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KMID : 0359719920100040492
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Journal of the Korean Neurological Association
1992 Volume.10 No. 4 p.492 ~ p.501
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Short Latency Somatosensory Evoked potentials and Electroencephalography in Stroke
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이상도
임정근/박성파/이동국/박영춘
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Abstract
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Median nerve somatosensory evvoked potentials (SEP) and electroencephalography (EEG) were recorded in 85 patients with stroke (33 with thalamic hemorrhage, 20 with putaminal hemorrhage and 30 with cerebral infarction) to observe the origin of n19
and
P23 wave responses in median SEP and the origin of slow waves in EEG as well as to evaluate the prognostic correlation between stroke patients and SEP and EEG findings.
N19 and P23 were absent in 42.4% of patients with thalamic hemorrhage and 70% with putaminal hemorrhage. There was no case in which only P23 was absent in these two groups. In cerebral infarction, the most frequent finding was that both N19 and
P23
were
absent. P23 was absent with intact N 19 in 2 cases with localized cortical infarction. Therefore we suggest that N19 develops in thalamus or thalamocatical pathway and P23 in the parietal cortex.
There was no significant difference of EEG findings between thalamic hemorrhage and cerebral infarotion. It was unlikely that slow waves on EEG is a specific finding in a localized brain lesion.
The prognosis was poor in thalamic hemorrhage and cerebral infarction with loss of both N19 and P23 SEP findings and in cerebral infarction with moderate to severe degree of background abnormalities in EEG findings. So that, SEP and EEG findings
may be
useful for prognostic aspect.
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KEYWORD
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