scholarly journals Relationship between hearing loss and noise exposure levels in a large industrial population: A review of an overlooked study

1990 ◽  
Vol 88 (S1) ◽  
pp. S73-S73 ◽  
Author(s):  
J. Alton Burks ◽  
Ernest J. Burgi
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Exposure Levels

scholarly journals O1B.4 Health effects of prenatal occupational noise exposure: a systematic review

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A5.3-A6
Author(s):  
Zara Ann Stokholm ◽  
Inge Brosbøl Iversen ◽  
Henrik Kolstad
Keyword(s):  
Systematic Review ◽  
Hearing Loss ◽  
Gestational Age ◽  
Congenital Malformations ◽  
Noise Exposure ◽  
Occupational Noise ◽  
Noise Levels ◽  
Occupational Noise Exposure ◽  
Increased Risk ◽  
Exposure Levels

Current legislation and threshold limits for occupational noise exposure may not sufficiently account for higher vulnerability of the foetus. We conducted a systematic literature review and identified 20 relevant studies of prenatal noise exposure levels and health. Maternal tissues attenuate industrial noise by about 30 dB. The foetus responds the earliest to noise exposure from the 19th week of gestational age. There is some evidence of an increased risk of hearing loss at prenatal noise levels≥85 dBA (8 hour average) and little evidence at lower levels. Increased risks for preterm birth, small-for-gestational-age and congenital malformations are seen as single study findings at levels≥90 dBA. There is little evidence for how noise exposure may increase the risk of extra-auditive effects in the foetus. Methodological shortcomings and the scarce number of studies limit the conclusions that can be drawn. Still, we recommend pregnant women avoid working at noise levels≥85 dBA.

scholarly journals Sonar-induced temporary hearing loss in dolphins

2009 ◽  
Vol 5 (4) ◽  
pp. 565-567 ◽  
Author(s):  
T. Aran Mooney ◽  
Paul E. Nachtigall ◽  
Stephanie Vlachos
Keyword(s):  
Hearing Loss ◽  
Marine Mammals ◽  
Noise Exposure ◽  
Experimental Studies ◽  
Sound Exposure ◽  
Terrestrial Mammals ◽  
Behavioural Effects ◽  
Ocean Noise ◽  
Exposure Levels ◽  
High Sound

There is increasing concern that human-produced ocean noise is adversely affecting marine mammals, as several recent cetacean mass strandings may have been caused by animals' interactions with naval ‘mid-frequency’ sonar. However, it has yet to be empirically demonstrated how sonar could induce these strandings or cause physiological effects. In controlled experimental studies, we show that mid-frequency sonar can induce temporary hearing loss in a bottlenose dolphin ( Tursiops truncatus ). Mild-behavioural alterations were also associated with the exposures. The auditory effects were induced only by repeated exposures to intense sonar pings with total sound exposure levels of 214 dB re: 1 μPa 2  s. Data support an increasing energy model to predict temporary noise-induced hearing loss and indicate that odontocete noise exposure effects bear trends similar to terrestrial mammals. Thus, sonar can induce physiological and behavioural effects in at least one species of odontocete; however, exposures must be of prolonged, high sound exposures levels to generate these effects.

Noise Exposure Levels for Student Musicians

2007 ◽  
Vol 22 (4) ◽  
pp. 160-165 ◽  
Author(s):  
Vanessa L Miller ◽  
Michael Stewart ◽  
Mark Lehman
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
University Student ◽  
Conservation Practices ◽  
Sporting Events ◽  
Noise Levels ◽  
Hearing Conservation ◽  
Weighted Averages ◽  
Exposure Levels ◽  
Loud Music

Twenty-seven student musicians were surveyed regarding musical practice and playing habits, knowledge of hearing conservation practices, use of hearing protective devices (HPD), and the occurrence of tinnitus after exposure to loud music. In addition, noise exposure levels during practice and sporting events (football and basketball games) at which they played were monitored with a dosimeter simultaneously set to measure noise levels using the OSHA (1983) and NIOSH (1998) measurement criteria. Forty-eight percent of the subjects reported practicing or playing their instrument <10 hours a week. Most musicians (74%) reported having been taught about the effects of noise on hearing and health; however, less than a third used ear protection while playing their instruments, and those who did used it inconsistently. Sixty-three percent of subjects reported experiencing tinnitus after exposure to loud music. Finally, 8-hour time-weighted averages (TWA) and daily noise doses were significantly higher using the NIOSH measurement criteria than the OSHA measurement criteria. Both measurement criteria yielded values that exceeded a 100% daily noise dose for all subjects. Overall, these results indicate that university student directors and musicians appear to be at high risk for permanent noise-induced hearing loss secondary to excessive exposure to loud music. These results support the need for on-going hearing conservation programs to educate student musicians and student directors about the dangers of excessive exposure to loud music.

scholarly journals University music teachers' exposure to noise and hearing loss

2017 ◽  
Vol 1 (1) ◽  
pp. 49-58
Author(s):  
A. Delgado ◽  
F. Carvalho ◽  
R. B. Melo
Keyword(s):  
Hearing Loss ◽  
Extracurricular Activities ◽  
Sound Pressure ◽  
Noise Exposure ◽  
Music Teachers ◽  
Brass Instruments ◽  
School Of Music ◽  
Exposure Levels ◽  
Hearing Damage ◽  
High Sound

Musical instruments and singers' voices can reach high sound pressure values representing a risk to hearing health, which is of particular relevance for music teachers. Therefore, the potential risk of hearing damage among music teachers in a university school of music was assessed. Twenty teachers completed all phases of the study. Sound pressure levels were measured with a sound meter and daily noise exposure levels were computed and compared with legal reference values in force. Three types of hearing exams were administered to all teachers by health technicians. Most teachers (75%) were subjected to daily noise exposure levels below 80 dB(A). Teaching to play brass instruments appears to be the most risky activity. Only three subjects were diagnosed with noise-induced hearing loss, which cannot be exclusively ascribed to occupational activities because they are involved in extracurricular activities. Increased sample size and the use of noise dosimetry would have improved the study conclusions.

scholarly journals Screening for Noise-Induced Hearing Loss among Palm Oil Mill Workers in Peninsular Malaysia: A Comparison across Noise Exposure Levels

Standards ◽  
2022 ◽  
Vol 2 (1) ◽  
pp. 32-42
Author(s):  
Sirri Ammar ◽  
Aziah Daud ◽  
Ahmad Filza Ismail ◽  
Ailin Razali
Keyword(s):  
Hearing Loss ◽  
Palm Oil ◽  
Noise Exposure ◽  
High Risk Group ◽  
Vulnerable Groups ◽  
Exposure Level ◽  
Noise Induced Hearing Loss ◽  
Cross Sectional ◽  
Exposure Levels ◽  
Palm Oil Mill

Background: Palm oil mill workers in Malaysia are exposed to hazardous levels of noise in the workplace, and thus are at risk of developing noise-induced hearing loss (NIHL). In 2019, Malaysia introduced a new noise regulation, which reduced the level of permissible noise exposure. Objectives: This study aims to determine the prevalence of NIHL among palm oil mill workers based on screening data and assess the effects of different noise exposure levels on NIHL. Methods: A cross-sectional study was conducted by analyzing data from noise risk assessment reports of selected mills and screening audiometric data from workers. NIHL was defined as bilateral high-frequency hearing loss. Results: The overall NIHL prevalence was 50.8%. Noise exposure level and age were significant predictors of NIHL among the workers. The risk of developing NIHL was high even for workers who were not categorized in the high-risk group. Conclusions: In view of the findings, a precautionary approach is needed when evaluating the risk of NIHL in the study population. Vulnerable groups of workers must be protected from occupational noise hazards through the implementation of effective hearing conservation programs in the workplace.

scholarly journals Sex differences in noise-induced hearing loss: a cross-sectional study in China

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qixuan Wang ◽  
Xueling Wang ◽  
Lu Yang ◽  
Kun Han ◽  
Zhiwu Huang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hearing Loss ◽  
Sex Differences ◽  
Noise Exposure ◽  
Low Frequency ◽  
Cross Sectional Study ◽  
Noise Induced Hearing Loss ◽  
Sectional Study ◽  
Cross Sectional ◽  
Exposure Levels

Abstract Background Significant sex differences exist in hearing physiology, while few human studies have investigated sex differences in noise-induced hearing loss (NIHL), and the sex bias in previous studies resulted in inadequate female data. The study aims to investigate sex differences in the characteristics of NIHL to provide insight into sex-specific risk factors, prevention strategies and treatment for NIHL. Methods This cross-sectional study included 2280 industrial noise-exposed shipyard workers (1140 males and 1140 females matched for age, job and employment length) in China. Individual noise exposure levels were measured to calculate the cumulative noise exposure (CNE), and an audiometric test was performed by an experienced technician in a soundproof booth. Sex differences in and influencing factors of low-frequency (LFHL) and high-frequency hearing loss (HFHL) were analyzed using logistic regression models stratified by age and CNE. Results At comparable noise exposure levels and ages, the prevalence of HFHL was significantly higher in males (34.4%) than in females (13.8%), and males had a higher prevalence of HFHL (OR = 4.19, 95% CI 3.18 to 5.52) after adjusting for age, CNE, and other covariates. Sex differences were constant and highly remarkable among subjects aged 30 to 40 years and those with a CNE of 80 to 95 dB(A). Alcohol consumption might be a risk factor for HFHL in females (OR = 3.12, 95% CI 1.10 to 8.89). Conclusions This study indicates significant sex differences in NIHL. Males are at higher risk of HFHL than females despite equivalent noise exposure and age. The risk factors for NIHL might be different in males and females.

scholarly journals Do ambient noise exposure levels predict hearing loss in a modern industrial cohort?

2006 ◽  
Vol 64 (1) ◽  
pp. 53-59 ◽  
Author(s):  
P M Rabinowitz ◽  
D Galusha ◽  
C Dixon-Ernst ◽  
M D Slade ◽  
M R Cullen
Keyword(s):  
Hearing Loss ◽  
Ambient Noise ◽  
Noise Exposure ◽  
Exposure Levels

scholarly journals Predicting standard threshold shifts for occupational hearing loss among miners at a large-scale platinum mine in South Africa

2021 ◽  
Vol 121 (8) ◽  
pp. 1-8
Author(s):  
L. Ntlhakana ◽  
G. Nelson ◽  
K. Khoza-Shangase ◽  
I. Maposa
Keyword(s):  
Hearing Loss ◽  
South African ◽  
Large Scale ◽  
Noise Exposure ◽  
Demographic Data ◽  
Dust Exposure ◽  
Hearing Conservation ◽  
Exposure Data ◽  
Exposure Levels ◽  
Left And Right

Occupational noise-induced hearing loss (ONIHL) is associated with various risk factors in South African mines. We investigated the association between standard threshold shifts (STSs) and exposure to noise and platinum mine dust (PMD), using demographic data, five years of annual audiometry screening results, and noise and dust exposure data. Miners' age, sex, percentage hearing loss (PLH), and dust and noise exposure data were gathered, and a linear mixed effects regression model used to predict STS. Average occupational exposure levels to noise and dust were calculated from recorded measurements. A total of 12 692 records were analysed. Most miners were male (89.6%) and more than 50% were younger than 41 years. More than 70% were exposed to > 85 dBA noise and 58% were exposed to 1.5-2.99 mg/m3 PMD. Changes in hearing levels ranged from 8.3 dBHL at baseline (2014/2015) to 10 dBHL in 2016 (STS), with no changes thereafter. The model showed that the estimated effect on STS for males was 27% and 21% higher than for females, for the left and right ear, respectively The estimated effect of age, PLH, noise exposure and years of exposure on STS was < 10% for each variable. There was no statistically significant association between PMD and STS. The combined effects of age, sex, years of exposure to noise, and noise exposure levels, and strength of associations can be used to predict STS for this group of miners. Our findings may be used to measure the efficacy of the mine's hearing conservation programme.

Risk of Hearing Loss in Orchestra Musicians: Review of the Literature

2006 ◽  
Vol 21 (4) ◽  
pp. 164-168
Author(s):  
Alberto Behar ◽  
Willy Wong ◽  
Hans Kunov
Keyword(s):  
Hearing Loss ◽  
Measurement Technique ◽  
Noise Exposure ◽  
Review Of The Literature ◽  
Noise Levels ◽  
Exposure Levels ◽  
Orchestral Musicians

We reviewed 13 papers on noise exposure of orchestral musicians and found that the question of whether orchestra musicians are overexposed does not appear to have a clear answer. To find relevant papers, we researched three databases (Scholar, Scopos, and Medline), which yielded 6, 9, and 17 papers, respectively (including duplicates). A number of papers in the reviewed literature lacked basic descriptions concerning such issues as measurement technique and instrumentation. Rough data and calculation details were often not provided so that the conclusions could not be checked easily. The most serious problem was the estimated time that musicians performed in the orchestra. This information is crucial for the calculation of the normalized noise exposure levels (LEX), and is especially important as orchestra players do not perform year-round nor are they exposed to the same noise levels while performing different pieces of music.

scholarly journals A Quantitative General Population Job Exposure Matrix for Occupational Noise Exposure

2020 ◽  
Vol 64 (6) ◽  
pp. 604-613 ◽  
Author(s):  
Zara Ann Stokholm ◽  
Mogens Erlandsen ◽  
Vivi Schlünssen ◽  
Ioannis Basinas ◽  
Jens Peter Bonde ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Fixed Effects ◽  
Large Scale ◽  
Noise Exposure ◽  
Working Environment ◽  
Occupational Noise ◽  
Noise Levels ◽  
Job Exposure Matrix ◽  
Occupational Noise Exposure ◽  
Exposure Levels

Abstract Occupational noise exposure is a known risk factor for hearing loss and also adverse cardiovascular effects have been suggested. A job exposure matrix (JEM) would enable studies of noise and health on a large scale. The objective of this study was to create a quantitative JEM for occupational noise exposure assessment of the general working population. Between 2001–2003 and 2009–2010, we recruited workers from companies within the 10 industries with the highest reporting of noise-induced hearing loss according to the Danish Working Environment Authority and in addition workers of financial services and children day care to optimize the range in exposure levels. We obtained 1343 personal occupational noise dosimeter measurements among 1140 workers representing 100 different jobs according to the Danish version of the International Standard Classification of Occupations 1988 (DISCO 88). Four experts used 35 of these jobs as benchmarks and rated noise levels for the remaining 337 jobs within DISCO 88. To estimate noise levels for all 372 jobs, we included expert ratings together with sex, age, occupational class, and calendar year as fixed effects, while job and worker were included as random effects in a linear mixed regression model. The fixed effects explained 40% of the total variance: 72% of the between-jobs variance, −6% of the between-workers variance and 4% of the within-worker variance. Modelled noise levels showed a monotonic increase with increasing expert score and a 20 dB difference between the highest and lowest exposed jobs. Based on the JEM estimates, metal wheel-grinders were among the highest and finance and sales professionals among the lowest exposed. This JEM of occupational noise exposure can be used to prioritize preventive efforts of occupational noise exposure and to provide quantitative estimates of contemporary exposure levels in epidemiological studies of health effects potentially associated with noise exposure.

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