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KMID : 0377219940190010058
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Medical Journal of Chosun Univercity
1994 Volume.19 No. 1 p.58 ~ p.65
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Brainstem Auditory Evoked Potentials in Differential Diagnosis of Vertigo
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Cho Kyung-Won
Jung Won-Young
Na Jeong-Kyun
Lim Gun-Han
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Abstract
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Sudden onset vertigo is a common complaint in patients who are referred for neurological evaluation. But the entire physical examination and other diagnostic tests may be normal in these patients. Therefore we need more accurate diagnostic tools in the differential diagnosis between the peripheral and the contral vertigo. To evaluate diagnostic effectiveness, we performed Brainstem Auditory Evoked Potentials(BAEP) in the patients with 19 brainstem infarction, 23 peripheral vertigo, 20 vertebrobasilar transient ischemic attack(VB TIA) and analyzed the absolute latency of wave Ⅰ, Ⅲ, Ⅴ and interpeak latency of wave Ⅰ-Ⅲ, Ⅲ-Ⅴ,Ⅰ-Ⅴ compared to normal control data. The results were summerized as follows : 1. There was no significant differences in absolute and interpeak latencies of each BAEP waves between the group of normal control and the group of peripheral vertigo. 2. Among 19 VB TIA patients, prolonged absolute and interpeak latencies of BAEP waves were detected in eleven patients(57.9%) and in nine patients(47.3%), respectively. The abnormal findings were bilaterally in five patients(26.3%) 3. Among 20 brainstem infarction patients, ten patients(50%) showed abnormal BAEP findings, including prolonged interpeak latencies(in three, 15%) and absence of waveform(in seven, 35%).
Therefore it is concluded that BAEP could be helpful in differential diagnosis of pathints with peripheral vertigo, V-B TlA, brainstem infarction and other disease of similiar symtomatology.
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KEYWORD
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vertigo, BAEP, BPPV, V-BTIA, Brainstem infarction
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