Restrictive gastric operations, as vertical banded gastroplasty (VGB, for its acronym in English) serve only to restrict and decrease food intake and do not interfere with the normal digestive process.
In this procedure, the upper stomach near the esophagus is stapled vertically to create a small pouch along the inner curve of the stomach. Out of the pouch to the stomach using a band made of special material is restricted. The band delays the emptying of food from the pouch, causing a feeling of fullness.
Advantage:
The primary advantage of this restrictive procedure is that a small number of well-chewed food enters and passes through the digestive tract in the usual way.
This allows the nutrients and vitamins (and calories) be completely absorbed into the body.
After 10 years studies reveal that, In these cases, patients can maintain the sought reduction in overweight 50%.
The disadvantage is that the traditional method. so require an abdominal incision.