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[Study of bulbocavernosus reflex using electrostimulation electromyography].

Y Komeda, H Kato, K Saito

    Hinyokika Kiyo. Acta Urologica Japonica
    |September 1, 1984
    PubMed
    Summary

    The bulbocavernosus reflex test measures nerve function in voiding patients. Diabetic neuropathy significantly prolongs reflex latency, aiding diagnosis.

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    Area of Science:

    • Neuroscience
    • Urology
    • Electrophysiology

    Context:

    • The bulbocavernosus reflex is a key indicator of neurological function in the lower urinary tract.
    • Assessing this reflex is crucial for diagnosing various voiding dysfunctions.
    • Previous methods for evaluating the bulbocavernosus reflex were less precise.

    Purpose:

    • To evaluate the evoked response of the bulbocavernosus reflex in normal individuals and patients with voiding abnormalities.
    • To compare the reflex latency in patients with benign prostatic hyperplasia, diabetic neuropathy, and supranuclear neurogenic bladder.
    • To establish the utility of neurophysiological electrostimulation for assessing bulbocavernosus reflex function.

    Summary:

    • Evoked bulbocavernosus reflex responses were recorded in 8 controls and 15 patients (8 BPH, 4 diabetic neuropathy, 3 supranuclear neurogenic bladder).

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  • Control group latencies were 31.5 ± 5.0 ms (penile stimulation) and 65.4 ± 11.0 ms (posterior urethral stimulation).
  • Latency was significantly prolonged in diabetic neuropathy but not in supranuclear neurogenic bladder, indicating differential neurophysiological impact.

    • Impact:

    • This electrostimulation method offers a simple and accurate neurophysiological assessment of the bulbocavernosus reflex.
    • Findings highlight the diagnostic value of this technique in differentiating causes of voiding dysfunction.
    • Provides objective data for understanding the pathophysiology of neurological bladder disorders.