Laparoscopic One-Anastomosis Gastric Bypass with Band-Separated Gastric Pouch (OAGB-BSGP): a Randomized Controlled Trial

Obes Surg. 2019 Dec;29(12):4131-4137. doi: 10.1007/s11695-019-04236-1.

Abstract

Background: One-anastomosis gastric bypass with band-separated gastric pouch (OAGB-BSGP) is a novel "staplerless" version of OAGB. This randomized controlled trial (RCT) compared 2-year outcomes for OAGB-BSGP and standard OAGB.

Methods: The parallel-group RCT randomly allocated patients to group A, staplerless OAGB-BSGP, or group B, stapled OAGB.

Results: Respective mean values for groups A and B (n = 40 each): baseline body mass index (BMI, kg/m2), 40.6 ± 5.6 vs 41.2 ± 6.4 (p = 0.64); abdominal bleeding (mL), 5.9 ± 8.0 vs 31.1 ± 30.5 (p < 0.0001). Two-year outcomes: BMI, 26.3 ± 3.2 vs 29.0 ± 4.7; %TWL, 34.1 ± 9.0 vs 29.3 ± 10.6, p < 0.03; %EBMIL, 94.3 ± 23.6 vs 77.9 ± 29.3, p < 0.007; bile reflux, n = 1 (2.5%) vs n = 7 (17.5%) (p = 0.05); revisions, n = 0 vs n = 4 (10.0%), p = 0.12.

Conclusions: At 2-year RCT follow-up, staplerless OAGB-BSGP patients had fewer complications, no revisions, and greater weight loss than stapled OAGB patients.

Trial registration: ISRCTN56106651 (OSPAN-RCT).

Keywords: Band-separated gastric pouch; Laparoscopic; Mini gastric bypass; Obesity; One-anastomosis gastric bypass; Ospanov procedure; RCT; Randomized controlled trial; Staplerless gastric pouch.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bile Reflux / etiology
  • Body Mass Index
  • Female
  • Follow-Up Studies
  • Gastric Bypass / methods*
  • Humans
  • Laparoscopy*
  • Male
  • Prospective Studies
  • Reoperation / statistics & numerical data
  • Weight Loss

Associated data

  • ISRCTN/ISRCTN56106651