Observational studyLangenbeck's archives of surgery2026
Minimizer ring implantation versus pouch revision for weight regain and functional failure after Roux-en-Y gastric bypass: A retrospective single-centre analysis.
Observational study in Langenbeck's archives of surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
purposeTo compare short- to mid-term weight loss outcomes, safety, and functional tolerance between Minimizer ring implantation and pouch revisional surgery in patients presenting with recurrent weight gain or functional failure after Roux-en-Y gastric bypass (RYGB).
methodsThis retrospective observational study included patients undergoing revisional bariatric surgery after RYGB between 2020 and 2025 at a single Swiss bariatric center. Revisional strategies comprised Minimizer ring implantation and pouch-based revisions. Outcomes assessed included percentage total weight loss (%TWL), body mass index (BMI) changes, postoperative complications, reinterventions, and functional tolerance at 3, 6, and 12 months. Non-parametric statistical methods were applied.
results27 patients were analyzed (14 Minimizer ring implantations, 13 pouch revisions). Both strategies achieved progressive weight loss with no significant differences in %TWL at 3, 6 and 12 months. Early postoperative complication rates were similar in both groups. Minimizer ring implantation was associated with a higher rate of late intolerance and secondary interventions leading to ring removal.
conclusionWithin the available 12-month follow-up, no statistically significant difference in weight loss was detected between Minimizer ring implantation and pouch revisional surgery. Minimizer ring implantation was associated with a higher observed burden of intolerance and secondary interventions in this cohort. Pouch revision may provide anatomical correction without foreign-body-related complications. These findings should be considered hypothesis-generating and suggest that future studies should assess cumulative reintervention burden across revisional strategies.
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