30例中度感音神经性聋老年人堵耳效应研究  

Investigation on the occlusion effects of 30 elderly people with moderate sensorineural hearing loss

作　　者：蒋雯[1] 胡旭君[1] 

机构地区：[1]浙江中医药大学听力与言语科学学院,杭州310053

出　　处：《中国听力语言康复科学杂志》2008年第5期24-27,共4页Chinese Scientific Journal of Hearing and Speech Rehabilitation

摘　　要：目的通过对患有中度感音神经性聋老年人的堵耳效应(occlusion effect)特点的研究,为临床上该类老年人在助听器验配时减轻堵耳效应提供参考。方法通过电耳镜观察和纯音测听筛选出30例中度感音神经性听力损失的老年人,对这30例分别进行裸耳气骨导测试,在外耳道按不同的深度放置耳样,再测试相应位置受试者的骨导听力变化。结果耳样深度超过外耳道峡2mm时测得的堵耳效应与耳样深度至外耳道峡处和耳样在外耳道峡前2mm时测得的堵耳效应值在0.25、0.5和1kHz处有显著性差异。男女性别间堵耳效应差异无统计意义。结论堵耳效应主要发生在低频且外耳道软骨部可以自由振动的情况下,但如果耳样深至骨部则堵耳效应明显减弱或几乎没有,无性别差异。Objective To investigate the occlusion effects on elderly people with moderate sensorineural hearing loss and to provide support to reduce the occlusion effect in hearing aids fitting. Methods 30 elderly people with moderate sensorineural hearing loss received both air and bone conduction pure-tone audiometry. The subjects had the earmolds inserted into the ear canals at different positions in relation to the tympanic membranes. Results The values of occlusion effect with the earmold being placed beyond the isthmus of the ear canal 2 mm were significantly different from those with earmolds placed on the isthmus of the ear canal and not reaching the isthmus of the ear canal 2 mm at the frequency of 0.25,0.5 and 1 kHz.There was no significant difference in the occlusion effect between male and female subjects.Conclusion The occlusion effect occurs at the low frequency when the external cartilaginous meatus can vibrate freely.If the earmold reaches the external bony meatus, the occlusion effect will be weakened or eliminated.

关 键 词：中度感音神经性聋 堵耳效应 外耳道软骨部 

分 类 号：R764.43[医药卫生—耳鼻咽喉科]