Adjustable Gastric Banding Conversion to One Anastomosis Gastric Bypass: Data Analysis of a Multicenter Database

Juan Pujol-Rafols*, Ozlem Uyanik, Yuhamy Curbelo-Peña, Amr Al Abbas, Stefanie Devriendt, Anabela Guerra, Miguel F. Herrera, Jacques Himpens, Eva Pardina, Sjaak Pouwels, Almino Ramos, Rui J. Ribeiro, Bassem Safadi, Hugo Sanchez-Aguilar, Claire E. E. de Vries, Bart van Wagensveld

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Introduction: One anastomosis gastric bypass (OAGB) has been proposed as a rescue technique for laparoscopic adjustable gastric banding (LAGB) poor responders. Aim: We sought to analyze, complications, mortality, and medium-term weight loss results after LAGB conversion to OAGB. Methods: Data analysis of an international multicenter database. Results: One hundred eighty-nine LAGB-to-OAGB operations were retrospectively analyzed. Eighty-seven (46.0%) were converted in one stage. Patients operated on in two stages had a higher preoperative body mass index (BMI) (37.9 vs. 41.3 kg/m 2, p = 0.0007) and were more likely to have encountered technical complications, such as slippage or erosions (36% vs. 78%, p < 0.0001). Postoperative complications occurred in 4.8% of the patients (4.6% and 4.9% in the one-stage and the two-stage group, respectively). Leak rate, bleeding episodes, and mortality were 2.6%, 0.5%, and 0.5%, respectively. The final BMI was 30.2 at a mean follow-up of 31.4 months. Follow-up at 1, 3, and 5 years was 100%, 88%, and 70%, respectively. Conclusion: Conversion from LAGB to OAGB is safe and effective. The one-stage approach appears to be the preferred option in non-complicate cases, while the two-step approach is mostly done for more complicated cases.

Original languageEnglish
Pages (from-to)1147-1153
Number of pages7
JournalJournal of Gastrointestinal Surgery
Issue number6
Early online date2022
Publication statusPublished - Jun 2022

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