Abstract

Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder exacerbated by obesity. Single Anastomosis Sleeve-Ileal Bypass (SASI) has emerged as a promising metabolic bariatric procedure that combines sleeve gastrectomy and ileal bypass, facilitating substantial weight loss and T2DM remission through restrictive and malabsorptive mechanisms. This study aims to evaluate the effects of SASI on T2DM remission, weight loss, and safety in one year follow-up. A retrospective cohort study analyzed 31 patients with obesity and T2DM who underwent SASI. Data collected included demographic characteristics, preoperative and postoperative BMI, HbA1c levels, and bariatric outcomes, including %TWL and T2DM changes. The mean age was 45 years, with a mean preoperative BMI of 40.7 kg/m². One year postoperatively, the mean %EWL was 85.6% and %TWL was 31.7%. T2DM remission was achieved in 24 (77.4%) patients, improvement in 4 (12.9%), and no change in 3 (9.7%). Hypertension improved in 21 (87.5%) patients, with 12 (50%) achieving remission. Significant reductions in BMI and HbA1c levels were observed (p < 0.001). Responders (R) and non-responders (NR) groups showed significant differences in postoperative BMI and %EWL (p = 0.007, p = 0.023). One patient experienced a Clavien-Dindo Grade III complication; no deaths occurred. SASI is an effective and safe procedure for treating T2DM, resulting in significant weight loss and metabolic improvements over a one-year follow-up. SASI seems to be a favorable option for T2DM management in metabolic bariatric surgery.

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