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[Cremasteric reflex. Its application to urological diagnosis].

T Sugiyama

    Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
    |August 1, 1989
    PubMed
    Summary
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    This study shows that cremasteric reflex testing can help pinpoint spinal cord injuries in men with urination or sexual problems. Abnormal or absent reflexes indicate potential neurological damage.

    Area of Science:

    • Neuroscience
    • Urology

    Context:

    • The cremasteric reflex is a spinal reflex crucial for male reproductive and urinary functions.
    • Assessing neurological integrity in patients with micturition or sexual disorders often requires evaluating lower spinal cord function.

    Purpose:

    • To investigate the diagnostic utility of the electrically evoked cremasteric reflex (EMG) for localizing neurological injuries in male patients with lower urinary tract symptoms or sexual dysfunction.
    • To establish normative data for cremasteric reflex latency and burst duration in healthy controls and compare it with patient data.

    Summary:

    • Electrically evoked cremasteric reflex responses were recorded in 55 adult males with micturition or sexual disorders and 20 controls.
    • Abnormal or absent reflexes were observed in over half of the patients, suggesting neural origin.

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  • Normal reflex latency ranged from 68-77 ms and burst duration from 52-59 ms in controls.

    • Impact:

    • The findings support the use of cremasteric reflex testing, combined with clinical symptoms, for diagnosing and localizing spinal cord or cerebral injuries.
    • Cerebral influences potentiate the reflex, potentially elongating burst duration with stronger stimuli.
    • Further research can refine neuro-urological diagnostic capabilities for lower spinal cord injuries.