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Related Experiment Videos

Central effect of bladder filling and voiding.

J Mai, E Pedersen

    Journal of Neurology, Neurosurgery, and Psychiatry
    |February 1, 1976
    PubMed
    Summary

    Bladder filling alters muscle reflexes, with distinct patterns linked to easy or difficult urination initiation. These reflex changes, including H reflexes, T reflexes, and flexor reflexes, are crucial for understanding micturition disturbances.

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    Area of Science:

    • Neuroscience
    • Urology
    • Physiology

    Background:

    • Somatic muscle reflexes are influenced by visceral organ activity.
    • Understanding the interplay between bladder function and somatic reflexes is key to diagnosing micturition disorders.

    Purpose of the Study:

    • To investigate changes in somatic muscle reflexes during urinary bladder filling.
    • To identify distinct reflex patterns associated with different voiding initiation difficulties.
    • To explore the clinical significance of these reflex patterns in urological complaints.

    Main Methods:

    • Observation of somatic muscle reflexes in normal subjects and patients with spasticity or urological complaints.
    • Monitoring reflex changes in relation to urinary bladder filling and voiding initiation.

    Main Results:

    • Two primary patterns of reflex changes were identified during bladder filling.
    • Pattern 1 (easy voiding): Increased H and T reflexes, decreased flexor reflexes, and reduced sphincter activity.
    • Pattern 2 (difficult voiding): Increased flexor reflexes and sphincter activity, decreased H and T reflexes.

    Conclusions:

    • Specific somatic muscle reflex patterns correlate with the ease or difficulty of initiating urination.
    • These reflex alterations provide insights into the pathophysiology of micturition disturbances.
    • Observed reflex changes during voiding include decreased flexor reflexes and increased H and T reflexes.

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