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Roux-en-Y gastric bypass is superior to sleeve gastrectomy regarding postoperative diarrhea and nausea: a multicenter prospective study

Background: Bariatric surgery (BS) currently is the most effective treatment for severe obesity. To our knowledge, no data comparing different bariatric procedures regarding differences in gastrointestinal symptoms have been published. - Methods: For this multicenter, prospective, nonrandomized clin...

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Main Authors: Finze, Alida (Author) , Rajjo, Hiba (Author) , Rheinwalt, Karl Peter (Author) , Plamper, Andreas (Author) , Gärtner, Daniel (Author) , Popp, Anna (Author) , Reißfelder, Christoph (Author) , Otto, Mirko (Author) , Blank, Susanne (Author)
Format: Article (Journal)
Language:English
Published: 4 September 2025
In: Bariatric surgical practice and patient care

ISSN:2168-0248
DOI:10.1177/2168023X251374356
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1177/2168023X251374356
Verlag, lizenzpflichtig, Volltext: http://www.liebertpub.com/doi/10.1177/2168023X251374356
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Author Notes:Alida Finze, Hiba Rajjo, Karl Peter Rheinwalt, Andreas Plamper, Daniel Gärtner, Anna Popp, Christoph Reißfelder, Mirko Otto, and Susanne Blank
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Summary:Background: Bariatric surgery (BS) currently is the most effective treatment for severe obesity. To our knowledge, no data comparing different bariatric procedures regarding differences in gastrointestinal symptoms have been published. - Methods: For this multicenter, prospective, nonrandomized clinical trial in Germany, 310 patients underwent screening, and 124 patients completed the study. Patients completed the following standardized questionnaires preoperatively and at 6 and 12 months after surgery: Gastrointestinal quality of life index, bowel disease questionnaire, and Cleveland clinic incontinence score. - Results: Mean patient age was 44.4 years. Mean body mass index prior to surgery was 45.1 kg/m2. Physical function improved significantly after surgery (31.9 vs. 62.1 and 62.3, respectively, p < 0.001). Nausea and diarrhea symptoms worsened 12 months after sleeve gastrectomy (SG; p = 0.025 and p = 0.017, respectively). Constipation improved 12 months after SG (p = 0.006). Multivariate analysis revealed SG as an independent predictive factor for diarrhea (p = 0.026). Physical and emotional function improved for Roux-en-Y gastric bypass and SG. - Conclusion: This study highlights differences in symptom outcomes after different bariatric procedures. Significant changes in bowel habits were seen especially after SG. Overall, BS improves quality of life. Side effects of surgery should not be a contraindication for surgery. However, patients can be educated regarding possible side effects, and the surgical procedure can be chosen individually.
Item Description:Gesehen am 14.10.2025
Physical Description:Online Resource
ISSN:2168-0248
DOI:10.1177/2168023X251374356

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