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Roux-en-Y Gastric Bypass (RGB) Weight Loss Surgery Operation - Obesity Treatment

Roux-en-Y Gastric Bypass (RGB)
Information About Roux-en-Y Gastric Bypass
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Roux-en-Y Gastric Bypass (RGB) Weight Loss Surgery Operation

Roux-en-Y Gastric Bypass (RGB) - Weight Loss Surgery Operation

The Roux-en-Y gastric bypass operation has been shown to be the best surgical procedure for the treatment of severe obesity. (See Fig 1.) Roux-en-Y gastric bypass is called a "restrictive" operation because the severely reduced size of the stomach significantly restricts the patient's ability to eat large meals. This facilitates many patients to lose over 75 percent of their excess body weight over the first 18-24 months after Roux-en-Y surgery.

Figure 1. Roux-en-Y gastric bypass (RGB)

During Roux-en-Y gastric bypass surgery, a small stomach pouch is first created to restrict food intake. The capacity of the stomach is reduced to only 30cc (equivalent to two tablespoons) by stapling across the stomach with a special metal device. Thus, approximately 90 percent of the stomach is below the staple line and is therefore isolated from the passage of food through the stomach.

Next, a Y-shaped section of the small intestine (typically 50-100 cm) is attached to the pouch to allow food to bypass the lower stomach, the duodenum (the first segment of the small intestine), and the first portion of the jejunum (the second segment of the small intestine). This bypass reduces the amount of calories and nutrients the body absorbs.

Advantages of Roux-en-Y Gastric Bypass (RGB)

- Greatly controls food intake
- Reversible in an emergency

Disadvantages of Roux-en-Y Gastric Bypass (RGB)

- Staple line failure
- Ulcers
- Narrowing/blockage of the stoma
- Vomiting if food is not properly chewed or if food is eaten to quickly

Source:
National Institute of Diabetes & Digestive & Kidney Diseases

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Weight Loss Surgery Information

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Dietary Calories In Main Food Groups

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Information About Energy Needs and Calorie Deficit to Lose Weight

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