Anorectal Manometry

Anorectal Manometry

What is anorectal manometry?

Anorectal manometry is a test to evaluate rectum and the anal canal. It is one of the tests used for evaluation of constipation and fecal incontinence. This test measures the pressures of the anal sphincter muscles, the sensation in the rectum, and the neural reflexes that are needed for normal evacuation of bowel movements.

How do I prepare for the procedure?

You will need to fast for at least two hours before the test and give yourself an enema.

How does the procedure work?

It takes about 30 minutes. You will lie on your side while a small, flexible tube with a balloon attached is inserted into the rectum.   The small balloon is inflated in the rectum to assess the normal reflex pathways.

What are the risks of Anorectal Manometry testing?

Anorectal manometry is a safe, low risk procedure and is unlikely to cause any pain. Complications are rare but in some cases perforation (tearing) or bleeding of the rectum could occur.