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Urodynamics is a study that assesses how the bladder and urethra are performing their job of storing and releasing urine. Urodynamic tests help your doctor or nurse see how well your bladder and sphincter muscles work and can help explain symptoms such as


The test takes approximately 45 minutes. You may eat normally prior to the test. You will be asked to empty your bladder into a special commode (flowmeter). Your urine will then be tested to make sure there is no infection. A small catheter will be passed into the bladder via the urethra (water-pipe). So that we can compare the pressure in your bladder with the pressure outside the bladder, a small pressure catheter is also inserted into your back passage. Having these tubes inserted is not painful but you may find this a little uncomfortable. Once they are in place, the bladder is filled with sterile fluid. The pressure lines allow us to monitor how your bladder behaves and also gives some understanding of your bladder sensation. When your bladder is full, the filling line will be removed leaving the pressure lines in place. You will be asked to cough and "heel bounce" to test the bladder further. You will then empty your bladder in the commode. Both lines from the bladder and back passage will then be removed. During the investigation every effort will be made to ensure a minimum of discomfort and a maximum of privacy.


After the test, you may find passing urine slightly uncomfortable and more frequent for the next day or two. We recommend that you increase your fluid intake for the following 24-48 hours. This will flush out your bladder and help prevent infection. Should you develop a burning sensation on passing urine and/or a fever, you may have developed a urine infection. You should contact your GP surgery and inform them that you have recently had a Urodynamics test. A course of antibiotics may be necessary.