With the Roux-en-Y gastric bypass, the weight loss is induced by the formation of a small gastric pouch (10 to 20 cc) that restricts the entry of food and by secondary malabsorption to the ¨salteo ¨ (Bypass) of a portion of the small intestine.
The gastric bypass is usually performed laparoscopically but there is the possibility of having to do it by conventional means, that is, by open surgery.
It is a newer technique than the Gastric Band and the Bypass. It consists of the removal of more than 2/3 of the stomach, creating a kind of gastric tube or "sleeve" that has a very low capacity to house food (100 to 120ml approximately). This surgery was originally conceived for patients with a Body Mass Index higher than 60 Kg / m2 with a very high surgical risk, as an initial stage for the subsequent realization of a definitive surgery.
»No adjustments required.
»No prosthesis used.
»No problems of absorption of vitamins and minerals.
»Less risk than Gastric Bypass.
»You can then perform another surgery such as bypass or duodenal crossing.
»There is no risk of stenosis or internal hernias. Disadvantages
»It is a major surgery if we compare it with the Gastric Band.
»Has potential risk of leaks such as Gastric Bypass.
»There is not as much long-term follow-up as the Gastric Bypass.
It is placed in the upper part of the stomach dividing it into two portions, the upper portion is much smaller than the lower portion. As the upper portion is smaller, the patient feels satisfied more quickly, with less food in each meal. It is a clearly restrictive procedure that is performed by laparoscopy.
The passage of food from the upper stomach to the lower one is adjusted, according to medical criteria, according to the characteristics of the patient. This adjustment is made through a reservoir that is placed under the skin. Digestion occurs normally, since the anatomy has not been modified by cutting or stapling the stomach or intestine.
»Restricts the amount of food consumed in a meal.
»Food passes through the digestive system in a normal way, allowing nutrients to be absorbed by the body.
»Do not cut your stomach or intestine.
»The Band allows to increase or decrease the adjustment according to the requirements of the patient.
»The surgery can be reversed Laparoscopically.
»Gastric perforation during surgery.
»Infection or loss of the adjustment reservoir.
»Nausea and vomiting during the post-surgical adaptation.
»Migration and / or sliding of the band.
»Dependence on band adjustments.
»Erosion of the stomach by the band.