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Definition
Urodynamic testing is a sophisticated office-based procedure to help diagnose problems with
voiding (urination) and/or urinary incontinence (involuntary loss of urine). Although we may
have a good understanding of the underlying problem following a complete history and physical
examination, a Urodynamic test helps increase the accuracy of our working diagnosis. In other
instances, it may uncover a completely unexpected finding. The test is short (Approximately 1
hour), very minimally invasive, and typically yields very useful information.
Preparation
We ask that you come to your appointment 15 minutes prior to your scheduled time. Drink 32
ounces of fluid (water is best) before you arrive for your appointment. Please make sure that
your bladder is full. When you have a strong urge to urinate, let the receptionist know.
Procedure
The initial part of the test is the uroflow (UFS). This is accomplished by you urinating into a
receptacle so our equipment can calculate the pattern and force of your stream. After you
have completely emptied your bladder, you will be asked to lie down on the exam table. Under
sterile conditions, a catheter will be inserted into your bladder to make sure that it is totally
empty, at the same time a specimen of urine will be taken to make sure that you do not have a
urinary tract infection (UTI). Once it is determined that you do not have a UTI, the first catheter
will be removed and a very thin catheter will be inserted into your bladder, with the insertion of
the catheters, you may feel a slight sting or pinch. Next, a similar catheter will be inserted into
the rectum. Once the catheters are secured in place with tape, we may begin the test.
Depending on circumstances, you may be sitting or standing for the test. In rare instances, the
test may be preformed lying down. The catheters are attached to a computer so we may
gather data about how your bladder and urethra function. Your bladder is slowly filled with
sterile water and you will be asked about sensations you are having as your bladder fills. When
you are full, you will be asked to urinate and empty you bladder into a special container.
Post Procedure
After the procedure, you might have a little stinging in the urethra until the next time you
urinate. In some patients, it may last a little longer. If there was any resistance to the passage
of the catheters, you may see a tiny blood discoloration of your urine. If needed, you will
receive an antibiotic after the test if you are prone to infections.
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