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Related Experiment Videos

Urinary flow rate in benign prostatic hypertrophy.

R M Anikwe

    International Surgery
    |February 1, 1976
    PubMed
    Summary

    Measuring urinary flow rate is a reliable screening tool for men over 50 suspected of having bladder outlet obstruction due to benign prostatic hypertrophy. Normal flow rates exceed 15 ml/sec, while obstructed cases typically fall below this threshold.

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    Area of Science:

    • Urology
    • Andrology

    Background:

    • Benign prostatic hypertrophy (BPH) is a common condition in men over 50.
    • Bladder outlet obstruction (BOO) is a frequent complication of BPH.
    • Accurate diagnosis of BOO is crucial for effective management.

    Purpose of the Study:

    • To evaluate the efficacy of multiple urinary flow rate measurements as a screening tool for BOO in men over 50.
    • To establish a threshold for mean peak flow rate indicative of BOO.

    Main Methods:

    • Collected urinary flow measurements from four groups: men without BOO, men with doubtful BOO, men with proven BOO, and men before/after prostate surgery.
    • All participants were over 50 years of age.

    Main Results:

    • Non-obstructed men exhibited mean peak flow rates ranging from 11.8 to 35.0 ml/sec, with a minimum threshold of 15.0 ml/sec for voided volumes ≥200 ml.
    • The majority of men with BOO had mean peak flow rates below 15.0 ml/sec.
    • Post-prostatic surgery, mean peak flow rates normalized.

    Conclusions:

    • Multiple urinary flow rate determinations are justified as a routine screening examination for suspected BOO in men over 50 with BPH.
    • A mean peak flow rate below 15.0 ml/sec is a strong indicator of BOO.

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