Anorectal manometry is a procedure to help determine the cause of chronic constipation, stool accidents, or other bowel problems by measuring how the muscles and nerves work inside the rectum.

Understanding the procedure

A person will lie on their side and the doctor places a small, soft, flexible tube into the rectum. A tiny balloon is attached to the end of the tube. This balloon is then filled with small amounts of air to measure how the muscles and nerves work inside the rectum.  A computer records the activity. During the test the doctor may ask the person to squeeze, relax, and push. There is no discomfort associated with this. 

Indications for the procedure

This procedure it typically recommended for people with chronic constipation or incontinence.