Electromyography, Pelvic Floor Sphincter Test

This test uses electrodes to measure electrical impulses that come from the urinary or anal sphincter. The urinary sphincter is a muscle that keeps urine from releasing. The anal sphincter is the sphincter that keeps bowel movements from releasing.

PREPARATION FOR TEST

No preparation or fasting is necessary.

NORMAL FINDINGS

  • Increased EMG signal during bladder filling.

  • Silent EMG signal on voluntary urination.

  • Increased EMG signal at the end of urinating.

  • Increased EMG signal with voluntary contraction of the anal sphincter.

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.

MEANING OF TEST

Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.

OBTAINING THE TEST RESULTS

It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.