GASTRIC BYPASS SURGERY
This surgery combines the creation of a small stomach pouch to restrict food intake and construction of bypasses of the duodenum and other segments of the small intestine to cause malabsorption (decreased ability to absorb calories and nutrients from food).
Gastric bypass surgery is done to help you lose excess weight and reduce your risk of potentially life-threatening weight-related health problems, including gastroesophageal reflux disease, heart disease, high blood pressure, severe sleep apnea, type 2 diabetes, stroke.
In general, gastric bypass and other weight-loss surgeries could be an option for you if:
- Your body mass index (BMI) is 40 or higher (extreme obesity).
- Your BMI is 35 to 39.9 (obesity), and you have a serious weight-related health problem, such as type 2 diabetes, high blood pressure or severe sleep apnea. In some cases, you may qualify for certain types of weight-loss surgery if your BMI is 30 to 34 and you have serious weight-related health problems.
Gastric bypass and other types of weight-loss surgery are done in the hospital. General anesthesia is used for weight-loss surgery. Surgery usually takes several hours.
After gastric bypass and other types of weight-loss surgery, you generally won't be allowed to eat for one to two days so that your stomach and digestive system can heal. After surgery, you awaken in a recovery room, where medical staff monitors you for any complications. Your hospital stay may last from two to five days.
Gastric bypass surgery that causes malabsorption and restricts food intake produces more weight loss than restriction operations like gastric banding, which only decrease food intake. People who have bypass surgery generally lose two-thirds of their excess weight within two years.
Advantages of Gastric Bypass:
- Rapid initial weight loss
- Approach is minimally invasive approach
- Longer clinical experience
- Slightly higher total average weight loss reported than with purely restrictive procedures
- Rapid improvement or resolution of type 2 diabetes and metabolic syndrome
People who undergo gastric bypass surgery are at risk for:
- Pouch stretching (stomach gets bigger overtime, stretching back to its original size).
- Band erosion (the band closing off part of the stomach disintegrates).
- Breakdown of staple lines (band and staples fall apart, reversing the procedure).
- "Dumping syndrome" can occur.
- Portion of digestive tract is bypassed, reducing absorption of essential nutrients
- Hospital stay is usually 48 - 72 hours
- Many patients return to normal activity within two and a half weeks
- Full surgical recovery usually occurs within about three weeks
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