Anorectal manometry
Anorectal Manometry[edit]
Anorectal manometry is a diagnostic procedure used to evaluate the function of the muscles in the rectum and anus. This test is particularly useful in assessing conditions related to defecation disorders, such as fecal incontinence and constipation.
Purpose[edit]
The primary purpose of anorectal manometry is to measure the pressures of the anal sphincter muscles, the sensation in the rectum, and the neural reflexes that are necessary for normal bowel movements. It helps in diagnosing conditions like Hirschsprung's disease, anismus, and other anorectal disorders.
Procedure[edit]
During the procedure, a small, flexible tube with a balloon at the end is inserted into the anus and rectum. The balloon is inflated, and the pressures exerted by the muscles are recorded. The test typically lasts about 30 minutes and is performed on an outpatient basis.
Indications[edit]
Anorectal manometry is indicated for patients experiencing:
- Chronic constipation
- Fecal incontinence
- Difficulty in passing stool
- Suspected Hirschsprung's disease
Interpretation[edit]
The results of anorectal manometry provide information about:
- Anal sphincter pressure
- Rectal sensation
- Rectoanal inhibitory reflex
- Coordination of the muscles during defecation
Abnormal results may indicate dysfunction in the anal sphincter muscles or nerve supply, which can guide further treatment options.
