脑干听觉诱发电位在听阈正常的语言发育迟缓患儿中的意义

目的 探讨脑干听觉诱发电位（BAEP）在听阈正常而语言发育迟缓患儿中的变化规律及应用价值.方法 分析100例听阈正常而语言发育迟缓患儿BAEP的变化规律;按年龄分组比较两个年龄段之间各波的延长时间.结果 （1）BAEP正常10例,异常90例,BAEP表现为Ⅰ、Ⅴ波潜伏期（PL）延长,Ⅲ~Ⅴ、Ⅰ~Ⅴ波峰间期（IPL）延长;（2）随着年龄增长,Ⅴ波PL与Ⅲ~Ⅴ波IPL延长时间越长.结论 Ⅰ波、Ⅴ波延长对早期诊断听阈正常而语言发育迟缓患儿具有一定的意义,说明即使听阈正常也可能存在听觉传导通路异常,且随着年龄增加,脑干上段受损越严重.

The significance of brainstem auditory evoked potential in children with language retardation and normal hearing hhreshold

Objective To explore the change and the application value of brainstem auditory evoked potential （BAEP） in children with language retardation and normal hearing threshold. Methods The law of brainstem auditory evoked potential （BAEP） in 100 cases of children with language retardation and normal hearing threshold were analyzed. The lengthen time were compared between two groups according to the age. Results （1） 90 cases were abnormal and 10 cases were normal for BAEP. The lengehen time was abnormal both at the peak lateney（PL） of I , V waves and the interval peaks latency （IPL） of Ⅲ - V, I - V waves. （2） The PL of V wave and the IPL of Ⅲ- V wave were prolonged with age in children with language retardation and normal hearing threshold. Conclusion The extension of I , V waves has a certain significance in early diagnosis of children with language retardation and normal hearing threshold. The normal hearing threshold may be co-existed with auditory conduction passage impairment,and as age increases, as superior segment of brain stem is damaged severly.