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Voiding frequency, volumes and intervals in healthy schoolchildren
1Department of Paediatrics, Faculty of Health Sciences, University of Linköping, Sweden.
Scandinavian Journal of Urology and Nephrology
|March 1, 1994
Summary
Healthy schoolchildren aged 7-15 exhibit significant bladder control, voiding 3-8 times daily. Most children adapt their micturition patterns effectively to daily activities, demonstrating strong bladder management skills.
Area of Science:
- Pediatric Urology
- Developmental Biology
Background:
- Understanding normal micturition patterns in children is crucial for identifying potential urological issues.
- Previous studies have varied in scope and age groups, necessitating research focused on healthy school-aged populations.
Purpose of the Study:
- To characterize the typical micturition patterns in healthy schoolchildren aged 7-15 years.
- To establish baseline data for voiding frequency, volume, and timing in this demographic.
Main Methods:
- A prospective study involving 242 healthy schoolchildren (aged 7-15) who completed a 24-hour frequency/volume chart.
- Exclusion of children with reported bed-wetting or daytime incontinence, resulting in a final cohort of 206 participants.
Main Results:
- Healthy children voided 2-10 times daily, with 95% falling within the 3-8 voids per day range.
- Nighttime voiding occurred in 11.2% of children; morning voiding volumes were largest, and pre-bedtime voiding volumes were smallest.
- Voiding intervals decreased from morning to evening, indicating adaptation to daily routines.
Conclusions:
- Healthy schoolchildren demonstrate significant adaptability in their micturition patterns, often referred to as 'Boss of the Bladder' capability.
- Micturition parameters show considerable inter- and intra-individual variation, with weak correlations to age and body size.