Type of Surgery
Information
Last updated: 11/24/2009
In the years following surgery, patients often regain some of the lost weight. But few patients regain it all. Of course, diet and activity level after surgery also play a role in how much weight a patient may ultimately lose. Results from long-term follow-up data of gastric bypass surgery show that over a five-year period, patients lost 58% of their excess weight. Over 10 years, the loss was 55%, and after 14 years, excess weight loss was 49%. While there is a tendency to slowly regain some of the lost weight, there is still a significant permanent weight loss over a long period of time.
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This animation describes the three main types of bariatric surgery. Topics covered include gastric bypass surgery, adjustable gastric banding, and sleeve gastrectomy.
In this Roux-en-Y gastric bypass, a large incision is made down the middle of the abdomen (A).The stomach is separated into two sections. Most of the stomach will be bypassed, so food will no longer go to it. A section of jejunum (small intestine) is then brought up to empty food from the new smaller stomach (B). Finally, the surgeon connects the duodenum to the jejunum, allowing digestive secretions to mix with food further down the jejunum. (Illustration by GGS Inc.)
Other Information
Gastric bypass procedures (GBP) are any of a group of similar operations used to treat morbid obesity—the severe accumulation of excess weight as fatty tissue—and the health problems (comorbidities) it causes. Bariatric surgery is the term encompassing all of the surgical treatments for morbid obesity, not just gastric bypasses, which make up only one class of such operations.
A gastric bypass first divides the stomach into a small upper pouch and a much larger, lower "remnant" pouch and then re-arranges the small intestine to allow both pouches to stay connected to it. Surgeons have developed several different ways to reconnect the intestine, thus leading to several different GBP names. Any GBP leads to a marked reduction in the functional volume of the stomach, accompanied by an altered physiological and psychological response to food. The resulting weight loss, typically dramatic, markedly reduces comorbidities. The long-term mortality rate of gastric bypass patients has been shown to be reduced by up to 40%; however, complications are common and surgery-related death occurs within one month in 2% of patients.
Other Information
Because surgeons are not required to register with any medical agency, there is no precise number. However, the American Society for Bariatric Surgery reports current 2006 membership at 1500.
From: National Association for Weight Loss Surgery
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