[Evaluation of noise exposure and risk of hearing impairment in employees using communication headsets or headphones].
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AffiliationNofer Institute of Occupational Medicine
MetadataShow full item record
Other TitlesOcena narażenia na hałas i ryzyko uszkodzenia słuchu u pracowników używających słuchawkowych zestawów komunikacyjnych lub słuchawek
AbstractThe aim of the study was to assess the noise exposure and risk of noise-induced hearing loss (NIHL) among users of communication headsets (CHs) or headphones. Noise measurements and questionnaire surveys were carried out in 74 workers (aged: 31.8±7.3 years), including military aviation personnel (N = 12), transcribers (N = 18) and call center operators (N = 44). Sound pressure levels (SPLs) emitted by CHs (or headphones) were determined using the microphone in the real ear (MIRE) technique and artificial ear techniques according to PN-EN ISO 11904-1:2008 and CSA Z107.56-13, respectively. The risk of NIHL was evaluated in accordance with PN-ISO 1999:2000. The diffused-field-related A-weighted equivalent-continuous SPLs measured under CHs (or headphones) using the MIRE and artificial ear techniques reached values of 67-86 dB (10-90th percentile) and 68-89 dB (10-90th percentile), respectively. The study subjects used these devices 1.5-8 h (10-90th percentile) per day. Exposure to such noise levels for 40 years of employment causes the risk of hearing impairment (mean hearing threshold level for 2, 3 and 4 kHz > 25 dB) up to 10-12% (MIRE technique) or 19-22% (artificial ear technique). Individual daily noise exposure levels in study group varied 71-85 dB (10-90th percentile). A number of workers complained of problems with understanding speech in noisy environment (28.4%) and hearing whisper (16.2%) and experienced post-work temporary hearing symptoms (16.2-25.7%) as well. The users of CHs and headphones should be included in the hearing conservation program. Further studies are also needed among employees of other industries. Med Pr. 2019;70(1):27-52.
CitationMed Pr. 2019;70(1):27-52.
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