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Dr. Todd Ponsky

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Esophagogastric Dissociation for GERD in Severe Neurodisability

Video Published 2019-01-11 Updated 2024-02-10

Timestops (3)

Esophagogastric Dissociation for Severe GERD

Study Design and Failure Rates

Quality of Life Outcomes

Topic Overview

A discussion of a comparative study examining esophagogastric dissociation versus Nissen fundoplication as primary anti-reflux procedures in neurologically impaired pediatric patients with severe GERD. The study found a 4% failure rate for esophagogastric dissociation compared to 21% for Nissen (not statistically significant), but significantly lower continued need for anti-reflux medications in the dissociation group (17% vs 54%). The discussants note the study may have been underpowered and did not adequately address complication rates such as leaks and strictures.

Key Takeaways

Esophagogastric dissociation showed 4% failure vs 21% for Nissen in severe neuro-impairment, though not statistically significant. (1:13)
Post-op anti-reflux meds needed in 17% after dissociation vs 54% after Nissen—a statistically significant difference. (1:29)
Study likely underpowered to detect true failure-rate differences; multi-center trial needed for definitive comparison. (2:03)
Critical gap: study didn't adequately report leak/stricture rates—the main reason surgeons avoid esophagogastric dissociation. (2:16)

Inside this episode

Kai, the Library's AI content creator, listened to this episode and mapped who's speaking, the chapters, key claims, and cases. Every item links to the exact moment in the recording.

AI-enriched

Who's speaking

Todd Ponsky — host
Ian Glenn — guest

Chapters

0:04Introduction and Historical Context — Introduction to the topic of esophagogastric dissociation versus Nissen fundoplication, with historical framing of dissociation as a last-resort operation now being considered as a primary procedure for select neurologically impaired patients.
0:48Study Design and Primary Outcomes — Description of the comparative study methodology, primary outcome definitions, and key findings including failure rates and medication requirements.
1:49Discussion of Limitations and Perioperative Factors — Analysis of statistical significance, potential type 2 error, perioperative outcomes, and gaps in complication reporting.

Key claims

0:14Esophagogastric dissociation was historically thought of as a last resort operation when a Nissen won't work — Todd Ponsky
0:24Esophagogastric dissociation is being suggested as an upfront primary operation for a small subset of patients who have severe neurologic impairment — Todd Ponsky
0:48The study compared patients with severe GERD who were neurologically disabled, half undergoing esophagogastric dissociation and half undergoing laparoscopic Nissen — Ian Glenn
1:01Primary outcome was operative failure, defined as either recurrence of preoperative reflux symptoms or requirement of additional anti-reflux surgery — Ian Glenn
1:13There was a 4% failure rate in the esophagogastric dissociation group — Ian Glenn
1:13There was a 21% failure rate in the Nissen group — Ian Glenn
1:21The difference in failure rates between esophagogastric dissociation and Nissen was not statistically significant — Ian Glenn
1:2917% of patients in the esophagogastric dissociation group continued to require anti-reflux medications after surgery — Ian Glenn
1:2954% of patients in the Nissen group continued to require anti-reflux medications after surgery — Ian Glenn
1:29The difference in continued medication requirement between groups was statistically significant — Ian Glenn
1:39Caregiver-evaluated quality of life and symptom scores were the same between the two groups with no statistically significant difference — Ian Glenn
2:03The lack of statistical significance in failure rates could potentially be a type 2 error where there was actually a difference but the sample size was too small to detect it — Ian Glenn
2:12A multi-center study will probably be needed to really understand the difference between these procedures — Todd Ponsky
2:16The study did not adequately look at complication rates such as leaks and strictures — Todd Ponsky
2:18Leaks and strictures are the main concern of why most surgeons don't do esophagogastric dissociation — Todd Ponsky
2:24Esophagogastric dissociation is a much bigger surgery than Nissen fundoplication — Ian Glenn
2:26The study examined perioperative factors including time in the OR, length of hospital stay, need for ICU stay, and time to full feeds, with statistically significant differences following expected trends — Ian Glenn
2:39The study did not report on leaks, strictures, or long-term requirement for additional surgeries other than anti-reflux operations — Ian Glenn

Open questions

What are the actual rates of leaks and strictures following esophagogastric dissociation in this patient population?
Would a larger, multi-center study demonstrate statistical significance in the operative failure rate difference between the two procedures?
What is the long-term requirement for additional surgeries beyond anti-reflux operations in both groups?

This episode was analyzed and enriched by Kai, the Library's AI content creator. Every item links to the moment it comes from — click a timestamp to listen in context.

Esophagogastric Dissociation vs Nissen in Neurologically Impaired Children: Failure Rates and Medication Dependence

The essential version of this episode — what it covers, the points that matter most, and what it changes for you. Written by Kai from the episode transcript and reviewed before publishing.

For specialists · Core brief · AI-written, human-reviewed

What This Study Compared

This single-center study compared esophagogastric dissociation against laparoscopic Nissen fundoplication as primary anti-reflux procedures in children with severe neurologic impairment and GERD 0:48. The primary endpoint was operative failure, defined as recurrence of preoperative reflux symptoms or need for additional anti-reflux surgery 1:01.

Outcomes

Operative failure occurred in 4% of the dissociation group versus 21% of the Nissen group, but this difference did not reach statistical significance 1:13 1:13 1:21. The authors acknowledge this may represent type 2 error—a true difference masked by inadequate sample size 2:03.

Postoperative medication dependence differed significantly: 17% of dissociation patients required ongoing anti-reflux medications compared to 54% after Nissen 1:29 1:29 1:29. Caregiver-assessed quality of life and symptom scores showed no difference between groups 1:39.

Perioperative metrics—OR time, length of stay, ICU requirement, time to full feeds—all favored Nissen as expected for the less extensive procedure, with statistically significant differences 2:26.

What Was Not Addressed

The study did not report leak rates, stricture formation, or long-term need for additional procedures beyond repeat anti-reflux operations 2:39. These complications drive most surgeons' reluctance to perform esophagogastric dissociation 2:18, which remains "a much bigger surgery" than Nissen 2:24.

Clinical Context Shift

Historically, esophagogastric dissociation was reserved as salvage after failed Nissen 0:14. This study represents the emerging practice of offering it as an upfront option in select severely neurologically impaired patients 0:24. Definitive comparison will likely require multicenter collaboration 2:12.

What This Changes

For surgeons managing GERD in this population, the data suggest dissociation may reduce medication dependence and possibly operative failure, but the complication profile remains undefined in this comparison. The choice between procedures cannot yet rest on failure rate alone given the underpowered analysis and absent safety data on the complications that matter most in dissociation.

Takeaways from this story

Dissociation showed 4% failure vs 21% for Nissen, but sample size likely too small to confirm difference.
Postop medication dependence significantly lower after dissociation: 17% vs 54% for Nissen.
Study did not report leak or stricture rates—the complications that drive most surgeons' avoidance of dissociation.
Dissociation now proposed as upfront option in severe neuro-impairment, not just salvage after failed Nissen.

Keywords

GERD severe neurologic impairment reflux Nissen fundoplication esophagogastric dissociation laparoscopic Nissen anti-reflux surgery anti-reflux medications Journal of Pediatric Surgery Akron Children's Cleveland Clinic

Hashtags

#PediatricSurgery #GERD #Neurodisability #AntiRefluxSurgery

Transcript

This is Todd Ponsky from the Journal of Pediatric Surgery, and today we're going to discuss the topic about Nissen fundopliccation and esophagogastric dissociation. The dissociation was thought of historically as sort of the last resort operation, the big operation when a Nissan won't work, where we dissociate the esophagus from the stomach. But more recently, people are suggesting that the esophagogastric dissociation could be an upfront primary operation for a small subset of patients who have severe neurologic impairment. And so there was a study recently in the Journal of Pediatric Surgeon that looked at this. Discussing the article today is Ian Glenn, who is the pediatric surgery research fellow here at Akron Children's. He's a general surgery resident at the Cleveland Clinic. Ian, what did the article show? What this study did was they took patients who had severe GERD and were neurologically disabled, and half the patients underwent esophagogastric dissociation, and the other half of the patients underwent laparoscopic Nissan. Primary outcome was operative failure, which they defined as either recurrence of their preoperative reflux symptoms or a requirement of an additional uh anti-reflux surgery. So that was found to be, there was a 4% failure rate in the esophagogastric dissociation group, there was a 21% failure rate in the Nissen group. However, that wasn't statistically significant. Other things they looked at were a continued requirement for anti-reflux medications after surgery. Uh, 17% of the patients in the esophagogastric dissociation group continued to require them, whereas 54% required it in the Nissan group, um, and that was statistically significant. Also, they had the caregivers evaluate quality of life and symptom scores for the patients, and those were the same between the two groups. So there's no statistically significant difference there. All right, so in summary, it sounds like they looked at. Needing meds after surgery and failure of the operation, both were better in the esophageal dissociation group, but only the meds was statistically significant. Right? And the authors brought up that this could potentially be a type 2 error where there was actually a difference between the two groups and the sample size was just a little bit too small to detect that. Yeah, so we'll probably need to do a multi-center study to really understand this. Agreed. They also didn't really look at complication rate. About leaks and strictures, which are really the concern of why most of us don't do this big operation. Yeah, it's definitely a much bigger surgery. They looked at perioperative factors such as time in the OR, length of stay in the hospital, need for an ICU stay, time to full feeds, and there were statistically significant differences in those groups following the trends you'd expect. But no, they didn't talk about leaks or strictures or a long-term requirement for additional surgeries other than anti-reflux operations. Great, perfect. Ian Glenn, thank you very much. Thanks, do.

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