The surgery is done under general anesthesia. Then the surgeon will open 5 to 6 incisions in the abdomen and cut of a large portion of the stomach by the help of a scope with a tiny camera at the end of it which gives the surgeon visual access to the area. this procedure takes 1-2 hours
However, some patients may not be able to undergo this surgery if they suffer from sever heart failure, portal hypertension, active cancer or other health issues. your doctor will evaluate your condition and decide whether this procedure is possible for you or not.