Proximal Gastric Bypass

Stomach-restrictive surgery with mild malabsorption.

The proximal roux-en-y gastric bypass, also known simply as the proximal gastric bypass, is a stomach restrictive operation with mild malabsorption. With this operation, the surgeon creates a small stomach pouch which restricts the amount of food that can be consumed. In addition, the intestines are re-routed so roughly the top one-fourth of the small intestines are bypassed. Weight loss is achieved both through restriction of food consumption as well as a mild decrease in calorie absorption. The malabsorptive (medial) gastric bypass is a similar operation with more significant malabsorption.

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How It Works

For this operation, the stomach is divided vertically to create a small, thumb-sized pouch (approximately 15 ml). Patients usually report feeling full after eating about 2 ounces of solid food. The small intestines are then separated and the lower section is attached directly to the small stomach pouch. The food travels through this portion of the small intestines undigested until it meets with the section of intestines carrying digestive juices (bile and pancreatic juices). The last segment of the intestine where the food and digestive juices mix is referred to as the common channel (CC). Absorption of nutrients and calories is determined by the length of the common channel. Roughly one-fourth of the small intestines are bypassed resulting in mild malabsorption, or decrease in calorie absorption.

Outcomes

  • About 70% excess weight loss (EWL) has been reported. (9) (Excess weight is the amount of weight over what is considered the “ideal body weight” for a person’s height [Current Weight – Ideal Weight = Excess Weight]. The percentage of excess weight loss (%EWL) is the percentage of weight loss from this excess weight.)
  • Improvement/resolution in all major co-morbidities has been documented, including type 2 diabetes, sleep apnea, hypertension, high cholesterol and depression.
Cheri, Proximal Gastric Bypass

Cheri, Proximal Gastric Bypass

Read the success story   

Cherie was happy, successful and secure with who she was at 258 lbs. The problem was her health. She found herself missing out on events with her family due to health issues caused by her weight. Since having the proximal gastric bypass, Cherie has lost 118 lbs.** and nearly 20 dress sizes! She’s the same happy person, but now she has nothing to hold her back.

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