Analysis of Hearing and Tinnitus in Workers Exposed to Occupational Noise

Boger, Marlene Escher; Sampaio, André Luiz Lopes; Oliveira, Carlos Augusto Costa Pires de

doi:10.5935/0946-5448.20160017

Cited by 13 publications

(13 citation statements)

References 13 publications

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“…The association between hearing loss, tinnitus and occupation has been previously demonstrated [ 34 , 43 , 65 , 66 , 67 , 68 , 69 , 70 , 71 ]. The aim of this study was to survey patients with chronic tinnitus with and without a history of long-term work-related noise exposure, comparing demographic variables, tinnitus and hearing loss characteristics and self-administered questionnaire responses for tinnitus, hearing loss and hyperacusis.…”

Section: Discussionmentioning

confidence: 99%

Work-Related Noise Exposure in a Cohort of Patients with Chronic Tinnitus: Analysis of Demographic and Audiological Characteristics

Ralli

Balla

Greco

et al. 2017

IJERPH

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Work-related noise exposure is one of the major factors contributing to the development of adult-onset hearing loss and tinnitus. The aim of this study was to analyze, in patients with chronic tinnitus and long-term occupational noise exposure, (A) characteristics of hearing loss, tinnitus, comorbidities, demographic characteristics and a history of work-related noise exposure and (B) differences among individuals employed in occupations with high and low risk of developing work-related noise-induced hearing loss (NIHL). One hundred thirty six patients with chronic tinnitus and at least a 10 year-long working history were divided into two groups based on the risk of their profession to induce NIHL. Individuals employed in jobs at high risk for NIHL were mostly males and exhibited a poorer hearing threshold, more evident in the left ear. Tinnitus was mostly bilateral; the next largest presentation was left-sided; patients described their tinnitus as buzzing or high-pitched. Correlation between age, length of tinnitus and worse hearing was found. Patients with a higher degree of hearing impairment were mostly males and were more likely to have a family history of hearing loss and at least one cardiovascular comorbidity. Our study shows some differences in individuals with tinnitus and a history of a profession associated with increased exposure to NIHL compared to those without such a history.

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Section: Discussionmentioning

confidence: 99%

Work-Related Noise Exposure in a Cohort of Patients with Chronic Tinnitus: Analysis of Demographic and Audiological Characteristics

Ralli

Balla

Greco

et al. 2017

IJERPH

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“…With respect to monitoring noise-induced damage to the OHCs, a common strategy for monitoring OHC function is the use of DPOAE tests. Not only are DPOAEs well known for use identifying OHC damage due to cisplatin or aminoglycoside treatments (for recent review, see Campbell and Le Prell 2018), DPOAEs have shown high sensitivity to noise injury with deficits in DPOAE amplitude reportedly associated with occupational noise (Seixas et al 2004;Korres et al 2009;Seixas et al 2012;Boger, Sampaio, and Oliveira 2017), recreational music player use (Santaolalla Montoya et al 2008;Lee et al 2014) and military service (de Souza Chelminski Barreto et al 2011). Observations that noise-induced deficits in DPOAE and click-evoked otoacoustic emission (CEOAE) thresholds significantly exceeded noise-induced TTS have been used to suggest that OAEs are a more sensitive measure of noise injury than the audiogram itself .…”

Section: Effects Of Noise On Cochlear Hair Cellsmentioning

confidence: 99%

“…The presence of a permanent NIHL suggests OHC pathology accompanied any neuropathic change that might potentially be inferred from the ABR latency increases and other atypical ABR results listed in Table 1. Decreased DPOAE amplitude is well documented in noise-exposed populations (Seixas et al, 2004;Korres et al 2009;Seixas et al 2012;Boger, Sampaio, and Oliveira 2017). As seen in Table 1, many of the studies employing ABR metrics to assess potential effects of occupational noise exposures did not include the parallel collection of DPOAE data, complicating the interpretation of the observed changes in ABR amplitude and latency.…”

Section: Relationship Between Occupational Noise Exposure and Abr Metmentioning

confidence: 99%

Effects of noise exposure on auditory brainstem response and speech-in-noise tasks: a review of the literature

Prell

2018

International Journal of Audiology

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Objective: Short-term noise exposure that induces transient changes in thresholds has induced permanent cochlear synaptopathy in multiple species. Here, the literature was reviewed to gain translational insight into the relationships between noise exposure, ABR metrics, speech-in-noise performance and TTS in humans. Design: PubMed-based literature search, retrieval and review of full-text articles. Study Sample: Peerreviewed literature identified using PubMed search. Results: Permanent occupational noise-induced hearing loss (NIHL) is frequently accompanied by abnormal ABR amplitude and latency. In the absence of NIHL, there are mixed results for relationships between noise exposure and ABR metrics. Interpretation of speech-in-noise deficits is difficult as both cochlear synaptopathy and outer hair cell (OHC) loss can drive deficits. Reductions in Wave I amplitude during TTS may reflect temporary OHC pathology rather than cochlear synaptopathy. Use of diverse protocols across studies reduces the ability to compare outcomes across studies. Conclusions: Longitudinal ABR and speech-in-noise data collected using consistent protocols are needed. Although speech-in-noise testing may not reflect cochlear synaptopathy, speech-in-noise testing should be completed as part of a comprehensive test battery to provide the objective measurement of patient difficulty.

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“…Noise, the high exposure to which is hazardous to human health, is present in the different branches of economic activity 1 . Occupational noise exposure is one of the major contributing factors to adult-onset hearing loss and tinnitus, 2 where workers exposed occupationally to noise commonly complain of tinnitus and hearing impairment 1 . Noise-induced hearing loss (NIHL) may be accompanied by psycho-social consequences, such as social isolation, frustration, and depression 3 …”

Section: Introductionmentioning

confidence: 99%

Audiometric notch for the prediction of early occupational hearing loss and its association with the interleukin-1beta genotype

Amer

Taha

Ibrahim

et al. 2019

Journal of Taibah University Medical Sciences

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Objectives Noise-induced hearing loss (NIHL) is a frequent and irreversible industrial-health problem, the early diagnosis of which can prevent hearing deterioration, especially of speech frequencies. This study aimed to assess hearing impairment in workers occupationally exposed to noise. Audiometric notches and IL-1β gene polymorphisms were evaluated. Methods The study included 98 workers employed in a textile factory. Pure-tone audiometric testing was conducted for all workers, using a manual pure-tone diagnostic audiometer, and the noise level was measured at four different work sites in a spinning section. IL-1β gene polymorphism was determined using PCR-RFLP methods. Results Workers were exposed to a mean noise level of 105.5 dB. As many as 27.6% of them complained of tinnitus and the majority suffered from some degree of hearing loss in either ear, but none of them exceeded 60 dB. Audiometric notches were detected in either one or both ears. Only 28.6% of workers showed the absence of notches. The TT genotype of IL-1β polymorphisms was dominant in 49% of the workers, whereas TC was predominant in 39.8% and CC in 11.2%. The CC genotype was associated with smoking (54.5%) and audiometric notches (100%). The IL-1β genotype distribution showed no significant difference with or without tinnitus. Conclusion This study showed an association between the CC genotype and smoking as well as audiometric notches in workers occupationally exposed to noise. Workers showing audiometric notches should be followed up regularly. Further studies are required to confirm the interrelationship amongst tinnitus, audiometric notches, and IL-1β genotypes.

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Analysis of Hearing and Tinnitus in Workers Exposed to Occupational Noise

Abstract: It is concluded that failures in DPOAE and tinnitus are predictors of hearing damage in normal-hearing workers.

Cited by 13 publications

References 13 publications

Work-Related Noise Exposure in a Cohort of Patients with Chronic Tinnitus: Analysis of Demographic and Audiological Characteristics

Work-Related Noise Exposure in a Cohort of Patients with Chronic Tinnitus: Analysis of Demographic and Audiological Characteristics

Effects of noise exposure on auditory brainstem response and speech-in-noise tasks: a review of the literature

Audiometric notch for the prediction of early occupational hearing loss and its association with the interleukin-1beta genotype

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