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The 24-h frequency-volume chart in adults reporting no voiding complaints: defining reference values and analysing
E P van Haarst1, E A Heldeweg, D W Newling
1Department of Urology, Sint Lucas Andreas Hospital, Amsterdam, The Netherlands. evhaarst@tiscali.nl
BJU International
|June 8, 2004
Summary
This study reveals that while voiding frequency increases with age in men, it fluctuates in women. Both sexes experience a decrease in voided volume per urination as they age, with men showing a more pronounced decline.
Area of Science:
- Urology
- Gerontology
- Epidemiology
Background:
- Understanding normal voiding patterns is crucial for identifying urological dysfunction.
- Age and gender significantly influence bladder function and urine production.
Purpose of the Study:
- To analyze voiding frequency, volume, and urine production using frequency-volume charts (FVC).
- To investigate the relationships between these variables across different age groups and genders in asymptomatic adults.
Main Methods:
- 1152 men and women over 20 years old completed a 24-hour frequency-volume chart.
- Data collected included voiding time, volume, and nocturnal voiding.
- Statistical analysis focused on FVC variables, gender, and age.
Main Results:
- Mean 24-hour voiding frequency and nocturia increased with age in men.
- Women's voiding frequency initially rose then slightly declined in older age groups, while nocturia increased.
- Mean volume per void decreased significantly with age in both genders, more so in men.
Conclusions:
- Age-related decreases in volume per void, more prominent in men, correlate with increased voiding frequency.
- Prostatic enlargement may contribute to increased frequency in aging men.
- Women's voiding frequency patterns differ from men's, showing an initial rise and later decline.
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