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Hearing loss, noise-induced.

Authors
Stephenson-MR
Source
Preventing occupational disease and injury, second edition. Levy BS, Wagner GR, Rest KM, Weeks JL, eds. Washington, DC: American Public Health Association, 2005 Jan; :223-231
Link
NIOSHTIC No.
20026220
Abstract
Noise-induced hearing loss is one of the most common occupational illnesses in the United States. It is characterized by a gradual worsening of high-frequency hearing thresholds over time following chronic and sometimes acute exposure to excessive noise levels. Figure 1 illustrates a typical progression over time. The pattern of noise-induced hearing loss is particularly characterized by a "notch" usually centered at 4 kHz, although the notch may be centered closer to 3 kHz or 6 kHz. In later stages, the hearing loss may spread to the middle and even low frequencies. The disease is usually bilateral; however, there may be an asymmetry between the left and right ears. It is possible to see a unilateral noise-induced hearing loss when the exposure conditions favor one side of the head. In most cases, tinnitus will also be present.
Keywords
Hearing-loss; Noise-induced-hearing-loss; Hearing-threshold; Hearing-disorders; Hearing-impairment; Noise-frequencies; Noise-exposure; Noise-levels; Chronic-exposure; Acute-exposure; Exposure-assessment; Occupational-exposure
Publication Date
20050101
Document Type
Book or book chapter
Editors
Levy-BS; Wagner-GR; Rest-KM; Weeks-JL
Funding Type
Construction
Fiscal Year
2005
NTIS Accession No.
NTIS Price
ISBN No.
9780875530437
NIOSH Division
DART
Priority Area
Disease and Injury: Hearing Loss
Source Name
Preventing occupational disease and injury, second edition
State
OH
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