Vertical banded gastroplasty is a surgical weight loss procedure where the upper part of the stomach is vertically stapled so that a small pouch of about 30ml is created. This pouch is then connected to the rest of the stomach through a small outlet (known as a stoma) of about 1cm width. A band made of silicone is then placed around the outlet as a reinforcement to prevent it from widening. The pouch restricts the amount of food that can be eaten at one time because of the slow passage of the food into the remaining stomach which subsequently helps maintain a feeling of fullness and leads to the loss of weight.
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