The Value Of Video-electroencephalography,Brainstem Auditory Evoked Potential And MRI For Early Diagnosis Of Viral Encephalitis In Children

ObjectiveThis study conducted contrastive analysis of video-electroencephalography(VEEF),brainstem auditory evoked potential(BAEP)and MRI for diagnosing the abnormal rate in children with viral encephalitis,aiming to discuss the early diagnostic value of viral encephalitis in children.MethodsThe clinical data of 110 children with viral encephalitis were collected from Chenzhou city children's hospital of child neurology between January 2016 and December 2016.They were the observation group while the control group had 135 child patients with hyperpyretic convulsion at the same period.All patients were tested with VEEG,BAEP and MRI head scan 2 days after hospital admission to summarize and conclude the clinical features of viral encephalitis,the above complementary characteristics and abnormal conditions.Results 1.The most common clinical features of viral encephalitis are fever(86.36%),headache(48.18%),vomiting(50.91%),disturbance of consciousness(13.64%)and convulsion(9.09%).2.The abnormal rates detected by VEEG,BAEP and MRI head scan in the observation group were 49.09%,30.00% and 18.18% respectively while the same rates detected by VEEG,BAEP and MRI head scan in the control group were 9.63%,7.41% and 2.96% respectively.The rates of the former were obviously higher than the latter with differences in statistical significance(P<0.05).In the observation group,the abnormal rate detected by VEEG was higher than both BAEP and MRI head scan and the rate detected by BAEP was greater than MRI head scan.All differences showed statistical significance(P<0.05).3.The combined abnormal rates detected by VEEG and BAEP in the observation group was 70.00%,which was significantly higher than VEEG abnormal rate.The difference had statistical significance(P<0.05).4.The VEEG abnormality in the observation group was shown as increased slow wave in background with focal high amplitude of ? and ? waves.Some spike waves,sharp slow waves and spike slow complex waves were seen.5.The BAEP abnormality in the observation group was shown as abnormal III and V waves,increased threshold,V/I specific value was <0.5,extended PL in III and V waves and extended IPL in III-V waves.In severe cases,extended PL was observed in I,III and V waves as well as extended and even missing IPL in I-V waves.Abnormality was shown between ears.6.The MRI head scan abnormality in the observation group was shown as abnormal signal of brain parenchyma(tall signals of T2 WI,DWI,T1 WI and T2FLAIR),expanded ventricle and widened gap outside of brain.ConclusionsVEEG,BAEP and MRI head scan has significance to early auxiliary diagnosis of viral encephalitis in children,in which VEEG abnormality was the highest followed by BAEP.The joint detection of these two can increase the early diagnostic rate of viral encephalitis in children.