Dumping syndrome occurs when food, especially sugar, moves too quickly from the stomach to the duodenum—the first part of the small intestine—in the upper gastrointestinal (GI) tract. This condition is also called rapid gastric emptying.[1] It is mostly associated with conditions following gastric or esophageal surgery, though it can also arise secondary to diabetes or to the use of certain medications; it is caused by an absent or insufficiently functioning pyloric sphincter, the valve between the stomach and the duodenum.[2]
Dumping syndrome has two forms, based on when symptoms occur. Early dumping syndrome occurs 10 to 30 minutes after a meal. It results from rapid movement of fluid into the intestine following a sudden addition of a large amount of food from the stomach.[1] The small intestine expands rapidly due to the presence of hypertonic/hyperosmolar contents from the stomach, especially sweet foods. This causes symptoms due to the shift of fluid into the intestinal lumen, with plasma volume contraction and acute intestinal distention.[3] Osmotic diarrhea, distension of the small bowel leading to crampy abdominal pain, and reduced blood volume can result.
Late dumping syndrome occurs 2 to 3 hours after a meal. It results from excessive movement of sugar into the intestine, which raises the body's blood glucose level and causes the pancreas to increase its release of the hormone insulin. The increased release of insulin causes a rapid drop in blood glucose levels, a condition known as alimentary hypoglycemia, or low blood sugar.[1][3]
^ abc"Dumping Syndrome". National Institute of Diabetes and Digestive and Kidney Diseases. September 2013. Retrieved 2017-11-29.
^"Postgastrectomy dumping syndrome : Definition(s) from the Unified Medical Language System ® Diseases Database". www.diseasesdatabase.com.
^ abJohn Del Valle (chapter author) (2010-01-21). "293. Peptic Ulcer Disease and Related Disorders". Harrison's Principles of Internal Medicine (18th ed.). Accessmedicine.com. Retrieved 2014-02-01. {{cite book}}: |author= has generic name (help)(subscription required)
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