Roux-en Y (RY) gastric bypass or gastric bypass is an established surgical treatment for morbid obesity. This is usually performed with laparoscopy or “key-hole” surgery. It involves partitioning the stomach into a small pouch and re-arranging part of small bowel. The small stomach pouch, about the size of one's thumb, is fashioned with surgical stapler and separated from he remainder of stomach. The upper half of small bowel is sectioned and re-arranged into 2 limbs - Roux or the 'food' limb and biliopancreatic or “ digestive enzyme” limb. The “food” limb is then connected to the small stomach pouch to restore the continuity of gut and the “digestive enzyme” limb connected to the “food” limb downstream to allow digestion of food and absorption of nutrients in the “common” limb. With gastric bypass, patients feel full and satisfied with small portion of food. In addition, the re-arrangement of small bowel triggers hormonal changes that suppress hunger and improve diabetes.
The advantages of gastric bypass are:
The disadvantages of gastric bypass are:
Patients may start to see weight loss within the first month after surgery. However, total weight loss usually happens between 12 to 18 months after the procedure. It can vary based on individual diet and exercise habits, and adherence to doctor's recommendations. Patients are encouraged to lead a healthy lifestyle for the best results.
Yes, long-term follow up is mandatory. 6 to 12 monthly nutritional surveillance with blood test to ensure adequate nutritional health.
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