should be based on shared decision-making with the patient and interdisciplinary care teams in conjunction with minimization of the aspiration risk from delayed gastric emptying, the guidance stresses.

The five endorsing organizations are the American Society for Metabolic and Bariatric Surgery, American Society of Anesthesiologists (ASA), American Gastroenterological Association, International Society of Perioperative Care of Patients with Obesity, and Society of American Gastrointestinal and Endoscopic Surgeons. The societies emphasize that the statement is intended as guidance only and is not an evidence-based formal guideline.

GLP-1 RAs are known to delay gastric emptying, raising concerns about regurgitation, aspiration, and airway compromise during anesthesia. Rare serious adverse events have also been observed, prompting the ASA in 2023 to recommend holding these agents for 1 week for the injectable form and 1 day for the oral form before all procedures requiring anesthesia. 

 

University of Michigan

That abundance of caution, however, had negative impacts of its own. “This guidance has led to cancellations and postponements of many endoscopic and surgical procedures or required patients to undergo general anesthesia who may otherwise have had their procedures performed under moderate sedation,” said guidance coauthor Allison R. Schulman, MD, MPH, an associate professor of medicine and surgery and chief of endoscopy at the University of Michigan in Ann Arbor. “Nearly all institutions have been forced to revise preprocedural protocols, despite a lack of high-level evidence to suggest that these adjustments are necessary.”

“Studies have yielded mixed results as to whether patients on GLP-1s are at increased risk of these events, and the limited data available are inconsistent,” Schulman said. “As a result, there are inconsistencies in the recommendations from various societies leading to growing uncertainty with proceduralists on how to provide safe, effective, and timely procedural care to patients taking GLP-1 RAs.”

The new joint-society guidance may alleviate some of the uncertainty. Among the recommendations:

• Continuing GLP-1 RAs in the perioperative period should be based on shared decision-making with the patient and all care teams balancing the metabolic need for the GLP-1 RA with individual patient risk.
• Certain variables may increase the risk for delayed gastric emptying and aspiration with the periprocedural use of GLP-1 RAs: escalation phase — This phase vs the maintenance phase is associated with a higher risk for delayed gastric emptying; higher dose — the higher the dose, the greater the risk for gastrointestinal (GI) side effects; weekly dosing — GI side effects are more common with weekly vs daily formulations; presence of GI symptoms — nausea, vomiting, abdominal pain, dyspepsia, and constipation may suggest delayed gastric emptying; and medical problems beyond GLP-1 RA indications with GI effects — assess for such conditions as bowel dysmotility, gastroparesis, and Parkinson’s disease.
• Risk factors should be assessed in advance to allow sufficient time to adjust preoperative care, including diet modification and medication bridging if GLP-1 RA cessation is deemed advisable.
• If retained gastric contents are a concern on the day of a procedure, point-of-care gastric ultrasound could be used to assess aspiration risk, resources permitting.
• The aspiration risk from delayed gastric emptying should be minimized by preoperative diet modification and/or altering the anesthesia plan to consider rapid sequence induction of general anesthesia for tracheal intubation. A 24-hour preoperative liquid diet, as before colonoscopy and bariatric surgery, can be utilized when delayed gastric emptying is a concern.
• When concern about retained gastric contents exists on procedure day, providers should engage patients in a shared decision-making model and consider the benefits and risks of rapid-sequence induction of general anesthesia for tracheal intubation to minimize aspiration risk vs procedure cancellation.

“Safe continuation of surgery and gastrointestinal endoscopy, and prevention of procedure cancellation, for patients on GLP-1 RAs can be prioritized following the recommendations above, as would occur for other patient populations with gastroparesis,” the guidance panel wrote.

 

Digestive Health Center of Huntington

Commenting on the statement but not involved in it, David B. Purow, MD, managing director of the Digestive Health Center at Northwell Health/Huntington Hospital in Huntington, New York, said the recommendations will encourage clinicians to be more discerning about actual risk in individual cases rather than follow the previous blanket recommendation to stop these agents before procedures requiring sedation. 

While GLP-1 RAs were prescribed for the relatively small number of patients with diabetes, he said, the risk was not apparent but became clearer with the widespread use of these agents for weight loss — often unregulated and undisclosed to care providers.

“The pendulum shifted too far the other way, and now it’s shifted back,” he said in an interview. “The new guidance is great because now we can be more thoughtful about managing individual patients.” He cited, for instance, the recommendations on the greater risk in patients in the dose escalation phase or on higher doses, and the risk-reducing measure of a liquid diet for 24 hours before surgery.

His center is already using point-of-care ultrasound and recently had a case in which a patient who forgot and took his GLP-1 RA before a scheduled procedure was found on ultrasound to have a full stomach. “In some cases, these drugs can cause an almost gastroparesis level of delayed emptying,” Purow said.

Purow thinks this early guidance will probably progress to firm guidelines within a year. Schulman is more cautious. “Our understanding of this complex topic is increasing rapidly, and ongoing clinical research will ultimately lead to evidence-based guidelines in this changing landscape,” she said.

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. Schulman is a consultant for Apollo Endosurgery, Boston Scientific, Olympus, Microtech, and Fractyl. Purow had no competing interests to declare.

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

The majority of patients may safely take glucagon-like peptide 1 receptor agonists (GLP-1 RAs) before elective surgery and gastrointestinal endoscopies, according to updated guidance from five medical societies.

The new guidance, contrasting with earlier recommendations, says these incrementally used agents can be taken up until the day of surgery, but patients are advised to follow a liquid diet for 24 hours before the procedure. The decision to proceed with endoscopy and other procedures should be based on shared decision-making with the patient and interdisciplinary care teams in conjunction with minimization of the aspiration risk from delayed gastric emptying, the guidance stresses.

The five endorsing organizations are the American Society for Metabolic and Bariatric Surgery, American Society of Anesthesiologists (ASA), American Gastroenterological Association, International Society of Perioperative Care of Patients with Obesity, and Society of American Gastrointestinal and Endoscopic Surgeons. The societies emphasize that the statement is intended as guidance only and is not an evidence-based formal guideline.

GLP-1 RAs are known to delay gastric emptying, raising concerns about regurgitation, aspiration, and airway compromise during anesthesia. Rare serious adverse events have also been observed, prompting the ASA in 2023 to recommend holding these agents for 1 week for the injectable form and 1 day for the oral form before all procedures requiring anesthesia. 

 

University of Michigan

That abundance of caution, however, had negative impacts of its own. “This guidance has led to cancellations and postponements of many endoscopic and surgical procedures or required patients to undergo general anesthesia who may otherwise have had their procedures performed under moderate sedation,” said guidance coauthor Allison R. Schulman, MD, MPH, an associate professor of medicine and surgery and chief of endoscopy at the University of Michigan in Ann Arbor. “Nearly all institutions have been forced to revise preprocedural protocols, despite a lack of high-level evidence to suggest that these adjustments are necessary.”

“Studies have yielded mixed results as to whether patients on GLP-1s are at increased risk of these events, and the limited data available are inconsistent,” Schulman said. “As a result, there are inconsistencies in the recommendations from various societies leading to growing uncertainty with proceduralists on how to provide safe, effective, and timely procedural care to patients taking GLP-1 RAs.”

The new joint-society guidance may alleviate some of the uncertainty. Among the recommendations:

• Continuing GLP-1 RAs in the perioperative period should be based on shared decision-making with the patient and all care teams balancing the metabolic need for the GLP-1 RA with individual patient risk.
• Certain variables may increase the risk for delayed gastric emptying and aspiration with the periprocedural use of GLP-1 RAs: escalation phase — This phase vs the maintenance phase is associated with a higher risk for delayed gastric emptying; higher dose — the higher the dose, the greater the risk for gastrointestinal (GI) side effects; weekly dosing — GI side effects are more common with weekly vs daily formulations; presence of GI symptoms — nausea, vomiting, abdominal pain, dyspepsia, and constipation may suggest delayed gastric emptying; and medical problems beyond GLP-1 RA indications with GI effects — assess for such conditions as bowel dysmotility, gastroparesis, and Parkinson’s disease.
• Risk factors should be assessed in advance to allow sufficient time to adjust preoperative care, including diet modification and medication bridging if GLP-1 RA cessation is deemed advisable.
• If retained gastric contents are a concern on the day of a procedure, point-of-care gastric ultrasound could be used to assess aspiration risk, resources permitting.
• The aspiration risk from delayed gastric emptying should be minimized by preoperative diet modification and/or altering the anesthesia plan to consider rapid sequence induction of general anesthesia for tracheal intubation. A 24-hour preoperative liquid diet, as before colonoscopy and bariatric surgery, can be utilized when delayed gastric emptying is a concern.
• When concern about retained gastric contents exists on procedure day, providers should engage patients in a shared decision-making model and consider the benefits and risks of rapid-sequence induction of general anesthesia for tracheal intubation to minimize aspiration risk vs procedure cancellation.

“Safe continuation of surgery and gastrointestinal endoscopy, and prevention of procedure cancellation, for patients on GLP-1 RAs can be prioritized following the recommendations above, as would occur for other patient populations with gastroparesis,” the guidance panel wrote.

 

Digestive Health Center of Huntington

Commenting on the statement but not involved in it, David B. Purow, MD, managing director of the Digestive Health Center at Northwell Health/Huntington Hospital in Huntington, New York, said the recommendations will encourage clinicians to be more discerning about actual risk in individual cases rather than follow the previous blanket recommendation to stop these agents before procedures requiring sedation. 

While GLP-1 RAs were prescribed for the relatively small number of patients with diabetes, he said, the risk was not apparent but became clearer with the widespread use of these agents for weight loss — often unregulated and undisclosed to care providers.

“The pendulum shifted too far the other way, and now it’s shifted back,” he said in an interview. “The new guidance is great because now we can be more thoughtful about managing individual patients.” He cited, for instance, the recommendations on the greater risk in patients in the dose escalation phase or on higher doses, and the risk-reducing measure of a liquid diet for 24 hours before surgery.

His center is already using point-of-care ultrasound and recently had a case in which a patient who forgot and took his GLP-1 RA before a scheduled procedure was found on ultrasound to have a full stomach. “In some cases, these drugs can cause an almost gastroparesis level of delayed emptying,” Purow said.

Purow thinks this early guidance will probably progress to firm guidelines within a year. Schulman is more cautious. “Our understanding of this complex topic is increasing rapidly, and ongoing clinical research will ultimately lead to evidence-based guidelines in this changing landscape,” she said.

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. Schulman is a consultant for Apollo Endosurgery, Boston Scientific, Olympus, Microtech, and Fractyl. Purow had no competing interests to declare.

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

The majority of patients may safely take glucagon-like peptide 1 receptor agonists (GLP-1 RAs) before elective surgery and gastrointestinal endoscopies, according to updated guidance from five medical societies.

The new guidance, contrasting with earlier recommendations, says these incrementally used agents can be taken up until the day of surgery, but patients are advised to follow a liquid diet for 24 hours before the procedure. The decision to proceed with endoscopy and other procedures should be based on shared decision-making with the patient and interdisciplinary care teams in conjunction with minimization of the aspiration risk from delayed gastric emptying, the guidance stresses.

The five endorsing organizations are the American Society for Metabolic and Bariatric Surgery, American Society of Anesthesiologists (ASA), American Gastroenterological Association, International Society of Perioperative Care of Patients with Obesity, and Society of American Gastrointestinal and Endoscopic Surgeons. The societies emphasize that the statement is intended as guidance only and is not an evidence-based formal guideline.

GLP-1 RAs are known to delay gastric emptying, raising concerns about regurgitation, aspiration, and airway compromise during anesthesia. Rare serious adverse events have also been observed, prompting the ASA in 2023 to recommend holding these agents for 1 week for the injectable form and 1 day for the oral form before all procedures requiring anesthesia. 

 

University of Michigan

That abundance of caution, however, had negative impacts of its own. “This guidance has led to cancellations and postponements of many endoscopic and surgical procedures or required patients to undergo general anesthesia who may otherwise have had their procedures performed under moderate sedation,” said guidance coauthor Allison R. Schulman, MD, MPH, an associate professor of medicine and surgery and chief of endoscopy at the University of Michigan in Ann Arbor. “Nearly all institutions have been forced to revise preprocedural protocols, despite a lack of high-level evidence to suggest that these adjustments are necessary.”

“Studies have yielded mixed results as to whether patients on GLP-1s are at increased risk of these events, and the limited data available are inconsistent,” Schulman said. “As a result, there are inconsistencies in the recommendations from various societies leading to growing uncertainty with proceduralists on how to provide safe, effective, and timely procedural care to patients taking GLP-1 RAs.”

The new joint-society guidance may alleviate some of the uncertainty. Among the recommendations:

• Continuing GLP-1 RAs in the perioperative period should be based on shared decision-making with the patient and all care teams balancing the metabolic need for the GLP-1 RA with individual patient risk.
• Certain variables may increase the risk for delayed gastric emptying and aspiration with the periprocedural use of GLP-1 RAs: escalation phase — This phase vs the maintenance phase is associated with a higher risk for delayed gastric emptying; higher dose — the higher the dose, the greater the risk for gastrointestinal (GI) side effects; weekly dosing — GI side effects are more common with weekly vs daily formulations; presence of GI symptoms — nausea, vomiting, abdominal pain, dyspepsia, and constipation may suggest delayed gastric emptying; and medical problems beyond GLP-1 RA indications with GI effects — assess for such conditions as bowel dysmotility, gastroparesis, and Parkinson’s disease.
• Risk factors should be assessed in advance to allow sufficient time to adjust preoperative care, including diet modification and medication bridging if GLP-1 RA cessation is deemed advisable.
• If retained gastric contents are a concern on the day of a procedure, point-of-care gastric ultrasound could be used to assess aspiration risk, resources permitting.
• The aspiration risk from delayed gastric emptying should be minimized by preoperative diet modification and/or altering the anesthesia plan to consider rapid sequence induction of general anesthesia for tracheal intubation. A 24-hour preoperative liquid diet, as before colonoscopy and bariatric surgery, can be utilized when delayed gastric emptying is a concern.
• When concern about retained gastric contents exists on procedure day, providers should engage patients in a shared decision-making model and consider the benefits and risks of rapid-sequence induction of general anesthesia for tracheal intubation to minimize aspiration risk vs procedure cancellation.

“Safe continuation of surgery and gastrointestinal endoscopy, and prevention of procedure cancellation, for patients on GLP-1 RAs can be prioritized following the recommendations above, as would occur for other patient populations with gastroparesis,” the guidance panel wrote.

 

Digestive Health Center of Huntington

Commenting on the statement but not involved in it, David B. Purow, MD, managing director of the Digestive Health Center at Northwell Health/Huntington Hospital in Huntington, New York, said the recommendations will encourage clinicians to be more discerning about actual risk in individual cases rather than follow the previous blanket recommendation to stop these agents before procedures requiring sedation. 

While GLP-1 RAs were prescribed for the relatively small number of patients with diabetes, he said, the risk was not apparent but became clearer with the widespread use of these agents for weight loss — often unregulated and undisclosed to care providers.

“The pendulum shifted too far the other way, and now it’s shifted back,” he said in an interview. “The new guidance is great because now we can be more thoughtful about managing individual patients.” He cited, for instance, the recommendations on the greater risk in patients in the dose escalation phase or on higher doses, and the risk-reducing measure of a liquid diet for 24 hours before surgery.

His center is already using point-of-care ultrasound and recently had a case in which a patient who forgot and took his GLP-1 RA before a scheduled procedure was found on ultrasound to have a full stomach. “In some cases, these drugs can cause an almost gastroparesis level of delayed emptying,” Purow said.

Purow thinks this early guidance will probably progress to firm guidelines within a year. Schulman is more cautious. “Our understanding of this complex topic is increasing rapidly, and ongoing clinical research will ultimately lead to evidence-based guidelines in this changing landscape,” she said.

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. Schulman is a consultant for Apollo Endosurgery, Boston Scientific, Olympus, Microtech, and Fractyl. Purow had no competing interests to declare.

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

PHILADELPHIA — Artificial intelligence–assisted colonoscopy (AIAC) with computer-aided detection (CADe) technology may improve adenoma detection rate (ADR), but it’s also associated with higher detection and removal of non-neoplastic lesions, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

In particular, AIAC led to a statistically and clinically significant increase in the proportion of exams that detected lesions that after resection were all found to be benign, compared with unassisted colonoscopy.

University of Minnesota

“The potential implications include increased procedural risks, as well as costs, such as pathology costs and other healthcare expenditures, without any additional colorectal cancer prevention benefit,” said lead author Tessa Herman, MD, chief resident of internal medicine at the University of Minnesota, Minneapolis, and Minneapolis Veterans Affairs Health Care System.

In a previous implementation trial at the Minneapolis VA Medical Center, Herman and colleagues compared ADR between a group of patients undergoing AIAC and a historical cohort of patients who had non–AI-assisted colonoscopy.

In this subsequent study, the research team conducted an ad hoc analysis of data from the previous trial to determine the proportion of colonoscopies for screening, surveillance, and positive fecal immunochemical tests which detect lesions that after resection are all found to be benign. They excluded colonoscopies conducted for diagnostic indications or inflammatory bowel disease, as well as incomplete colonoscopies, and for those with inadequate bowel preparation.

Overall, they studied 441 non-AIAC colonoscopies (between November 2022 and April 2023) and 599 AIAC colonoscopies (between May 2023 and October 2023). The groups were balanced, and there were no significant differences in patient demographics, endoscopists, AI technology, procedure time, or average number of polyps detected.

In the non-AIAC cohort, 37 cases (8.4%) had polypectomies that revealed only benign lesions, as compared with 74 cases (12.4%) in the AIAC cohort. The most common resected lesions were benign colonic mucosa, lymphoid aggregates, and hyperplastic polyps.

Applied to the 15 million colonoscopies conducted in the United States per year, the findings indicate that full adoption of AIAC could result in about 600,000 more colonoscopies in which only benign, nonadenomatous lesions are removed, compared with traditional colonoscopy, Herman said.

More study of AIAC is needed, said Daniel Pambianco, MD, managing partner of GastroHealth-Charlottesville in Virginia and the 2023 ACG president. “This technology is in a fledging stage, and the more data we have, the more helpful it’ll be to know if we’re removing the right lesions at a better rate.”

“There’s a hope that assistance will improve detection, removal of polyps, and ultimately, colon cancer,” added Pambianco, who comoderated the session on colorectal cancer prevention.

Future longitudinal studies should monitor both ADR and benign lesion resection rates with AIAC, and modeling studies could determine the benefits and costs of the technology, Herman said. In addition, development of hybrid CADe and computer-aided diagnosis systems could mitigate concerns about excessive benign lesion resection with AI tools.

Valley Medical Group

Clinicians already are able to find colon mucosa that are polypoid or lymphoid aggregates during colonoscopy without AI assistance, said the session’s comoderator, Sita Chokhavatia, MD, AGAF, a gastroenterologist with Valley Medical Group in Ridgewood, New Jersey. 

“Instead, we need a tool that can help us to not remove these polyps that are not neoplastic,” she said. “With future developments, we may be able to take it to the next step where the algorithm tells us that it’s benign and not to touch it.”

The study was named an ACG Newsworthy Abstract. Herman, Pambianco, and Chokhavatia reported no relevant disclosures.

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

PHILADELPHIA — Artificial intelligence–assisted colonoscopy (AIAC) with computer-aided detection (CADe) technology may improve adenoma detection rate (ADR), but it’s also associated with higher detection and removal of non-neoplastic lesions, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

In particular, AIAC led to a statistically and clinically significant increase in the proportion of exams that detected lesions that after resection were all found to be benign, compared with unassisted colonoscopy.

University of Minnesota

“The potential implications include increased procedural risks, as well as costs, such as pathology costs and other healthcare expenditures, without any additional colorectal cancer prevention benefit,” said lead author Tessa Herman, MD, chief resident of internal medicine at the University of Minnesota, Minneapolis, and Minneapolis Veterans Affairs Health Care System.

In a previous implementation trial at the Minneapolis VA Medical Center, Herman and colleagues compared ADR between a group of patients undergoing AIAC and a historical cohort of patients who had non–AI-assisted colonoscopy.

In this subsequent study, the research team conducted an ad hoc analysis of data from the previous trial to determine the proportion of colonoscopies for screening, surveillance, and positive fecal immunochemical tests which detect lesions that after resection are all found to be benign. They excluded colonoscopies conducted for diagnostic indications or inflammatory bowel disease, as well as incomplete colonoscopies, and for those with inadequate bowel preparation.

Overall, they studied 441 non-AIAC colonoscopies (between November 2022 and April 2023) and 599 AIAC colonoscopies (between May 2023 and October 2023). The groups were balanced, and there were no significant differences in patient demographics, endoscopists, AI technology, procedure time, or average number of polyps detected.

In the non-AIAC cohort, 37 cases (8.4%) had polypectomies that revealed only benign lesions, as compared with 74 cases (12.4%) in the AIAC cohort. The most common resected lesions were benign colonic mucosa, lymphoid aggregates, and hyperplastic polyps.

Applied to the 15 million colonoscopies conducted in the United States per year, the findings indicate that full adoption of AIAC could result in about 600,000 more colonoscopies in which only benign, nonadenomatous lesions are removed, compared with traditional colonoscopy, Herman said.

More study of AIAC is needed, said Daniel Pambianco, MD, managing partner of GastroHealth-Charlottesville in Virginia and the 2023 ACG president. “This technology is in a fledging stage, and the more data we have, the more helpful it’ll be to know if we’re removing the right lesions at a better rate.”

“There’s a hope that assistance will improve detection, removal of polyps, and ultimately, colon cancer,” added Pambianco, who comoderated the session on colorectal cancer prevention.

Future longitudinal studies should monitor both ADR and benign lesion resection rates with AIAC, and modeling studies could determine the benefits and costs of the technology, Herman said. In addition, development of hybrid CADe and computer-aided diagnosis systems could mitigate concerns about excessive benign lesion resection with AI tools.

Valley Medical Group

Clinicians already are able to find colon mucosa that are polypoid or lymphoid aggregates during colonoscopy without AI assistance, said the session’s comoderator, Sita Chokhavatia, MD, AGAF, a gastroenterologist with Valley Medical Group in Ridgewood, New Jersey. 

“Instead, we need a tool that can help us to not remove these polyps that are not neoplastic,” she said. “With future developments, we may be able to take it to the next step where the algorithm tells us that it’s benign and not to touch it.”

The study was named an ACG Newsworthy Abstract. Herman, Pambianco, and Chokhavatia reported no relevant disclosures.

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

PHILADELPHIA — Artificial intelligence–assisted colonoscopy (AIAC) with computer-aided detection (CADe) technology may improve adenoma detection rate (ADR), but it’s also associated with higher detection and removal of non-neoplastic lesions, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

In particular, AIAC led to a statistically and clinically significant increase in the proportion of exams that detected lesions that after resection were all found to be benign, compared with unassisted colonoscopy.

University of Minnesota

“The potential implications include increased procedural risks, as well as costs, such as pathology costs and other healthcare expenditures, without any additional colorectal cancer prevention benefit,” said lead author Tessa Herman, MD, chief resident of internal medicine at the University of Minnesota, Minneapolis, and Minneapolis Veterans Affairs Health Care System.

In a previous implementation trial at the Minneapolis VA Medical Center, Herman and colleagues compared ADR between a group of patients undergoing AIAC and a historical cohort of patients who had non–AI-assisted colonoscopy.

In this subsequent study, the research team conducted an ad hoc analysis of data from the previous trial to determine the proportion of colonoscopies for screening, surveillance, and positive fecal immunochemical tests which detect lesions that after resection are all found to be benign. They excluded colonoscopies conducted for diagnostic indications or inflammatory bowel disease, as well as incomplete colonoscopies, and for those with inadequate bowel preparation.

Overall, they studied 441 non-AIAC colonoscopies (between November 2022 and April 2023) and 599 AIAC colonoscopies (between May 2023 and October 2023). The groups were balanced, and there were no significant differences in patient demographics, endoscopists, AI technology, procedure time, or average number of polyps detected.

In the non-AIAC cohort, 37 cases (8.4%) had polypectomies that revealed only benign lesions, as compared with 74 cases (12.4%) in the AIAC cohort. The most common resected lesions were benign colonic mucosa, lymphoid aggregates, and hyperplastic polyps.

Applied to the 15 million colonoscopies conducted in the United States per year, the findings indicate that full adoption of AIAC could result in about 600,000 more colonoscopies in which only benign, nonadenomatous lesions are removed, compared with traditional colonoscopy, Herman said.

More study of AIAC is needed, said Daniel Pambianco, MD, managing partner of GastroHealth-Charlottesville in Virginia and the 2023 ACG president. “This technology is in a fledging stage, and the more data we have, the more helpful it’ll be to know if we’re removing the right lesions at a better rate.”

“There’s a hope that assistance will improve detection, removal of polyps, and ultimately, colon cancer,” added Pambianco, who comoderated the session on colorectal cancer prevention.

Future longitudinal studies should monitor both ADR and benign lesion resection rates with AIAC, and modeling studies could determine the benefits and costs of the technology, Herman said. In addition, development of hybrid CADe and computer-aided diagnosis systems could mitigate concerns about excessive benign lesion resection with AI tools.

Valley Medical Group

Clinicians already are able to find colon mucosa that are polypoid or lymphoid aggregates during colonoscopy without AI assistance, said the session’s comoderator, Sita Chokhavatia, MD, AGAF, a gastroenterologist with Valley Medical Group in Ridgewood, New Jersey. 

“Instead, we need a tool that can help us to not remove these polyps that are not neoplastic,” she said. “With future developments, we may be able to take it to the next step where the algorithm tells us that it’s benign and not to touch it.”

The study was named an ACG Newsworthy Abstract. Herman, Pambianco, and Chokhavatia reported no relevant disclosures.

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

PHILADELPHIA — New research challenges the traditional practice of continuing vasoconstrictor therapy for 5 days after endoscopic variceal ligation (EVL) for acute variceal bleeding, finding that a shorter course of 1-3 days may suffice, without raising the risk for rebleeding, if the initial ligation successfully controls bleeding.

“This approach would allow earlier discharge from the hospital and reduce the risk of adverse events, all without sacrificing treatment efficacy or compromising patient safety,” Sushrut Ingawale, MD, MBBS, Quinnipiac University School of Medicine, North Haven, and St. Vincent’s Medical Center, Bridgeport, both in Connecticut, said in a presentation at the annual meeting of the American College of Gastroenterology (ACG).

Ingawale called for a “re-evaluation of existing protocols, emphasizing the potential to update current protocols to reflect shorter, more personalized” duration of vasoconstrictor therapy in these patients.

Rush University Medical Center

Commenting on this research, Nancy Reau, MD, AGAF, of Rush University in Chicago, Illinois, said: “We should always question the standard of care.”

“Vasoconstrictors for 5 days is the standard of care, but this could lead to prolonged hospitalization in patients who are otherwise doing well after endoscopic intervention. Recognizing that a shorter course of vasoconstrictor treatment may have equal outcome is very important though it may not be appropriate for all patients, especially those at high risk for rebleeding,” said Reau.
 

Outdated Guidelines?

In his presentation, Ingawale noted that current guidelines that recommend continuing vasoconstrictors, like octreotide or terlipressin, for at least 3-5 days after EVL for acute variceal bleeding are based primarily on old studies in which sclerotherapy was the primary hemostatic method.

The study team assessed comparative outcomes based on the duration of vasoconstrictors after EVL for acute variceal bleeding in a systematic review and network meta-analysis of 11 randomized controlled trials.

The studies had a total of 816 patients who were grouped based on the duration vasoconstrictor therapy: 24 hours or less (group 1), 24-72 hours (group 2), and 72-120 hours (group 3).

There was no significant difference in the risk for rebleeding in group 1 (risk ratio [RR], 1.36; 95% CI, 0.48-3.52) and group 2 (RR, 1.34; 95% CI, 0.42-4.54) vs group 3.

“This finding was even consistent when we compared individual durations” of 0, 12, 24, 48, and 72 hours vs 120 hours, Ingawale said.

There was also no statistically significant difference in the 5-day mortality risk between group 1 (RR, 0.66; 95% CI, 0.09-2.52) and group 2 (RR, 1.08; 95% CI, 0.15-6.43) or the 30-day mortality risk between group 1 (RR, 1.18; 95% CI, 0.51-2.51) and group 2 (RR, 0.98; 95% CI, 0.36-2.52) vs group 3.
 

Rapidly Evolving Area

“Our network meta-analysis did not show any benefit of continuing vasoconstrictors after EVL,” the researchers wrote in their conference abstract. Despite historical precedent, shorter durations may be adequate, “potentially enabling earlier hospital discharge without compromising patient outcomes.”

Ingawale suggested future research should look to identify the subset of patients at a risk for failure to control bleeding who might benefit from the continuation of vasoconstrictors.

“Management of complications of portal hypertension are rapidly evolving and this study will add to the data that drives our guidelines. Seeing this data in a peer reviewed publication will add the necessary validity to impact a change in the treatment paradigm,” Reau said.

The study had no specific funding. Ingawale had no relevant financial relationships. Reau disclosed various relationships with AbbVie, Gilead, Arbutus, Intercept, and Salix.

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

PHILADELPHIA — New research challenges the traditional practice of continuing vasoconstrictor therapy for 5 days after endoscopic variceal ligation (EVL) for acute variceal bleeding, finding that a shorter course of 1-3 days may suffice, without raising the risk for rebleeding, if the initial ligation successfully controls bleeding.

“This approach would allow earlier discharge from the hospital and reduce the risk of adverse events, all without sacrificing treatment efficacy or compromising patient safety,” Sushrut Ingawale, MD, MBBS, Quinnipiac University School of Medicine, North Haven, and St. Vincent’s Medical Center, Bridgeport, both in Connecticut, said in a presentation at the annual meeting of the American College of Gastroenterology (ACG).

Ingawale called for a “re-evaluation of existing protocols, emphasizing the potential to update current protocols to reflect shorter, more personalized” duration of vasoconstrictor therapy in these patients.

Rush University Medical Center

Commenting on this research, Nancy Reau, MD, AGAF, of Rush University in Chicago, Illinois, said: “We should always question the standard of care.”

“Vasoconstrictors for 5 days is the standard of care, but this could lead to prolonged hospitalization in patients who are otherwise doing well after endoscopic intervention. Recognizing that a shorter course of vasoconstrictor treatment may have equal outcome is very important though it may not be appropriate for all patients, especially those at high risk for rebleeding,” said Reau.
 

Outdated Guidelines?

In his presentation, Ingawale noted that current guidelines that recommend continuing vasoconstrictors, like octreotide or terlipressin, for at least 3-5 days after EVL for acute variceal bleeding are based primarily on old studies in which sclerotherapy was the primary hemostatic method.

The study team assessed comparative outcomes based on the duration of vasoconstrictors after EVL for acute variceal bleeding in a systematic review and network meta-analysis of 11 randomized controlled trials.

The studies had a total of 816 patients who were grouped based on the duration vasoconstrictor therapy: 24 hours or less (group 1), 24-72 hours (group 2), and 72-120 hours (group 3).

There was no significant difference in the risk for rebleeding in group 1 (risk ratio [RR], 1.36; 95% CI, 0.48-3.52) and group 2 (RR, 1.34; 95% CI, 0.42-4.54) vs group 3.

“This finding was even consistent when we compared individual durations” of 0, 12, 24, 48, and 72 hours vs 120 hours, Ingawale said.

There was also no statistically significant difference in the 5-day mortality risk between group 1 (RR, 0.66; 95% CI, 0.09-2.52) and group 2 (RR, 1.08; 95% CI, 0.15-6.43) or the 30-day mortality risk between group 1 (RR, 1.18; 95% CI, 0.51-2.51) and group 2 (RR, 0.98; 95% CI, 0.36-2.52) vs group 3.
 

Rapidly Evolving Area

“Our network meta-analysis did not show any benefit of continuing vasoconstrictors after EVL,” the researchers wrote in their conference abstract. Despite historical precedent, shorter durations may be adequate, “potentially enabling earlier hospital discharge without compromising patient outcomes.”

Ingawale suggested future research should look to identify the subset of patients at a risk for failure to control bleeding who might benefit from the continuation of vasoconstrictors.

“Management of complications of portal hypertension are rapidly evolving and this study will add to the data that drives our guidelines. Seeing this data in a peer reviewed publication will add the necessary validity to impact a change in the treatment paradigm,” Reau said.

The study had no specific funding. Ingawale had no relevant financial relationships. Reau disclosed various relationships with AbbVie, Gilead, Arbutus, Intercept, and Salix.

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

PHILADELPHIA — New research challenges the traditional practice of continuing vasoconstrictor therapy for 5 days after endoscopic variceal ligation (EVL) for acute variceal bleeding, finding that a shorter course of 1-3 days may suffice, without raising the risk for rebleeding, if the initial ligation successfully controls bleeding.

“This approach would allow earlier discharge from the hospital and reduce the risk of adverse events, all without sacrificing treatment efficacy or compromising patient safety,” Sushrut Ingawale, MD, MBBS, Quinnipiac University School of Medicine, North Haven, and St. Vincent’s Medical Center, Bridgeport, both in Connecticut, said in a presentation at the annual meeting of the American College of Gastroenterology (ACG).

Ingawale called for a “re-evaluation of existing protocols, emphasizing the potential to update current protocols to reflect shorter, more personalized” duration of vasoconstrictor therapy in these patients.

Rush University Medical Center

Commenting on this research, Nancy Reau, MD, AGAF, of Rush University in Chicago, Illinois, said: “We should always question the standard of care.”

“Vasoconstrictors for 5 days is the standard of care, but this could lead to prolonged hospitalization in patients who are otherwise doing well after endoscopic intervention. Recognizing that a shorter course of vasoconstrictor treatment may have equal outcome is very important though it may not be appropriate for all patients, especially those at high risk for rebleeding,” said Reau.
 

Outdated Guidelines?

In his presentation, Ingawale noted that current guidelines that recommend continuing vasoconstrictors, like octreotide or terlipressin, for at least 3-5 days after EVL for acute variceal bleeding are based primarily on old studies in which sclerotherapy was the primary hemostatic method.

The study team assessed comparative outcomes based on the duration of vasoconstrictors after EVL for acute variceal bleeding in a systematic review and network meta-analysis of 11 randomized controlled trials.

The studies had a total of 816 patients who were grouped based on the duration vasoconstrictor therapy: 24 hours or less (group 1), 24-72 hours (group 2), and 72-120 hours (group 3).

There was no significant difference in the risk for rebleeding in group 1 (risk ratio [RR], 1.36; 95% CI, 0.48-3.52) and group 2 (RR, 1.34; 95% CI, 0.42-4.54) vs group 3.

“This finding was even consistent when we compared individual durations” of 0, 12, 24, 48, and 72 hours vs 120 hours, Ingawale said.

There was also no statistically significant difference in the 5-day mortality risk between group 1 (RR, 0.66; 95% CI, 0.09-2.52) and group 2 (RR, 1.08; 95% CI, 0.15-6.43) or the 30-day mortality risk between group 1 (RR, 1.18; 95% CI, 0.51-2.51) and group 2 (RR, 0.98; 95% CI, 0.36-2.52) vs group 3.
 

Rapidly Evolving Area

“Our network meta-analysis did not show any benefit of continuing vasoconstrictors after EVL,” the researchers wrote in their conference abstract. Despite historical precedent, shorter durations may be adequate, “potentially enabling earlier hospital discharge without compromising patient outcomes.”

Ingawale suggested future research should look to identify the subset of patients at a risk for failure to control bleeding who might benefit from the continuation of vasoconstrictors.

“Management of complications of portal hypertension are rapidly evolving and this study will add to the data that drives our guidelines. Seeing this data in a peer reviewed publication will add the necessary validity to impact a change in the treatment paradigm,” Reau said.

The study had no specific funding. Ingawale had no relevant financial relationships. Reau disclosed various relationships with AbbVie, Gilead, Arbutus, Intercept, and Salix.

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

PHILADELPHIA — Roux-en-Y gastric bypass (RYGB) produces maximal weight loss in patients with obesity, compared with other surgical procedures and with weight loss drugs, according to a meta-analysis comparing the efficacy and safety of the different treatment options. 

However, tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 receptor agonist (GLP-1 RA), produces comparable weight loss and has a favorable safety profile, reported principal investigator Jena Velji-Ibrahim, MD, MSc, from Prisma Health–Upstate/University of South Carolina School of Medicine in Greenville. 

In addition, there was “no significant difference in percentage total body weight loss between tirzepatide when comparing it to one-anastomosis gastric bypass (OAGB), as well as laparoscopic sleeve gastrectomy,” she said. 

All 11 interventions studied exerted weight loss effects, and side-effect profiles were also deemed largely favorable, particularly for endoscopic interventions, she added. 

“When we compare bariatric surgery to bariatric endoscopy, endoscopic sleeve gastroplasty and transpyloric shuttle offer a minimally invasive alternative with good weight loss outcomes and fewer adverse events,” she said.

Velji-Ibrahim presented the findings at the annual meeting of the American College of Gastroenterology (ACG). 
 

Comparing Weight Loss Interventions

Many of the studies comparing weight loss interventions to date have been limited by relatively small sample sizes, observational designs, and inconsistent results. This prompted Velji-Ibrahim and her colleagues to conduct what they believe to be the first-of-its-kind meta-analysis on this topic. 

They began by conducting a systematic search of the literature to identify randomized controlled trials (RCTs) that compared the efficacy of Food and Drug Administration–approved bariatric surgeries, bariatric endoscopies, and medications — against each other or with placebo — in adults with a body mass index of 25-45, with or without concurrent type 2 diabetes. 

A network meta-analysis was then performed to assess the various interventions’ impact on percentage total weight loss and side-effect profiles. P-scores were calculated to rank the treatments and identify the preferred interventions. The duration of therapy was 52 weeks. 

In total, 34 eligible RCTs with 15,660 patients were included. Overall, the RCTs analyzed 11 weight loss treatments, including bariatric surgeries (four studies), bariatric endoscopies (three studies), and medications (four studies). 

Specifically, the bariatric surgeries included RYGB, laparoscopic sleeve gastrectomy, OAGB, and laparoscopic adjustable gastric banding; bariatric endoscopies included endoscopic sleeve gastroplasty, transpyloric shuttle, and intragastric balloon; and medications included tirzepatide, semaglutide, and liraglutide.

Although all interventions were associated with reductions in percentage total weight loss compared with placebo, RYGB led to the greatest reductions (19.29%) and was ranked as the first preferred treatment (97% probability). It was followed in the rankings by OAGB, tirzepatide 15 mg, laparoscopic sleeve gastrectomy, and semaglutide 2.4 mg. 

Tirzepatide 15 mg had a slightly lower percentage total weight loss (15.18%) but a favorable safety profile. There was no significant difference in percentage total weight loss between tirzepatide 15 mg and OAGB (mean difference, 2.97%) or laparoscopic sleeve gastrectomy (mean difference, 0.43%). 

There was also no significant difference in percentage total weight loss between semaglutide 2.4 mg, compared with endoscopic sleeve gastroplasty and transpyloric shuttle. 

Endoscopic sleeve, transpyloric shuttle, and intragastric balloon all resulted in weight loss > 5%. 

When compared with bariatric surgery, “endoscopic interventions had a better side-effect profile, with no increased odds of mortality and intensive care needs,” Velji-Ibrahim said. 

When it came to the medications, “the most common side effects were gastrointestinal in nature, which included nausea, vomiting, diarrhea, and constipation,” she said.
 

Combining, Rather Than Comparing, Therapies

Following the presentation, session co-moderator Shivangi T. Kothari, MD, assistant professor of medicine and associate director of endoscopy at the University of Rochester Medical Center in New York, shared her thoughts of what the future of obesity management research might look like. 

It’s not just going to be about percentage total weight loss, she said, but about how well the effect is sustained following the intervention. 

And we might move “away from comparing one modality to another” and instead study combination therapies, “which would be ideal,” said Kothari.

This was the focus of another meta-analysis presented at ACG 2024, in which Nihal Ijaz I. Khan, MD, and colleagues compared the efficacy of endoscopic bariatric treatment alone vs its combined use with GLP-1 RAs.

The researchers identified three retrospective studies with 266 patients, of whom 143 underwent endoscopic bariatric treatment alone (either endoscopic sleeve gastroplasty or intragastric balloon) and 123 had it combined with GLP-1 RAs, specifically liraglutide. 

They reported that superior absolute weight loss was achieved in the group of patients receiving GLP-1 RAs in combination with endoscopic bariatric treatment. The standardized mean difference in body weight loss at treatment follow-up was 0.61 (P <.01). 

“Further studies are required to evaluate the safety and adverse events comparing these two treatment modalities and to discover differences between comparing the two endoscopic options to various GLP-1 receptor agonists,” Khan noted. 

Neither study had specific funding. Velji-Ibrahim and Khan reported no relevant financial relationships. Kothari reported serving as a consultant for Boston Scientific and Olympus, as well as serving as an advisory committee/board member for Castle Biosciences.

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

PHILADELPHIA — Roux-en-Y gastric bypass (RYGB) produces maximal weight loss in patients with obesity, compared with other surgical procedures and with weight loss drugs, according to a meta-analysis comparing the efficacy and safety of the different treatment options. 

However, tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 receptor agonist (GLP-1 RA), produces comparable weight loss and has a favorable safety profile, reported principal investigator Jena Velji-Ibrahim, MD, MSc, from Prisma Health–Upstate/University of South Carolina School of Medicine in Greenville. 

In addition, there was “no significant difference in percentage total body weight loss between tirzepatide when comparing it to one-anastomosis gastric bypass (OAGB), as well as laparoscopic sleeve gastrectomy,” she said. 

All 11 interventions studied exerted weight loss effects, and side-effect profiles were also deemed largely favorable, particularly for endoscopic interventions, she added. 

“When we compare bariatric surgery to bariatric endoscopy, endoscopic sleeve gastroplasty and transpyloric shuttle offer a minimally invasive alternative with good weight loss outcomes and fewer adverse events,” she said.

Velji-Ibrahim presented the findings at the annual meeting of the American College of Gastroenterology (ACG). 
 

Comparing Weight Loss Interventions

Many of the studies comparing weight loss interventions to date have been limited by relatively small sample sizes, observational designs, and inconsistent results. This prompted Velji-Ibrahim and her colleagues to conduct what they believe to be the first-of-its-kind meta-analysis on this topic. 

They began by conducting a systematic search of the literature to identify randomized controlled trials (RCTs) that compared the efficacy of Food and Drug Administration–approved bariatric surgeries, bariatric endoscopies, and medications — against each other or with placebo — in adults with a body mass index of 25-45, with or without concurrent type 2 diabetes. 

A network meta-analysis was then performed to assess the various interventions’ impact on percentage total weight loss and side-effect profiles. P-scores were calculated to rank the treatments and identify the preferred interventions. The duration of therapy was 52 weeks. 

In total, 34 eligible RCTs with 15,660 patients were included. Overall, the RCTs analyzed 11 weight loss treatments, including bariatric surgeries (four studies), bariatric endoscopies (three studies), and medications (four studies). 

Specifically, the bariatric surgeries included RYGB, laparoscopic sleeve gastrectomy, OAGB, and laparoscopic adjustable gastric banding; bariatric endoscopies included endoscopic sleeve gastroplasty, transpyloric shuttle, and intragastric balloon; and medications included tirzepatide, semaglutide, and liraglutide.

Although all interventions were associated with reductions in percentage total weight loss compared with placebo, RYGB led to the greatest reductions (19.29%) and was ranked as the first preferred treatment (97% probability). It was followed in the rankings by OAGB, tirzepatide 15 mg, laparoscopic sleeve gastrectomy, and semaglutide 2.4 mg. 

Tirzepatide 15 mg had a slightly lower percentage total weight loss (15.18%) but a favorable safety profile. There was no significant difference in percentage total weight loss between tirzepatide 15 mg and OAGB (mean difference, 2.97%) or laparoscopic sleeve gastrectomy (mean difference, 0.43%). 

There was also no significant difference in percentage total weight loss between semaglutide 2.4 mg, compared with endoscopic sleeve gastroplasty and transpyloric shuttle. 

Endoscopic sleeve, transpyloric shuttle, and intragastric balloon all resulted in weight loss > 5%. 

When compared with bariatric surgery, “endoscopic interventions had a better side-effect profile, with no increased odds of mortality and intensive care needs,” Velji-Ibrahim said. 

When it came to the medications, “the most common side effects were gastrointestinal in nature, which included nausea, vomiting, diarrhea, and constipation,” she said.
 

Combining, Rather Than Comparing, Therapies

Following the presentation, session co-moderator Shivangi T. Kothari, MD, assistant professor of medicine and associate director of endoscopy at the University of Rochester Medical Center in New York, shared her thoughts of what the future of obesity management research might look like. 

It’s not just going to be about percentage total weight loss, she said, but about how well the effect is sustained following the intervention. 

And we might move “away from comparing one modality to another” and instead study combination therapies, “which would be ideal,” said Kothari.

This was the focus of another meta-analysis presented at ACG 2024, in which Nihal Ijaz I. Khan, MD, and colleagues compared the efficacy of endoscopic bariatric treatment alone vs its combined use with GLP-1 RAs.

The researchers identified three retrospective studies with 266 patients, of whom 143 underwent endoscopic bariatric treatment alone (either endoscopic sleeve gastroplasty or intragastric balloon) and 123 had it combined with GLP-1 RAs, specifically liraglutide. 

They reported that superior absolute weight loss was achieved in the group of patients receiving GLP-1 RAs in combination with endoscopic bariatric treatment. The standardized mean difference in body weight loss at treatment follow-up was 0.61 (P <.01). 

“Further studies are required to evaluate the safety and adverse events comparing these two treatment modalities and to discover differences between comparing the two endoscopic options to various GLP-1 receptor agonists,” Khan noted. 

Neither study had specific funding. Velji-Ibrahim and Khan reported no relevant financial relationships. Kothari reported serving as a consultant for Boston Scientific and Olympus, as well as serving as an advisory committee/board member for Castle Biosciences.

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

PHILADELPHIA — Roux-en-Y gastric bypass (RYGB) produces maximal weight loss in patients with obesity, compared with other surgical procedures and with weight loss drugs, according to a meta-analysis comparing the efficacy and safety of the different treatment options. 

However, tirzepatide, a long-acting glucose-dependent insulinotropic polypeptide (GIP) receptor agonist and glucagon-like peptide 1 receptor agonist (GLP-1 RA), produces comparable weight loss and has a favorable safety profile, reported principal investigator Jena Velji-Ibrahim, MD, MSc, from Prisma Health–Upstate/University of South Carolina School of Medicine in Greenville. 

In addition, there was “no significant difference in percentage total body weight loss between tirzepatide when comparing it to one-anastomosis gastric bypass (OAGB), as well as laparoscopic sleeve gastrectomy,” she said. 

All 11 interventions studied exerted weight loss effects, and side-effect profiles were also deemed largely favorable, particularly for endoscopic interventions, she added. 

“When we compare bariatric surgery to bariatric endoscopy, endoscopic sleeve gastroplasty and transpyloric shuttle offer a minimally invasive alternative with good weight loss outcomes and fewer adverse events,” she said.

Velji-Ibrahim presented the findings at the annual meeting of the American College of Gastroenterology (ACG). 
 

Comparing Weight Loss Interventions

Many of the studies comparing weight loss interventions to date have been limited by relatively small sample sizes, observational designs, and inconsistent results. This prompted Velji-Ibrahim and her colleagues to conduct what they believe to be the first-of-its-kind meta-analysis on this topic. 

They began by conducting a systematic search of the literature to identify randomized controlled trials (RCTs) that compared the efficacy of Food and Drug Administration–approved bariatric surgeries, bariatric endoscopies, and medications — against each other or with placebo — in adults with a body mass index of 25-45, with or without concurrent type 2 diabetes. 

A network meta-analysis was then performed to assess the various interventions’ impact on percentage total weight loss and side-effect profiles. P-scores were calculated to rank the treatments and identify the preferred interventions. The duration of therapy was 52 weeks. 

In total, 34 eligible RCTs with 15,660 patients were included. Overall, the RCTs analyzed 11 weight loss treatments, including bariatric surgeries (four studies), bariatric endoscopies (three studies), and medications (four studies). 

Specifically, the bariatric surgeries included RYGB, laparoscopic sleeve gastrectomy, OAGB, and laparoscopic adjustable gastric banding; bariatric endoscopies included endoscopic sleeve gastroplasty, transpyloric shuttle, and intragastric balloon; and medications included tirzepatide, semaglutide, and liraglutide.

Although all interventions were associated with reductions in percentage total weight loss compared with placebo, RYGB led to the greatest reductions (19.29%) and was ranked as the first preferred treatment (97% probability). It was followed in the rankings by OAGB, tirzepatide 15 mg, laparoscopic sleeve gastrectomy, and semaglutide 2.4 mg. 

Tirzepatide 15 mg had a slightly lower percentage total weight loss (15.18%) but a favorable safety profile. There was no significant difference in percentage total weight loss between tirzepatide 15 mg and OAGB (mean difference, 2.97%) or laparoscopic sleeve gastrectomy (mean difference, 0.43%). 

There was also no significant difference in percentage total weight loss between semaglutide 2.4 mg, compared with endoscopic sleeve gastroplasty and transpyloric shuttle. 

Endoscopic sleeve, transpyloric shuttle, and intragastric balloon all resulted in weight loss > 5%. 

When compared with bariatric surgery, “endoscopic interventions had a better side-effect profile, with no increased odds of mortality and intensive care needs,” Velji-Ibrahim said. 

When it came to the medications, “the most common side effects were gastrointestinal in nature, which included nausea, vomiting, diarrhea, and constipation,” she said.
 

Combining, Rather Than Comparing, Therapies

Following the presentation, session co-moderator Shivangi T. Kothari, MD, assistant professor of medicine and associate director of endoscopy at the University of Rochester Medical Center in New York, shared her thoughts of what the future of obesity management research might look like. 

It’s not just going to be about percentage total weight loss, she said, but about how well the effect is sustained following the intervention. 

And we might move “away from comparing one modality to another” and instead study combination therapies, “which would be ideal,” said Kothari.

This was the focus of another meta-analysis presented at ACG 2024, in which Nihal Ijaz I. Khan, MD, and colleagues compared the efficacy of endoscopic bariatric treatment alone vs its combined use with GLP-1 RAs.

The researchers identified three retrospective studies with 266 patients, of whom 143 underwent endoscopic bariatric treatment alone (either endoscopic sleeve gastroplasty or intragastric balloon) and 123 had it combined with GLP-1 RAs, specifically liraglutide. 

They reported that superior absolute weight loss was achieved in the group of patients receiving GLP-1 RAs in combination with endoscopic bariatric treatment. The standardized mean difference in body weight loss at treatment follow-up was 0.61 (P <.01). 

“Further studies are required to evaluate the safety and adverse events comparing these two treatment modalities and to discover differences between comparing the two endoscopic options to various GLP-1 receptor agonists,” Khan noted. 

Neither study had specific funding. Velji-Ibrahim and Khan reported no relevant financial relationships. Kothari reported serving as a consultant for Boston Scientific and Olympus, as well as serving as an advisory committee/board member for Castle Biosciences.

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

Introduction

Gastroesophageal reflux disease (GERD) is a frequently encountered condition, and rising annually.¹ A recent meta-analysis suggests nearly 14% (1.03 billion) of the population are affected worldwide. Differences may range by region from 12% in Latin America to 20% in North America, and by country from 4% in China to 23% in Turkey.¹ In the United States, 21% of the population are afflicted with weekly GERD symptoms.² Novel medical therapies and endoscopic options provide clinicians with opportunities to help patients with GERD.³Herein, we review diagnostics as well as the evolution of medical, endoscopic and basic surgical management for GERD.

Diagnosis

Definition

courtesy University of Southern California

GERD was originally defined by the Montreal consensus as a condition that develops when the reflux of stomach contents causes troublesome symptoms and/or complications.⁴ Heartburn and regurgitation are common symptoms of GERD, with a sensitivity of 30%-76% and specificity of 62%-96% for erosive esophagitis (EE), which occurs when the reflux of stomach content causes esophageal mucosal breaks.⁵ The presence of characteristic mucosal injury observed during an upper endoscopy or abnormal esophageal acid exposure on ambulatory reflux monitoring are objective evidence of GERD. A trial of a proton pump inhibitor (PPI) may function as a diagnostic test for patients exhibiting the typical symptoms of GERD without any alarm symptoms.^3,6

Endoscopic Evaluation and Confirmation

The 2022 American Gastroenterological Association (AGA) clinical practice update recommends diagnostic endoscopy, after PPIs are stopped for 2-4 weeks, in patients whose GERD symptoms do not respond adequately to an empiric trial of a PPI.³ Those with GERD and alarm symptoms such as dysphagia, weight loss, bleeding, and vomiting should undergo endoscopy as soon as possible. Endoscopic findings of EE (Los Angeles Grade B or more severe) and long-segment Barrett’s esophagus (> 3-cm segment with intestinal metaplasia on biopsy) are diagnostic of GERD.³

Reflux Monitoring

courtesy University of Southern California

With ambulatory reflux monitoring (pH or impedance-pH), esophageal acid exposure (or neutral refluxate in impedance testing) can be measured to confirm GERD diagnosis and to correlate symptoms with reflux episodes. Patients with atypical GERD symptoms or patients with a confirmed diagnosis of GERD whose symptoms have not improved sufficiently with twice-daily PPI therapy should have esophageal impedance-pH monitoring while on PPIs.^6,7

Esophageal Manometry

High-resolution esophageal manometry can be used to assess motility abnormalities associated with GERD.

Although no manometric abnormality is unique to GERD, weak lower esophageal sphincter (LES) resting pressure and ineffective esophageal motility frequently coexist with severe GERD.⁶

Manometry is particularly useful in patients considering surgical or endoscopic anti-reflux procedures to evaluate for achalasia,³ an important contraindication to surgery.
 

Medical Management

courtesy University of Southern California

Management of GERD requires a multidisciplinary and personalized approach based on symptom presentation, body mass index, endoscopic findings (e.g., presence of EE, Barrett’s esophagus, hiatal hernia), and physiological abnormalities (e.g., gastroparesis or ineffective motility).³

Lifestyle Modifications

Recommended lifestyle modifications include weight loss for patients with obesity, stress reduction, tobacco and alcohol cessation, elevating the head of the bed, staying upright during and after meals, avoidance of food intake < 3 hours before bedtime, and cessation of foods that potentially aggravate reflux symptoms such as coffee, chocolate, carbonated beverages, spicy foods, acidic foods, and foods with high fat content.^6,8

Medications

Pharmacologic therapy for GERD includes medications that primarily aim to neutralize or reduce gastric acid -- we summarize options in Table 1.^3,8

MDedge News

Proton Pump Inhibitors

Most guidelines suggest a trial of 4-8 weeks of once-daily enteric-coated PPI before meals in patients with typical GERD symptoms and no alarm symptoms. Escalation to double-dose PPI may be considered in the case of persistent symptoms. The relative potencies of standard-dose pantoprazole, lansoprazole, esomeprazole, and rabeprazole are presented in Table 1.⁹ When a PPI switch is needed, rabeprazole may be considered as it is a PPI that does not rely on CYP2C19 for primary metabolism.⁹

Acid suppression should be weaned down to the lowest effective dose or converted to H2RAs or other antacids once symptoms are sufficiently controlled unless patients have EE, Barrett’s esophagus, or peptic stricture.³ Patients with severe GERD may require long-term PPI therapy or an invasive anti-reflux procedure.

Recent studies have shown that potassium-competitive acid blockers (PCAB) like vonoprazan may offer more effective gastric acid inhibition. While not included in the latest clinical practice update, vonoprazan is thought to be superior to lansoprazole for those with LA Grade C/D esophagitis for both symptom relief and healing at 2 weeks.¹⁰

Adjunctive Therapies

Alginates can function as a physical barrier to even neutral reflux and may be helpful for patients with postprandial or nighttime symptoms as well as those with hiatal hernia.³ H2RAs can also help mitigate nighttime symptoms.³ Baclofen is a gamma-aminobutyric acid–B agonist which inhibits transient lower esophageal sphincter relaxation (TLESR) and may be effective for patients with belching.³ Prokinetics may be helpful for GERD with concomitant gastroparesis^.3 Sucralfate is a mucosal protective agent, but there is a lack of data supporting its efficacy in GERD treatment. Consider referral to a behavioral therapist for supplemental therapies, hypnotherapy, cognitive-behavior therapy, diaphragmatic breathing, and relaxation strategies for functional heartburn or reflux-associated esophageal hypervigilance or reflux hypersensitivity.³

When to Refer to Higher Level of Care

For patients who do not wish to remain on longer-term pharmacologic therapy or would benefit from anatomic repair, clinicians should have a discussion of risks and benefits prior to consideration of referral for anti-reflux procedures.^3,6,8 We advise this conversation should include review of patient health status, postsurgical side effects such as increased flatus, bloating and dysphagia as well as the potential need to still resume PPI post operation.⁸

Endoscopic Management

Patient Selection And Evaluation

For the groups indicated for a higher level of care, we agree with AGA recommendations, multi-society guidelines, and expert review,^3,7,11,12 and highlight potential options in Table 2. Step-up options should be based on patient characteristics and reviewed carefully with patients. Endoscopic therapies are less invasive than surgery and may be considered for those who do not require anatomic repair of hiatal hernia, do not want surgery, or are not suitable for surgery.

MDedge News

The pathophysiology of GERD is from a loss of the anti-reflux barrier of the esophageal gastric junction (EGJ) at the lower esophageal sphincter (LES) leading to unintended retrograde movement of gastric contents.⁶ Anatomically, the LES is composed of muscles of the distal esophagus and sling fibers of the proximal stomach, the “external valve” from the diaphragmatic crura, and the “internal valve” from the gastroesophageal flap valve (GEFV). GERD occurs from mechanical failure of the LES. First, there may be disproportional dilation of the diaphragmatic crura as categorized by Hill Grade of the GEFV as seen by a retroflexed view of EGJ after 30-45 seconds of insufflation.¹³ Second, there may be a migration of the LES away from the diaphragmatic crura as in the case of a hiatal hernia. Provocative maneuvers may reveal a sliding hernia by gentle retraction of the endoscope while under retroflexed view.¹³ Third, there may be more frequent TLESR associated with GERD.¹²

The aim of most interventions is to restore competency of the LES by reconstruction of the GEFV via suture or staple-based approximation of tissue.^11,12 Intraluminal therapy may only target the GEFV at the internal valve. Therefore, most endoscopic interventions are limited to patients with intact diaphragmatic crura (ie, small to no hiatal hernia and GEFV Hill Grade 1 to 2). Contraindications for endoscopic therapy are moderate to severe reflux (ie, LA Grade C/ D), hiatus hernia 2 cm or larger, strictures, or long-segment Barrett’s esophagus.
 

Utility, Safety, and Outcomes of TIF

Historically, endoscopic therapy targeting endoscopic fundoplication started with EndoLuminal gastro-gastric fundoplication (ELF, 2005) which was a proof of concept of safe manipulation and suture for gastro-gastric plication to below the Z-line. Transoral incisionless fundoplication (TIF) 1.0 was suggested in 2007 for clinical application by proposing a longitudinal oriented esophago-gastric plication 1 cm above the Z-line.

In 2009, TIF2.0 was proposed as a rotational 270° wrap of the cardia and fundus to a full-thickness esophago-gastric fundoplication around 2-4 cm of the distal esophagus. Like a surgical fundoplication, this reinforces sling fibers, increases the Angle of His and improves the cardiac notch. TIF 2.0 is indicated for those with small (< 2 cm) or no hiatal hernia and a GEFV Hill Grade 1 or 2. The present iteration of TIF2.0 uses EsophyX-Z (EndoGastric Solutions; Redmond, Washington) which features dual fastener deployment and a simplified firing mechanism. Plication is secured via nonresorbable polypropylene T-fasteners with strength equivalence of 3-0 sutures.

Compared with the original, TIF2.0 represents a decrease of severe adverse events from 2%-2.5% to 0.4%-1%.^11,14 Based on longitudinal TEMPO data, patient satisfaction ranges between 70% and 90% and rates of patients reverting to daily PPI use are 17% and 34% at 1 and 5 years. A 5% reintervention rate was noted to be comparable with surgical reoperation for fundoplication.¹⁵ One retrospective evaluation of patients with failed TIF followed by successful cTIF noted that in all failures there was a documented underestimation of a much larger crura defect at time of index procedure.¹⁶ Chest pain is common post procedure and patients and collaborating providers should be counseled on the expected course. In our practice, we admit patients for at least 1 postprocedure day and consider scheduling symptom control medications for those with significant pain.
 

TIF2.0 for Special Populations

Indications for TIF2.0 continue to evolve. In 2017, concomitant TIF2.0 with hiatal hernia repair (cTIF or HH-TIF) for hernia > 2 cm was accepted for expanded use. In one study, cTIF has been shown to have similar outcomes for postprocedural PPI use, dysphagia, wrap disruption, and hiatal hernia recurrence, compared with hiatal hernia repair paired with laparoscopic Nissen fundoplication with possibly shorter postadmission stay, serious adverse events, and bloating.¹⁷ A cTIF may be performed in a single general anesthetic session typically with a surgical hiatal hernia repair followed by TIF2.0.

Other Endoscopic Procedures

Several other endoscopic interventions have been proposed for GERD management. The following procedures are under continuous study and should be considered only by those with expertise.
 

Stretta

The Stretta device (Restech; Houston, Texas) was approved in 2000 for use of a radiofrequency (RF) generator and catheter applied to the squamocolumnar junction under irrigation. Ideal candidates for this nonablative procedure may include patients with confirmed GERD, low-grade EE, without Barrett’s esophagus, small hiatal hernia, and a competent LES with pressure > 5 mmHg. Meta-analysis has yielded conflicting results in terms of its efficacy, compared with TIF2.0, and recent multi-society guidance suggests fundoplication over Stretta.⁷

ARM, MASE, and RAP

Anti-reflux mucosectomy (ARM) has been proposed based on the observation that patients undergoing mucosectomy for neoplasms in the cardia had improvement of reflux symptoms.^11,12 Systematic review has suggested a clinical response of 80% of either PPI discontinuation or reduction, but 17% of adverse events include development of strictures. Iterations of ARM continue to be studied including ARM with band ligation (L-ARM) and endoscopic submucosal dissection for GERD (ESD-G).¹²

Experts have proposed incorporating endoscopic suturing of the EGJ to modulate the LES. Mucosal ablation and suturing of the EG junction (MASE) has been proposed by first priming tissue via argon plasma coagulation (APC) prior to endoscopic overstitch of two to three interrupted sutures below the EGJ to narrow and elongate the EGJ. The resection and plication (RAP) procedure performs a mucosal resection prior to full-thickness plication of the LES and cardia.^11,12 Expert opinion has suggested that RAP may be used in patients with altered anatomy whereas MASE may be used when resection is not possible (eg, prior scarring, resection or ablation).¹²
 

Surgical Management

We agree with a recent multi-society guideline recommending that an interdisciplinary consultation with surgery for indicated patients with refractory GERD and underlying hiatal hernia, or who do not want lifelong medical therapy.

Fundoplication creates a surgical wrap to reinforce the LES and may be performed laparoscopically. Contraindications include body mass index (BMI) >35 kg/m2 and significantly impaired dysmotility. Fundoplication of 180°, 270°, and 360° may achieve comparable outcomes, but a laparoscopic toupet fundoplication (LTF 270°) may have fewer postsurgical issues of dysphagia and bloating. Advantages for both anterior and posterior partial fundoplications have been demonstrated by network meta-analysis. Therefore, a multi-society guideline for GERD suggests partial over complete fundoplication.⁷ Compared with posterior techniques, anterior fundoplication (Watson fundoplication) led to more recurrent reflux symptoms but less dysphagia and other side effects.¹⁹

Magnetic sphincter augmentation (MSA) is a surgical option that strengthens the LES with magnets to improve sphincter competence. In addition to listed contraindications of fundoplication, patients with an allergy to nickel and/or titanium are also contraindicated to receive MSA.⁷ MSA has been suggested to be equivalent to LNF although there may be less gas bloat and greater ability to belch on follow up.²⁰
 

Surgical Options for Special Populations

Patients with medically refractory GERD and a BMI ≥ 35 kg/m² may benefit from either Roux-en-Y gastric bypass (RYGB) or fundoplication, however sleeve gastrectomy is not advised.⁷ In patients with BMI > 50 kg/m2, RYGB may provide an optimal choice. We agree with consultation with a bariatric surgeon when reviewing these situations.

Conclusion

Patients with GERD are commonly encountered worldwide. Empiric PPI are effective mainstays for medical treatment of GERD. Novel PCABs (e.g., vonoprazan) may present new options for GERD with LA Grade C/D esophagitis EE and merit more study. In refractory cases or for patients who do not want long term medical therapy, step-up therapy may be considered via endoscopic or surgical interventions. Patient anatomy and comorbidities should be considered by the clinician to inform treatment options. Surgery may have the most durable outcomes for those requiring step-up therapy. Improvements in technique, devices and patient selection have allowed TIF2.0 to grow as a viable offering with excellent 5-year outcomes for indicated patients.

Dr. Chang, Dr. Tintara, and Dr. Phan are based in the Division of Gastrointestinal and Liver Disease at the University of Southern California in Los Angeles. They have no conflicts of interest to declare.

References

1. Richter JE andRubenstein JH. Gastroenterology. 2018 Jan. doi: 10.1053/j.gastro.2017.07.045.

2. El-Serag HB et al. Gut. 2014 Jun. doi: 10.1136/gutjnl-2012-304269.

3. Yadlapati R et al. Clin Gastroenterol Hepatol. 2022 May. doi: 10.1016/j.cgh.2022.01.025.

4. Vakil N et al. Am J Gastroenterol. 2006 Aug. doi: 10.1111/j.1572-0241.2006.00630.x.

5. Numans ME et al. Ann Intern Med. 2004 Apr. doi: 10.7326/0003-4819-140-7-200404060-00011.

6. Kahrilas PJ et al. Gastroenterology. 2008 Oct. doi: 10.1053/j.gastro.2008.08.045.

7. Slater BJ et al. Surg Endosc. 2023 Feb. doi: 10.1007/s00464-022-09817-3.

8. Gyawali CP et al. Gut. 2018 Jul. doi:10.1136/gutjnl-2017-314722.

9. Graham DY and Tansel A. Clin Gastroenterol Hepatol. 2018 Jun. doi: 10.1016/j.cgh.2017.09.033.

10. Graham DY and Dore MP. Gastroenterology. 2018 Feb. doi:10.1053/j.gastro.2018.01.018.

11. Haseeb M and Thompson CC. Curr Opin Gastroenterol. 2023 Sep. doi: 10.1097/MOG.0000000000000968.

12. Kolb JM and Chang KJ. Curr Opin Gastroenterol. 2023 Jul. doi:10.1097/MOG.0000000000000944.

13. Nguyen NT et al. Foregut. 2022 Sep. doi: 10.1177/26345161221126961.

14. Mazzoleni G et al. Endosc Int Open. 2021 Feb. doi: 10.1055/a-1322-2209.

15. Trad KS et al. Surg Innov. 2018 Apr. doi: 10.1177/1553350618755214.

16. Kolb JM et al. Gastroenterology. 2021 May. doi: 10.1016/S0016-5085(21)02953-X.

17. Jaruvongvanich VK et al. Endosc Int Open. 2023 Jan. doi: 10.1055/a-1972-9190.

18. Lee Y et al. Surg Endosc. 2023 Jul. doi: 10.1007/s00464-023-10151-5.

19. Andreou A et al. Surg Endosc. 2020 Feb. doi: 10.1007/s00464-019-07208-9.

20. Guidozzi N et al. Dis Esophagus. 2019 Nov. doi: 10.1093/dote/doz031.

Introduction

Gastroesophageal reflux disease (GERD) is a frequently encountered condition, and rising annually.¹ A recent meta-analysis suggests nearly 14% (1.03 billion) of the population are affected worldwide. Differences may range by region from 12% in Latin America to 20% in North America, and by country from 4% in China to 23% in Turkey.¹ In the United States, 21% of the population are afflicted with weekly GERD symptoms.² Novel medical therapies and endoscopic options provide clinicians with opportunities to help patients with GERD.³Herein, we review diagnostics as well as the evolution of medical, endoscopic and basic surgical management for GERD.

Diagnosis

Definition

courtesy University of Southern California

GERD was originally defined by the Montreal consensus as a condition that develops when the reflux of stomach contents causes troublesome symptoms and/or complications.⁴ Heartburn and regurgitation are common symptoms of GERD, with a sensitivity of 30%-76% and specificity of 62%-96% for erosive esophagitis (EE), which occurs when the reflux of stomach content causes esophageal mucosal breaks.⁵ The presence of characteristic mucosal injury observed during an upper endoscopy or abnormal esophageal acid exposure on ambulatory reflux monitoring are objective evidence of GERD. A trial of a proton pump inhibitor (PPI) may function as a diagnostic test for patients exhibiting the typical symptoms of GERD without any alarm symptoms.^3,6

Endoscopic Evaluation and Confirmation

The 2022 American Gastroenterological Association (AGA) clinical practice update recommends diagnostic endoscopy, after PPIs are stopped for 2-4 weeks, in patients whose GERD symptoms do not respond adequately to an empiric trial of a PPI.³ Those with GERD and alarm symptoms such as dysphagia, weight loss, bleeding, and vomiting should undergo endoscopy as soon as possible. Endoscopic findings of EE (Los Angeles Grade B or more severe) and long-segment Barrett’s esophagus (> 3-cm segment with intestinal metaplasia on biopsy) are diagnostic of GERD.³

Reflux Monitoring

courtesy University of Southern California

With ambulatory reflux monitoring (pH or impedance-pH), esophageal acid exposure (or neutral refluxate in impedance testing) can be measured to confirm GERD diagnosis and to correlate symptoms with reflux episodes. Patients with atypical GERD symptoms or patients with a confirmed diagnosis of GERD whose symptoms have not improved sufficiently with twice-daily PPI therapy should have esophageal impedance-pH monitoring while on PPIs.^6,7

Esophageal Manometry

High-resolution esophageal manometry can be used to assess motility abnormalities associated with GERD.

Although no manometric abnormality is unique to GERD, weak lower esophageal sphincter (LES) resting pressure and ineffective esophageal motility frequently coexist with severe GERD.⁶

Manometry is particularly useful in patients considering surgical or endoscopic anti-reflux procedures to evaluate for achalasia,³ an important contraindication to surgery.
 

Medical Management

courtesy University of Southern California

Management of GERD requires a multidisciplinary and personalized approach based on symptom presentation, body mass index, endoscopic findings (e.g., presence of EE, Barrett’s esophagus, hiatal hernia), and physiological abnormalities (e.g., gastroparesis or ineffective motility).³

Lifestyle Modifications

Recommended lifestyle modifications include weight loss for patients with obesity, stress reduction, tobacco and alcohol cessation, elevating the head of the bed, staying upright during and after meals, avoidance of food intake < 3 hours before bedtime, and cessation of foods that potentially aggravate reflux symptoms such as coffee, chocolate, carbonated beverages, spicy foods, acidic foods, and foods with high fat content.^6,8

Medications

Pharmacologic therapy for GERD includes medications that primarily aim to neutralize or reduce gastric acid -- we summarize options in Table 1.^3,8

MDedge News

Proton Pump Inhibitors

Most guidelines suggest a trial of 4-8 weeks of once-daily enteric-coated PPI before meals in patients with typical GERD symptoms and no alarm symptoms. Escalation to double-dose PPI may be considered in the case of persistent symptoms. The relative potencies of standard-dose pantoprazole, lansoprazole, esomeprazole, and rabeprazole are presented in Table 1.⁹ When a PPI switch is needed, rabeprazole may be considered as it is a PPI that does not rely on CYP2C19 for primary metabolism.⁹

Acid suppression should be weaned down to the lowest effective dose or converted to H2RAs or other antacids once symptoms are sufficiently controlled unless patients have EE, Barrett’s esophagus, or peptic stricture.³ Patients with severe GERD may require long-term PPI therapy or an invasive anti-reflux procedure.

Recent studies have shown that potassium-competitive acid blockers (PCAB) like vonoprazan may offer more effective gastric acid inhibition. While not included in the latest clinical practice update, vonoprazan is thought to be superior to lansoprazole for those with LA Grade C/D esophagitis for both symptom relief and healing at 2 weeks.¹⁰

Adjunctive Therapies

Alginates can function as a physical barrier to even neutral reflux and may be helpful for patients with postprandial or nighttime symptoms as well as those with hiatal hernia.³ H2RAs can also help mitigate nighttime symptoms.³ Baclofen is a gamma-aminobutyric acid–B agonist which inhibits transient lower esophageal sphincter relaxation (TLESR) and may be effective for patients with belching.³ Prokinetics may be helpful for GERD with concomitant gastroparesis^.3 Sucralfate is a mucosal protective agent, but there is a lack of data supporting its efficacy in GERD treatment. Consider referral to a behavioral therapist for supplemental therapies, hypnotherapy, cognitive-behavior therapy, diaphragmatic breathing, and relaxation strategies for functional heartburn or reflux-associated esophageal hypervigilance or reflux hypersensitivity.³

When to Refer to Higher Level of Care

For patients who do not wish to remain on longer-term pharmacologic therapy or would benefit from anatomic repair, clinicians should have a discussion of risks and benefits prior to consideration of referral for anti-reflux procedures.^3,6,8 We advise this conversation should include review of patient health status, postsurgical side effects such as increased flatus, bloating and dysphagia as well as the potential need to still resume PPI post operation.⁸

Endoscopic Management

Patient Selection And Evaluation

For the groups indicated for a higher level of care, we agree with AGA recommendations, multi-society guidelines, and expert review,^3,7,11,12 and highlight potential options in Table 2. Step-up options should be based on patient characteristics and reviewed carefully with patients. Endoscopic therapies are less invasive than surgery and may be considered for those who do not require anatomic repair of hiatal hernia, do not want surgery, or are not suitable for surgery.

MDedge News

The pathophysiology of GERD is from a loss of the anti-reflux barrier of the esophageal gastric junction (EGJ) at the lower esophageal sphincter (LES) leading to unintended retrograde movement of gastric contents.⁶ Anatomically, the LES is composed of muscles of the distal esophagus and sling fibers of the proximal stomach, the “external valve” from the diaphragmatic crura, and the “internal valve” from the gastroesophageal flap valve (GEFV). GERD occurs from mechanical failure of the LES. First, there may be disproportional dilation of the diaphragmatic crura as categorized by Hill Grade of the GEFV as seen by a retroflexed view of EGJ after 30-45 seconds of insufflation.¹³ Second, there may be a migration of the LES away from the diaphragmatic crura as in the case of a hiatal hernia. Provocative maneuvers may reveal a sliding hernia by gentle retraction of the endoscope while under retroflexed view.¹³ Third, there may be more frequent TLESR associated with GERD.¹²

The aim of most interventions is to restore competency of the LES by reconstruction of the GEFV via suture or staple-based approximation of tissue.^11,12 Intraluminal therapy may only target the GEFV at the internal valve. Therefore, most endoscopic interventions are limited to patients with intact diaphragmatic crura (ie, small to no hiatal hernia and GEFV Hill Grade 1 to 2). Contraindications for endoscopic therapy are moderate to severe reflux (ie, LA Grade C/ D), hiatus hernia 2 cm or larger, strictures, or long-segment Barrett’s esophagus.
 

Utility, Safety, and Outcomes of TIF

Historically, endoscopic therapy targeting endoscopic fundoplication started with EndoLuminal gastro-gastric fundoplication (ELF, 2005) which was a proof of concept of safe manipulation and suture for gastro-gastric plication to below the Z-line. Transoral incisionless fundoplication (TIF) 1.0 was suggested in 2007 for clinical application by proposing a longitudinal oriented esophago-gastric plication 1 cm above the Z-line.

In 2009, TIF2.0 was proposed as a rotational 270° wrap of the cardia and fundus to a full-thickness esophago-gastric fundoplication around 2-4 cm of the distal esophagus. Like a surgical fundoplication, this reinforces sling fibers, increases the Angle of His and improves the cardiac notch. TIF 2.0 is indicated for those with small (< 2 cm) or no hiatal hernia and a GEFV Hill Grade 1 or 2. The present iteration of TIF2.0 uses EsophyX-Z (EndoGastric Solutions; Redmond, Washington) which features dual fastener deployment and a simplified firing mechanism. Plication is secured via nonresorbable polypropylene T-fasteners with strength equivalence of 3-0 sutures.

Compared with the original, TIF2.0 represents a decrease of severe adverse events from 2%-2.5% to 0.4%-1%.^11,14 Based on longitudinal TEMPO data, patient satisfaction ranges between 70% and 90% and rates of patients reverting to daily PPI use are 17% and 34% at 1 and 5 years. A 5% reintervention rate was noted to be comparable with surgical reoperation for fundoplication.¹⁵ One retrospective evaluation of patients with failed TIF followed by successful cTIF noted that in all failures there was a documented underestimation of a much larger crura defect at time of index procedure.¹⁶ Chest pain is common post procedure and patients and collaborating providers should be counseled on the expected course. In our practice, we admit patients for at least 1 postprocedure day and consider scheduling symptom control medications for those with significant pain.
 

TIF2.0 for Special Populations

Indications for TIF2.0 continue to evolve. In 2017, concomitant TIF2.0 with hiatal hernia repair (cTIF or HH-TIF) for hernia > 2 cm was accepted for expanded use. In one study, cTIF has been shown to have similar outcomes for postprocedural PPI use, dysphagia, wrap disruption, and hiatal hernia recurrence, compared with hiatal hernia repair paired with laparoscopic Nissen fundoplication with possibly shorter postadmission stay, serious adverse events, and bloating.¹⁷ A cTIF may be performed in a single general anesthetic session typically with a surgical hiatal hernia repair followed by TIF2.0.

Other Endoscopic Procedures

Several other endoscopic interventions have been proposed for GERD management. The following procedures are under continuous study and should be considered only by those with expertise.
 

Stretta

The Stretta device (Restech; Houston, Texas) was approved in 2000 for use of a radiofrequency (RF) generator and catheter applied to the squamocolumnar junction under irrigation. Ideal candidates for this nonablative procedure may include patients with confirmed GERD, low-grade EE, without Barrett’s esophagus, small hiatal hernia, and a competent LES with pressure > 5 mmHg. Meta-analysis has yielded conflicting results in terms of its efficacy, compared with TIF2.0, and recent multi-society guidance suggests fundoplication over Stretta.⁷

ARM, MASE, and RAP

Anti-reflux mucosectomy (ARM) has been proposed based on the observation that patients undergoing mucosectomy for neoplasms in the cardia had improvement of reflux symptoms.^11,12 Systematic review has suggested a clinical response of 80% of either PPI discontinuation or reduction, but 17% of adverse events include development of strictures. Iterations of ARM continue to be studied including ARM with band ligation (L-ARM) and endoscopic submucosal dissection for GERD (ESD-G).¹²

Experts have proposed incorporating endoscopic suturing of the EGJ to modulate the LES. Mucosal ablation and suturing of the EG junction (MASE) has been proposed by first priming tissue via argon plasma coagulation (APC) prior to endoscopic overstitch of two to three interrupted sutures below the EGJ to narrow and elongate the EGJ. The resection and plication (RAP) procedure performs a mucosal resection prior to full-thickness plication of the LES and cardia.^11,12 Expert opinion has suggested that RAP may be used in patients with altered anatomy whereas MASE may be used when resection is not possible (eg, prior scarring, resection or ablation).¹²
 

Surgical Management

We agree with a recent multi-society guideline recommending that an interdisciplinary consultation with surgery for indicated patients with refractory GERD and underlying hiatal hernia, or who do not want lifelong medical therapy.

Fundoplication creates a surgical wrap to reinforce the LES and may be performed laparoscopically. Contraindications include body mass index (BMI) >35 kg/m2 and significantly impaired dysmotility. Fundoplication of 180°, 270°, and 360° may achieve comparable outcomes, but a laparoscopic toupet fundoplication (LTF 270°) may have fewer postsurgical issues of dysphagia and bloating. Advantages for both anterior and posterior partial fundoplications have been demonstrated by network meta-analysis. Therefore, a multi-society guideline for GERD suggests partial over complete fundoplication.⁷ Compared with posterior techniques, anterior fundoplication (Watson fundoplication) led to more recurrent reflux symptoms but less dysphagia and other side effects.¹⁹

Magnetic sphincter augmentation (MSA) is a surgical option that strengthens the LES with magnets to improve sphincter competence. In addition to listed contraindications of fundoplication, patients with an allergy to nickel and/or titanium are also contraindicated to receive MSA.⁷ MSA has been suggested to be equivalent to LNF although there may be less gas bloat and greater ability to belch on follow up.²⁰
 

Surgical Options for Special Populations

Patients with medically refractory GERD and a BMI ≥ 35 kg/m² may benefit from either Roux-en-Y gastric bypass (RYGB) or fundoplication, however sleeve gastrectomy is not advised.⁷ In patients with BMI > 50 kg/m2, RYGB may provide an optimal choice. We agree with consultation with a bariatric surgeon when reviewing these situations.

Conclusion

Patients with GERD are commonly encountered worldwide. Empiric PPI are effective mainstays for medical treatment of GERD. Novel PCABs (e.g., vonoprazan) may present new options for GERD with LA Grade C/D esophagitis EE and merit more study. In refractory cases or for patients who do not want long term medical therapy, step-up therapy may be considered via endoscopic or surgical interventions. Patient anatomy and comorbidities should be considered by the clinician to inform treatment options. Surgery may have the most durable outcomes for those requiring step-up therapy. Improvements in technique, devices and patient selection have allowed TIF2.0 to grow as a viable offering with excellent 5-year outcomes for indicated patients.

Dr. Chang, Dr. Tintara, and Dr. Phan are based in the Division of Gastrointestinal and Liver Disease at the University of Southern California in Los Angeles. They have no conflicts of interest to declare.

References

1. Richter JE andRubenstein JH. Gastroenterology. 2018 Jan. doi: 10.1053/j.gastro.2017.07.045.

2. El-Serag HB et al. Gut. 2014 Jun. doi: 10.1136/gutjnl-2012-304269.

3. Yadlapati R et al. Clin Gastroenterol Hepatol. 2022 May. doi: 10.1016/j.cgh.2022.01.025.

4. Vakil N et al. Am J Gastroenterol. 2006 Aug. doi: 10.1111/j.1572-0241.2006.00630.x.

5. Numans ME et al. Ann Intern Med. 2004 Apr. doi: 10.7326/0003-4819-140-7-200404060-00011.

6. Kahrilas PJ et al. Gastroenterology. 2008 Oct. doi: 10.1053/j.gastro.2008.08.045.

7. Slater BJ et al. Surg Endosc. 2023 Feb. doi: 10.1007/s00464-022-09817-3.

8. Gyawali CP et al. Gut. 2018 Jul. doi:10.1136/gutjnl-2017-314722.

9. Graham DY and Tansel A. Clin Gastroenterol Hepatol. 2018 Jun. doi: 10.1016/j.cgh.2017.09.033.

10. Graham DY and Dore MP. Gastroenterology. 2018 Feb. doi:10.1053/j.gastro.2018.01.018.

11. Haseeb M and Thompson CC. Curr Opin Gastroenterol. 2023 Sep. doi: 10.1097/MOG.0000000000000968.

12. Kolb JM and Chang KJ. Curr Opin Gastroenterol. 2023 Jul. doi:10.1097/MOG.0000000000000944.

13. Nguyen NT et al. Foregut. 2022 Sep. doi: 10.1177/26345161221126961.

14. Mazzoleni G et al. Endosc Int Open. 2021 Feb. doi: 10.1055/a-1322-2209.

15. Trad KS et al. Surg Innov. 2018 Apr. doi: 10.1177/1553350618755214.

16. Kolb JM et al. Gastroenterology. 2021 May. doi: 10.1016/S0016-5085(21)02953-X.

17. Jaruvongvanich VK et al. Endosc Int Open. 2023 Jan. doi: 10.1055/a-1972-9190.

18. Lee Y et al. Surg Endosc. 2023 Jul. doi: 10.1007/s00464-023-10151-5.

19. Andreou A et al. Surg Endosc. 2020 Feb. doi: 10.1007/s00464-019-07208-9.

20. Guidozzi N et al. Dis Esophagus. 2019 Nov. doi: 10.1093/dote/doz031.

Introduction

Gastroesophageal reflux disease (GERD) is a frequently encountered condition, and rising annually.¹ A recent meta-analysis suggests nearly 14% (1.03 billion) of the population are affected worldwide. Differences may range by region from 12% in Latin America to 20% in North America, and by country from 4% in China to 23% in Turkey.¹ In the United States, 21% of the population are afflicted with weekly GERD symptoms.² Novel medical therapies and endoscopic options provide clinicians with opportunities to help patients with GERD.³Herein, we review diagnostics as well as the evolution of medical, endoscopic and basic surgical management for GERD.

Diagnosis

Definition

courtesy University of Southern California

GERD was originally defined by the Montreal consensus as a condition that develops when the reflux of stomach contents causes troublesome symptoms and/or complications.⁴ Heartburn and regurgitation are common symptoms of GERD, with a sensitivity of 30%-76% and specificity of 62%-96% for erosive esophagitis (EE), which occurs when the reflux of stomach content causes esophageal mucosal breaks.⁵ The presence of characteristic mucosal injury observed during an upper endoscopy or abnormal esophageal acid exposure on ambulatory reflux monitoring are objective evidence of GERD. A trial of a proton pump inhibitor (PPI) may function as a diagnostic test for patients exhibiting the typical symptoms of GERD without any alarm symptoms.^3,6

Endoscopic Evaluation and Confirmation

The 2022 American Gastroenterological Association (AGA) clinical practice update recommends diagnostic endoscopy, after PPIs are stopped for 2-4 weeks, in patients whose GERD symptoms do not respond adequately to an empiric trial of a PPI.³ Those with GERD and alarm symptoms such as dysphagia, weight loss, bleeding, and vomiting should undergo endoscopy as soon as possible. Endoscopic findings of EE (Los Angeles Grade B or more severe) and long-segment Barrett’s esophagus (> 3-cm segment with intestinal metaplasia on biopsy) are diagnostic of GERD.³

Reflux Monitoring

courtesy University of Southern California

With ambulatory reflux monitoring (pH or impedance-pH), esophageal acid exposure (or neutral refluxate in impedance testing) can be measured to confirm GERD diagnosis and to correlate symptoms with reflux episodes. Patients with atypical GERD symptoms or patients with a confirmed diagnosis of GERD whose symptoms have not improved sufficiently with twice-daily PPI therapy should have esophageal impedance-pH monitoring while on PPIs.^6,7

Esophageal Manometry

High-resolution esophageal manometry can be used to assess motility abnormalities associated with GERD.

Although no manometric abnormality is unique to GERD, weak lower esophageal sphincter (LES) resting pressure and ineffective esophageal motility frequently coexist with severe GERD.⁶

Manometry is particularly useful in patients considering surgical or endoscopic anti-reflux procedures to evaluate for achalasia,³ an important contraindication to surgery.
 

Medical Management

courtesy University of Southern California

Management of GERD requires a multidisciplinary and personalized approach based on symptom presentation, body mass index, endoscopic findings (e.g., presence of EE, Barrett’s esophagus, hiatal hernia), and physiological abnormalities (e.g., gastroparesis or ineffective motility).³

Lifestyle Modifications

Recommended lifestyle modifications include weight loss for patients with obesity, stress reduction, tobacco and alcohol cessation, elevating the head of the bed, staying upright during and after meals, avoidance of food intake < 3 hours before bedtime, and cessation of foods that potentially aggravate reflux symptoms such as coffee, chocolate, carbonated beverages, spicy foods, acidic foods, and foods with high fat content.^6,8

Medications

Pharmacologic therapy for GERD includes medications that primarily aim to neutralize or reduce gastric acid -- we summarize options in Table 1.^3,8

MDedge News

Proton Pump Inhibitors

Most guidelines suggest a trial of 4-8 weeks of once-daily enteric-coated PPI before meals in patients with typical GERD symptoms and no alarm symptoms. Escalation to double-dose PPI may be considered in the case of persistent symptoms. The relative potencies of standard-dose pantoprazole, lansoprazole, esomeprazole, and rabeprazole are presented in Table 1.⁹ When a PPI switch is needed, rabeprazole may be considered as it is a PPI that does not rely on CYP2C19 for primary metabolism.⁹

Acid suppression should be weaned down to the lowest effective dose or converted to H2RAs or other antacids once symptoms are sufficiently controlled unless patients have EE, Barrett’s esophagus, or peptic stricture.³ Patients with severe GERD may require long-term PPI therapy or an invasive anti-reflux procedure.

Recent studies have shown that potassium-competitive acid blockers (PCAB) like vonoprazan may offer more effective gastric acid inhibition. While not included in the latest clinical practice update, vonoprazan is thought to be superior to lansoprazole for those with LA Grade C/D esophagitis for both symptom relief and healing at 2 weeks.¹⁰

Adjunctive Therapies

Alginates can function as a physical barrier to even neutral reflux and may be helpful for patients with postprandial or nighttime symptoms as well as those with hiatal hernia.³ H2RAs can also help mitigate nighttime symptoms.³ Baclofen is a gamma-aminobutyric acid–B agonist which inhibits transient lower esophageal sphincter relaxation (TLESR) and may be effective for patients with belching.³ Prokinetics may be helpful for GERD with concomitant gastroparesis^.3 Sucralfate is a mucosal protective agent, but there is a lack of data supporting its efficacy in GERD treatment. Consider referral to a behavioral therapist for supplemental therapies, hypnotherapy, cognitive-behavior therapy, diaphragmatic breathing, and relaxation strategies for functional heartburn or reflux-associated esophageal hypervigilance or reflux hypersensitivity.³

When to Refer to Higher Level of Care

For patients who do not wish to remain on longer-term pharmacologic therapy or would benefit from anatomic repair, clinicians should have a discussion of risks and benefits prior to consideration of referral for anti-reflux procedures.^3,6,8 We advise this conversation should include review of patient health status, postsurgical side effects such as increased flatus, bloating and dysphagia as well as the potential need to still resume PPI post operation.⁸

Endoscopic Management

Patient Selection And Evaluation

For the groups indicated for a higher level of care, we agree with AGA recommendations, multi-society guidelines, and expert review,^3,7,11,12 and highlight potential options in Table 2. Step-up options should be based on patient characteristics and reviewed carefully with patients. Endoscopic therapies are less invasive than surgery and may be considered for those who do not require anatomic repair of hiatal hernia, do not want surgery, or are not suitable for surgery.

MDedge News

The pathophysiology of GERD is from a loss of the anti-reflux barrier of the esophageal gastric junction (EGJ) at the lower esophageal sphincter (LES) leading to unintended retrograde movement of gastric contents.⁶ Anatomically, the LES is composed of muscles of the distal esophagus and sling fibers of the proximal stomach, the “external valve” from the diaphragmatic crura, and the “internal valve” from the gastroesophageal flap valve (GEFV). GERD occurs from mechanical failure of the LES. First, there may be disproportional dilation of the diaphragmatic crura as categorized by Hill Grade of the GEFV as seen by a retroflexed view of EGJ after 30-45 seconds of insufflation.¹³ Second, there may be a migration of the LES away from the diaphragmatic crura as in the case of a hiatal hernia. Provocative maneuvers may reveal a sliding hernia by gentle retraction of the endoscope while under retroflexed view.¹³ Third, there may be more frequent TLESR associated with GERD.¹²

The aim of most interventions is to restore competency of the LES by reconstruction of the GEFV via suture or staple-based approximation of tissue.^11,12 Intraluminal therapy may only target the GEFV at the internal valve. Therefore, most endoscopic interventions are limited to patients with intact diaphragmatic crura (ie, small to no hiatal hernia and GEFV Hill Grade 1 to 2). Contraindications for endoscopic therapy are moderate to severe reflux (ie, LA Grade C/ D), hiatus hernia 2 cm or larger, strictures, or long-segment Barrett’s esophagus.
 

Utility, Safety, and Outcomes of TIF

Historically, endoscopic therapy targeting endoscopic fundoplication started with EndoLuminal gastro-gastric fundoplication (ELF, 2005) which was a proof of concept of safe manipulation and suture for gastro-gastric plication to below the Z-line. Transoral incisionless fundoplication (TIF) 1.0 was suggested in 2007 for clinical application by proposing a longitudinal oriented esophago-gastric plication 1 cm above the Z-line.

In 2009, TIF2.0 was proposed as a rotational 270° wrap of the cardia and fundus to a full-thickness esophago-gastric fundoplication around 2-4 cm of the distal esophagus. Like a surgical fundoplication, this reinforces sling fibers, increases the Angle of His and improves the cardiac notch. TIF 2.0 is indicated for those with small (< 2 cm) or no hiatal hernia and a GEFV Hill Grade 1 or 2. The present iteration of TIF2.0 uses EsophyX-Z (EndoGastric Solutions; Redmond, Washington) which features dual fastener deployment and a simplified firing mechanism. Plication is secured via nonresorbable polypropylene T-fasteners with strength equivalence of 3-0 sutures.

Compared with the original, TIF2.0 represents a decrease of severe adverse events from 2%-2.5% to 0.4%-1%.^11,14 Based on longitudinal TEMPO data, patient satisfaction ranges between 70% and 90% and rates of patients reverting to daily PPI use are 17% and 34% at 1 and 5 years. A 5% reintervention rate was noted to be comparable with surgical reoperation for fundoplication.¹⁵ One retrospective evaluation of patients with failed TIF followed by successful cTIF noted that in all failures there was a documented underestimation of a much larger crura defect at time of index procedure.¹⁶ Chest pain is common post procedure and patients and collaborating providers should be counseled on the expected course. In our practice, we admit patients for at least 1 postprocedure day and consider scheduling symptom control medications for those with significant pain.
 

TIF2.0 for Special Populations

Indications for TIF2.0 continue to evolve. In 2017, concomitant TIF2.0 with hiatal hernia repair (cTIF or HH-TIF) for hernia > 2 cm was accepted for expanded use. In one study, cTIF has been shown to have similar outcomes for postprocedural PPI use, dysphagia, wrap disruption, and hiatal hernia recurrence, compared with hiatal hernia repair paired with laparoscopic Nissen fundoplication with possibly shorter postadmission stay, serious adverse events, and bloating.¹⁷ A cTIF may be performed in a single general anesthetic session typically with a surgical hiatal hernia repair followed by TIF2.0.

Other Endoscopic Procedures

Several other endoscopic interventions have been proposed for GERD management. The following procedures are under continuous study and should be considered only by those with expertise.
 

Stretta

The Stretta device (Restech; Houston, Texas) was approved in 2000 for use of a radiofrequency (RF) generator and catheter applied to the squamocolumnar junction under irrigation. Ideal candidates for this nonablative procedure may include patients with confirmed GERD, low-grade EE, without Barrett’s esophagus, small hiatal hernia, and a competent LES with pressure > 5 mmHg. Meta-analysis has yielded conflicting results in terms of its efficacy, compared with TIF2.0, and recent multi-society guidance suggests fundoplication over Stretta.⁷

ARM, MASE, and RAP

Anti-reflux mucosectomy (ARM) has been proposed based on the observation that patients undergoing mucosectomy for neoplasms in the cardia had improvement of reflux symptoms.^11,12 Systematic review has suggested a clinical response of 80% of either PPI discontinuation or reduction, but 17% of adverse events include development of strictures. Iterations of ARM continue to be studied including ARM with band ligation (L-ARM) and endoscopic submucosal dissection for GERD (ESD-G).¹²

Experts have proposed incorporating endoscopic suturing of the EGJ to modulate the LES. Mucosal ablation and suturing of the EG junction (MASE) has been proposed by first priming tissue via argon plasma coagulation (APC) prior to endoscopic overstitch of two to three interrupted sutures below the EGJ to narrow and elongate the EGJ. The resection and plication (RAP) procedure performs a mucosal resection prior to full-thickness plication of the LES and cardia.^11,12 Expert opinion has suggested that RAP may be used in patients with altered anatomy whereas MASE may be used when resection is not possible (eg, prior scarring, resection or ablation).¹²
 

Surgical Management

We agree with a recent multi-society guideline recommending that an interdisciplinary consultation with surgery for indicated patients with refractory GERD and underlying hiatal hernia, or who do not want lifelong medical therapy.

Fundoplication creates a surgical wrap to reinforce the LES and may be performed laparoscopically. Contraindications include body mass index (BMI) >35 kg/m2 and significantly impaired dysmotility. Fundoplication of 180°, 270°, and 360° may achieve comparable outcomes, but a laparoscopic toupet fundoplication (LTF 270°) may have fewer postsurgical issues of dysphagia and bloating. Advantages for both anterior and posterior partial fundoplications have been demonstrated by network meta-analysis. Therefore, a multi-society guideline for GERD suggests partial over complete fundoplication.⁷ Compared with posterior techniques, anterior fundoplication (Watson fundoplication) led to more recurrent reflux symptoms but less dysphagia and other side effects.¹⁹

Magnetic sphincter augmentation (MSA) is a surgical option that strengthens the LES with magnets to improve sphincter competence. In addition to listed contraindications of fundoplication, patients with an allergy to nickel and/or titanium are also contraindicated to receive MSA.⁷ MSA has been suggested to be equivalent to LNF although there may be less gas bloat and greater ability to belch on follow up.²⁰
 

Surgical Options for Special Populations

Patients with medically refractory GERD and a BMI ≥ 35 kg/m² may benefit from either Roux-en-Y gastric bypass (RYGB) or fundoplication, however sleeve gastrectomy is not advised.⁷ In patients with BMI > 50 kg/m2, RYGB may provide an optimal choice. We agree with consultation with a bariatric surgeon when reviewing these situations.

Conclusion

Patients with GERD are commonly encountered worldwide. Empiric PPI are effective mainstays for medical treatment of GERD. Novel PCABs (e.g., vonoprazan) may present new options for GERD with LA Grade C/D esophagitis EE and merit more study. In refractory cases or for patients who do not want long term medical therapy, step-up therapy may be considered via endoscopic or surgical interventions. Patient anatomy and comorbidities should be considered by the clinician to inform treatment options. Surgery may have the most durable outcomes for those requiring step-up therapy. Improvements in technique, devices and patient selection have allowed TIF2.0 to grow as a viable offering with excellent 5-year outcomes for indicated patients.

Dr. Chang, Dr. Tintara, and Dr. Phan are based in the Division of Gastrointestinal and Liver Disease at the University of Southern California in Los Angeles. They have no conflicts of interest to declare.

References

1. Richter JE andRubenstein JH. Gastroenterology. 2018 Jan. doi: 10.1053/j.gastro.2017.07.045.

2. El-Serag HB et al. Gut. 2014 Jun. doi: 10.1136/gutjnl-2012-304269.

3. Yadlapati R et al. Clin Gastroenterol Hepatol. 2022 May. doi: 10.1016/j.cgh.2022.01.025.

4. Vakil N et al. Am J Gastroenterol. 2006 Aug. doi: 10.1111/j.1572-0241.2006.00630.x.

5. Numans ME et al. Ann Intern Med. 2004 Apr. doi: 10.7326/0003-4819-140-7-200404060-00011.

6. Kahrilas PJ et al. Gastroenterology. 2008 Oct. doi: 10.1053/j.gastro.2008.08.045.

7. Slater BJ et al. Surg Endosc. 2023 Feb. doi: 10.1007/s00464-022-09817-3.

8. Gyawali CP et al. Gut. 2018 Jul. doi:10.1136/gutjnl-2017-314722.

9. Graham DY and Tansel A. Clin Gastroenterol Hepatol. 2018 Jun. doi: 10.1016/j.cgh.2017.09.033.

10. Graham DY and Dore MP. Gastroenterology. 2018 Feb. doi:10.1053/j.gastro.2018.01.018.

11. Haseeb M and Thompson CC. Curr Opin Gastroenterol. 2023 Sep. doi: 10.1097/MOG.0000000000000968.

12. Kolb JM and Chang KJ. Curr Opin Gastroenterol. 2023 Jul. doi:10.1097/MOG.0000000000000944.

13. Nguyen NT et al. Foregut. 2022 Sep. doi: 10.1177/26345161221126961.

14. Mazzoleni G et al. Endosc Int Open. 2021 Feb. doi: 10.1055/a-1322-2209.

15. Trad KS et al. Surg Innov. 2018 Apr. doi: 10.1177/1553350618755214.

16. Kolb JM et al. Gastroenterology. 2021 May. doi: 10.1016/S0016-5085(21)02953-X.

17. Jaruvongvanich VK et al. Endosc Int Open. 2023 Jan. doi: 10.1055/a-1972-9190.

18. Lee Y et al. Surg Endosc. 2023 Jul. doi: 10.1007/s00464-023-10151-5.

19. Andreou A et al. Surg Endosc. 2020 Feb. doi: 10.1007/s00464-019-07208-9.

20. Guidozzi N et al. Dis Esophagus. 2019 Nov. doi: 10.1093/dote/doz031.

PHILADELPHIA — Low-volume bowel preparation is noninferior in adequacy to standard-volume prep in hospitalized patients undergoing colonoscopy, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

Patients who received MoviPrep (2L of polyethylene glycol and ascorbic acid) reported higher tolerability and willingness to repeat colonoscopy preparation in the future than those taking GoLYTELY (4L of polyethylene glycol and electrolytes). In addition, the rates of electrolyte abnormalities and acute kidney injury were low and similar between the two groups.

Yale School of Medicine

“Bowel preparation remains a challenge in the inpatient setting, where 20%-50% of all colonoscopies can have inadequate bowel preparation,” said lead author Karen Xiao, MD, assistant professor in the section of digestive diseases at Yale School of Medicine, New Haven, Connecticut.

Previous studies have indicated that low-volume (2L), split-dose preparations are noninferior to high-volume (4L), split-dose regimens, and patients generally prefer low-volume options, she said. However, the current standard of care for inpatients continues to include high-volume polyethylene glycol electrocyte lavage, which may be less tolerable.

“Similar to prior studies, our study supports that MoviPrep may be a suitable alternative to traditional high-volume bowel preparation in hospitalized patients undergoing colonoscopy,” she said.

In a single-blind, multi-site, randomized controlled trial, Xiao and colleagues in the Yale–New Haven Health System randomly assigned inpatients undergoing colonoscopy to MoviPrep or GoLYTELY between January 2022 and July 2024. They excluded patients with prior small or large bowel resection, foreign body removal, or medical contraindications, such as obstruction, pregnancy, phenylketonuria, or glucose-6-phosphate dehydrogenase deficiency.

After bowel prep but before colonoscopy, patients took the Mayo Clinic Bowel Preparation survey. Colonoscopies were then recorded, and videos were scored by a single-blinded central reviewer. The primary outcome included the adequacy of bowel prep as defined by a Boston Bowel Preparation Scale score of 6 or higher, with each segment scoring 2 or higher.

In the final analysis, 202 patients received MoviPrep and 210 received GoLYTELY. In both groups, the average age was 62; about 60% were men; and 66% were White, about 22% Black, and 13%-15% Hispanic. About 65% of patients in both arms had an American Society of Anesthesiologists (ASA) score of 3, with another 20% in each group having an ASA score of 4, “reflective of a sicker inpatient population,” Xiao said.

Inpatient colonoscopy was indicated for gastrointestinal bleeding (55%), diarrhea (15%-20%), abnormal imaging (10%-13%), inflammatory bowel disease (4%), or other (35%-41%). Patients could have more than one indication for colonoscopy.

Overall, bowel preparation was scored as adequate in 111 patients with MoviPrep (55%) and 111 patients with GoLYTELY (52.9%), and was inadequate in 91 patients with MoviPrep (45%) and 99 patients with GoLYTELY (47.1%). With a rate difference of 2.1% and a P value of .007, MoviPrep was considered noninferior to GoLYTELY for adequate bowel preparation.

In terms of secondary outcomes, there wasn’t a significant difference in the length of hospital stay, with a median stay of 6 days. Similarly, there were no differences in the rates of adverse events, including acute kidney injury and electrolyte abnormalities, with rates ranging from 1% to 9%. MoviPrep patients were slightly more likely to need additional bowel prep but also had a slightly shorter time to colonoscopy.
 

Ease of Use Is a Plus

On the basis of the Mayo Clinic Bowel Preparation survey, there wasn’t a difference between the groups in how much bowel prep solution was left in the bottle. However, more than twice as many patients who took MoviPrep said the prep was “easy,” and more MoviPrep patients called it “acceptable,” whereas more GoLYTELY patients said prep was “somewhat difficult” or “very difficult.”

In addition, significantly more MoviPrep patients (49.7% vs 33.7%) said they were “mostly willing” to drink the same prep again if they needed another colonoscopy in the future, while more GoLYTELY patients said they were “somewhat willing” (44.7% vs 34.6%) or “not willing at all” (21.6% vs 15.7%).

“Bowel prep, particularly in hospitals, is important because we do it so often. When you think about what our patients in the hospital are going through, they’re very sick and often have multiple comorbidities, so how can we give them a bowel prep that is safe for them, easiest for them, easy for our nursing staff who are experiencing shortages, and as good as the traditional bowel prep,” said the session’s moderator, Amy Oxentenko, MD, AGAF, professor of medicine and gastroenterologist at Mayo Clinic, Rochester, Minnesota.

Mayo Clinic

“Here we’ve seen great data that we can provide half the volume of the prep, still get amazing results in terms of adequacy of preparation, and the patients had a better experience,” said Oxentenko, the incoming ACG president. “That’s important because they likely may need another colonoscopy in the future, and we would hate for the bowel prep in the hospital to potentially dissuade them from a future colonoscopy.”

Future studies could stratify patients on the basis of colonoscopy indication or patient history, including conditions such as chronic constipation or neurogenic bowel, where some patients may still need a high-volume prep, Oxentenko said.

“Also, in the hospital setting, we don’t always know when a patient is going to the endoscopy suite due to other patient cases that may get prolonged or pushed in,” she said. “So how do you time the second dose of the split dose in anticipation of when that patient will go to the endoscopy suite to maintain that great preparation with a smaller volume prep?”

The study was awarded the ACG Governors Award for Excellence in Clinical Research (Trainee). Xiao and Oxentenko reported no relevant disclosures.

A version of this article appeared on Medscape.com.

PHILADELPHIA — Low-volume bowel preparation is noninferior in adequacy to standard-volume prep in hospitalized patients undergoing colonoscopy, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

Patients who received MoviPrep (2L of polyethylene glycol and ascorbic acid) reported higher tolerability and willingness to repeat colonoscopy preparation in the future than those taking GoLYTELY (4L of polyethylene glycol and electrolytes). In addition, the rates of electrolyte abnormalities and acute kidney injury were low and similar between the two groups.

Yale School of Medicine

“Bowel preparation remains a challenge in the inpatient setting, where 20%-50% of all colonoscopies can have inadequate bowel preparation,” said lead author Karen Xiao, MD, assistant professor in the section of digestive diseases at Yale School of Medicine, New Haven, Connecticut.

Previous studies have indicated that low-volume (2L), split-dose preparations are noninferior to high-volume (4L), split-dose regimens, and patients generally prefer low-volume options, she said. However, the current standard of care for inpatients continues to include high-volume polyethylene glycol electrocyte lavage, which may be less tolerable.

“Similar to prior studies, our study supports that MoviPrep may be a suitable alternative to traditional high-volume bowel preparation in hospitalized patients undergoing colonoscopy,” she said.

In a single-blind, multi-site, randomized controlled trial, Xiao and colleagues in the Yale–New Haven Health System randomly assigned inpatients undergoing colonoscopy to MoviPrep or GoLYTELY between January 2022 and July 2024. They excluded patients with prior small or large bowel resection, foreign body removal, or medical contraindications, such as obstruction, pregnancy, phenylketonuria, or glucose-6-phosphate dehydrogenase deficiency.

After bowel prep but before colonoscopy, patients took the Mayo Clinic Bowel Preparation survey. Colonoscopies were then recorded, and videos were scored by a single-blinded central reviewer. The primary outcome included the adequacy of bowel prep as defined by a Boston Bowel Preparation Scale score of 6 or higher, with each segment scoring 2 or higher.

In the final analysis, 202 patients received MoviPrep and 210 received GoLYTELY. In both groups, the average age was 62; about 60% were men; and 66% were White, about 22% Black, and 13%-15% Hispanic. About 65% of patients in both arms had an American Society of Anesthesiologists (ASA) score of 3, with another 20% in each group having an ASA score of 4, “reflective of a sicker inpatient population,” Xiao said.

Inpatient colonoscopy was indicated for gastrointestinal bleeding (55%), diarrhea (15%-20%), abnormal imaging (10%-13%), inflammatory bowel disease (4%), or other (35%-41%). Patients could have more than one indication for colonoscopy.

Overall, bowel preparation was scored as adequate in 111 patients with MoviPrep (55%) and 111 patients with GoLYTELY (52.9%), and was inadequate in 91 patients with MoviPrep (45%) and 99 patients with GoLYTELY (47.1%). With a rate difference of 2.1% and a P value of .007, MoviPrep was considered noninferior to GoLYTELY for adequate bowel preparation.

In terms of secondary outcomes, there wasn’t a significant difference in the length of hospital stay, with a median stay of 6 days. Similarly, there were no differences in the rates of adverse events, including acute kidney injury and electrolyte abnormalities, with rates ranging from 1% to 9%. MoviPrep patients were slightly more likely to need additional bowel prep but also had a slightly shorter time to colonoscopy.
 

Ease of Use Is a Plus

On the basis of the Mayo Clinic Bowel Preparation survey, there wasn’t a difference between the groups in how much bowel prep solution was left in the bottle. However, more than twice as many patients who took MoviPrep said the prep was “easy,” and more MoviPrep patients called it “acceptable,” whereas more GoLYTELY patients said prep was “somewhat difficult” or “very difficult.”

In addition, significantly more MoviPrep patients (49.7% vs 33.7%) said they were “mostly willing” to drink the same prep again if they needed another colonoscopy in the future, while more GoLYTELY patients said they were “somewhat willing” (44.7% vs 34.6%) or “not willing at all” (21.6% vs 15.7%).

“Bowel prep, particularly in hospitals, is important because we do it so often. When you think about what our patients in the hospital are going through, they’re very sick and often have multiple comorbidities, so how can we give them a bowel prep that is safe for them, easiest for them, easy for our nursing staff who are experiencing shortages, and as good as the traditional bowel prep,” said the session’s moderator, Amy Oxentenko, MD, AGAF, professor of medicine and gastroenterologist at Mayo Clinic, Rochester, Minnesota.

Mayo Clinic

“Here we’ve seen great data that we can provide half the volume of the prep, still get amazing results in terms of adequacy of preparation, and the patients had a better experience,” said Oxentenko, the incoming ACG president. “That’s important because they likely may need another colonoscopy in the future, and we would hate for the bowel prep in the hospital to potentially dissuade them from a future colonoscopy.”

Future studies could stratify patients on the basis of colonoscopy indication or patient history, including conditions such as chronic constipation or neurogenic bowel, where some patients may still need a high-volume prep, Oxentenko said.

“Also, in the hospital setting, we don’t always know when a patient is going to the endoscopy suite due to other patient cases that may get prolonged or pushed in,” she said. “So how do you time the second dose of the split dose in anticipation of when that patient will go to the endoscopy suite to maintain that great preparation with a smaller volume prep?”

The study was awarded the ACG Governors Award for Excellence in Clinical Research (Trainee). Xiao and Oxentenko reported no relevant disclosures.

A version of this article appeared on Medscape.com.

PHILADELPHIA — Low-volume bowel preparation is noninferior in adequacy to standard-volume prep in hospitalized patients undergoing colonoscopy, according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).

Patients who received MoviPrep (2L of polyethylene glycol and ascorbic acid) reported higher tolerability and willingness to repeat colonoscopy preparation in the future than those taking GoLYTELY (4L of polyethylene glycol and electrolytes). In addition, the rates of electrolyte abnormalities and acute kidney injury were low and similar between the two groups.

Yale School of Medicine

“Bowel preparation remains a challenge in the inpatient setting, where 20%-50% of all colonoscopies can have inadequate bowel preparation,” said lead author Karen Xiao, MD, assistant professor in the section of digestive diseases at Yale School of Medicine, New Haven, Connecticut.

Previous studies have indicated that low-volume (2L), split-dose preparations are noninferior to high-volume (4L), split-dose regimens, and patients generally prefer low-volume options, she said. However, the current standard of care for inpatients continues to include high-volume polyethylene glycol electrocyte lavage, which may be less tolerable.

“Similar to prior studies, our study supports that MoviPrep may be a suitable alternative to traditional high-volume bowel preparation in hospitalized patients undergoing colonoscopy,” she said.

In a single-blind, multi-site, randomized controlled trial, Xiao and colleagues in the Yale–New Haven Health System randomly assigned inpatients undergoing colonoscopy to MoviPrep or GoLYTELY between January 2022 and July 2024. They excluded patients with prior small or large bowel resection, foreign body removal, or medical contraindications, such as obstruction, pregnancy, phenylketonuria, or glucose-6-phosphate dehydrogenase deficiency.

After bowel prep but before colonoscopy, patients took the Mayo Clinic Bowel Preparation survey. Colonoscopies were then recorded, and videos were scored by a single-blinded central reviewer. The primary outcome included the adequacy of bowel prep as defined by a Boston Bowel Preparation Scale score of 6 or higher, with each segment scoring 2 or higher.

In the final analysis, 202 patients received MoviPrep and 210 received GoLYTELY. In both groups, the average age was 62; about 60% were men; and 66% were White, about 22% Black, and 13%-15% Hispanic. About 65% of patients in both arms had an American Society of Anesthesiologists (ASA) score of 3, with another 20% in each group having an ASA score of 4, “reflective of a sicker inpatient population,” Xiao said.

Inpatient colonoscopy was indicated for gastrointestinal bleeding (55%), diarrhea (15%-20%), abnormal imaging (10%-13%), inflammatory bowel disease (4%), or other (35%-41%). Patients could have more than one indication for colonoscopy.

Overall, bowel preparation was scored as adequate in 111 patients with MoviPrep (55%) and 111 patients with GoLYTELY (52.9%), and was inadequate in 91 patients with MoviPrep (45%) and 99 patients with GoLYTELY (47.1%). With a rate difference of 2.1% and a P value of .007, MoviPrep was considered noninferior to GoLYTELY for adequate bowel preparation.

In terms of secondary outcomes, there wasn’t a significant difference in the length of hospital stay, with a median stay of 6 days. Similarly, there were no differences in the rates of adverse events, including acute kidney injury and electrolyte abnormalities, with rates ranging from 1% to 9%. MoviPrep patients were slightly more likely to need additional bowel prep but also had a slightly shorter time to colonoscopy.
 

Ease of Use Is a Plus

On the basis of the Mayo Clinic Bowel Preparation survey, there wasn’t a difference between the groups in how much bowel prep solution was left in the bottle. However, more than twice as many patients who took MoviPrep said the prep was “easy,” and more MoviPrep patients called it “acceptable,” whereas more GoLYTELY patients said prep was “somewhat difficult” or “very difficult.”

In addition, significantly more MoviPrep patients (49.7% vs 33.7%) said they were “mostly willing” to drink the same prep again if they needed another colonoscopy in the future, while more GoLYTELY patients said they were “somewhat willing” (44.7% vs 34.6%) or “not willing at all” (21.6% vs 15.7%).

“Bowel prep, particularly in hospitals, is important because we do it so often. When you think about what our patients in the hospital are going through, they’re very sick and often have multiple comorbidities, so how can we give them a bowel prep that is safe for them, easiest for them, easy for our nursing staff who are experiencing shortages, and as good as the traditional bowel prep,” said the session’s moderator, Amy Oxentenko, MD, AGAF, professor of medicine and gastroenterologist at Mayo Clinic, Rochester, Minnesota.

Mayo Clinic

“Here we’ve seen great data that we can provide half the volume of the prep, still get amazing results in terms of adequacy of preparation, and the patients had a better experience,” said Oxentenko, the incoming ACG president. “That’s important because they likely may need another colonoscopy in the future, and we would hate for the bowel prep in the hospital to potentially dissuade them from a future colonoscopy.”

Future studies could stratify patients on the basis of colonoscopy indication or patient history, including conditions such as chronic constipation or neurogenic bowel, where some patients may still need a high-volume prep, Oxentenko said.

“Also, in the hospital setting, we don’t always know when a patient is going to the endoscopy suite due to other patient cases that may get prolonged or pushed in,” she said. “So how do you time the second dose of the split dose in anticipation of when that patient will go to the endoscopy suite to maintain that great preparation with a smaller volume prep?”

The study was awarded the ACG Governors Award for Excellence in Clinical Research (Trainee). Xiao and Oxentenko reported no relevant disclosures.

A version of this article appeared on Medscape.com.

PHILADELPHIA — Researchers have developed an artificial intelligence (AI) tool capable of detecting and differentiating cystic and solid pancreatic lesions during endoscopic ultrasound (EUS) with high accuracy.

This was a transatlantic collaborative effort involving researchers in Portugal, Spain, the United States, and Brazil, and the AI tool “works on different platforms and different devices,” Miguel Mascarenhas, MD, PhD, with Centro Hospitalar Universitário de São João, Porto, Portugal, said in a presentation at the annual meeting of the American College of Gastroenterology.

Mascarenhas noted that pancreatic cystic lesions (PCLs) are a common incidental finding during imaging and are differentiated by whether they’re mucinous PCLs (M-PCLs) or non-mucinous PCLs (NM-PCLs). The malignancy risk is almost exclusive of PCL with a mucinous phenotype.

Pancreatic solid lesions are also prevalent, and differentiation is challenging. Pancreatic ductal adenocarcinoma (P-DAC) is the most common pancreatic solid lesion and has a poor prognosis because of late-stage disease at diagnosis. Pancreatic neuroendocrine tumors (P-NETs) are less common but have malignant potential.

EUS is the “gold standard” for pancreatic lesion evaluation, but its diagnostic accuracy is suboptimal, particularly for lesions < 10 mm, Mascarenhas noted.

With an eye toward improving diagnostic accuracy, he and colleagues developed a convolutional neural network for detecting and differentiating cystic (M-PCL and NM-PCL) and solid (P-DAC and P-NET) pancreatic lesions.

They leveraged data from 378 EUS exams with 126,000 still images — 19,528 M-PCL, 8175 NM-PCL, 64,286 P-DAC, 29,153 P-NET, and 4858 normal pancreas images.

The AI tool demonstrated 99.1% accuracy for identifying normal pancreatic tissue, and it showed 99% and 99.8% accuracy for M-PCL and NM-PCL, respectively.

For pancreatic solid lesions, P-DAC and P-NET were distinguished with 94% accuracy, with 98.7% and 83.6% sensitivity for P-DAC and P-NET, respectively.
 

Real-Time Validation Next

“AI is delivering promising results throughout medicine, but particularly in gastroenterology, which is one of the most fertile areas of AI research. This comes mostly from the deployment of deep-learning models, most of them convolutional neural networks, which are highly efficient for image analysis,” Mascarenhas told attendees.

This is the “first worldwide convolutional neural network” capable of detecting and differentiating both cystic and solid pancreatic lesions. The use of a large dataset from four centers in two continents helps minimize the impact of demographic bias, Mascarenhas added.

The study is based on still images, not full videos, he noted. As a next step, the team is conducting a multicenter study focused on real-time clinical validation of the model during EUS procedures.

“AI has the potential to improve the diagnostic accuracy of endoscopic ultrasound. We’re just on the tip of the iceberg. There is enormous potential to harness AI, and we welcome all the groups that might want to join our research,” Mascarenhas said.

 

Brennan Spiegel, MD, MSHS, AGAF, director of Health Services Research at Cedars-Sinai Medical Center, Los Angeles, who wasn’t involved in the study, is optimistic about emerging applications for AI.

“AI holds incredible promise in gastroenterology, especially for diagnosing complex pancreatic lesions where early, accurate differentiation can be lifesaving,” Spiegel said in an interview.

“This study’s high accuracy across diverse datasets is encouraging; however, as a retrospective analysis, it leaves the real-time clinical impact still to be proven. Prospective studies will be essential to confirm AI’s role in enhancing our diagnostic capabilities,” Spiegel cautioned.

“More generally, AI is rapidly transforming gastroenterology by enhancing our ability to detect, differentiate, and monitor conditions with unprecedented precision. From improving early cancer detection to guiding complex diagnostic procedures, AI stands to become an invaluable tool that complements clinical expertise. As we refine these technologies, the potential for AI to elevate both diagnostic accuracy and patient outcomes in GI is truly remarkable,” Spiegel said.

The study had no specific funding. Mascarenhas and Spiegel have declared no conflicts of interest.

A version of this article appeared on Medscape.com.

PHILADELPHIA — Researchers have developed an artificial intelligence (AI) tool capable of detecting and differentiating cystic and solid pancreatic lesions during endoscopic ultrasound (EUS) with high accuracy.

This was a transatlantic collaborative effort involving researchers in Portugal, Spain, the United States, and Brazil, and the AI tool “works on different platforms and different devices,” Miguel Mascarenhas, MD, PhD, with Centro Hospitalar Universitário de São João, Porto, Portugal, said in a presentation at the annual meeting of the American College of Gastroenterology.

Mascarenhas noted that pancreatic cystic lesions (PCLs) are a common incidental finding during imaging and are differentiated by whether they’re mucinous PCLs (M-PCLs) or non-mucinous PCLs (NM-PCLs). The malignancy risk is almost exclusive of PCL with a mucinous phenotype.

Pancreatic solid lesions are also prevalent, and differentiation is challenging. Pancreatic ductal adenocarcinoma (P-DAC) is the most common pancreatic solid lesion and has a poor prognosis because of late-stage disease at diagnosis. Pancreatic neuroendocrine tumors (P-NETs) are less common but have malignant potential.

EUS is the “gold standard” for pancreatic lesion evaluation, but its diagnostic accuracy is suboptimal, particularly for lesions < 10 mm, Mascarenhas noted.

With an eye toward improving diagnostic accuracy, he and colleagues developed a convolutional neural network for detecting and differentiating cystic (M-PCL and NM-PCL) and solid (P-DAC and P-NET) pancreatic lesions.

They leveraged data from 378 EUS exams with 126,000 still images — 19,528 M-PCL, 8175 NM-PCL, 64,286 P-DAC, 29,153 P-NET, and 4858 normal pancreas images.

The AI tool demonstrated 99.1% accuracy for identifying normal pancreatic tissue, and it showed 99% and 99.8% accuracy for M-PCL and NM-PCL, respectively.

For pancreatic solid lesions, P-DAC and P-NET were distinguished with 94% accuracy, with 98.7% and 83.6% sensitivity for P-DAC and P-NET, respectively.
 

Real-Time Validation Next

“AI is delivering promising results throughout medicine, but particularly in gastroenterology, which is one of the most fertile areas of AI research. This comes mostly from the deployment of deep-learning models, most of them convolutional neural networks, which are highly efficient for image analysis,” Mascarenhas told attendees.

This is the “first worldwide convolutional neural network” capable of detecting and differentiating both cystic and solid pancreatic lesions. The use of a large dataset from four centers in two continents helps minimize the impact of demographic bias, Mascarenhas added.

The study is based on still images, not full videos, he noted. As a next step, the team is conducting a multicenter study focused on real-time clinical validation of the model during EUS procedures.

“AI has the potential to improve the diagnostic accuracy of endoscopic ultrasound. We’re just on the tip of the iceberg. There is enormous potential to harness AI, and we welcome all the groups that might want to join our research,” Mascarenhas said.

 

Brennan Spiegel, MD, MSHS, AGAF, director of Health Services Research at Cedars-Sinai Medical Center, Los Angeles, who wasn’t involved in the study, is optimistic about emerging applications for AI.

“AI holds incredible promise in gastroenterology, especially for diagnosing complex pancreatic lesions where early, accurate differentiation can be lifesaving,” Spiegel said in an interview.

“This study’s high accuracy across diverse datasets is encouraging; however, as a retrospective analysis, it leaves the real-time clinical impact still to be proven. Prospective studies will be essential to confirm AI’s role in enhancing our diagnostic capabilities,” Spiegel cautioned.

“More generally, AI is rapidly transforming gastroenterology by enhancing our ability to detect, differentiate, and monitor conditions with unprecedented precision. From improving early cancer detection to guiding complex diagnostic procedures, AI stands to become an invaluable tool that complements clinical expertise. As we refine these technologies, the potential for AI to elevate both diagnostic accuracy and patient outcomes in GI is truly remarkable,” Spiegel said.

The study had no specific funding. Mascarenhas and Spiegel have declared no conflicts of interest.

A version of this article appeared on Medscape.com.

PHILADELPHIA — Researchers have developed an artificial intelligence (AI) tool capable of detecting and differentiating cystic and solid pancreatic lesions during endoscopic ultrasound (EUS) with high accuracy.

This was a transatlantic collaborative effort involving researchers in Portugal, Spain, the United States, and Brazil, and the AI tool “works on different platforms and different devices,” Miguel Mascarenhas, MD, PhD, with Centro Hospitalar Universitário de São João, Porto, Portugal, said in a presentation at the annual meeting of the American College of Gastroenterology.

Mascarenhas noted that pancreatic cystic lesions (PCLs) are a common incidental finding during imaging and are differentiated by whether they’re mucinous PCLs (M-PCLs) or non-mucinous PCLs (NM-PCLs). The malignancy risk is almost exclusive of PCL with a mucinous phenotype.

Pancreatic solid lesions are also prevalent, and differentiation is challenging. Pancreatic ductal adenocarcinoma (P-DAC) is the most common pancreatic solid lesion and has a poor prognosis because of late-stage disease at diagnosis. Pancreatic neuroendocrine tumors (P-NETs) are less common but have malignant potential.

EUS is the “gold standard” for pancreatic lesion evaluation, but its diagnostic accuracy is suboptimal, particularly for lesions < 10 mm, Mascarenhas noted.

With an eye toward improving diagnostic accuracy, he and colleagues developed a convolutional neural network for detecting and differentiating cystic (M-PCL and NM-PCL) and solid (P-DAC and P-NET) pancreatic lesions.

They leveraged data from 378 EUS exams with 126,000 still images — 19,528 M-PCL, 8175 NM-PCL, 64,286 P-DAC, 29,153 P-NET, and 4858 normal pancreas images.

The AI tool demonstrated 99.1% accuracy for identifying normal pancreatic tissue, and it showed 99% and 99.8% accuracy for M-PCL and NM-PCL, respectively.

For pancreatic solid lesions, P-DAC and P-NET were distinguished with 94% accuracy, with 98.7% and 83.6% sensitivity for P-DAC and P-NET, respectively.
 

Real-Time Validation Next

“AI is delivering promising results throughout medicine, but particularly in gastroenterology, which is one of the most fertile areas of AI research. This comes mostly from the deployment of deep-learning models, most of them convolutional neural networks, which are highly efficient for image analysis,” Mascarenhas told attendees.

This is the “first worldwide convolutional neural network” capable of detecting and differentiating both cystic and solid pancreatic lesions. The use of a large dataset from four centers in two continents helps minimize the impact of demographic bias, Mascarenhas added.

The study is based on still images, not full videos, he noted. As a next step, the team is conducting a multicenter study focused on real-time clinical validation of the model during EUS procedures.

“AI has the potential to improve the diagnostic accuracy of endoscopic ultrasound. We’re just on the tip of the iceberg. There is enormous potential to harness AI, and we welcome all the groups that might want to join our research,” Mascarenhas said.

 

Brennan Spiegel, MD, MSHS, AGAF, director of Health Services Research at Cedars-Sinai Medical Center, Los Angeles, who wasn’t involved in the study, is optimistic about emerging applications for AI.

“AI holds incredible promise in gastroenterology, especially for diagnosing complex pancreatic lesions where early, accurate differentiation can be lifesaving,” Spiegel said in an interview.

“This study’s high accuracy across diverse datasets is encouraging; however, as a retrospective analysis, it leaves the real-time clinical impact still to be proven. Prospective studies will be essential to confirm AI’s role in enhancing our diagnostic capabilities,” Spiegel cautioned.

“More generally, AI is rapidly transforming gastroenterology by enhancing our ability to detect, differentiate, and monitor conditions with unprecedented precision. From improving early cancer detection to guiding complex diagnostic procedures, AI stands to become an invaluable tool that complements clinical expertise. As we refine these technologies, the potential for AI to elevate both diagnostic accuracy and patient outcomes in GI is truly remarkable,” Spiegel said.

The study had no specific funding. Mascarenhas and Spiegel have declared no conflicts of interest.

A version of this article appeared on Medscape.com.