视听同步诱发电位在婴幼儿视听功能检查中的应用

目的:讨论视听同步诱发电位的特点,初步探讨其作为新颖的电生理检查方法应用于婴幼儿视听功能检查中的可行性。方法:30例1～3岁高热惊厥(FC)患儿和正常婴幼儿,分别进行单独听性脑干反应(ABR)、闪光视觉诱发电位(FVEP)和视听同步诱发电位的检测,与同时检测ABR和FVEP进行对比。结果:①婴幼儿各组ABR的Ⅰ、Ⅲ、Ⅴ波和FVEP的N1、P1、N2波在同步诱发后波形分化良好,潜伏期稳定,较单独ABR和单独FVEP检测波变得易辨认。②同步ABR-FVEP潜伏期随年龄增长亦有缩短的趋势,FVEP对ABR的各波潜伏期值影响显著(P<0.01),对ABR波间期影响无显著性(P>0.05)。③2～3岁组FC患儿同步FVEP-ABR各波的潜伏期、波间期均长于其他年龄组。④FC患儿同步ABR-FVEP的标准差较单独ABR和FVEP减少,异常率较单独ABR和FVEP的异常率有明显提高。结论:同步诱发电位作为一项全新的电生理检测手段,提高了检测效率,为婴幼儿视听功能的检测提供有力的技术支持。

A study of visual-auditory synchronous evoked potential in infants auditory and visual function test

Objective:To get data of visual-auditory synchrony evoked potential in febrile convulsion infants and normal infants,to compare their auditory brainstem responses(ABRs)and flash visual evoked potentials(FVEPs)alone to find the characteristics of visual-auditory synchrony evoked potential,and to provide a powerful electro-physiology method for early detection and early diagnosis of visual & auditory impairment in infants.Methods:Uhe tests of visual-auditory synchrony evoked potential,ABR and FVEP alone to 30 FC infants and normal infants,aged from 1-to 3-year-old were conducted.Results:In the testing of visual-auditory synchrony,wave Ⅰ,Ⅲ,Ⅴ of ABR and wave N1,P1,N2 of FVEP became more recognizable and well-differentiation.The latencies of their waves were tending to decrease as the age increased also.FVEP was found to have significant influence on the wave latency of ABR(P<0.01),none significant influence on the inter-wave latency of ABR(P>0.05).The latencies of ABR and FVEP in visual-auditory synchrony evoked potentials were longer than those in the other group in FC infants of 2-3-year-old.To FC infants,the SD of ABR and FVEP in visual-auditory synchrony evoked potential was smaller than that of in ABR and FVEP alone,and the abnormal rate was obviously higher than that of in ABR and FVEP alone.Conclusion:Visual-auditory synchrony evoked potential testing is a new electro-physiology method,increases the efficiency of the test,which would provide powerful suggestion to test visual & auditory function in infants.