Anorectal Manometry

Anorectal manometry measures the pressures and muscle coordination in your rectum and anal sphincter. A small, flexible catheter with a balloon tip is gently inserted into the rectum. It evaluates how well the muscles and nerves work together for normal bowel movements. This is the key test for understanding chronic constipation, fecal incontinence, and pelvic floor disorders.

This test helps identify the exact cause of constipation or incontinence — whether it's a muscle coordination problem (dyssynergia), weak sphincter, or nerve issue. Knowing the cause allows your doctor to choose the right treatment.

1. A thin catheter with a small balloon is gently placed into the rectum
2. You'll be asked to squeeze, push, and relax as if having a bowel movement
3. The balloon may be inflated to test rectal sensation thresholds
4. The sensors measure muscle pressures and nerve responses in real time
5. The test takes about 20–30 minutes and requires no sedation

20–30 minutes

• ✓A small enema 1–2 hours before the test
• ✓No fasting required
• ✓Wear comfortable clothing

• •The test is mildly uncomfortable but not painful
• •It takes about 20–30 minutes
• •You can go home immediately after and resume normal activities
• •Results guide your treatment plan — often biofeedback therapy