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Int J Urol. 2008 Dec;15(12):1044-8. doi: 10.1111/j.1442-2042.2008.02180.x. Epub 2008 Nov 13.

Are voiding symptoms really associated with abnormal urodynamic voiding parameters in women?

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Department of Pelvic Reconstructive Surgery and Urogynaecology, St George's Hospital, St George's University of London, London, UK.



To examine the relationship between voiding symptoms and objective measurements of voiding dysfunction.


We prospectively collected data from 116 consecutive women attending for urodynamic investigations. Symptoms of voiding dysfunction and objective voiding parameters including uroflowmetry and post-void residual volume were evaluated.


Sixteen (14%) patients reported a symptom of straining, 21 (18%) double voiding, 32 (27%) post-micturition dribbling, 10 (8%) poor stream and 34 (29%) incomplete emptying. Using receiver-operator curves we were unable to determine a cut-off value for flow or residual volume where symptoms became more prevalent. Poor stream was, however, a good predictor for a residual volume of >100 mL and >150 mL. Strain predicted a residual volume of >100 and >150 mL and it correlated with maximum flow rate <15 mL/s. The other three symptoms did not correlate with any of the cut-off values.


Poor steam and strain are weakly predictive of abnormal voiding function.

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