The Progression of Hearing Loss from Industrial Noise Exposures

Schneider, E J; Mutchler, John E.; Hoyle, H. R.; Ode, E. H.; Holder, Benjamin B.

doi:10.1080/0002889708506259

Cited by 11 publications

(3 citation statements)

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“…This agrees with Taylor et al9 who showed that the first and most severely affected frequency is 4 kHz, but 6 kHz is affected nearly as much at early stages. Schneider et al10 and Al-Nasser et al11 discovered that the maximum impairment of hearing was at 6 kHz. On the other hand, the classical 4 kHz notch was described by many other investigators such as Bilger and Schilling 12,13…”

Section: Discussionmentioning

confidence: 99%

Study of Noise, Hearing Impairment and Hypertension in Egypt

Saad

Sayed

Hammam

1994

Annals of Saudi Medicine

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This study included 295 workers of Assiut Generation Station (Upper Egypt). Two hundred and twenty-one of the workers were exposed to different levels of noise (80 to 107 dBA) and the remaining 74 were used as a control group. There were no significant differences in risk factors viz age, duration of work, body mass index, weight, height, smoking, and previous work as determined by a questionnaire. The relationship between occupational exposure to noise, the degree of hearing loss and hypertension was determined. The results showed that there were statistically significant differences between the average hearing threshold levels of the two groups (P<0.01) which were more in those workers exposed to noise than in the control group. The mean systolic and diastolic blood pressures were also statistically significantly different in the two groups (P<0.001) and they were positively correlated (P<0.001) to the percentage of impairment of the whole body at 4 and 6 kHz, and hearing disability at 0.5, 1, 2, and 3 kHz. Stepwise multiple regression analysis revealed that age, noise level and body weight could each be used as a predictor of hypertension. A predictive formula was derived between the amount of hearing loss and blood pressure in the subjects exposed to occupational noise. Ann Saudi Med 1994;14 (4) Noise can be a health hazard in two main ways: it can damage hearing and it can affect various body systems. The auditory effects of noise have been documented and evidence has been accumulated regarding the cardiovascular effects of noise.1 Noise was recognized by the World Health Organization (WHO) in 1983 2 as one of a number of possible exogenous factors in the pathogenesis of essential hypertension. Von Eiff et al.3 found a significant increase in the incidence of hypertension among people living and working in proximity to aircraft and automobile traffic.The correlation between the degree of hearing impairment and elevation of systolic and diastolic blood pressure has not yet been established. Early screening surveys 4 on middle age population could not find such correlation, while a recent study 5 found a statistically significant positive correlation between the two variables among retired metal workers who had been exposed to noise -84 dBA-for 30 years or longer.The aim of this work was to investigate the relationship between elevation of hearing threshold and blood pressure (systolic and diastolic) among subjects exposed to various noise levels; and at the same time considering the effect of other variables such as duration of exposure and age on such relationship. Material and MethodsThis study was conducted in Assiut Electricity Generation Station (EGS) in Assiut, Egypt. A) Subjects: 221 employees exposed to noise in the station were the study subjects. None of the employees was excluded unless he had severe deafness resulting from a known cause other than noise or suffered from hypertension (pressure more than or equal to 160/95 mm/Hg) or there was a history of antihypertensive medication prior to work i...

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Section: Discussionmentioning

confidence: 99%

Study of Noise, Hearing Impairment and Hypertension in Egypt

Saad

Sayed

Hammam

1994

Annals of Saudi Medicine

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“…The authors conclude that although an objective definition of the noise notch would be helpful, audiometric shape does not appear to be a clear indication of the etiological pathway. 103 Furthermore, there is increasing evidence that the notch may initially present at 6000 Hz rather than 4000 Hz as traditionally thought, 104,105 although some have attributed this to an inaccurate reference value for audiometric zero. 106 If a notch truly is present at 6000 Hz, reviewers will not be able to identify it unless 8000 Hz is included as a test frequency.…”

Section: Audiometric Monitoringmentioning

confidence: 99%

National Research Agenda for the Prevention of Occupational Hearing Loss—Part 2

Themann

Suter²,

Stephenson

2013

Semin Hear

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The National Institute for Occupational Safety and Health (NIOSH) is tasked with generating new knowledge in the field of occupational safety and health and transferring that knowledge into practice for the betterment of workers. In 1996, NIOSH established the National Occupational Research Agenda (NORA), which identified occupational hearing loss as a priority research area. The NORA Hearing Loss Team, composed of representatives from industry, academia, labor, professional organizations, and other governmental agencies, has developed a national research agenda for the prevention of occupational hearing loss. This is Part 2 of that document, outlining research needed to address the problem through effective prevention programs.

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“…They took their data from a high-noise-level industrial environment and presented their results in terms of frequency of noise and exposure time. Schneider et al (1970) then demonstrated how to obtain hearing loss trends resulting from various industrial noise exposures. All of these studies laid the foundation for predicting hearing loss due to occupational noise and resulted in ISO 1999, which provides a fundamental procedure to estimate hearing threshold level considering noise exposure and other factors, and ISO 7029, which provides statistical distributions of hearing thresholds as a function of age (International Organization for Standardization, 1990, 2000).…”

Section: Introductionmentioning

confidence: 99%

Using software to predict occupational hearing loss in the mining industry

Azman

Thompson

2016

Transactions

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Powerful mining systems typically generate high-level noise that can damage the hearing ability of miners. Engineering noise controls are the most desirable and effective control for overexposure to noise. However, the effects of these noise controls on the actual hearing status of workers are not easily measured. A tool that can provide guidance in assigning workers to jobs based on the noise levels to which they will be exposed is highly desirable. Therefore, the Pittsburgh Mining Research Division (PMRD) of the U.S. National Institute for Occupational Safety and Health (NIOSH) developed a tool to estimate in a systematic way the hearing loss due to occupational noise exposure and to evaluate the effectiveness of developed engineering controls. This computer program is based on the ISO 1999 standard and can be used to estimate the loss of hearing ability caused by occupational noise exposures. In this paper, the functionalities of this software are discussed and several case studies related to mining machinery are presented to demonstrate the functionalities of this software.

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The Progression of Hearing Loss from Industrial Noise Exposures

Cited by 11 publications

References 0 publications

Study of Noise, Hearing Impairment and Hypertension in Egypt

Study of Noise, Hearing Impairment and Hypertension in Egypt

National Research Agenda for the Prevention of Occupational Hearing Loss—Part 2

Using software to predict occupational hearing loss in the mining industry

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