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人工耳蜗植入术对植入耳残余听力的影响

Residual Hearing after Cochlear Implantation in Children

蔡蕾;华清泉;曹永茂;杨琨;朱素琴;常伟;李骏;

1:武汉大学人民医院耳鼻咽喉-头颈外科

2:湖北省妇幼保健院

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摘要

目的探讨人工耳蜗植入对植入耳残余听力的影响。方法 34例行单侧人工耳蜗植入的重度或极重度感音神经性聋儿童,按术后检查时间分为A组(312个月)21例、B组(≥13个月)13例,分别于术前及术后312个月)21例、B组(≥13个月)13例,分别于术前及术后321个月定期进行裸耳游戏测听,比较各组250、500、1 000、2 000Hz各频率手术前后残余听力保存率及听阈变化。结果 34例术前植入耳均有不同程度的残余听力,其中25例(73.53%)植入耳术后仍保留部分残余听力且主要分布于低频区,9例残余听力丧失;术后各频率听阈均值均较术前升高,差异有统计学意义(P<0.05),250Hz残余听力保留率最高,2 000Hz保留率最低;不同频率残余听力损失值差异有统计学意义(P<0.01),以500Hz和1 000Hz损失最大;A组不同频率间残余听力损失值差异有显著统计学意义(P<0.01),B组不同频率间残余听力损失值差异无统计学意义(P>0.05),A组手术前后1 000Hz听阈差值大于B组(P<0.05),其它频率间听阈差值差异无统计学意义(P>0.05),随着人工耳蜗植入时间延长,各频率听力损失值总体呈逐渐下降的趋势。结论人工耳蜗植入对植入耳低频区残余听力的影响较高频区小,随着植入时间延长,残余听力有一定程度的恢复。

关键词

人工耳蜗植入;残余听力

基金项目(Foundation):

作者

蔡蕾;华清泉;曹永茂;杨琨;朱素琴;常伟;李骏;

参考文献

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