The Duodenal Switch is also sometimes known as Bilio-Pancreatic Diversion with Duodenal Switch (BPD/DS) and its modified version SADI/S. The duodenal switch procedure involves the removal of a portion of the stomach, and the left “sleeve”-like stomach is attached to the final section of the small intestine. Patients can anticipate 60 to 80 percent total weight loss following this duodenal switch surgery.
The BPD/DS and the SADi-S are advanced procedures that require specialized training, education, and skills, making it only available by a select few surgeons around the world. Both procedures are a cross between the popular gastric sleeve and a gastric bypass – utilizing a combination of two weight loss mechanisms, restriction and malabsorption.
Restriction is achieved by cutting 70% of the stomach, which reduces hunger hormone levels known as Ghrelin. The malabsorption mechanism is achieved by “switching” the gastrointestinal tract, reducing the amount of food absorbed into the body.
The post-op diet is more strict because of the strict malabsorption component. Patients can expect very little food to be digested because of the significant portion of the intestinal bypass.
Nicola Scorpinaro, an Italian physician, is credited with founding the Biliopancreatic Diversion procedure more than forty years ago. Dr. Douglass Hess perfected the method in 1989 to reduce many of the DS complications associated with the version created by Scopinaro. It was in 2006 that duodenal switch surgery gained approval to be performed within the United States.