Anorectal Manometry

King’s uses the most advanced technological equipment to diagnose conditions of the rectum and sphincter.

What Is An Anorectal Manometry?

The anal sphincter is the ring of muscles that control the opening and closing of the anus. An Anorectal manometry is a test that allows doctors to assess how are the rectum and the anal sphincter are working. The test is done by introducing into the anus a small catheter connected to a machine that records the sphincter pressure.

When Will You Need An Anorectal Manometry?

The anorectal manometry test is commonly performed in people who have some of the following conditions:

  • Fecal incontinence
  • Severe constipation
  • Hirschsprung’s disease in children

What Does an Anorectal Manometry Involve?

Before Anorectal Manometry

After the doctor explains the reasons and the steps of your procedure, you will be asked to take a cleansing bowel formulae (a laxative) at home the day before your procedure.

During the Procedure

Anorectal manometry can be performed in your doctor’s office, since it’s a very simple and painless procedure. The doctor will ask you to lay on your side, with your knees drawn toward your chest. Then, your doctor will insert in your anus a small catheter -the size of a thermometer- with a small balloon attached at the end. The balloon will be gradually inflated in order to detect the contractions and relaxations of the rectum and anal sphincter during the movements of squeezing and relaxing that your doctor will ask you to do. The catheter is connected to a machine that records all the results during the procedure for later interpretation. The entire procedure usually takes around 10-15 minutes.

After the Procedure

Usually, the procedure is performed on an outpatient basis and you can go home as soon as the procedure is finished. Also, you can resume your normal activities and diet immediately after the procedure.

Possible Risks and Complications

Anorectal manometry is a very safe procedure with almost no risk associated. You might feel some anal discomfort or irritation after the procedure or minor bleeding if you have any other anorectal conditions like hemorrhoids.

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