Urodynamics

What is Urodynamics?

Urodynamics refers to a series of diagnostic tests that evaluate the function of the bladder and urethra. These tests may be recommended if you have urinary incontinence (leakage of urine), recurrent bladder infections, slow or weak urinary stream, incomplete bladder emptying, or frequent urination. These tests provide important information in order for your physician to accurately diagnose and treat your bladder problems appropriately.

Uroflow

This test measures the speed and amount of urine you void. You should come to the test feeling as though you need to urinate. Try not to empty your bladder one hour before your test. You will be asked to urinate into a commode with a funnel attached to a computer that measures your urine flow.

Cystometrogram

This study evaluates how your bladder holds urine, measures your bladder capacity, and also determines how well you can control your bladder. Through a catheter your bladder is filled with fluid. In order to reproduce your bladder symptoms, you should report any sensations you feel during the study. In addition, you may be asked to cough, bear down, stand, or walk in place during the test. At the end of the study, you will be asked to urinate.

EMG

This test measures how well you can control your sphincter (outlet) muscles and determines if they are working in coordination with your bladder. Electrodes may be placed near the rectum to record muscle activity.

Pressure Flow Study

This test determines if there is an obstruction. After your bladder is filled through a catheter, you will be asked to urinate as you normally would. This test may be done sitting on a commode or standing. The study simultaneously records the bladder pressure and urine flow rate.