ANALYSIS OF VOIDED URINE VOLUMES MEASURED USING A SMALL ELECTRONIC POCKET BALANCE

The aim of this research was to analyse variations in voided volumes a nd duration and time of voiding during daily activities on a physiolog ical basis, and to explore the possible diagnostic value of the associ ated parameters. A small electronic device was developed to accurately measure voided urine volumes in healthy volunteers during consecutive periods of two to three weeks. In subsequent analysis, the voided vol umes were related to the time interval between voidings and the durati on of voiding. Three parameters could be identified that quantify diff erent aspects of bladder capacity (modal volume, maximum volume and a threshold volume in the relation between average flow-rate and voided volume). By relating voided volumes to the time interval between voidi ngs the circadian rhythm in urine production was detected.