Gastroduodenal Manometry

Gastroduodenal manometry is a test of the pressure changes that occur within the stomach and upper intestine during digestion.

A pressure-sensitive tube is placed with an endoscope that is passed into the small intestine. The position of the manometry testing tube is checked with X-ray, and the endoscope is then removed. The tube remains connected through the nose for one or two hours while a computer detects and analyzes the muscular contractions.