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Related Experiment Videos

Uroflowmetry in asymptomatic elderly males.

J B Jørgensen, K M Jensen, N E Bille-Brahe

    British Journal of Urology
    |August 1, 1986
    PubMed
    Summary

    This study reveals that maximum urine flow rate (Q max) significantly declines with age in men, with median Q max dropping from 18.5 ml/s at 50 to 6.5 ml/s at 80 years.

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    Frontiers in medicine·2017

    Area of Science:

    • Urology
    • Gerontology
    • Medical Diagnostics

    Background:

    • Prostatism evaluation often relies on uroflowmetry.
    • Age-related changes in male lower urinary tract function are not fully characterized.
    • Establishing normative uroflowmetry data across age groups is crucial for accurate diagnosis.

    Purpose of the Study:

    • To assess uroflowmetry parameters in asymptomatic men across a relevant age spectrum.
    • To investigate the correlation between age and key uroflowmetry variables.
    • To establish normative data for maximum flow rate (Q max) and voided volume in relation to age.

    Main Methods:

    • Random sampling of 93 men from the National Register, representative of the male metropolitan population.
    • Uroflowmetry performed on participants with no subjective voiding complaints.
    • Data analyzed and presented graphically in nomograms, correlating flow variables (Q max/volume, Q average/volume, Q max time/volume) with age.

    Main Results:

    • Median Q max decreased significantly with age, from 18.5 ml/s at 50 years to 6.5 ml/s at 80 years.
    • Only one-third of the study group achieved a Q max exceeding 15 ml/s.
    • Median voided volume was 208 ml, with half voiding less than 200 ml and one-third less than 150 ml.

    Conclusions:

    • Age is a significant factor influencing uroflowmetry results in men.
    • Normal Q max values decrease substantially with advancing age.
    • These findings provide age-specific reference ranges for uroflowmetry, aiding in the evaluation of prostatism.

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