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Related Experiment Videos

Auditory brain stem responses in patients with vertigo.

U Rosenhall, K Pedersen, E Johansson

    Clinical Otolaryngology and Allied Sciences
    |June 1, 1984
    PubMed
    Summary

    Auditory brainstem response (ABR) tests reveal brainstem dysfunction in some vertigo patients, particularly those with vestibular neuronitis. Abnormal ABR findings often persist even after symptom recovery, suggesting lasting neurological effects.

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    Area of Science:

    • Neurology
    • Otolaryngology
    • Neurophysiology

    Background:

    • Vertigo is a common condition with various underlying causes.
    • Vestibular neuronitis, epidemic vertigo, and benign positional vertigo are distinct etiological categories.
    • Auditory brainstem response (ABR) is a neurophysiological test assessing the auditory pathway and brainstem function.

    Purpose of the Study:

    • To investigate the utility of ABR in differentiating vertigo subtypes.
    • To identify potential brainstem involvement in patients presenting with vertigo.
    • To correlate ABR findings with specific vertigo diagnoses and disease recovery.

    Main Methods:

    • Sixty-two patients diagnosed with vertigo were recruited for the study.
    • All participants underwent Auditory Brainstem Response (ABR) testing.

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  • Patients were categorized into vestibular neuronitis, epidemic vertigo, and benign positional vertigo groups.

    • Main Results:

    • Eight out of 30 patients (26.7%) with vestibular neuronitis exhibited abnormal ABR results, suggesting brainstem dysfunction.
    • In most cases with abnormal ABR, the abnormalities persisted post-recovery from vestibular neuronitis.
    • Only one patient with epidemic vertigo showed abnormal ABR; all 16 patients with benign positional vertigo had normal ABR results.

    Conclusions:

    • ABR can be a valuable tool in assessing brainstem function in vertigo patients, particularly those with suspected vestibular neuronitis.
    • Persistent ABR abnormalities in vestibular neuronitis may indicate subclinical or residual central nervous system involvement.
    • Normal ABR results in benign positional vertigo support its peripheral vestibular origin, distinguishing it from central causes.