• Annals of surgery · Aug 2024

    Risk of Incident Cardiovascular Events Following Roux en Y Gastric Bypass versus Sleeve Gastrectomy: A Claims-Based Retrospective Cohort Study.

    • Kristina H Lewis, Stephanie Argetsinger, Robert F LeCates, Fang Zhang, David E Arterburn, Dennis Ross-Degnan, Adolfo Fernandez, and James F Wharam.
    • Department of Epidemiology & Prevention, Department of Implementation Science, Division of Public Health Sciences, Wake Forest University Health Sciences, Winston-Salem NC.
    • Ann. Surg. 2024 Aug 23.

    ObjectiveTo compare the risk of incident cardiovascular disease (CVD) events following sleeve gastrectomy (SG) and Roux en Y gastric bypass (RYGB).Summary Background DataBariatric surgery is associated with reduced CVD risk but the differential effect of contemporary bariatric procedures is unclear.MethodsWe used insurance claims to conduct a retrospective cohort study of CVD outcomes for patients who underwent RYGB versus SG between 2010 and 2021. Patients were followed for up to 5 years for a primary composite major adverse cardiovascular event (MACE) outcome as well as individual outcomes including myocardial infarction, stroke, heart failure, and arrhythmia. We compared cumulative risks of CVD events using multivariable Cox proportional hazards modeling, in overall cohorts and in sub-cohorts of older adults and those with type 2 diabetes (T2D) or pre-existing CVD and elevated morbidity.ResultsMatched, weighted cohorts of 13,545 SG and RYGB patients were observed for an average of 2.5 years after surgery, with 26.2% not lost to follow-up by the end of 5 years. There was no difference in MACE risk between procedures (aHR 1.01 for RYGB vs. SG [95% CI 0.90, 1.12]) in the overall cohort or among the subgroup of older adults (aHR 0.97 for RYGB vs. SG [95% CI 0.85, 1.10]). Patients with T2D experienced lower risk of MACE following RYGB compared to SG (aHR 0.78 [95% CI 0.66, 0.92]), as did those with pre-existing CVD or elevated morbidity prior to surgery (aHR 0.81 [95% CI 0.70, 0.93]).ConclusionsThese findings further support the preferential use of RYGB over SG for patients with T2D or who have pre-existing CVD. However, among other groups of patients, including older adults, we did not observe a relative benefit of RYGB during the time horizon in this study.Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.

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