0～6岁听力正常儿童短纯音听性脑干反应的研究

李雪蕾;白燕;周媛;李年琼;徐洁;

1:重庆医科大学附属儿童医院耳鼻咽喉科

摘要

目的比较0～6岁听力正常儿童不同年龄段短纯音听性脑干反应(tone burst auditory brainstem re-sponse,tb-ABR)反应阈及波Ⅴ潜伏期,评价tb-ABR在0～6岁儿童听力评估中的意义。方法将120例0～6岁听力正常儿童根据年龄分为A(0～岁)、B(1～岁)、C(3～6岁)组,每组各40例,进行tb-ABR及行为听阈测试,比较不同年龄段的tb-ABR反应阈和波Ⅴ潜伏期的差异及tb-ABR反应阈与行为听阈的相关性。结果在1、2、4kHz,各组tb-ABR反应阈差异无统计学意义;在0.5kHz,B组tb-ABR反应阈为46.3±11.5dB nHL,较A组(40.7±13.6dB nHL)和C组(35.6±9.2dB nHL)高,差异有统计学意义;B组各频率反应阈与行为听阈相关性均较A、C组低,其中在0.5kHz相关性最低;各组内tb-ABR反应阈与行为听阈的相关性均随刺激声频率升高而越好,各组tb-ABR波Ⅴ潜伏期均随刺激声频率增高而缩短,同一刺激频率下波Ⅴ潜伏期及I-V波间期随年龄增加逐渐缩短。结论 0～6岁听力正常儿童tb-ABR反应阈与行为听阈均有良好相关性,但其低频的准确性还有待进一步探讨。

关键词

听性脑干反应;短纯音;儿童

基金项目(Foundation):

重庆市卫生局课题资助(2-166)

作者

李雪蕾;白燕;周媛;李年琼;徐洁;

参考文献

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听性脑干反应短纯音儿童

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李雪蕾白燕周媛李年琼徐洁