Oculomotor evaluation in patients with peripheral vestibular dysfunction

Revista Brasileira de Otorrinolaringologia

Tuma, Vanessa Costa¹  Ganança, Maurício Malavasi¹  Unifesp-EPM¹  Caovilla, Heloisa Helena¹  Ganança, Cristina Freitas¹ 

关键词: vestibular dysfunction;    vectonystagmography;    vertigo.;   

DOI  :  10.1590/S0034-72992006000300019

学科分类：医学（综合）

来源: Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial

【 摘 要 】

AIM: To assess whether or not the parameters of fixed and randomized saccadic movements, of pendular tracking and of optokinetic nystagmus in the digital vectonystagmography may show abnormalities in patients with possible diagnosis of peripheral vestibular dysfunction.METHOD: 60 patients with dizziness of peripheral vestibular origin, from 12 to 82 years of age, males and females, were evaluated in the Universidade Federal de São Paulo. Ocular movement parameter findings were compared to a normal pattern.RESULTS: Fixed saccadic movements were altered in 100% of the cases as to latency, and in 35.0% of the cases as to speed; the randomized saccadic movements were altered in 100% of the cases as to latency, in 78.3% as to precision, and in 1.7% as to speed; the pendular tracking showed a gain alteration in the frequencies of 0.1 Hz in 15% of the cases, 0.2 Hz in 21.7%, and 0.4 Hz in 13.3%; the optokinetic nystagmus showed an alteration of the angular speed in the slow component in 1.7% of the cases, and in gain in 5.0%.CONCLUSION: Fixed saccadic movement latency and speed, randomized saccadic movement latency, precision and speed, pendular tracking gain, slow component angular speed, and optokinetic nystagmus gain in the digital vectonystagmography may show abnormalities in patients with possible diagnosis of peripheral vestibular dysfunction.

【 授权许可】

Unknown