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Gastroparesis Institute of USC

Glossary of Gatroparesis Related Terms

contraction: tightening of a muscle

diaphragm: the muscle wall between the chest and the abdomen that the body uses for breathing

digestive tract: includes the mouth, esophagus, stomach, small and large intestines, rectum, and anus

drug-refractory: resistant to treatment with medication

duodenum: the upper part of the small intestine

electrogastrography (EGG): a procedure that records the electrical signals in the stomach before and after eating

enteral: through or within the intestines or gastrointestinal tract

Enterra Therapy: also called gastric electrical stimulation (GES) — a therapy in which an implanted stimulation system sends mild electrical pulses to the stomach to help reduce chronic nausea and vomiting associated with gastroparesis of diabetic or idiopathic origin

esophagus: the tube that connects the throat to the stomach

FDA: Food and Drug Administration, an agency of the US Public Health Service

gastric: pertaining to the stomach

gastroduodenal manometry: test of pressure changes within the stomach and upper intestine during digestion

gastrointestinal: related to the digestive tract, which includes the mouth, esophagus, stomach, and intestines

gastroparesis: also called delayed gastric emptying; a stomach disorder in which food moves through the stomach more slowly than normal

GERD (gastroesophageal reflux disease): esophageal irritation or inflammation, often due to stomach acid that backs up into the esophagus

GET (gastric emptying test): a test that measures the speed with which food empties from the stomach and enters into the small intestine

HDE: Humanitarian Device Exemption, determined by the FDA, typically for treatments of conditions that occur in fewer than 4000 individuals annually

idiopathic: of unknown cause

IRB: Institutional Review Board, a committee of doctors, statisticians, researchers, community advocates, etc., that ensures a clinical trial is ethical and the rights of study participants are protected

lead: a small, insulated wire with an electrode that delivers electrical stimulation to a nerve or muscle

nausea: the urge to vomit

neurostimulator: a small implantable device that sends mild electrical pulses to a nerve or muscle

parenteral: administration of a substance outside the digestive system (e.g., injections or transfusions)

pseudo-obstruction: a condition characterized by poor functioning of the muscles and nerves in the intestines, resulting in symptoms similar to a bowel obstruction

pyloric valve: also called the pylorus, the sphincter muscle that separates the stomach from the upper region of the small intestine

pyloroplasty: widening of the pyloric valve

stomach: part of the digestive system, located between the esophagus and small intestine

upper gastrointestinal endoscopy: the examination of the inside of the stomach and its lining using a tiny camera at the end of a thin, flexible tube

vagus nerve: this nerve stretches from the brainstem to the colon and controls many functions in the body, including the esophagus, stomach, and intestines


Next: Web Links of Gastroparesis Related Information

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USC Gastroparesis Institute
1510 San Pablo St., Suite 514
Los Angeles, CA 90033

Phone: (323) 442-6868

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