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Antroduodenal Manometry is a test to assess the function of stomach and proximal intestine by directly recording the pressure waves called “peristalsis.” This is done by placing a thin plastic tube or probe with pressure sensors through the nose and into the stomach and upper small intestine during an upper endoscopy by your child's gastroenterologist or sometimes by a radiologist, who guides it in using fluoroscopy or video X-ray study. 

Reasons why children may need antroduodenal manometry

What happens before and after the antroduodenal manometry test?