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Long-term outcome after biliopancreatic diversion with duodenal switch: a single-center experience with up to 20 years follow-up

Published:October 28, 2022DOI:https://doi.org/10.1016/j.soard.2022.10.020

      Abstract

      Background

      Biliopancreatic diversion with duodenal switch (BPD/DS) is the most effective standard bariatric procedure in terms of weight loss and remission of co-morbidities but carries the risk of severe long-term side effects.

      Objective

      The aim of this study was to analyze the long-term effects of BPD/DS in terms of morbidity, weight loss, remission of associated medical problems, deficiencies, and reoperations.

      Setting

      Academic teaching hospital, Switzerland.

      Methods

      This is a retrospective, single-center study of prospectively collected data of all patients who underwent BPD/DS from 1999 to 2011 with a minimal follow-up (FU) of 10 years.

      Results

      A total of 116 patients (83.6% female) underwent BPD/DS with a mean initial body mass index (BMI) of 47 ± 6.5 kg/m2. Of these, 68% of the procedures were performed in open technique and 32% laparoscopically. The majority (76.7%) of patients had laparoscopic adjustable gastric banding before BPD/DS. The mean FU time was 14 ± 4.4 years and the FU rate at 5, 10, and 14 years was 95.6% (n = 108), 90% (n = 98), and 75.3% (n = 70), respectively. The mean excess BMI loss at 5, 10, and 14 years was 78% ± 24.1%, 76.5% ± 26.7%, and 77.8% ± 33.8%, respectively. Complete (n = 22) or partial remission (n = 4) of type 2 diabetes was observed in 92.8% of patients. Forty reoperations were necessary in 34 patients (29.3%) because of malnutrition or refractory diarrhea (n = 13), insufficient weight loss or weight rebound (n = 7), reflux or stenosis (n = 10), and various/combined indications (n = 10). The mean time to reoperation was 7.7 ± 5 years. There were no procedure-related deaths in the short or long term.

      Conclusions

      BPD/DS offers sustainable long-term weight loss but is associated with important side effects that may be acceptable in selected patients with a high initial BMI (>50 kg/m2) and/or for nonresponders after primary restrictive procedures. Regular FU is necessary to detect and treat malnutrition and vitamin deficiencies.

      Keywords

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