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Updates in Surgery
Published in: Updates in Surgery 2/2021

01-04-2021 | Original Article

Revision procedures after initial Roux-en-Y gastric bypass, treatment of weight regain: a systematic review and meta-analysis

Authors: Mohammad Kermansaravi, Amir Hossein Davarpanah Jazi, Shahab Shahabi Shahmiri, Foolad Eghbali, Rohollah Valizadeh, Masoud Rezvani

Published in: Updates in Surgery | Issue 2/2021

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Abstract

Morbid obesity is a global chronic disease, and bariatric procedures have been approved as the best method to control obesity. Roux-en-Y gastric bypass is one of the most common bariatric surgeries in the world and has become the gold standard procedure for many years. However, some patients experience weight regain or weight loss failure after the initial bypass surgery and require revisional or conversional interventions. International databases including PubMed, International Scientific Indexing (ISI), and Scopus were considered for a systematic search of articles that were published by 5th of May 2020. Forty-one published studies, which reported revision procedure on 1403 patients, were selected and analyzed for this review. The selected studies were categorized into six groups of revision procedures, including laparoscopic pouch resizing and/or revision of gastro-jejunal anastomosis (GJA), adjustable or non-adjustable gastric band over pouch ± pouch/GJA resizing, endoscopic revision of gastric GJA ± pouch, distal Roux-en-Y gastric bypass (DRGB), biliopancreatic diversion with duodenal switch (BPD-DS) or single anastomosis duodeno-ileal bypass with gastric sleeve (SADI-S), DRGB + Band or pouch/GJA resizing. Revision procedures result in more weight loss after the initial weight loss procedures. In the one-year follow-up, DRGB by itself with standardized mean difference (SMD) of  – 1.24 presented a greater decrease in body mass index (BMI). DRGB plus band or pouch/GJA resizing, BPD-DS or SADI, adjustable or non-adjustable gastric banding over pouch ± pouch/GJA resizing, endoscopic pouch and/or GJA revision and laparoscopic pouch or/and GJA resizing revealed a lower decrease in BMI in order, respectively. In the three-year follow-up, BPD-DS or SADI-S method with SMD of  – 1.40 presented the highest decrease in BMI. In follow, DRGB alone, adjustable or non-adjustable gastric banding over gastric pouch ± pouch / GJA resizing, DRGB + Band or gastric pouch/GJA resizing, laparoscopic pouch and/or GJA resizing and endoscopic revision of pouch and/or GJA revealed less reduction in BMI, respectively. In the five-year follow-up, DRGB alone procedures with SMD of  – 2.17 presented the greatest reduction in BMI. Subsequently, BPD-DS or SADI-S, laparoscopic pouch and/or GJA size revision, and endoscopic revision of GJA/pouch revealed less overall decrease in BMI in order. All methods of revision procedures after the initial RYGB have been effective in the resolution of weight regain. However, based on the findings in this systematic review, it seems DRGB or BPD-DS/SADI-S is the most effective procedure in the long-term follow-up outcome. More studies with a higher number of patients and even longer follow-ups will be required to obtain more accurate data and outcome.
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Metadata
Title
Revision procedures after initial Roux-en-Y gastric bypass, treatment of weight regain: a systematic review and meta-analysis
Authors
Mohammad Kermansaravi
Amir Hossein Davarpanah Jazi
Shahab Shahabi Shahmiri
Foolad Eghbali
Rohollah Valizadeh
Masoud Rezvani
Publication date
01-04-2021
Publisher
Springer International Publishing
Published in
Updates in Surgery / Issue 2/2021
Print ISSN: 2038-131X
Electronic ISSN: 2038-3312
DOI
https://doi.org/10.1007/s13304-020-00961-w

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