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Audiological findings in workers exposed to styrene alone or in concert with noise.

Authors
Johnson-AC; Morata-TC; Lindblad-AC; Nylen-PR; Svensson-EB; Krieg-E; Aleksandar-A; Prasher-D
Source
Noise Health 2006 Jan-Mar; 8(30):45-57
NIOSHTIC No.
20032014
Abstract
Audiological testing, interviews and exposure measurements were used to collect data on the health effects of styrene exposures in 313 workers from fiberglass and metal-product manufacturing plants and a mail terminal. The audiological test battery included pure-tone audiometry, distortion product otoacoustic emissions (DPOAE), psychoacoustic modulation transfer function, interrupted speech, speech recognition in noise and cortical response audiometry (CRA). Workers exposed to noise and styrene had significantly poorer pure-tone thresholds in the high-frequency range (3 to 8 kHz) than the controls, noise-exposed workers and those listed in a Swedish age-specific database. Even though abnormalities were noted on DPOAE and CRA testing, the interrupted speech and speech recognition in noise tests were the more sensitive tests for styrene effects. Further research is needed on the underlying mechanisms to understand the effects of styrene and on audiological test batteries to detect changes in populations exposed to solvents.
Keywords
Solvent-vapors; Solvents; Hearing-acuity; Hearing-impairment; Hearing-level; Hearing-loss; Hearing-tests; Hearing-threshold; Noise-analysis; Noise-exposure; Noise-frequencies; Noise-induced-hearing-loss; Noise-sources; Noise-transmission; Audiofrequency; Audiometers; Audiometry; Auditory-discrimination; Auditory-nerve; Chemical-composition; Chemical-indicators; Chemical-hypersensitivity; Chemical-properties
Contact
National Institute for Occupational Safety and Health, Robert A. Taft Laboratories, 4676 Columbia Parkway, Mail Stop C-24, Cincinnati, OH 45226
CODEN
NHOEA4
CAS No.
100-42-5
Publication Date
20060301
Document Type
Journal Article
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Issue of Publication
30
ISSN
1463-1741
NIOSH Division
DART
Source Name
Noise & Health
State
OH
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