Roux en Y (RNY) or gastric bypass is a restrictive procedure that staples off an approximate ½-1 ounce stomach pouch at the upper portion of the stomach. A section of small bowel is then attached to the pouch via a small opening, which is to simulate the pyloric valve.
The pyloric valve is bypassed in this procedure. Because of the small pouch size, vomiting can take place if food is not properly chewed or food is eaten too fast or too large a volume. Dumping syndrome is also takes place when consuming high sugar containing food.
The ideal patient for this procedure is the one with morbid obesity. If your body mass index is greater than 40, you are an ideal person for this weight-loss method.
The RNY averages a 3-day hospitalization with a return to full activity in 7-10 days. A liquid protein and soft diet is suggested for 3 weeks post surgical care.