Anorectal Manometry
in Denver

What is Anorectal Manometry?

Anorectal manometry is a test to measure the pressure of the anal sphincter muscles, the sensation of the rectum and the neural reflexes required for normal bowel movements. The anal sphincter has both internal and external sphincters, which are rings of muscle at the opening of the anus. The sphincters keep the anus closed as stool collects in the rectum. This test is performed to see how well these valves are working.

This test is commonly performed for patients who have problems passing stool, constipation, fecal incontinence or in cases of Hirschsprung’s disease in children.

How is Anorectal Manometry Performed?

During anorectal manometry, you will be asked to lie on your side. A catheter with a balloon connected to the end will be inserted through the opening of the anus and past the anal sphincter muscles before passing into the rectum. The small balloon will be inflated, which causes the muscles and nerves in the rectum and anus to squeeze. A machine will record how the rectum and anal sphincter contract and relax. The test can take between 30-60 minutes to complete.

Following Anorectal Manometry

After your anorectal manometry is completed, your doctor will speak with you regarding the results. If your test results are abnormal, your doctor will speak discuss your diagnosis and the appropriate treatment options. There is no downtime required following this test, so you can feel free to return home and resume your normal activities.

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How Do I Prepare for My Procedure?

Prior to anorectal manometry, there is some preparation needed to ensure that there is no stool in the rectum during the test. Your doctor will give you specific preparation instructions, which may include the following:

• You will need to take a Fleet® enema 2-3 hours before the appointment.
• No food or drinks 2 hours before the procedure.
• You may take your daily medications with small amounts of water at least 2 hours before the test.
• Do not take smooth muscle relaxants such as Valium or narcotic pain medications 24 hours before your appointment time.

If you have any questions regarding your prep instructions, please contact our office. We want to ensure sure that you have properly followed pre-test instructions for the best results.

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