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Background: Type 2 diabetes (T2D) is frequently present in Metabolic and Bariatric Surgery (MBS) patients and is associated with increased morbidity and mortality. Organ transplantation patients also suffer from severe obesity and are now increasingly undergoing MBS., Objective: To determine the association of T2D and perioperative outcomes after MBS in previous solid organ transplantation patients SETTING: University Hospital, United States., Methods: Patients with a history of solid organ transplantation undergoing sleeve gastrectomy and Roux-en-Y gastric bypass were identified from the 2017 Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program database. Patients were then stratified by a history of T2D. Propensity-score matching was performed between the 2 cohorts. Outcomes were compared by Mann-Whitney U, Χ 2 , and multivariable logistic regression analysis for overall and morbidity related to MBS., Results: Before matching 338 patients with a prior history of solid organ transplantation were identified including 132 (39%) with and 206 (61%) without diabetes. There were no significant differences in outcomes between the 2 cohorts at baseline, but these patients were significantly different at baseline. After matching, 85 patients with and without T2D were identified. Overall and morbidity related to MBS were similar (P > .5). Furthermore, multivariable logistic regression revealed T2D to not have an increased risk for overall (odds ratio .95, P = .09) or morbidity related to MBS (odds ratio .92, P = .87)., Conclusion: MBS in T2D patients with previous solid organ transplantation is overall safe with low rates of morbidity and mortality. Diabetes was not an independent predictor of adverse outcomes in this cohort of patients. Larger cohort studies are needed., (Copyright © 2020 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.)

Introduction: Obesity is a risk factor for poor patient outcomes after organ transplantation (TXP). While metabolic and bariatric surgery (MBS) is safe and effective in treating severe obesity, the role of MBS in transplant patients continues to evolve., Methods: A retrospective analysis was performed of sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) patients in the 2017 Metabolic and Bariatric Surgery Accreditation Quality and Improvement Project (MBSAQIP) database. Propensity and case-control matching, and multivariable logistic regression were performed for 30-day post-operative outcomes., Results: A total of 336 transplant patients were compared with 157,413 patients without transplant. Propensity and case-control matching reveal no significant differences in mortality (p > 0.2). However, case-control matching revealed longer operative time (104 min versus 76 min, p < 0.001), increased length of stay (2 days versus 1 day, p < 0.05), perioperative transfusions (2% versus 0.22%, p = 0.009), and leak rates (2.2% versus 0.55%, p = 0.02) in the transplant cohort. On multivariable regression analysis, prior transplantation was associated with higher rates of overall (OR 1.6, p = 0.007) and bariatric-related morbidity (OR 1.78, p = 0.004), leak (OR 3.47, p = 0.0027), and surgical site infection (OR 3.32, p = 0.004). Prior transplantation did not predict overall (p = 0.55) nor bariatric-related mortality (p = 0.99)., Conclusion: MBS in prior solid organ transplantation patients is overall safe, but is associated with increased operative time and length of stay, as well as higher rates of some post-operative morbidity.