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Journal of the Korean Geriatrics Society 2001;5(1):33-42.
Published online March 31, 2001.
Differences of Spectral EEG Analysis and Prognosis Following Single Hemispheric Infarction and Hemorrhage in Striatocapsular Area
Yong Tae Kwak, Il Woo Han, Seung Han Suk
Striatocapsular 위치의 단일 편측 뇌경색과 뇌출혈후에 나타나는 뇌파스펙트럼과 임상 예후의 차이
Abstract
BACKGROUND
Vascular dementia is common cause of dementia, second to the dementia of Alzheimer desease. However in Asia and many developing countries, the incidence of vascular dementia exceeds that of Alzheimer's disease. Though many stroke-related factors related the nature of vascular injury, e.g. infarction and hemorrhage, have not assessed yet. Clarifying the difference of electroencephalograpy and clinical prognosis between infarction and hemorrhage, the aim of this study was to elucidate the role of nature of vascular injury.
METHODS
to reduce confounding factors, the study population was restricted to the patients of single hemispheric striatocapsular infarction and hemorrhage saving cortex. On admission, we checked the KMMSE and FIM scores and using quantified EEG, we analyzed occipital peak frequency and the relative background alpha, theta and delta spectra power taken from 16 derivations by averaging twenty-2 -sec epoch in infarction, hemorrhage patients and elderly controls. After 6 months follow up, we compare the MMSE, FIM score between infarction and hemorrhage group.
RESULTS
1) Compared with infarction group, hemorrhage groups had a significantly bilateral lower occipital peak freqauency and background bilateral alpha spectra power. 2) In hemorrhage group, there is lower tendency in K-MMSE after 6 month follow up compared to infarction group.
CONCLUSION
This study suggests that hemorrhage show more bilateral electrophysiological dysfunction than infarction group and possible grave prognosis for vascular dementia compared to infarction group.
Key Words: Vascular dementia, Infarction, Hemorrhage, Spectra power
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