摘要
目的调查在无听力防护条件下地面炮兵实弹射击后,不同军龄、不同炮位职责人员听力损失情况,为制定炮兵爆炸性耳损伤的防护措施提供科学依据。方法射击前挑选听力正常的炮阵地官兵522人为本次调查对象,于射击前、后询问病史,进行外耳道、鼓膜等专科检查,并填写听力情况调查表。对射击后主诉听力下降者采用丹麦AS 272纯音听力计分别于实弹射击后24 h和1个月进行纯音测听检查。结果实弹射击后听力损失情况:早期高频4或6 kHz任一频率听阈≥35 dBHL者为54.8%;实弹射击后24 h纯音测听,0.5、1和2 kHz 3个频率听阈的均值>25 dBHL者为32.7%;1个月后纯音测听听阈均值>25 dBHL者为3.5%。各军龄段听阈损失发生率差异无显著性(P>0.05),炮位靠近或正对炮膛的瞄准手和炮长与其他人员相比,听力损失发生率较高,差异有显著性(P<0.05)。结论瞄准手、炮长听力损失发生率较高,损伤严重,可造成爆震性聋,需加强听力防护。
Objective To investigate the status of hearing loss in some artillery of different service time,duties without any hearing protection during firing,in order to provide scientific basis for working out protective measures against hearing loss induced by explosion.Methods A total of 522 artillery soldiers of normal hearing were selected as the subjects.The history of disease,external auditory canal,and tympanic membrane were examined by the specialists before and after firing.Questionnaire of hearing state,and pure tone audiometer（Denmark AS 272） were also used to evaluate the hearing loss.Results The hearing threshold of 54.8% subjects was ≥35 dBHL at 4 or 6 kHz frequency at early stage after firing;32.7% of the subjects had average hearing threshold 25 dBHL at 0.5,1,and 2 kHz frequency 24 h after firing,and still 3.5% remained 25 dBHL one month after firing.The incidence of hearing loss was different among subjects with different duties but not with different service time（P0.05）.The aiming layer and gunner had higher incidence of hearing loss than other personnel（P0.05）.Conclusion The incidence of explosion-induccd hearing loss in aiming layer and gunner was rather high,so the hearing protection should be strengthened.
出处
《解放军预防医学杂志》
CAS
2011年第5期325-327,共3页
Journal of Preventive Medicine of Chinese People's Liberation Army
