Which of the following are three malabsorptive procedures?

The answer is correct because SADI-S (Single Anastomosis Duodeno-ileal Bypass with Sleeve Gastrectomy), BPD/DS (Biliopancreatic Diversion with Duodenal Switch), and RYGB (Roux-en-Y Gastric Bypass) are all recognized malabsorptive procedures.

Malabsorptive surgery alters the digestive and absorptive processes to promote weight loss by changing how food is absorbed in the gastrointestinal tract. In the case of SADI-S, there is a reconfiguration of the intestines that significantly reduces nutrient absorption while maintaining some anatomical aspects of the stomach. BPD/DS is one of the most effective malabsorptive procedures, combining sleeve gastrectomy with significant diversion of the intestines to limit nutrient absorption. RYGB also creates a small gastric pouch and bypasses a significant portion of the small intestine, leading to the malabsorption of calories and nutrients.

The other procedures mentioned in the incorrect options, such as VSG (Vertical Sleeve Gastrectomy) and LAP-BAND (adjustable gastric banding), primarily work through restrictive mechanisms rather than malabsorption. These treatments limit the intake of food without altering the digestive process significantly, hence, they do not qualify as