The duodenal switch (DS) is a weight loss operation that combines the sleeve gastrectomy's restrictive quality and the gastric bypass malabsorptive quality.
What is a duodenal switch?
Duodenal switch is a two-step surgery that works via several mechanisms throughout the gastrointestinal tract. Sleeve gastrectomy restricts food intake, reduces absorption, and alters the hormones of the gastrointestinal tract. This part of the operation also reduces ghrelin, a hunger hormone, increasing insulin sensitivity and fat utilization.
The second step, a duodenal ileostomy (SADI), disconnects the small bowel from the stomach to reconnect it lower on the system. This directs food that would typically go through the entire intestine and bypasses it to the end of the intestine. Generally, most patients with this surgery can maintain more significant weight loss over the long term.