SASI is one of the most recent types of gastric bypass operations, and it has been called by this name because it is through which the path of food entering the stomach is divided into two tracks:
The first track is the usual food route.
The second food pathway is from the stomach to the end of the small intestine directly, bypassing a large portion of the bowel space.
Laparoscopic SASI bypass involves performing two simultaneous procedures, namely gastric sleeve, and gastric bypass, where the process is divided into two stages:
The first stage: It is called (gastrectomy), in which approximately 80% of the stomach volume is cut, including the interior of the stomach.
The second stage: It is called (gastric bypass) that takes place in conjunction with the first stage, in which a link or path is made between the stomach and the small intestine, resulting in determined and reduced food amount, which leads to a reduced amount of food absorbed from the body.