Bilio Pancreatic Diversion (BPD)
The small pouch that remains is connected directly to the final segment of the small intestine, completely bypassing the duodenum and the jejunum. Although this procedure successfully promotes weight loss, it is less frequently used than other types of surgery because of the high risk for nutritional deficiencies.
This procedure is less food restrictive than the RNY. The stomach capacity is 4-5 ounces compared with RNY of around an ounce. There is a significant malabsorptive component which acts to maintain weight loss long term. The patient must be closely monitored to guard against severe nutritional deficiencies.
What is Biliopancreatic Diversion ?
The digestive process begins in the mouth, where chewing and saliva breakdown food. Digestion continues in the stomach, where food is turned into a liquid called chyme.
Chyme next passes into the small intestine. Here, enzymes from the pancreas and liver further digest food. It is also in the small intestine where all nutrients and vitamins are absorbed. Small fingerlike projections lining the small intestine, called villi, enable digested food to enter the bloodstream.
Getting a Biliopancreatic Diversion
During the first part of the procedure, the size of the stomach is surgically reduced in a procedure called a gastrectomy. The pyloric valve, which regulates the release of stomach contents into the small intestine, and a short segment of the duodenum, the first section of the small intestine, are left in place. By preserving this part of the digestive tract, the frequent complication of gastric "dumping" is reduced.
Effects of BPD
The BPD with duodenal switch is a complicated weight-loss procedure that has demonstrated successful long term weight loss.
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