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|Step 5: Gastric bypass surgery|
Weight loss surgery involves one or both of the following approaches:
The next few steps explain some of the most common forms of weight loss surgery.
Gastric bypass surgery
Gastric bypass surgery uses both restriction and malabsorption to achieve weight loss. Roux-en-Y gastric bypass is the most common type of weight loss surgery performed.
In Roux-en-Y gastric bypass, staples are used to permanently close off part of the stomach. This leaves only a small stomach pouch for the food you eat. Additionally, a Y-shaped piece derived from an upper portion of the small intestine is then attached to this small stomach pouch. As a result, food from your stomach pouch bypasses the rest of the stomach and the first part of the intestine, which normally would absorb some calories and nutrients after eating.
Gastric bypass surgery can be performed using a traditional open technique or through laparoscopic surgery, depending on your circumstances and the decision of your surgeon. The traditional open technique involves an incision in the abdomen that allows the surgeon to visualize and access your stomach and intestine. Most gastric bypass surgery is done with laparoscopic surgery, which uses smaller incisions and a small video camera that projects views of your stomach and intestine onto a monitor in the operating room. Both methods are routinely performed. Talk to your doctor about these two approaches and which would be appropriate for you.
Not surprisingly, there are numerous other variations on the gastric bypass approach. (Click here to learn more about biliopancreatic diversion, and biliopancreatic diversion with duodenal switch.)
Biliopancreatic diversion takes longer than gastric bypass, and is technically more difficult. The complication rate is similar to gastric bypass when an experienced surgeon performs the procedure. After this operation, people can enjoy a wider variety of foods and eat about half as much as they did before the operation, without fear of experiencing dumping syndrome. In addition, calcium loss does not follow the duodenal switch. Although some behavioral change is still needed, this procedure may offer better quality of life for some people.
The benefits of gastric bypass surgery
The potential complications of gastric bypass surgery
The risks include, but are not limited to, the usual risks of any surgery (which involves general anesthesia), including problems with:
The risks from gastric bypass surgery include:
|The formation of gallstones is a possible risk following gastric bypass surgery.|
Although you may not be able to avoid all complications, here is how to minimize risks after surgery:
Richards WO. Morbid Obesity. In: Townsend Jr. CM, Beauchamp RD, Evers BM, Mattox KL. Sabiston Textbook of Surgery. 19th ed. Philadelphia,Pa: Saunders; 2012; chap 15.
Pontiroli AE, Morabito A. Long-term prevention of mortality in morbid obesity through bariatric surgery: A systematic review and meta-analysis of trials performed with gastric banding and gastric bypass. Ann Surg. 2011;253:484-487.
Reviewed By: Robert A. Cowles, MD, Associate Professor of Surgery, Yale University School of Medicine, New Haven, CT. Review provided by VeriMed Healthcare Network.