ArticleSurgical endoscopy2016
Importance of pouch size in laparoscopic Roux-en-Y gastric bypass: a cohort study of 14,168 patients.
Article in Surgical endoscopy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 4 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
44 citing papers in PubMed, 4 syntheses or guidelines pooled it, 87 citations in OpenAlex.
- Predictors of marginal ulcer after gastric bypass: a systematic review and meta-analysis.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2023Pooled it
- A systematic review of the effect of gastric pouch and/or gastrojejunostomy (stoma) size on weight loss outcomes with Roux-en-Y gastric bypass.Surgical endoscopy · 2020Pooled it
- A Systematic Review of One Anastomosis/Mini Gastric Bypass as a Metabolic Operation for Patients with Body Mass Index ≤ 35 kg/mObesity surgery · 2020Pooled it
- Medical versus surgical treatment for refractory or recurrent peptic ulcer.The Cochrane database of systematic reviews · 2016Pooled it
- Extended Versus Standard Pouch in Roux-en-Y Gastric Bypass: Five To Nine Year Follow-Up Results of a Randomized Controlled Trial.Obesity surgery · 2026Trial
- Midterm Results from the Dutch Common Channel Trial (DUCATI): Superior Weight Loss Results of the Long Roux Limb Gastric Bypass in Comparison to the Standard Bypass at 3-Year Follow-Up.Obesity surgery · 2021Trial
- Trial
- An Extended Pouch in a Roux-En-Y Gastric Bypass Reduces Weight Regain: 3-Year Results of a Randomized Controlled Trial.Obesity surgery · 2020Trial
- Patient-Reported Outcome Measures 2 Years After Standard and Distal Gastric Bypass-a Double-Blind Randomized Controlled Trial.Obesity surgery · 2018Trial
- Early and Late Complications After Sleeve Gastrectomy and Roux-en-Y Gastric Bypass: A Narrative Review.Journal of metabolic and bariatric surgery · 2026Review
- Laparoscopic Fundoplication Using the Excluded Stomach Versus Conversion to Roux-en-Y Gastric Bypass for Refractory Reflux After One-Anastomosis Gastric Bypass: A Retrospective Comparative Analysis of Safety and 1-Year Outcomes.Journal of clinical medicine · 2026Article
- Global Technical Variations in Roux-en-Y Gastric Bypass: A Worldwide Survey Among IFSO Members.Obesity surgery · 2026Article
- Remnant Gastrectomy as a Pathophysiology Based Treatment of Marginal Ulcer after Roux-en-Y Gastric Bypass: A Retrospective Clinical Series of 41 Patients.Obesity surgery · 2026Article
- Beyond the Procedure: Revisiting the Technical Determinants of Sleeve Gastrectomy and Roux-en-Y Gastric Bypass.Journal of metabolic and bariatric surgery · 2026Review
- The theoretical calculation with laparoscopic and 3D-MSCT validation of the volume measurement method for a gastric pouch in gastric bypass surgery.Frontiers in surgery · 2026Article
- Post Roux-en-Y Gastric Bypass Challenges: Gastrogastric Fistula After Marginal Ulcer Development.Obesity surgery · 2025Article
- Roux-en-Y Gastric Bypass: Revisiting Gastric Pouch Length Variability in Search of Consensus.Obesity surgery · 2025Article
- More Anastomotic Ulcers, Less Dumping, and Equal Weight Loss in Long vs. Short Gastric Pouch in Laparoscopic Roux-en-Y Gastric Bypass.Obesity surgery · 2025Article
- Outcomes and complications after long versus short gastric pouch Roux-en-Y gastric bypass in patients with severe obesity.Scientific reports · 2024Article
- Paired Commentary for OBSU-D-24-00337R2 Similar Rates of Symptomatic Marginal Ulcers After One-Anastomosis-Gastric Bypass Compared to Roux-en-Y Gastric Bypass.Obesity surgery · 2024Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLaparoscopic Roux-en-Y gastric bypass (LRYGB) is one of the most common bariatric procedures worldwide, but the importance of gastric pouch size is still under debate. We have studied how pouch size affects risk of marginal ulcer and excess body mass index loss (EBMIL%) at 6 weeks and 1 year postoperatively.
methodsScandinavian Obesity Surgery Registry included 14,168 LRYGB patients with linear stapled gastrojejunostomies, having complete pre- and postoperative data concerning length of stapler needed to complete the gastric pouch, incidence of marginal ulcers and weight loss. LRYGB technique in Sweden is highly standardized, and total length of stapler was used as a proxy for pouch size.
resultsMean length of stapler used for the pouch was 145 mm. At 1 year, symptomatic marginal ulcers were noted in 0.9 % of the patients. The relative risk of marginal ulcer increased by 14 % (95 % confidence interval 9-20 %), for each centimeter of stapler used for the pouch. Body mass index (BMI) was reduced from 42.4 ± 5.1 to 36.1 kg/m(2) at 6 weeks and 28.9 kg/m(2) at 1 year. The total length of stapler predicted EBMIL% at 6 weeks but not at 1 year. Female gender, low preoperative BMI, young age and absence of diabetes predicted better EBMIL% at 1 year.
conclusionA smaller pouch reduces the risk of marginal ulcers, but does not predict better weight loss at 1 year. Additional stapling should be avoided as each extra centimeter increases the relative risk of marginal ulcers by 14 %.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.