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Updated: May 29, 2026

One-anastomosis Gastric Bypass (OAGB) in Rats
Published on: November 10, 2018
Long-term follow-up in patients undergoing open gastric bypass as a revisional operation for previous failed
Jakob Hedberg1, Sven Gustavsson, Magnus Sundbom
1Department of Surgical Sciences, Uppsala University, Uppsala, Sweden. jakob.hedberg@surgsci.uu.se
Background:
We have previously described our early experience with Roux-en-Y gastric bypass (RYGB) as a revisional procedure. The favorable results have stimulated us to continue using RYGB as our standard operating procedure after failed bariatric surgery. Our objective was to evaluate the perioperative risks, weight result, and abdominal symptoms 5 years after revisional RYGB surgery at a university hospital in Sweden.
Methods:
We studied 121 patients undergoing revisional open RYGB (age 42.0 yr, body mass index 37.7 kg/m(2), 101 women) 5 years after RYGB surgery. The patients underwent reoperation because of either intolerable side effects or inferior weight loss. The initial procedures were horizontal gastroplasty (n = 2), vertical banded gastroplasty (n = 34), gastric banding (n = 21), and silicone adjustable gastric banding (n = 64). The mean interval between the first surgery and revision was 5 years. The 5-year follow-up data were obtained annually using a questionnaire survey.
Results:
The average operating time was 162 minutes (range 75-355). In these 121 cases, 10 (8%) reoperations were performed in the first 30-day period (4 for leakage). No perioperative mortality occurred, and the 5-year follow-up rate was 91%. The mean body mass index was 30.7 kg/m(2). Seven patients (5.7%) had undergone subsequent surgery because of complications. At follow-up, 93% reported being very satisfied or satisfied with the revisional procedure. Disturbing abdominal symptoms after RYGB were rare.
Conclusion:
The perioperative risks of revisional RYGB are greater than those for primary RYGB. However, because the long-term weight results and patient satisfaction are very good, we believe that the 8% reoperative rate is acceptable. We consider RYGB to be a suitable procedure for patients in whom previous bariatric procedures have failed.

