The Roux-En-Y Gastric Bypass can also be performed with the pouch divided vertically instead of stapling in continuity as described above. The divided stapled pouch prevents the chance of staple-line disruption since it is separated from the rest of the stomach. The lower portion of the pouch is encircled by a silastic ring or polypropylene (plastic) mesh band, which provides some restriction. The pouch outlet connects to the small bowel the same way as in Roux-En-Y Gastric Bypass, but the upper end of the roux limb is interposed between the pouch and bypassed stomach. Weight loss and risks of metabolic side effects are the same as for the Roux-En-Y Gastric Bypass. Uncommonly, the ring or band may erode into the pouch.
Gastric bypass patients typically lose 60 percent of excess weight in the first year following surgery. Many health problems (sleep apnea, high blood pressure, diabetes, back and joint pain, headaches, and depression) improve or are resolved following surgery. Surgical risks and benefits will be reviewed by your surgeon and the bariatric team.
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