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DEFINITIONS
common tract
The common length at the end of the small intestine in which food and digestive juices are able to mix, after being initially kept separate by the intestinal “rerouting” of the gastric bypass procedure. You can visualize the rerouted intestine in the shape of a “Y”: Digestive juices travel from the liver and pancreas down one intestinal path; food travels from the stomach down another path. These two paths come together and form a common tract which carries food and digestive juices toward the large intestine. Sugars, protein and nutrients are absorbed to a limited degree in the “food” tract. Fat absorption occurs only in the common tract, where digestive juices mix with food. Therefore, the shorter the common tract, the less fat absorption can occur.
dumping syndrome
Rapid gastric emptying, or dumping syndrome, happens when the small intestine fills too quickly with undigested food from the stomach. "Early" dumping begins during or right after a meal. Symptoms of early dumping include nausea, vomiting, bloating, diarrhea, and shortness of breath. "Late" dumping happens 1 to 3 hours after eating. Symptoms of late dumping include weakness, sweating, and dizziness.
Due to the artificial connection (anastomosis) that is created between the stomach pouch and small intestine, this problem is not uncommon in RNY patients. Dumping syndrome does not occur in duodenal switch patients, because their pyloric valve is retained and allows normal emptying of the stomach.
Click here for an explanation of Dumping Syndrome written by Jean Straka, RN.
pyloric valve
This valve, locate at the exit of the stomach, regulates the release of the stomach contents into the small intestine.
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