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[Vestibular evoked myogenic potential findings on multiple sclerosis]
L Felipe1, S A S Carvalho, L C M Cunha
1Curso de Posgrado en Infectología y Medicina Tropical, Universidad Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil. lilianfelipe@hotmail.com
Introduction:
Vestibular evoked myogenic potential (VEMP) elicited by acoustic stimulation, has been proposed in the assessment of vestibulospinal pathways.
Aim:
To research the clinical utility of VEMP on multiple sclerosis (MS).
Subjects And Methods:
Forty-four individuals were evaluated (30 normal state and 14 had MS). The acoustic stimuli were short tone burst (1 kHz, 118 dBNa, rise-fall 1 ms, plateau 2 ms) presented through a supra-aural earphone. The stimulation rate was 5 stimuli per second.
Results:
All the healthy subjects showed a normal VEMP response. In the MS group, abnormal VEMP was recorded among 92.8% of patients and normal in just one case. The P13-N23 increased of prolongation which was the most frequently alteration (57.1%), followed by absence of response among four (28.5%) cases.
Conclusion:
VEMP was considered a good method of diagnostic support of vestibulospinal tract in cases of MS.
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