Loop-Duodenal Switch (SADI-S / SIPS)
The Loop Duodenal Switch (loop DS), also known as SADI-S or SIPS, is a promising bariatric procedure that has evolved in recent years. It takes into account modern surgical concepts but also the latest nutritional research by combining a moderate restriction (reduced portion sizes) of a sleeve gastrectomy with a moderate malabsorption (bypassed small bowel). The surgeon first performs a sleeve gastrectomy. Secondly, just after the junction of the stomach and the small bowel (pylorus), the food passage is redirected and enters further downstream, bypassing the upper small bowel and leaving three metres of small bowel for absorption of nutrients before entering the large bowel.
Hospital stay: about 3-5 days
Weight loss: about 85-95% of excess weight in 5 years. (Importantly, the extent of weight loss varies for each individual and cannot be guaranteed). Most of the weight loss happens within the first 18 months after surgery.
Like gastric bypass surgery, the Loop-DS induces hormonal changes which can have significant positive effects on type 2 diabetes. The Loop-DS is powerful procedure to improve or achieve long-term remission of type 2 diabetes, high blood pressure and high cholesterol. Other benefits include less risk of gastric ulcers and internal hernia compared to gastric bypass. The Loop-DS is best suited to patients who have a high body mass index (BMI), type 2 diabetes or have previously undergone unsuccessful gastric sleeve or lap band surgery.
Safety-wise, the Loop-DS has a complication rate comparable to a sleeve gastrectomy or Omega loop (Single anastomosis) bypass. Dumping, which occurs after having a sugary drink following gastric bypass surgery, is unusual after a Loop-DS, however heartburn is seen more often compared to gastric bypass surgery. As for all weight-loss operations, it is highly recommended to take multivitamins regularly in the long-term and have regular blood tests to make sure the body stays healthy.