Single Anastomosis Duodenal-Ileal Bypass With Sleeve (SADI-S)

What is SADI-S surgery?

The Single Anastomosis Duodenal-Ileal Bypass with Sleeve (SADI-S) combines sleeve gastrectomy with intestinal bypass to promote greater weight loss with a single surgical connection. This procedure is irreversible. 

Why might I need SADI-S weight-loss surgery?

SADI-S surgery is used to treat severe obesity. It’s advised for people who have tried other weight-loss methods without long-term success. Your health care provider may advise SADI-S surgery if you have a body mass index (BMI) over 40. Your provider may also advise it if you have a BMI between 35 and other related health conditions like sleep apnea, high blood pressure, heart disease, or Type 2 diabetes. 

Patients must complete other weight-loss efforts before qualifying for SADI-S surgery. This usually includes documented attempts at diet, exercise, or prescription medications. The average patient who undergoes SADI-S loses up to 60-80% of their excess body weight. 

What are the risks of SADI-S weight-loss surgery?

This is a newer operation with only short-term information on postoperative risks and results. Much like the gastric bypass and sleeve gastrectomy, patients can have respiratory problems, leaking, hernias, bowel obstructions, ulcers, intolerance to certain foods, and nutritional deficiencies. Patients must take special vitamins for the rest of their lives.

Saint Luke’s surgeons perform almost all of their procedures laparoscopically. Laparoscopy is a minimally invasive method requiring much smaller incisions than traditional open surgery. This leads to less pain, a shorter hospital stay, and fewer complications.

What happens during SADI-S surgery?

• A tube-shaped sleeve is created, reducing the size of the stomach by around 80%.
• The upper portion of the small intestine (the duodenum) is separated just below the stomach and reattached to the lower section of the small intestine.
• This shortens the intestine by about half and decreases calorie absorption.
• The SADI-S procedure is designed to prevent ulcers, reduce stomach size, minimize the chances of dumping syndrome, and reduce the severity of protein-calorie malnutrition.