Abstract: Objective To investigate the value of electroencephalography, somatosensory evoked potential and brainstem auditory evoked potential on the evaluation of cerebral function of patients with severe cerebrovascular disease. Methods In 24 hours after admitted to hospital, the patients with severe cerebrovascular disease were examined by electroencephalography, somatosensory evoked potential and brainstem auditory evoked potential. The prognosis of cerebral function were evaluated 3 months after the onset of severe cerebrovascular disease or when the patients died in 3 months. Analyze the relationships between the results of the exams above and cerebral function prognosis. Results Ordinal logistic regression analysis found that electroencephalography(P=0.002), somatosensory evoked potential(P＜0.001) and brainstem auditory evoked potential(P=0.002) have a significant effect on the prediction of cerebral function prognosis of severe cerebrovascular disease patients. Conclusion By using electroencephalography, somatosensory evoked potential and brainstem auditory evoked potential exams can make a prediction of prognosis of severe cerebrovascular disease. This is of great importance in evaluating the illness, predicting prognosis, diagnosing and treating severe cerebrovascular disease.

Key words: severe cerebrovascular disease, cerebral function, electroencephalography, somatosensory evoked potential, brainstem auditory evoked potential, prediction of prognosis