摘要
目的进一步探索民航机场工作环境噪声对机场工作人员听觉功能的影响。方法对国内某民航机场的34名工作人员进行了畸变产物耳声发射(distortion product otoacoustic emissions,DPOAE)检查,并比较分析了外场组与室内组、左耳与右耳以及各工龄组间DPOAE信噪比(signal noise ratio,SNR)的幅值和检出率的差异。结果室内组和外场组各个频率SNR的检出率均小于100%,室内组SNR的幅值和检出率在多个频率点显著高于外场组(P<0.05),以3000 Hz和4000 Hz差异尤为显著(P<0.01);工龄15～29年组和30年以上组SNR的幅值和检出率在多个频率点显著高于0～14年组(P<0.05),而工龄15～29年组和30年以上组间未见显著性差异;左右耳之间SNR的幅值和检出率未见显著性差异。结论机场噪声对机场工作人员的听觉功能造成了损害,由于外场工作人员噪声暴露强度高于室内工作人员,所以其听觉功能损害程度更加严重;接触噪声时间越长损害越严重。
Objective To further explore the effects of aviation noise exposure in civil airport workplace on the auditory function. Methods Thirty-four staff （68 ears） of a civil aviation airport was tested with distortion product otoacoustic emissions （DPOAE）. The differences of amplitude and detectable rates of signal noise ratio （SNR） between working inside and outside groups, left and fight ear groups, and groups of different working life were compared respectively. Results The detectable rates of SNR in working inside and working out- side groups at each frequency were less than 100%. The amplitude and the detectable rates of SNR in working inside group were higher than those in working outside group at multiple frequency points （ P 〈 0.05 ）. The differences of 3000 Hz and 4000 Hz were particularly significant（ P 〈0.01 ）. The amplitude and the detectable rates of SNR of 15 - 29 years and more than 30 years working life groups were higher than those of 0 - 14 years working life group at multiple frequency points（ P 〈 0.05 ）. There was no significant difference in amplitude and detectable rates of SNR between 15 -29 years working life group and more than 30 years working life group. The amplitude and the detectable rates of SNR between left ears and fight ears were of no significant difference. Conclusion Airport noise can cause damage to auditory function of airport staff. Because noise exposure intensity of working outside is higher than that of working inside, the damage to auditory function in working outside is more severe. If noise exposure is longer, the damage would be more serious.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2013年第1期29-33,共5页
Space Medicine & Medical Engineering
关键词
民航
机场
噪声
畸变产物
耳声发射
civil aviation
airport
noise
distortion products
otoacoustic emissions
