Combined Effects of Noise and Mixed Solvents Exposure on the Hearing Function among Workers in the Aviation Industry

  • KIM Jeongyoun
    Department of Preventive Medicine, College of Medicine, Ewha Womans University
  • PARK Hyesook
    Department of Preventive Medicine, College of Medicine, Ewha Womans University
  • JUNG Taejin
    Department of Occupational Medicine, Inha University Hospital Department of Environmental Health, School of Public Health, Seoul National University
  • HA Eunhee
    Department of Preventive Medicine, College of Medicine, Ewha Womans University
  • YANG Seungleem
    Center for Occupational Health and Safety, Korean Airline
  • PAIK Namwon
    Department of Environmental Health, School of Public Health, Seoul National University

書誌事項

公開日
2005
資源種別
journal article
DOI
  • 10.2486/indhealth.43.567
公開者
独立行政法人 労働者健康安全機構 労働安全衛生総合研究所

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説明

This study aims to evaluate the effect of occupational exposure to noise and organic solvents on hearing loss in the aviation industry. The study population comprised 542 male workers, who worked in avionics jobs in Kimhae, Korea, who kept records of work environment evaluations and medical examinations. The Cumulative Exposure Index (CEI) was constructed to assess the lifetime cumulative exposure of the workers, and pure tone audiometry (PTA) data of the workers from their biannual medical surveillance was used to assess hearing loss. The prevalence of hearing loss found in the group exposed to noise and mixed solvents simultaneously (54.9%) was higher than those in the other groups (6.0% in the unexposed, 17.1% in the noise-only, and 27.8% in the exposed to only a solvents mixture). The relative risks, adjusted for age, were estimated to be 4.3 (95% CI 1.7-10.8) for the noise-only group, 8.1 (95% CI 2.0-32.5) for the noise and solvents group, and 2.6 (95% CI 0.6-10.3) for the solvents-mixture group. These suggest that chronic exposure to mixed solvents had a toxic effect on the auditory system. This raises the issue of whether hearing conservation regulations should be applied to all workers exposed to solvents.

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