Urinary Flow Velocity as an Index of Male Voiding Function

Abstract
Urinary velocity and urinary peak flow rate developed by 463 male patients were measured before and after treatment for prostatic obstruction, stricture or prostatitis and compared to 121 documented normal males. Peak flow rate does discriminate partially between the normal and nonnormal populations, but many subjects who presented with ostensibly normal flow rates were actually obstructed when measured by peak urinary velocity. Velocity is a valuable secondary measurement in the clinic, and the flow velocity vs. flow rate diagram is a good tool for classifying patients urodynamically.

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