Impulse noise and hand-arm vibration in relation to sensory neural hearing loss.

Starck, Jukka; Pekkarinen, Jussi; Pyykkö, Ilmari

doi:10.5271/sjweh.1922

Cited by 28 publications

(53 citation statements)

References 30 publications

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“…In addition, percussion vibratory tools produce impulse noise as well. Impulse noise has been considered to be more likely to cause noise-induced hearing loss than steady state noise is (13). Thus, when the effect of vibration on workers is under consideration, it is important to emphasize the impulsiveness of hand-transmitted vibratory tools (14).…”

Section: Discussionmentioning

confidence: 99%

Effect of impulse vibration on red blood cells in vitro

Ando¹,

Nieminen²,

Toppila³

et al. 2005

Scand J Work Environ Health

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Section: Discussionmentioning

confidence: 99%

Effect of impulse vibration on red blood cells in vitro

Ando¹,

Nieminen²,

Toppila³

et al. 2005

Scand J Work Environ Health

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“…The microphone signal was fed to a signal analyser by a 0.3-mm diameter cable to minimize leakage between skin and cushion ring of the earmuff. In different working sites 10-min samples were recorded for the analyses of Aweighted equivalent sound level and the impulsiveness of the noise (12). For the calculations of paper mill workers exposure to noise a total of 21 measurements at different working sites were taken.…”

Section: Exposure To Noisementioning

confidence: 99%

Individual susceptibility to noise-induced hearing loss

Pyykkö

Toppila

Zou

et al. 2007

Audiological Medicine

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The new EU directive (10/2003/EU) sets new limits for allowable noise levels and sets new requirements to accommodate the individual susceptibility factors, but does not define these factors. We aim to evaluate the effects of environmental and biological factors on the damage to hearing by noise. The history of work exposure, use of hearing protective devices (HPD), audiometric data and information on environmental and biological factors were collected from well over 1000 workers. The group consisted of 406 paper mill workers, 400 miners, 250 metal factory workers, 176 shipyard workers and 124 forestry workers. For comparison we evaluated 685 noise-exposed subjects visiting a hearing aid clinic for fitting of a hearing aid. They were exposed in their work to noise levels of 80 Á115dB(A). The environmental and biological factors encompassed smoking habits, the use of analgesics, serum cholesterol, systolic or diastolic blood pressure as well as noise exposure. There were a number of confounders which were significant factors in the hearing losses found in the noise-exposed workers. Sensitivity to sunburn, the presence of Raynaud's disease, a history of head injury and the use of analgesics correlated significantly with the extent of noise induced hearing loss (NIHL). The role of serum cholesterol levels as a risk factor for NIHL depended on the age of the subject, with the levels of middle-aged subjects having the greatest effect on NIHL. Hypertension or use of anti-hypertensive medication and use of analgesics correlated with hearing loss and their effect was additive. The correlation of tobacco smoking was also confounded by age. In analyses where the subjects were matched in pairs by age, exposure, blood pressure and serum cholesterol level, the elderly subjects were more susceptible to NIHL than younger subjects. In conclusion, among several susceptibility factors smoking and cholesterol are independently but causally related to NIHL and may cause the subject to be more susceptible for noise damage. Ageing further confounds some of these factors. The current ISO noise standard (1999 Á1990) has methodological deficiencies in not encompassing these susceptibility factors.

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“…In many occupations the impulses are so brief that they contribute only slightly to the energy content of noise. In our earlier studies we found that shipyard workers had 10 dB greater hearing loss than was predicted by the ISO 1999 model, whereas for forest workers the observed and predicted hearing threshold levels were consistent Starck et al, 1988a). Target-shooting and hunting also augment the risk for hearing loss (Ylikoski et al, 1994).…”

Section: Impulse Noise and Hearingmentioning

confidence: 88%

“…This is due to the high frequency content of the impulses, which are attenuated effectively by earmuffs. Even though earmuffs reduce the impulsiveness of noise, the workers in the metal industry are still exposed to higher impulse noise than the workers in paper mills and in forestry (Starck et al, 1988a). In 10% of the workers examined, the attenuation of HPDs was less than 5 dB (Pekkarinen, 1987).…”

Section: Evaluation Of Hearing Protectorsmentioning

confidence: 98%

Database for a hearing conservation program

Pyykkö

Toppila

Starck

et al. 2000

Scandinavian Audiology

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We have developed a database and an analysis program (NoiseScan) for noise-induced hearing loss (NIHL). The exposure data are based on the evaluation of the noise immission level, which includes duration, frequency content, and the use of, and the attenuation performance of, hearing protectors. The input data can handle an unlimited number of exposure periods. If the noise exposure level is not known, the program lists noise levels of comparable work places, and thus provides an estimate of exposure. Confounding medical factors that may contribute to NIHL, such as elevated serum cholesterol level, hypertension, and extensive use of pain killers, are collected. Combined exposure to agents that clearly contribute to NIHL, such as hand-arm vibration, tobacco smoking, use of aminoglycosides and exposure to solvents are also assessed. An unlimited number of audiograms can be stored, and all the data can be completed and edited following collection. The program gives the predicted hearing loss according to the ISO 1999 model based on total exposure. At present, our NoiseScan program (under continuous development in an EU research program) is suitable for the data collection of various risk factors. It can be used to determine whether the hearing loss is occupational in origin and to estimate the efficiency of hearing conservation measures. NoiseScan also predicts the development of hearing loss in individuals in 5-year periods. The goal is to improve and validate the rules by which single and combined risk factors contribute to HIHL, thus leading to more precise prediction of individual hearing loss, and for the evaluation of success of the hearing conservation programs.

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Impulse noise and hand-arm vibration in relation to sensory neural hearing loss.

Cited by 28 publications

References 30 publications

Effect of impulse vibration on red blood cells in vitro

Effect of impulse vibration on red blood cells in vitro

Individual susceptibility to noise-induced hearing loss

Database for a hearing conservation program

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