恢复期脑炎患儿脑干听觉诱发电位的研究

Study on Brainstem Auditory Evoked Potential in Children with Encephatitis at Recovery Stage

目的 :探讨脑干听觉诱发电位 (BAEP)的检测在恢复期脑炎患儿听觉功能亚临床损害的诊断价值。方法 :对 30例恢复期病毒性脑炎患儿和 30例年龄性别相仿的正常小儿进行BAEP检测 ,观察Ⅰ、Ⅲ、Ⅴ 3个主要波的潜伏期 (PL)、波间期 (IPL)和波幅 (AMP)以及V/I波幅比值。结果 :患儿组BAEP异常 16例占 5 3.3% ,主要表现为I波正常 ,Ⅲ、Ⅴ波分化不良或波形消失 ,Ⅲ波或V波PL延长 ,Ⅰ～Ⅲ及Ⅲ～ⅤIPL延长。结论 :BAEP的检测是判断小儿脑炎后期中枢神经系统功能失调的可靠证据 ,对恢复期脑炎患儿听觉功能亚临床损害的检测具有重要的临床意义。

Objectve:To explore the diagnostic value of brainstem auditory evoked potential(BAEP) towards the functional damage of auditory pathway in children.Methods: BAEP was detected in 30 children with encephalitis recovery stage and in 30 age and sex matched non-encephalitic healthy subjects as a control.The peak latency(PL) and change of wave Ⅰ,Ⅲ,Ⅴ, the interpeak latency(IPL) of wave Ⅰ～Ⅲ,Ⅲ～Ⅴ,Ⅰ～Ⅴ,Ⅴ/Ⅰ were observed.Results:BEAP was abnormal in 16 cases of encephalitis with the abnormal rate being 53.3%,showing normal wave Ⅰ,undifferentiation or disappearance of wave Ⅲ and Ⅲ～Ⅴ.Conclusion:BAEP detection of might be a sensitive method in determining the disfunction of central nervous system in recovery children with encephalitis.It contributes to the detection of the functional damage of auditory pathway in recovery children with encephalitis.