Nghiên cứu ảnh hưởng của tiếng ồn đến suy giảm thính lực ở nhóm học viên lái xe tăng Binh chủng Tăng - Thiết giáp

Abstract

Objective: To assess the impact of noise on hearing loss in groups of tank drivers. Subject and method: Cohort study conducted on 114 participants study group and 30 control group at the S500 School. Participants of the study were examined for ENT, audiometric examination. Based on the results, the hearing threshold is obtained by the frequency and intensity of hearing loss. Result: Threshold for each frequency change at the end of training, especially at 4000Hz. There were 5/89 cases of hearing loss in the research group. Cases of hearing loss after training were mild, only 1 was moderate. Conclusion: The rate of hearing loss before and after the training was changed (increased from 0% to 5.62%), mild and moderate hearing loss, mainly at 4000Hz. The relative risk index compared with the control group was 1.69 with 95% CI: 0.205 - 13.857.