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What is gastroparesis? Gastroparesis, also called delayed gastric emptying, is a disorder that slows or stops the movement of food from the stomach to the small intestine. Normally, the muscles of the stomach, which are controlled by the vagus nerve, contract to break up food and move it through the gastrointestinal (GI) tract.
1 Gastroparesis results in inadequate grinding of food by the stomach, and poor emptying of food from the stomach into the intestine. 2  The primary symptoms of gastroparesis are nausea, vomiting, and abdominal pain.  Gastroparesis is best diagnosed by a test called agastric emptying study.