A Retrospective Multicenter Comparison of Laparoscopic and Robotic-Assisted Roux-en-Y Gastrectomy

The RYGB connects a limb of the intestine to a much smaller stomach pouch, which prevents the bile from entering the upper part of the stomach and esophagus, thereby effectively bypassing the remaining stomach and first segment of the small intestine.

"The SG is a restrictive procedure in which a partial left gastrectomy of the fundus and body of the stomach is performed in order to create a long tubular sleeve along the lesser curvature. The weight loss and resolution of comorbidities are attributed not only to the restrictive nature of the procedure but also to restriction by the pylorus, decreased ghrelin, increased satiety, increased gastric emptying, and faster small bowel transit times with a component of malabsorption"