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Introduction: To assess the medium-term weight loss and maintenance of lean body mass (ideal weight/weight loss maintenance) following the Roux-en-Y gastric bypass (RYGB) surgical procedure with or without the use of a rigid gastric ring. Method: An observational cohort study with a retrospective approach was conducted to evaluate the effectiveness of RYGB with and without a band in patients with morbid obesity. The outcomes were assessed by analyzing data obtained from medical records, including pre- and postoperative data. Results: A total of 239 patients who underwent surgery between 2001 and 2018 were included, with 150 undergoing RYGB without a ring and 89 using a ring. The group subjected to the intervention with a rigid ring showed a significantly higher average body mass index loss than the ringless group (coefficient -2.45; 95% confidence interval [CI]: [-3.92 to -0.97], P < .001) at 1 year. After a follow-up period of 5 years, the use of a gastric ring was still associated with significant improvement in weight loss, even after multivariate adjustment (coefficient 6.62, 95% CI: [+ 4.30 ± 8.95], P < .001). Less than 5% of patients needed gastric band removal during the follow-up period. Conclusion: In this retrospective cohort of 239 patients, using a ring in RYGB was associated with a significant increase in weight loss and maintenance of lean body mass.

Background: We previously described sleeve gastrectomy with jejunoileal bypass (SGJIB) as promising novel technique for the surgical treatment of obesity Methods: A retrospective analysis of a prospective database in a Private Practice of Alimentary Tract Surgery in São Paulo, Brazil. We analyzed 176 patients with 60 months of follow-up, 74 of whom underwent Vertical Sleeve Gastrectomy with Jejunoileal Bypass (VSG-JIB) (50 women and 24 men) with a mean age of 38 years and a mean body mass index (BMI) of 40 kg/m 2 , and 102 patients underwent Roux-en-Y gastric bypass (RYGB) (90 women and 12 men) with a mean age of 36.5 years and a mean BMI of 39.73 kg/m 2 . Results: There was no statistically significant difference in long-term weight loss between the two groups. The rate of postoperative complications immediately after surgery was similar, but there was a tendency toward less severe complications in the SGJIB cohort. Conclusion: Sleeve gastrectomy with jejunoileal bypass is a novel surgical procedure for weight loss with comparable efficacy and safety compared with laparoscopic RYGB.