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Conversions of Roux-en-Y gastric bypass to duodenal switch (SADI-S and BPD-DS) for weight regain

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Abstract

Background

Duodenal switch is a choice of conversion when patients fail to lose or regain weight after Roux-en-Y gastric bypass (RYGB). This study aims to evaluate the effectiveness and safety of duodenal switch as a secondary operation for patients who presented with insufficient weight loss or weight regain after a RYGB.

Methods

A retrospective chart review was performed on 15 patients who underwent a conversion of RYGB to single anastomosis duodeno-ileal bypass with sleeve (SADI-S) or biliopancreatic diversion with duodenal switch (BPD-DS) due to weight regain between December 31, 2013 and October 31, 2018. For the body mass index (BMI) analysis, the multilevel model for change was used.

Results

Of 15 patients, 10 underwent a conversion to SADI-S, and 5 underwent a conversion to BPD-DS. Also, 7 patients underwent the conversion in two-stages, while 8 did as single-stage. One patient had a duodenal stump leak after SADI-S, and another patient had a sleeve leak after BPD-DS. One patient underwent a reoperation to increase the common channel 20 months after the conversion to BPD-DS due to malnutrition. There was no mortality. Mean percentage of total weight loss (TWL) was 18.4% at 6 months, 25.0% at 12 months, 26.4% at 18 months, and 25.7% at 24 months after the conversion. The rate of decrease in BMI was slower in SADI-S patients than in BPD-DS patients (p < 0.01), adjusting for preoperative BMI.

Conclusion

Conversions of RYGB to SADI-S and BPD-DS can provide significant additional weight loss. However, complications and malnutrition can develop after the conversion, and further research is needed for evaluating safety.

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Authors and Affiliations

  1. Department of Bariatric Surgery, Orlando Regional Medical Center, Orlando Health, 89 W Copeland Dr, 1st Floor, Orlando, FL, USA

    Rena C. Moon, Layth Alkhairi, Alyssa Jameson Wier, Andre F. Teixeira & Muhammad A. Jawad

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  1. Rena C. Moon
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  2. Layth Alkhairi
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  3. Alyssa Jameson Wier
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  4. Andre F. Teixeira
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  5. Muhammad A. Jawad
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Corresponding author

Correspondence to Muhammad A. Jawad.

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Disclosures

Dr. Teixeira is a consultant for Intuitive Surgical and Ethicon Endo-surgery. Dr. Jawad is a consultant for Ethicon Endo-surgery. Dr. Moon, Mr. Alkhairi, and Dr. Wier have no conflicts of interest or financial ties to disclose.

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Moon, R.C., Alkhairi, L., Wier, A.J. et al. Conversions of Roux-en-Y gastric bypass to duodenal switch (SADI-S and BPD-DS) for weight regain. Surg Endosc 34, 4422–4428 (2020). https://doi.org/10.1007/s00464-019-07219-6

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  • DOI: https://doi.org/10.1007/s00464-019-07219-6

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