畸变产物耳声发射对噪声性聋早期发现的应用

Application of DPOAE on early discovering of noise induced hearing loss

目的 从听力学角度评价畸变产物耳声发射检测对噪声性听损伤早期发现的临床价值。方法 利用声级计测定某食品包装材料有限公司生产车间,同时利用纯音测听、声导抗、耳声发射、对生产车间接触噪声的43名工人进行听力检测并同时进行外耳检查和噪声接触史调查。结果 生产车间九个机器点的噪声水平平均93.7dB(A),超过国家规定标准,受检的43名工人声导抗检测全部正常,23人听力检测异常,其中7人纯音测听呈噪声性聋早期、中期听力损伤改变,16人纯音测听正常而耳声发射不合格。结论 畸变产物耳声发射检测对接触噪声的人群是一种有一定价值的监测和早期发现噪声性聋的检查方法。

Objective To study the clinical efficacy of screening for noise induced hearing loss(NHIL)with distortion product otoacoustic emission(DPQAE) .Methods To mensure the noisy level of nine food package machines with acoustic metrology and the hearing levels were inspected 43 workers with pure tone and acoustic immitance and DPOAE, in the same time examining the outer ears and investigating time of noise endured,Result The average noise level of nine machines was 93.7dB(A),exceeding national regulation.Forty-three workers were normal with acoustic immitance and twenty-three workers were abnormal in hearing,seven of them were early and middle stage of noise induced hearing loss. Sixteen workers were normal with pure tone audiometry but abnormal with DPOAE.Conclusion DPOAE is a valuable method to detecte people enduring noise and discover NHIL earlier.