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Urinary flow in healthy schoolchildren

S Mattsson1, A Spångberg

  • 1Department of Pediatrics, University Hospital, Linköping, Sweden.

Neurourology and Urodynamics
|January 1, 1994
PubMed
Summary
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This study analyzed urinary flow in 180 children using a new uroflowmeter. Reliable assessment requires two micturitions, with the "bell-shaped" curve being key for healthy urinary flow.

Area of Science:

  • Pediatric Urology
  • Urodynamics
  • Child Health

Background:

  • Assessing urinary flow in children is crucial for diagnosing voiding dysfunction.
  • Previous studies have limitations in sample size and methodology.
  • Standardized uroflowmetry parameters in healthy children require further investigation.

Purpose of the Study:

  • To evaluate urinary free flow parameters in healthy schoolchildren aged 7-16 years.
  • To establish normal uroflowmetry values and identify influencing factors like age and sex.
  • To compare findings with existing pediatric uroflowmetry data.

Main Methods:

  • 180 healthy schoolchildren (7-16 years) underwent uroflowmetry using a novel device.
  • Each child provided at least two voiding curve registrations at school toilets.

Related Experiment Videos

  • Urinary flow was analyzed for curve shape and parameters: voided volume, maximum flow rate, average flow rate, time to maximum flow, and voiding time.

    • Main Results:

    • The normal urinary flow curve is consistently "bell-shaped" and voided in one portion.
    • Two micturitions are recommended for reliable curve assessment; the first often shows lower flow rates.
    • Voided volume, maximum flow rate, and average flow rate increase with age and body size; girls exhibit higher flow rates.
    • Flow parameters correlate significantly with voided volume, except for flow at 0.5 seconds.

    Conclusions:

    • The "bell-shaped" curve is a reliable indicator of normal urinary flow in children.
    • Age and body parameters influence urinary flow rates, with significant differences observed between sexes.
    • This study provides updated, reliable uroflowmetry data for healthy children, highlighting differences from prior research.