IPSS has a recognised utility in quantifying the symptoms of outlet obstruction, even if its specificity for benign prostatic hyperplasia has not been proved. Uroflowmetry can also define micturition patterns, but not the degree of obstruction. We correlated the symptom scores and the uroflowmetrograms in the screening of outlet obstruction. A group of 121 patients was evaluated: 111 subjects were observed for voiding symptoms and 10 normal patients were included as a control group. Qmax, IPSS and three new parameters suggested by Nishimoto and coll. (Qmax/T100, TQmax/T100, VV/T100 x Qmax) were considered for all patients. All the values, calculated for each patient, were correlated using Student's T test. A statistically significant correlation between IPSS and Nishimoto's parameters was observed when the latter were indicative of an abnormal flow.
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