The biliopancreatic diversion with duodenal switch (BPD/DS) is a less-common weight-loss procedure that involves two major steps.
The first step is a sleeve gastrectomy in which about 80 percent of the stomach is removed, leaving a tube-shaped stomach similar to a banana. The pyloric valve, which releases food into the small intestine, remains, as does a small portion of the small intestine that normally connects to the stomach (duodenum).
By connecting the end of the intestine to the duodenum near the stomach, the second step bypasses the majority of the intestine. Proteins and fats are less easily absorbed by patients with BPD/DS.
Single Anastomosis Duodenal Switch
This surgery utilizes both gastric reduction and intestinal malabsorption to achieve weight loss. The first part of the procedure is reducing the size of the stomach similar to a gastric sleeve procedure. After the sleeve, the intestines are rerouted similar to a gastric bypass. The principle measured length is the common channel. This is the distance from where bile and food meet to the end of the intestines and determines the amount of absorption. It is a proven method for losing weight and improving weight-related health problems.