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Duodenal Switch

The Bariatric Experts™

Bariatric and Minimally Invasive Surgery located in Frisco, TX & Abilene, TX

Duodenal Switch Q&A


Just like the SADI-S the Duodenal Switch starts with creating a Sleeve Gastrectomy, though the Sleeve is slightly looser than tradition. The second step is the same as SADI-S in which the small bowel is divided and then reconnected further downstream. How it differs from a SADI-S though is in which a third step is performed to once again divide and reconnect the bowel. In this way it is similar to having a Gastric Bypass performed. The end result is in which digestion then occurs in the last part of the small bowel and this part is only about 6 feet long. Traditionally up to 20% of patients can have some nutritional issues. Dr. Peery leaves this last portion longer than was originally recommended. Yes this may result in slightly less weight loss but also results in significantly less nutritional issues and less loose stools.



  • Among the best results for weight loss.
  • Affects bowel hormones to cause less hunger and more fullness after eating.
  • It is the most effective procedure for treatment of type 2 diabetes.



  • Rare complications include infection, hernias, ulcers, or bleeding. 
  • Slightly higher complication rates than sleeves but appears similarly to that of gastric bypass.
  • Results in higher hypoabsorption compared to the other surgeries therefore a greater possibility of vitamins and mirco-nutrient deficiencies.
  • Reflux and heartburn can develop or get worse in a small number of patients.
  • Risk of looser and more frequent bowel movements.
  • More complex surgery requiring more operative time.


Expected Weight Loss After a Bypass 

  • You can expect to lose up to 85% of excess body weight.