Parent & Patient Information System 06/09/2015 Page25 / 51 2.8 Uroflowmetry and Urodynamic study 2.8.1 Uroflowmetry It is a test that gives information about the urinary flow rate, voiding pattern and voided volume. Child will urinate to a special designed toilette which has connected to a computer. It is a noninvasive test. However, it does not give data about the bladder dynamics. By this test, maximum urinary flow rate, mean flow rate, voiding duration, time to reach to the maximum flow rate and voided volume are measured. The computer draws a pattern of voiding. As a result several conclusions about the presence of lower urinary tract obstruction and voiding problems can be made. This test is also used to evaluate the response to the treatments in patients with neurologic or non-neurologic voiding problems. 2.8.2 Urodynamic study Urodynamic study is done to evaluate the lower urinary tract functions. It gives information about the storage and emptying phases of the voiding activity. In a normal individual, bladder stores the urine in a low pressure. During emptying bladder contracts, urethral sphincter relaxes and all urine is expelled without residue. The patient should be informed prior to the test. The routine and urologic examinations must be done. A voiding diary must be filled. In the presence of UTI, test should be postponed. Therefore, a urine analysis is mandatory.
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