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Bypass Surgery

Gastric Bypass

What is gastric bypass surgery?

Also known as Roux-en-Y, this procedure creates a small pouch that bypasses the stomach and attaches to the intestine.

How is gastric bypass surgery performed?

This procedure can be performed in two ways:

  • Laparoscopically: Surgeon makes several small abdominal incisions
  • Open procedure: Surgeon makes one abdominal incision (10-12 inches)

How will I lose weight?

Restricts or limits the amount of food you can eat and reduces the number of calories your body will absorb.

Advantages of Gastric Bypass

  • "Dumping syndrome" occurs if sweets and chocolates are eaten
  • Good procedure for "sweet eaters"
  • Long track record
  • Weight loss tends to be greater than with gastric band

Disadvantages of Gastric Bypass
  • Longer recovery time
  • Surgery is permanent
  • Staple line leak (less than 1 percent of cases)
  • Minor weight regain (10-20 percent after 2-5 years)
  • Nutritional/mineral supplements required
  • More surgically involved than sleeve gastrectomy or LAP-BAND®; greater risk

Residual stomach capacity: 15-30 mL

Estimated weight loss: 70-80 percent of excess weight loss over two years

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