诊断职业性听力损伤的瞬态诱发耳声发射方法

Transient evoked otoacoustic emissions in diagnosis of occupational noise-induced hearing loss

摘要: 目的探讨瞬态诱发耳声发射(transient evoked otoacoustic emlssions,TEOAE)在职业性听力损伤诊断中的应用价值。方法对长期接触噪声,听阈明显下降的93名工人及93名正常体检人员,进行纯音听阈和TEOAE测试。结果听力损伤组与对照组纯音听阈测试,所有频区听阈值差异均有统计学意义(在语频听阈区P<0.05,高频听阈区,(P<0.01),以高频区听阈下降为主;听力损伤组TEOAE总重复率、幅值和信噪比及各频段重复率、幅值和信噪比均明显低于对照组(P<0.05或P<0.01),250~3 500 Hz和3 500~4 500 Hz频段为最敏感频段。结论 TEOAE检测可用于职业性听力损伤的评估和诊断。

Abstract: Objective To elucidate the applications of transicent evoked otoacoustic emissions(TEOAE)in diagnosis of occupational noise-induced hearing loss.Methods The pure tone thresholds and TEOAE were measured in 93 workers exposed to noise for along term as well as 93 normal persons as control group.Results The pur-etone hear ing thresholds of the workers were sig nificantly different from thoses of control,particularly voice frequency(P<0.05)and high frequency(P<0.01)threshold.Repetit ion rate,amplitude,and SNR of TEOAE in overall and every frequency decreased,especially in 2.5~3.5 and 3.5~4.5 kHz in the workers than those in the control(P<0.05).Conclusion Occupational noise-induced hearing loss can be diagnosed and evaluated by TEOAE.