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Clinical Experience with the Vestibular Evoked Myogenic Potential

Authors: David A. Zapala; Robert H. Brey;

Clinical Experience with the Vestibular Evoked Myogenic Potential

Abstract

The vestibular evoked myogenic potential (VEMP) is a promising test of the descending vestibulocollic system. Our aim was to determine whether the VEMP can be applied to an older patient population and can detect lesions in descending vestibulospinal pathways. We also compared VEMP clinical performance with that of the standard caloric test. VEMP test performance was retrospectively analyzed in relation to clinical diagnosis and other vestibular test performance in 62 patients (age, 30–85 years) referred for vestibular testing to Mayo Clinic, Jacksonville, Florida. The VEMP was evoked using a 250 Hz tone burst. Results suggest age-related changes in VEMP amplitude and latency in this patient population. VEMP tests were sensitive to lesions not detected by electronystagmography. VEMP and caloric sensitivity and specificity were essentially equal (d′ = 1). Combining both tests improved sensitivity. However, VEMP false-positive rates hampered specificity. VEMP testing may be refined to improve false-positive rates and clinical utility. El potencial evocado miogénico vestibular (VEMP) es una prueba promisoria para el sistema vestíbulo-colicular descendente. Nuestro propósito fue determinar si los VEMP pueden ser aplicados a una población de pacientes de mayor edad y si pueden detectar lesiones en la vía vestibuloespinal descendente. También comparamos el desempeño clínico del VEMP con el de las pruebas calóricas convencionales. Se analizó retrospectivamente el desempeño de la prueba de VEMP con relación al diagnóstico clínico y al rendimiento de otras pruebas vestibulares en 62 pacientes (edades: 30-85 años), referidos a la Clínica Mayo en Jacksonville, Florida, para evaluación vestibular. El VEMP fue evocado utilizando un burst tonal de 250 Hz. Los resultados sugieren cambios relacionados con la edad tanto en la amplitud como en la latencia del VEMP en esta población de pacientes. Las pruebas de VEMP fueron sensibles a lesiones no detectadas por electronistagmografía. La sensibilidad y la especificidad del VEMP y de las pruebas calóricas fue esencialmente igual (d′ = 1). La combinación de ambas pruebas mejoró la sensibilidad. Sin embargo, la tasa de falsos positivos con VEMP afectó la especificidad. La evaluación por VEMP puede ser refinada para mejorar la tasa de falsos positivos y su utilidad clínica.

Related Organizations
Keywords

Adult, Aged, 80 and over, Male, Aging, Electromyography, Middle Aged, Dizziness, Sensitivity and Specificity, ROC Curve, Vestibular Diseases, Muscle Fatigue, Caloric Tests, Evoked Potentials, Auditory, Humans, False Positive Reactions, Female, Saccule and Utricle, Aged, Retrospective Studies, Spinocerebellar Degenerations

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    49
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
49
Top 10%
Top 10%
Top 10%
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