Resumen

CABRERA ABREU, I. et al. Findings in the auditory brainstem response of patients with peripheral vertigo. Enferm. glob. [online]. 2009, n.15. ISSN 1695-6141.

Most vertigo syndromes are benign processes that are resolved with or without treatment in a short period of time, but there is the possibility that the symptoms may represent an important neurologic disease. Specifically, periphery vertigos appear due to a lesion in the vestibular receptors (labyrinths) or in the statoacoustic nerve. Auditory Brainstem Response is among the most useful clinical tests to document the existence of a lesion of the statoacoustic nerve. In turn, it may offer information about the vestibular component. Thirty-seven inpatients or patients coming from the office of International Center for Neurological Restoration were sent to our service diagnosed with vertiginous syndrome of a peripheral cause. These patients were given ABR, following the established routine from the laboratory-procedure manual, previous the subjective evaluation of the hearing threshold. It was found that such study was positive in 78.38% of studied cases, and a greater percentage of anomalies were related to wave-amplitude (which suggests an axonal damage of the statoacoustic nerve); whereas parameters of absolute wave-latency and interpeak intervals practically did not show any variations. Our results confirmed the existence of functional anomalies in the statoacoustic nerve of studied patients with peripheral vertigo syndrome.

Palabras clave : Auditory Brainstem Response; Vertigo; Statoacoustic Nerve.

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