Impact of Sleeve Gastrectomy Volumes on Weight Loss Results: A Prospective Study

Abstract Background Causes of weight loss failure after sleeve gastrectomy (SG) are still controversial. The impact of the size of the sleeve continues to be debated. Objectives The aim of our study was to determine the impact of sleeve volumes assessed at 3 months using gastric computed tomography (CT) on weight loss at 18 months. Setting University Hospital, France. Methods Sixty-seven obese patients eligible for SG were prospectively evaluated. Sleeve volumes were assessed post surgery using 3-dimensional gastric CT with gas at 3 months and weight loss outcomes recorded up to 18 months. The population was divided into two groups: the first tertile (n=22) with the smallest gastric volume was defined as the “small sleeve” group (SSG) and the rest of the population (n= 45) was defined as the “without small sleeve” group (WSSG). Results There was no lost to follow-up. In the SSG, overall gastric volume was 133±7 mL vs. 264±11 mL for the WSSG (p