Gastric Bypass with Roux-en-Y - A Weight Loss Surgery
This type of Weight Loss Surgery is simply termed as Roux-en-Y Gastric Bypass (as there are other types of gastric bypass surgeries too) or simply Gastric Bypass. In this type of weight loss surgery, the stomach is reduced to its size and a bypass is created from the reduced stomach to the small intestine. This surgery type is considered as the gold standard in all the weight loss surgery types available.
How is Gastric Bypass with Roux-en-Y performed?
Surgical Procedure in Gastric Bypass with Roux-en-Y
This process involves dividing the stomach into a smaller upper portion and the larger lower portion with the help of laparoscopic methods. The small upper portion that is connected to the food pipe at one end is reconstructed with a portion of the small intestine to the other end and is stapled to the small intestine bypassing the distal part of the stomach and a considerable length of the proximal intestine. In simpler terms, the lower large part of the stomach and early part of the small intestine is completely bypassed. Hence the name Gastric “Bypass”.
How is weight loss achieved in Gastric Bypass with Roux-en-Y
Weight loss by Gastric bypass with Roux-en-Y is achieved by both restrictive and mal-absorption methods. The reduced stomach and the reduced length of the small intestine play a vital role. Since the capacity of the stomach and the small intestine is reduced, the food consumption is greatly reduced which aids in weight loss. So the principles of restriction apply here. Since the distal part of the stomach and the considerable length of the small intestine are reduced, the actual digestion and absorption of the food take place in the distal part of the small intestine. One more important point is apart from food the nutrient absorption of the body is also greatly reduced. Hence mal-absorption of nutrients also takes place. For the body to get essential vitamins, it can be managed by daily intake of multivitamins. So in effect, the surgical procedure is a combination of both, restriction and malabsorption. It has been estimated that in two years the average weight loss achieved by Gastric Bypass with Roux-en-Y is close to 65-80%.