Duodenal Switch

In the duodenal switch, the surgeon removes 80% of the stomach, similar to the gastric sleeve procedure. It bypasses a portion of the small intestine, like the gastric bypass. However, rather than attaching the small stomach to the small intestine -- which is done with gastric bypass -- the stomach is connected to the duodenum, the first portion of the small intestine.

Minimally Invasive Duodenal Switch
Your surgeon may use different devices, such as magnets or robotic surgery, to reduce the number of incisions needed to perform a duodenal switch. This minimally invasive surgery approach:

• Shortens your hospital stay (typically one to two nights)
• Leaves small scars
• Helps you recover quickly and with less pain

Loop Duodenal Switch Alternative
Unlike the traditional duodenal switch, the loop duodenal switch, or SADI surgery, requires only one cut of the duodenal. A loop is created and attached to the stomach. Learn more about the loop duodenal switch. 

Eat Near "Normal" Meals
Your remaining stomach is larger after duodenal switch surgery than with gastric bypass, allowing you to eat larger meals.

Reduces the Absorption of Fat
Reduces the absorption of fat by 70% or more.

Favorable Changes to Gut Hormones
Reduces appetite and improves satiety.

Lower Ulcer Risk
There is a lower risk of developing marginal ulcers when compared to gastric bypass.

Bypassing a larger portion of the small intestine results in more weight loss than gastric bypass, but it also makes it difficult for the body to absorb nutrients. This can result in complications that can be avoided or minimized through regular follow-up visits with your bariatric team.

Serious Vitamin Deficiencies and Malnutrition Issues
People who undergo a duodenal switch must take more vitamins than those who have gastric bypass. The increased vitamin requirement can cost more than with other weight loss surgeries. Maintaining a regular schedule of follow-up visits is also very important, as malnutrition issues can be permanent if medical advice and nutrition guidance is ignored.

Loose Bowels and Foul-Smelling Gas
Can occur if dietary guidelines are not followed. Two to three bowel movements a day are common among people who undergo a duodenal switch.

Higher Technical Complexity
This complex surgery requires the skills of an experienced surgeon to minimize the risk of complications. Duke bariatric surgeons have performed duodenal switches with positive outcomes for more than 20 years.