A Multi-institutional Study on the Mid-Term Outcomes of Single Anastomosis Duodeno-Ileal Bypass as a Surgical Revision Option After Sleeve Gastrectomy

IntroductionRecently, a single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) has become increasingly popular for patients with BMI>50 as a primary or staged surgery. Staging allows surgeons to do the sleeve gastrectomy (SG) first with the conversion only happening when a failure or technical challenge is identified.PurposeWe present the mid-term outcomes of SADI bypass surgery after SG.MethodA retrospective analysis was performed on a prospective database from four institutions. Ninety-six patients were identified from 2013 to 2018. Patients were divided into two groups: one had two-stage SADI because of insufficient weight loss, the second had planned two-stage SADI because of super obesity (BMI>50 kg/m(2)). Incidence of complications was divided into <30 days and >30 days.ResultOf 96 patients, 3 patients were completely lost to follow-up. The mean age was 44.811.3 years. There were no deaths or conversion to open surgery. The postoperative early complication and late complication rate was 5.3% and 6.4% respectively. At 24 months, group 2 had higher %weight loss (WL) and change in BMI units compared to group 1 with statistically significant difference. The average WL and change in BMI for entire patient's population at 24 months after 2nd stage SADI was 20.5% and 9.4 units respectively. The remission rate for DM was 93.7% with or without the use of medication.ConclusionThe two-stage approach to SADI-S appears technically simpler than a single compromised operation. However, this approach needs more patients to understand its limitations.