Objective:To evaluate the value of combined evoked potential with continuous EEG to monitor the cases of severe cerebral vascular disease.Methods:48 cases of severe cerebral vascular disease were divided into severe or moderate groups based on the GCS(≤or>8).BAEP and SEP were used for monitoring of brain and brain stem functions.The BAEP and SEP results were divided into grade Ⅰ

grade Ⅱ and grade Ⅲ according to Cant’s classification.Continuous EEG monitored all patients by bedsides.The EEG findings were divided into 6 grades based on Young’s criteria.Results:(1)The mortality of the patients in the severe group was 40.00%

significantly higher than that in the group of moderate symptom(14.29%).The survivors with good outcome accounted for 35.71% in the moderate group

much better than those in the severe group.(2)The numbers of the patients with Ⅲ grade SEP and BAEP results in the severe group were higher than those in the moderate group.The mortality of the patients with Ⅲ grade SEP and BAEP results was high and the most of survivors were found with obvious disability in outcome.The patients with gradeⅠSEP and BAEP results showed a better outcome.(3)48 patients of cerebral vascular disease were monitored with continuous EEG monitoring by bedside.The results revealed that the mortality of the patients with gradeⅡEEG results was much higher than that of the patients with gradeⅠEEG results.Conclusion:The cerebral function of patients of severe cerebral vascular disease may be estimated precisely and objectively by using continuous monitoring of SEP

BAEP and EEG at bedside

which will provide valuable information about patient’s prognosis and treatment.