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Other Names: Gastric dumping syndrome, or rapid gastric emptying
Gastric dumping syndrome, or rapid gastric emptying is a condition where ingested foods bypass the stomach too rapidly and enter the small intestine largely undigested. It happens when the small intestine expands too quickly due to the presence of hyperosmolar (having increased osmolarity) contents from the stomach. This causes symptoms due to the fluid shift into the gut lumen with plasma volume contraction and acute intestinal distention. “Early” dumping begins concurrently within 15 to 30 minutes from ingestion of a meal. Symptoms of early dumping include nausea, vomiting, bloating, cramping, diarrhea, dizziness, and fatigue. “Late” dumping happens one to three hours after eating. Symptoms of late dumping include weakness, sweating, and dizziness. Many people have both types. The syndrome is most often associated with gastric bypass (Roux-en-Y) surgery.
Rapid loading of the small intestine with hypertonic stomach contents can lead to rapid entry of water into the intestinal lumen. Osmotic diarrhea, distension of the small bowel (leading to crampy abdominal pain), and hypovolemia can result.
In addition, people with this syndrome often suffer from low blood sugar, or hypoglycemia, because the rapid “dumping” of food triggers the pancreas to release excessive amounts of insulin into the bloodstream. This type of hypoglycemia is referred to as “alimentary hypoglycemia.”
Dumping Syndrome occurs when food, especially sugar, moves too fast 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. Dumping syndrome has two forms, based on when symptoms occur:
*early dumping syndrome—occurs 10 to 30 minutes after a meal
*late dumping syndrome—occurs 2 to 3 hours after a meal
Symptoms of dumping syndrome are most common during a meal or within 15 to 30 minutes following a meal. They include:
*Feeling of fullness
*Heart palpitations, rapid heart rate
Signs and symptoms also can develop later, usually one to three hours after eating. This is due to the dumping of large amount of sugars into the small intestine (hyperglycemia). In response, the body releases large amounts of insulin to absorb the sugars, leading to low levels of sugar in the body (hypoglycemia).
Symptoms of late dumping can include:-
*Heart palpitations, rapid heart rate
A study of more than 1,100 people who had their stomachs surgically removed found that about two-thirds experienced early symptoms and about a third experienced late symptoms of dumping syndrome. Some people experience both early and late signs and symptoms.
No matter when problems develop, however, they may be worse following a high-sugar meal, especially one that’s rich in table sugar (sucrose) or fruit sugar (fructose).
Dumping syndrome is caused by problems with the storage of food particles in the stomach and emptying of particles into the duodenum. Early dumping syndrome results from rapid movement of fluid into the intestine following a sudden addition of a large amount of food from the stomach. Late dumping syndrome results from rapid 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 hypoglycemia, or low blood sugar.
In dumping syndrome, food and gastric juices from your stomach move to your small intestine in an uncontrolled, abnormally fast manner. This is most often related to changes in your stomach associated with surgery, such as when the opening (pylorus) between your stomach and the small intestine (duodenum) has been removed during an operation.
The pylorus acts as a brake so that stomach emptying is gradual. When it’s removed, stomach material dumps rapidly into the small intestine. The ill effects of this are thought to be caused by the release of gastrointestinal hormones in the small intestine, as well as insulin secreted to process the sugar (glucose).
Dumping syndrome can occur after any operation on the stomach as well as after removal of the esophagus (esophagectomy). Gastric bypass surgery for weight loss is the most common cause today. It develops most commonly within weeks after surgery, or as soon as you return to your normal diet. The more stomach removed or bypassed, the more likely that the condition will be severe. It sometimes becomes a chronic disorder.
The doctor will diagnose dumping syndrome primarily on the basis of symptoms. A scoring system helps differentiate dumping syndrome from other GI problems. The scoring system assigns points to each symptom and the total points result in a score. A person with a score above 7 likely has dumping syndrome.
The following tests may confirm dumping syndrome and exclude other conditions with similar symptoms:-
*A modified oral glucose tolerance test checks how well insulin works with tissues to absorb glucose. A health care provider performs the test during an office visit or in a commercial facility and sends the blood samples to a lab for analysis. The person should fast—eat or drink nothing except water—for at least 8 hours before the test. The health care provider will measure blood glucose concentration, hematocrit—the amount of red blood cells in the blood—pulse rate, and blood pressure before the test begins. After the initial measurements, the person drinks a glucose solution. The health care provider repeats the initial measurements immediately and at 30-minute intervals for up to 180 minutes. A health care provider often confirms dumping syndrome in people with
#low blood sugar between 120 and 180 minutes after drinking the solution
#an increase in hematocrit of more than 3 percent at 30 minutes
#a rise in pulse rate of more than 10 beats per minute after 30 minutes
*A gastric emptying scintigraphy test involves eating a bland meal—such as eggs or an egg substitute—that contains a small amount of radioactive material. A specially trained technician performs this test in a radiology center or hospital, and a radiologist—a doctor who specializes in medical imaging—interprets the results. Anesthesia is not needed. An external camera scans the abdomen to locate the radioactive material. The radiologist measures the rate of gastric emptying at 1, 2, 3, and 4 hours after the meal. The test can help confirm a diagnosis of dumping syndrome.
The doctor may also examine the structure of the esophagus, stomach, and upper small intestine with the following tests:
#An upper GI endoscopy involves using an endoscope—a small, flexible tube with a light—to see the upper GI tract. A gastroenterologist—a doctor who specializes in digestive diseases—performs the test at a hospital or an outpatient center. The gastroenterologist carefully feeds the endoscope down the esophagus and into the stomach and duodenum. A small camera mounted on the endoscope transmits a video image to a monitor, allowing close examination of the intestinal lining. A person may receive general anesthesia or a liquid anesthetic that is gargled or sprayed on the back of the throat. If the person receives general anesthesia, a health care provider will place an intravenous (IV) needle in a vein in the arm. The test may show ulcers, swelling of the stomach lining, or cancer.
#An upper GI series examines the small intestine. An x-ray technician performs the test at a hospital or an outpatient center and a radiologist interprets the images. Anesthesia is not needed. No eating or drinking is allowed before the procedure, as directed by the health care staff. During the procedure, the person will stand or sit in front of an x-ray machine and drink barium, a chalky liquid. Barium coats the small intestine, making signs of a blockage or other complications of gastric surgery show up more clearly on x rays.
A person may experience bloating and nausea for a short time after the test. For several days afterward, barium liquid in the GI tract causes white or light-colored stools. A health care provider will give the person specific instructions about eating and drinking after the test.
Dumping syndrome is largely avoidable by avoiding certain foods that are likely to cause it; therefore, having a bigger digestive tract balanced diet is important. Treatment includes changes in eating habits and medication. People who have gastric dumping syndrome need to eat several small meals a day that are low in carbohydrates, avoiding simple sugars, and should drink liquids between meals, not with them. Fiber delays gastric emptying and reduces insulin peaks. People with severe cases take medicine (such as octreotide and cholestyramine) or proton pump inhibitors (such as pantoprazole and omeprazole) to slow their digestion. Doctors may also recommend surgery. Surgical intervention may include conversion of a Billroth I to a Roux-en Y gastrojejunostomy.
A doctor may prescribe octreotide acetate (Sandostatin) to treat dumping syndrome symptoms. The medication works by slowing gastric emptying and inhibiting the release of insulin and other GI hormones. Octreotide comes in short- and long-acting formulas. The short-acting formula is injected subcutaneously—under the skin—or intravenously—into a vein—two to four times a day. A health care provider may perform the injections or may train the patient or patient’s friend or relative to perform the injections. He or she may injects the long-acting formula into the buttocks muscles once every 4 weeks. Complications of octreotide treatment include increased or decreased blood glucose levels, pain at the injection site, gallstones, and fatty, foul-smelling stools.
Hope through Research:
The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) conducts and supports basic and clinical research into many digestive disorders, including dumping syndrome.
Clinical trials are research studies involving people. Clinical trials look at safe and effective new ways to prevent, detect, or treat disease. Researchers also use clinical trials to look at other aspects of care, such as improving the quality of life for people with chronic illnesses. To learn more about clinical trials, why they matter, and how to participate, visit the NIH Clinical Research Trials and You website at www.nih.gov/health/clinicaltrialsExternal NIH Link. For information about current studies, visit www.ClinicalTrials.govExternal Link
Disclaimer: This information is not meant to be a substitute for professional medical advise or help. It is always best to consult with a Physician about serious health concerns. This information is in no way intended to diagnose or prescribe remedies.This is purely for educational purpose.