Bariatric Surgery
Ebariatric Surgery

Biliopancreatic Diversion Bypass

Biliopancreatic diversion bypass (BPD) is less common than other gastric bypass bariatric surgeries and performed through traditional open surgery. Biliopancreatic diversion changes the normal process of digestion by making the stomach smaller and directing the food to bypass part of the small intestine, thus fewer calories and nutrients from food are absorbed.

Duodenal switch is one type of biliopancreatic diversion surgery.

BPD Surgery Procedure

The lower part of the stomach is removed, and the bypass is attached to the lower (distal) part of the small intestine. Your surgeon makes one long incision in the abdomen, leaving a permanent scar. Gastric staples or sutures are used to create a pouch, which holds about six ounces. The remainder of the stomach is then connected to the last section of the small intestine (ileum).

Finally, part of the small intestine, the duodenum, is attached to the last part of the small intestines where all of the bile and pancreatic secretions meet with the digested food from the stomach pouch in the ileum. Most of the food will not be digested, therefore causing you to feel full and eat less.

Bariatric Surgery Biliopancreatic Diversion Bypass

Biliopancreatic Diversion

What to expect

  • Allow three - five weeks to get back into your normal routine.
  • Schedule regular follow-ups with your doctor about three times per year: one after the third week of surgery and once a year after the first year.
  • Biliopancreatic diversion patients typically lose about 60 - 80% of their excess weight after surgery.

Biliopancreatic diversion risks

Malnutrition is the main health problem associated with post-BPD and requires you to take nutritional supplements for the rest of your life, such as the following:

  • Vitamin B12 injections
  • Calcium and iron supplements
  • Daily multivitamins

Without nutritional supplements, you may develop various nutritional complications including vitamin deficiencies, osteoporosis or anemia. Other BPD risks include the following:

  • Gastric staple leakage
  • Stomach ulcers
  • Foul smelling stools and flatulence
  • Dumping syndrome (intestinal pain, nausea, or vomiting caused by concurrent eating and drinking)
  • Chronic diarrhea due to dumping syndrome

Biliopancreatic diversion bypass surgery is a complex surgery that should be performed only by a very experienced surgeon with a successful history of BPD procedures.

Get more information on bariatric surgery

For more information on weight loss surgery, see the links above left. To find a biliopancreatic diversion surgeon near you, use our bariatric surgeon locator.

Find out if you are a candidate for bariatric surgery.

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