Auditory Effects of Exposure to Noise and Solvents: A Comparative Study

Lobato, Diolén Conceição Barros; Lacerda, Adriana Bender Moreira de; Coifman, Herton

doi:10.1055/s-0033-1361083

Cited by 4 publications

(4 citation statements)

References 16 publications

(42 reference statements)

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“…Additionally, the difference in the definition of hearing loss is another contributing factor. The definition of hearing loss included the following aspects: thresholds above 25 dB HL at frequencies of 3, 4, and/or 6 kHz [33,35,39,40,42]; thresholds above 25 dB HL at 0.5, 1, 2, 4 and/or 8 kHz [34,37,41,44]; the average hearing threshold at 0.5, 1, and 2 kHz above 25 dB; or the average hearing threshold at 3, 4, 6, and 8 kHz above 25 dB HL [36,38,43]. However, the effects of the different definitions of hearing loss on the comparison results could be weakened for the reason that the reference groups use the same definition of hearing loss in each study.…”

Section: Discussionmentioning

confidence: 99%

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Occupational Hearing Loss Associated with the Combined Exposure of Solvents and Noise: A Systematic Review and Meta-Analysis

Ren,

Xie,

et al. 2023

Safety

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To analyze the predominant frequencies of hearing threshold shift and the prevalence of hearing loss related to the co-exposure to noise and solvents. A systematic review and meta-analysis were performed by retrieving published articles from Web of Science, PubMed, Scopus, Embase, and ProQuest until July 2023. Data were extracted in line with the Cochrane Collaboration Handbook, and the Newcastle-Ottawa Scale and Agency for Healthcare Research and Quality were used to assess the studies’ quality. The meta-analysis was used to estimate the odds ratios (ORs) with 95% confidence interval (CI). I2 and Q statistics were used to prove the heterogeneity. A total of 22 selected studies (9948 workers), six cohort studies and 16 cross-sectional studies were included. The results revealed that 43.7%, 41.3%, and 53.6% of the participants presented with hearing loss due to noise exposure, solvent exposure, and combined exposure to noise and solvent, respectively. The workers exposed to both noise and solvents had a higher risk of hearing loss than those exposed to noise (overall weighted odds ratio [OR]: 1.76) or solvents (overall-weighted OR: 2.02) alone. The poorer hearing threshold in the combined noise and solvents exposure group was mainly at high frequencies (3, 4, 6, and 8 kHz), with a peak of 29.47 dB HL at 6 kHz. The noise-exposed group’s peak hearing threshold was 28.87 dB HL at 4 kHz. The peak hearing threshold of the solvent-exposed group was 28.65 dB HL at 6 kHz. The workers exposed to noise and solvent simultaneously had a higher prevalence of hearing loss than those exposed to solvents. Co-exposure to noise and solvents increases the odds of hearing loss. The dominant hearing threshold changes occurred at 3, 4, 6, and 8 kHz, and the peak value appeared at 6 kHz in workers co-exposed to noise and solvents.

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Section: Discussionmentioning

confidence: 99%

“…Figure 2. Prevalence of hearing loss among the four exposure groups in each article[11,18,23,27,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51].…”

mentioning

confidence: 99%

Occupational Hearing Loss Associated with the Combined Exposure of Solvents and Noise: A Systematic Review and Meta-Analysis

Ren,

Xie,

et al. 2023

Safety

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“…biotransformation (the process by which the ‘body metabolism transforms solvents into water soluble compounds’). (Lobato et al, 2014 ; Loukzadeh et al, 2014 ; Prasher et al, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

“… Outcomes This study suggests the necessity for reviewing the preventive measurements adopted by the company studied for eliminating the occurrence of hearing losses and standard threshold shift. Auditory effects of exposure to noise and solvents: A comparative study Author Lobato et al ( 2014 ) Methods A transversal retrospective cohort study was performed Participants One hundred and ninety eight workers Four groups: noise group, exposed only to noise; the noise and solvents group, exposed to noise and solvents; the noise control group and noise and solvents control group; no exposure. Results The noise group and noise and solvent group had worse thresholds than their respective control groups.…”

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confidence: 99%

The effects of combined exposure of solvents and noise on auditory function – A systematic review and meta-analysis

Nakhooda

Sartorius

Govender

2019

South African Journal of Communication Disorders

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Background Chemical substances can negatively affect the auditory system. Chemical substances alone or combined with high-level noise have recently become a major concern as a cause of occupational hearing loss. Objective To assess the combined effect of solvents and noise versus solvents only, or noise only, on the auditory function of workers. Method Published articles which included noise and/or solvent exposure or combined effects of solvents and noise, studies conducted on human beings only and the use of audiological tests on participants. Results Thirteen papers were eligible for inclusion. The participants’ ages ranged from 18 to 68 years. Results revealed that 24.5% presented with hearing loss as a result of noise exposure only; 18% presented with hearing loss owing to solvent exposure only; and a total of 43.3% presented with hearing loss owing to combined noise and solvent exposure. Furthermore, the prevalence of hearing loss in the noise and solvent group was significantly ( p < 0.001) higher than the other groups in 10 out of the 13 studies analysed, with a pooled odds ratio (OR) of 2.754. Of the 178 participants (total of all participants exposed to solvents), a total of 32 participants presented with auditory pathology as a result of exposure to solvents only. There was a significantly higher pooled odds of hearing loss in noise and solvent-exposed group compared to solvent-only group (pooled OR = 2.15, 95% CI: 1.24–3.72, p = 0.006). Conclusion The findings revealed significantly higher odds of acquiring hearing loss when workers were exposed to a combination of solvents and noise as opposed to solvents only, motivating for its inclusion into hearing conservation programmes.

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Hearing Impairment in French Merchant Seafarers: Retrospective Study on Data from 8308 Audiometric Tests

Lucas

Sauvage²,

Forestier

et al. 2022

IJERPH

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Background: A high level of occupational noise exposure has been noted in the fishing sector. Yet, less is known regarding other navigation groups, such as merchant seafarers, since a French study in the 1980s. This study assesses hearing impairment (HI) in a French merchant seafarers’ population. Methods: We collected data of all audiograms performed in 2018 and 2019 for French merchant seafarers. For each seafarer, hearing ability was measured in both ears using pure-tone audiometry at the following frequencies: 0.5, 1, 2, 3, 4, 6, and 8 kHz. Hearing threshold levels (HTLs), or the intensity of sound below which no sound is detected, were measured in decibels Sound Pressure Level (dB SPL) at each frequency and recorded in 5 dB increments. For HI, we used the validated definition of the American Speech–Language–Hearing Association (ASHA). Results: We were able to include statistical analysis results of 8308 audiograms. In a multiple logistic regression adjusted for age, experience, and class of navigation, we found that experience of more than 14 years Odds Ratio OR 1.28 (CI 95% 1.07–1.53), age 31–40 OR 2.2 (CI 95% 1.4–3.4), and >40 years OR 14, 3 (IC 95% 9.7–21) and marine engineers OR 1.26 (IC 95% 1.01–1.57) were still risk factors for HI. Conclusion: In 2018, Marine engineers were still the workers’ group with a higher risk of HI in merchant seafarers but, notch at 4 Hz, specific of noise-induced hearing loss, has improved. They have an HI close to the definition of socioacousis and mean deficit differences with deck and services’ merchant seafarers improved. Our results could be interpreted as a limitation of occupational noise exposure impact in a merchant seafarers’ population, needing an improvement in prevention measures and also encouraged to continue to improve onboard working conditions.

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Auditory Effects of Exposure to Noise and Solvents: A Comparative Study

Cited by 4 publications

References 16 publications

Occupational Hearing Loss Associated with the Combined Exposure of Solvents and Noise: A Systematic Review and Meta-Analysis

Occupational Hearing Loss Associated with the Combined Exposure of Solvents and Noise: A Systematic Review and Meta-Analysis

The effects of combined exposure of solvents and noise on auditory function – A systematic review and meta-analysis

Hearing Impairment in French Merchant Seafarers: Retrospective Study on Data from 8308 Audiometric Tests

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