Anorectal manometry

Anorectal manometry is a simple outpatient test to measure the strength of the anal sphincter muscles, the movements of the rectal and anal muscles, sensation in the rectum and nerve reflexes needed for bowel movements.

What to expect with an anorectal manometry

If you require an anorectal manometry, you’ll have to fast for a certain number of hours before the procedure and take enemas to clean out your digestive system. During the procedure, a narrow tube is inserted into the rectum. The tube is connected to a computer that provides readings for your doctor to evaluate. A small balloon on the end of the tube may help measure reflexes. You alternately relax, squeeze and push (as if you were having a bowel movement). The test takes only about 30 minutes, and you’ll feel minor discomfort, if any.