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What is Roux-en-Y gastric bypass surgery?

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What is Roux-en-Y gastric bypass surgery?

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Roux-en-Y (pronounced ROO-en-why) gastric bypass surgery is the most popular bariatric surgery in the United States. In this procedure, the surgeon creates a small stomach pouch and then constructs a “bypass” of some of the small intestine. The smaller stomach pouch restricts the amount of food the patient can comfortably eat, and the bypass decreases the number of nutrients and calories absorbed.

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In a Roux-en-Y gastric bypass, the stomach is made smaller by creating a small pouch at the top of the stomach with surgical staples or a plastic band. The smaller stomach is connected directly to the middle portion of the small intestine, bypassing the rest of the stomach and the upper portion of the small intestine.

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The surgeon is able to reduce the size of the stomach from two fists down to the size of a thumb, with a row of staples. The stomach is able to hold less, so the patient feels full very quickly. A part of the small intestine is re-routed, or bypassed, and the pouch is connected with a small opening (anastomosis) to the small intestine, which slows the progression of food through the GI tract. The operation works in two ways: • Reducing food intake which creates a prolonged feeling of fullness • Producing mild malabsorption (your body doesn’t absorb as many calories) due to the bypassing of a portion of the small intestine. This type of surgery is performed under general anesthesia in the hospital and requires at least a two- to three-day hospital stay.

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