Efficacy of One-Anastomosis Gastric Bypass Versus Roux-en-Y Gastric Bypass for Gastroesophageal Reflux Disease: A Systematic Review and Meta-analysis of Randomized Controlled Trials.

This study aimed to investigate the efficacy of one-anastomosis gastric bypass (OAGB) on gastroesophageal reflux disease (GERD) compared with Roux-en-Y gastric bypass (RYGB) in patients with obesity. Three databases (Medline, Cochrane Central, and Scopus) were searched for relevant articles published until August 12, 2024. A total of nine randomized controlled trials, including 643 patients, were selected. OAGB was statistically significantly associated with a higher risk of GERD than RYGB (OR = 3.14, 95% CI 1.23-8.03, p < 0.05). The odds for de novo GERD after OAGB are almost six times higher than after RYGB (OR = 5.65, 95% CI 1.53-20.82, p < 0.05). RYGB has a lower incidence of de novo GERD cases and is more effective than OAGB in reducing GERD.