Single Anastomosis Duodenal Ileal Bypass (SADI) for Sleeve Revision

The purpose of the research is to study additional weight loss and resolution of comorbidities in patients who undergo revision of their sleeve gastrectomy to a Single Anastomosis Duodenal Ileal bypass (SADI). The sleeve gastrectomy which you have already undergone is now the most common bariatric procedure performed. This operation was part of a 2-stage operation known a Duodenal Switch (DS) which was a sleeve gastrectomy followed by a long bypass of the intestine that involved 2 connections. This operation has many complications such as vitamin deficiencies and potential malnutrition. The SADI procedure is a version of the DS that bypasses less of the intestine and one less connection of the small bowel.