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To assess the function of the large intestine (or ‘colon’), a colonic manometry test can directly record the pressure waves. This is done by placing a thin plastic tube or probe with pressure sensors through the rectum and into the colon during a colonoscopy by your gastroenterologist or sometimes by a radiologist, who guides it in using fluoroscopy or video X-ray study.

Reasons why children may need a colonic manometry

What happens before and after the colonic manometry test?