Roux-en-Y Gastric bypass
There are two main principles of bariatric surgery. These exist in combination or alone: restriction and malabsorption. Purely restrictive operations limit the amount of solid food that can be consumed.
Roux-en-Y gastric bypass is both a restrictive and malabsorptive operation
Technique
Similar to VBG, a small pouch is created by either stapling or transecting the proximal stomach. The pouch is then connected to and empties into a Roux-en-Y limb of jejunum.
Induce weight loss by causing malabsorption of calories, inducing a dumping syndrome and altering appetite through alterations in GI peptides.
Advantages
- 60% of excess weight lost in year 1
- Maintains a weight loss of 50% for 25 years
- Rapid resolution of metabolic syndrome
- Improvement in obesity-related complications
Disadvantages
- Severe dumping syndrome – rapid rush of liquid/soft high caloric food “dumping” into limb of small intestine causing discomfort, nausea, bloating, diarrhea, weakness
- High risk of nutritional deficiencies
