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Single Anastomosis Stomach–Ileal Bypass with Sleeve Gastrectomy FAQs

Single Anastomosis Stomach–Ileal Bypass with Sleeve Gastrectomy, or SASI-S as it is commonly known, is a modified and safer version of SADI-S. SASI-S combines the benefits of both intestinal bypass and sleeve gastrectomy to effectively treat morbid obesity. During the procedure, a large portion of the stomach is removed in order to reduce one’s capacity to eat and to reduce one’s level of ghrelin (the hunger hormone), while the bottom part of the stomach (antrum) is joined to the distal small bowel (ileum) so that food bypasses part of the small intestine. This works by reducing the number of fats, sugar and calories that are absorbed by the body.

According to studies, the SASI-S procedure is able to provide greater weight loss than either a standard sleeve gastrectomy or gastric bypass procedure. SASI-S is safer than SADI-S due to fewer staple lines and only one join, so less risk of an internal hernia. SASI-S has fewer nutritional deficiencies such as iron as the duodenum is not excluded. Endoscopy to check on the stomach and duodenum is possible after SASI-S, the only bypass to allow this.

The SASI-S procedure may increase the risk of bile reflux into the stomach. Dr Dolan will advise you as to whether SASI-S is the best option for you, depending on your particular circumstances and health condition. He will also let you know about any other options available to you.