Summarize the risks and relative success of three types of bariatric procedures for the treatment of severe obesity

Answer 1

The types of procedures are
• Gastric bypass: Surgeons create an egg-sized pouch with staples and reroute food around part of the upper intestine to block absorption of calories and nutrients. About 75 percent of bypass patients lose 50 to75 percent of their excess weight within two years. For the "super obese," a more extensive procedure that bypasses most of the small intestine can lead to a loss of 80 percent of excess weight. However, the latter procedure carries the highest risks of complications, including serious vitamin and mineral deficiencies.
• Banding: In this newer, less risky procedure,surgeons slip an inflatable silicon band around the stomach; it can be tightened or loosened at a doctor's office without the need for further surgery. Patients lose about 40 to 55 percent of excess weight but may be more likely to regain lost pounds. The band also may slip or erode.
• Duodenal switch: Duodenal switch or biliopancreatic diversion, a more extensive operation that removes a portion of the stomach and bypasses a large portion of the small intestine, may lead to greater long-term weight loss but carries a risk of more complications.