Weight Loss, Comorbidity, and Complications After Single-anastomosis Sleeve Ileal Bypass (SASI): A Systematic Review and Meta-analysis
Abstract
Single anastomosis sleeve ileal (SASI) bypass combines sleeve gastrectomy with intestinal bipartition to promote weight loss and metabolic improvement. We conducted a systematic review and meta-analysis comparing SASI with sleeve gastrectomy (1 RCT and 4 non-randomized comparative studies (NRCTs)), one-anastomosis gastric bypass (2 RCTs, 4 NRCTs), and Roux-en-Y gastric bypass (2 NRCTs), regarding weight loss, metabolic and nutritional outcomes, and adverse effects. Certainty of evidence was assessed with GRADE for 1-year outcomes. Twenty-six studies (1603 patients) were included, mostly reporting 12-month results. Pooled single-arm analysis from 11 studies showed mean total weight loss of 35.9 kg (95% CI 33.3-38.5). The certainty of evidence ranged from low to very low, limiting confidence in the results and emphasizing the need for high-quality RCTs.
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 1,603 participants or records.
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