A Method of Adjustment of Male Peak Urinary Flow Rate for Varying Age and Volume Voided

Abstract

Peak or maximum urinary flow rate was useful to identify voiding dysfunctions [in humans], especially obstructive prostatic disease. The usefulness of peak urinary flow rate is limited unless volume voided and age also are considered, since the clinical and mathematical relationship of male peak urinary flow rate as a function of volume voided and age was previously defined. An accurate method of adjusting peak urinary flow rate to a single value that incorporates age and volume voided is reported. This adjusted peak flow rate was tested clinically by comparison of preoperative and postoperative voidings of prostatectomy patients, and its accuracy was affirmed.