This is the most common gastric bypass. The restrictive and malabsorption techniques are both used.
This procedure consists of separating a large portion of the stomach. The part of the stomach that stores food ends up being approximately 20cc. Because of this reduction, the amount of food the patient will be able to eat and drink will be greatly restricted.
After doing this reduction, the lower part of the small intestine is connected to the small stomach pouch that will receive the food. This procedure reduces the area the small intestine has to absorb nutrients because the surgery excludes the portion were fats and sugars are absorbed. The duodenum follows the large pouch of the stomach that was separated. This is connected to the part of the intestine that receives the food at the lowest point. During surgery a “Y” is formed. This is why the surgery is known as Roux en “Y”
This surgery provides excellent results, providing patients with a weight loss of over 85% in most cases.