[Evaluation of electroencephalography grading standard in severe cerebrovascular disease].
OBJECTIVE
To compare the prognostic value of different electroencephalography (EEG) grading standards of cerebral dysfunction after cerebrovascular diseases.


METHODS
The EEG of all the 40 patients who suffered from acute cerebrovascular disease of the cerebral hemisphere were recorded continuously, and three different EEG grading standards (Lavizzari, Synek and Young) were analyzed and compared.


RESULTS
All three different EEG grading standards showed significant correlation with outcome (all P<0.001), i. e. the higher the EEG grade was, the poorer the outcome was. Logistic regression showed that the Synek standard was the best for survival rate and comprehensive prognostic accuracy (90.9%, 89.2%, respectively), Young standard (81.8%, 83.8%) was lower than Synek standard in predicting accuracy but higher than Lavizzari standard (75.%, 80.% respectively).


CONCLUSIONS
The EEG grading standard of Synek might well reflect the cerebral dysfunction and appear to be a reliable predictor for outcome.
Wang
Xiao-mei
XM
Neuro-Intensive Care Unit, Xuanwu Hospital Affiliated to Capital University of Medical Sciences, Beijing 100053, China.
Su
Ying-ying
YY
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002561:Cerebrovascular Disorders / Q000175:diagnosis* / Q000503:physiopathology; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis