Computer analysis of micturition parameters and accuracy of uroflowmeter

Several micturition parameters in healthy volunteers have been studied with digital computer analysis. The accuracy of the uroflowmeter has also been tested. Total voiding time, average flow rate, maximum flow rate, volume and time at maximum flow rate are all the function of volume voided. The first half of urinary volume is rapidly evacuated in the first one third of the total voiding time, and the rest in the remaining two thirds of the voiding period. When the constant stream hits at the center of the disk, the response of the flowmeter is fairly good. Once the urinary stream is accelerated and/or hits at the edge of the disk, the response is not reliable.