The frequency/volume chart in detrusor instability

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Abstract
This study was done to evaluate the use of the frequency/volume chart in patients with motor urgency. Pretreatment data from a study of the effects of terodiline in women with motor urgency incontinence were used and compared with the findings of an investigation of healthy female volunteers. The relation of the values from the frequency/volume chart to cystometric data in the group of motor urgency patients were also studied. In spite of the statistically significant differences between the two groups in the parameters of the frequency/volume chart, it is concluded that the overlap between the groups limits the use of the chart for diagnostic purposes at this stage. The mean voided volume (total voided volume/frequency) is considered a reliable measure of the severity of motor urgency. No correlation was found between the data of the frequency/volume chart and cystometry. It is suggested that cystometry mainly gives a qualitative measure of motor urgency, whereas the frequency/volume chart offers objective and reliable quantitative information of the symptoms, and thus supplements the cystometric evaluation.