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Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
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Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
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Introduction to Urinary System01:13

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The urinary system consists of two kidneys, two ureters, the urinary bladder, and the urethra.
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Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
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Related Experiment Video

Updated: Dec 12, 2025

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
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[Primary development of visual uroflow scale].

W Y Zhang, H R Wang, X H Liu

    Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences
    |August 11, 2020
    PubMed
    Summary
    This summary is machine-generated.

    The Visual Uroflow Scale (VUS) offers a quick and easy way for clinicians to assess male lower urinary tract symptoms (LUTS) and track treatment effectiveness. This new scale correlates well with standard uroflowmetry tests, improving patient evaluation.

    Keywords:
    Free uroflowmetryLower urinary tract symptoms (LUTS)Visual uroflow scale (VUS)

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    Area of Science:

    • Urology
    • Medical Diagnostics
    • Patient Assessment

    Background:

    • Male lower urinary tract symptoms (LUTS) require effective diagnostic tools.
    • Current methods may not always be efficient for preliminary assessment.
    • There is a need for a simple, patient-administered tool to evaluate urination function.

    Purpose of the Study:

    • To develop the Visual Uroflow Scale (VUS).
    • To analyze the correlation between VUS scores and free uroflowmetry parameters.
    • To preliminarily assess urination function and enhance clinical efficiency.

    Main Methods:

    • Male LUTS patients underwent VUS assessment before free uroflowmetry.
    • Key uroflowmetry variables measured included maximal flow rate (Qmax), average flow rate (Qave), and voiding volume (VV).
    • Spearman correlation analysis was used to evaluate the relationship between VUS scores, uroflowmetry variables, and age in 53 patients.

    Main Results:

    • VUS scores showed positive correlations with voiding time and flow time (r=0.62, r=0.61; P<0.05).
    • Higher VUS scores indicated worse LUTS, longer voiding times, and were negatively correlated with Qmax and Qave (r=-0.54, r=-0.62; P<0.05).
    • VUS effectively reflects urination function and correlates with age-related decline in function.

    Conclusions:

    • The VUS is a valuable tool for preliminary assessment of urination function in male LUTS patients.
    • VUS provides an objective basis for evaluating treatment efficacy before and after interventions.
    • The scale is convenient, time-saving, easy to understand, and suitable for follow-up assessments.