(DOWNLOAD) "Noise-Induced Hearing Loss in Construction Workers Being Assessed for Hand-Arm Vibration Syndrome (Quantitative Research) (Report)" by Canadian Journal of Public Health # Book PDF Kindle ePub Free
eBook details
- Title: Noise-Induced Hearing Loss in Construction Workers Being Assessed for Hand-Arm Vibration Syndrome (Quantitative Research) (Report)
- Author : Canadian Journal of Public Health
- Release Date : January 01, 2010
- Genre: Law,Books,Professional & Technical,
- Pages : * pages
- Size : 290 KB
Description
Many workers are exposed to high noise levels and may develop noise-induced hearing loss (NIHL). (1,2) Tak et al. (3) estimated that, after the manufacturing sector, the construction sector had the greatest number of workers occupationally exposed to noise in the US. Construction workers in Canada are similarly exposed to high noise levels (4) and at risk of NIHL. (5,6) In construction work, the use of hand-held vibrating tools is an important source of noise exposure. (4) Exposure to hand-arm vibration may result in Hand-Arm Vibration Syndrome (HAVS) which is comprised of vascular, neurological and musculoskeletal components. (7,8) The main vascular component consists of cold-induced blanching of the fingers, a form of secondary Raynaud's phenomenon which is often referred to as Vibration White Finger (VWF). (9) Several studies have found that in workers exposed to both noise and hand-arm vibration, those workers with VWF have greater hearing loss than workers without VWF, after controlling for noise exposure. (10-15) However a well-designed study by Pyykko et al. (16 found that the permanent hearing loss in workers exposed to noise and vibration did not exceed the permanent hearing loss from exposure to noise only. Therefore it appears that VWF might be a marker for increased individual susceptibility to noise-induced hearing loss without the vibration conferring increased risk of hearing loss from noise exposure. (17,18)
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