Detection and Grading of Early-Stage Cochlear Damage in Land Hunters by Comparison of Extended High-Frequency Audiograms with Conventional High-Frequency Audiograms

Tınazlı, Remzi; Tınazlı, Mehtap

doi:10.7874/jao.2021.00605

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…Extended high frequency (EHF) hearing is often compromised in participant populations in which cochlear synaptopathy has been inferred based on neural potentials (for recent review, see Lough and Plack, 2022 ). Although neural potentials were not measured, hunters in Cyprus were reported to have both conventional and EHF hearing deficits that preceded complaints of hearing difficulty ( Tinazli and Tinazli, 2022 ). Engdahl and Aarhus (2022) did not test EHF frequencies, but reported hearing deficits at 3, 4, and 6 kHz in adult recreational firearm users participating in the Trondelag Health (HUNT) study in Norway.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of hidden hearing loss in normal-hearing firearm users

Grinn

Prell²

2022

Front. Neurosci.

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Some noise exposures resulting in temporary threshold shift (TTS) result in cochlear synaptopathy. The purpose of this retrospective study was to evaluate a human population that might be at risk for noise-induced cochlear synaptopathy (i.e., “hidden hearing loss”). Participants were firearm users who were (1) at-risk for prior audiometric noise-induced threshold shifts, given their history of firearm use, (2) likely to have experienced complete threshold recovery if any prior TTS had occurred, based on this study’s normal-hearing inclusion criteria, and (3) not at-risk for significant age-related synaptopathic loss, based on this study’s young-adult inclusion criteria. 70 participants (age 18–25 yr) were enrolled, including 33 firearm users experimental (EXP), and 37 non-firearm users control (CNTRL). All participants were required to exhibit audiometric thresholds ≤20 dB HL bilaterally, from 0.25 to 8 kHz. The study was designed to test the hypothesis that EXP participants would exhibit a reduced cochlear nerve response compared to CNTRL participants, despite normal-hearing sensitivity in both groups. No statistically significant group differences in auditory performance were detected between the CNTRL and EXP participants on standard audiom to etry, extended high-frequency audiometry, Words-in-Noise performance, distortion product otoacoustic emission, middle ear muscle reflex, or auditory brainstem response. Importantly, 91% of EXP participants reported that they wore hearing protection either “all the time” or “almost all the time” while using firearms. The data suggest that consistent use of hearing protection during firearm use can effectively protect cochlear and neural measures of auditory function, including suprathreshold responses. The current results do not exclude the possibility that neural pathology may be evident in firearm users with less consistent hearing protection use. However, firearm users with less consistent hearing protection use are also more likely to exhibit threshold elevation, among other cochlear deficits, thereby confounding the isolation of any potentially selective neural deficits. Taken together, it seems most likely that firearm users who consistently and correctly use hearing protection will exhibit preserved measures of cochlear and neural function, while firearm users who inconsistently and incorrectly use hearing protection are most likely to exhibit cochlear injury, rather than evidence of selective neural injury in the absence of cochlear injury.

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Section: Introductionmentioning

confidence: 99%

Evaluation of hidden hearing loss in normal-hearing firearm users

Grinn

Prell²

2022

Front. Neurosci.

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A prognostic value of estimated pulse wave velocity in idiopathic sudden sensorineural hearing loss

Seo,

Ko,

Chung

et al. 2023

Eur Arch Otorhinolaryngol

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Association of Occupational Noise Exposure and Extended High-Frequency Hearing Loss in Young Workers With Normal Hearing

Xue,

Zhao,

Gao

et al. 2024

Ear &Amp; Hearing

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Objectives: Studies on the relationship between occupational noise exposure and extended high-frequency (EHF) hearing loss are limited. This study investigated the relationship between occupational noise exposure and EHF hearing loss in workers exposed to noise as measured by sound pressure level, exposure duration, and kurtosis to help provide a basis for early detection and prevention of hearing loss in noise-exposed workers. Design: A cross-sectional survey was conducted among 602 participants with 472 noise-exposed workers and 130 non-noise-exposed controls. General demographic characteristics, noise exposure data, and hearing thresholds at conventional frequencies (0.25 to 8 kHz) and EHF (9 to 16 kHz) were collected and analyzed. Linear mixed-effects model analyses between hearing thresholds of EHF and noise exposure indicators including the 8-h equivalent continuous A-weighted sound pressure level (L Aeq,8h), cumulative noise exposure (CNE), and kurtosis-adjusted CNE (CNE-K) were conducted. Results: Among the 602 participants included in the analysis, 472 individuals (78.4%) were occupationally exposed to noise exposures ≥75 dBA. Significant differences (p < 0.05) were observed in sex, exposure duration, L Aeq,8h, CNE, and CNE-K between the noise-exposed group and the nonexposed group. The mean hearing thresholds for all tested extended high frequencies ranging from 9 to 16 kHz were significantly higher in the noise-exposed group than in the nonexposed group (p < 0.05). The mean hearing thresholds of subjects in different groups of L Aeq,8h exposures were generally stable with little variance in the conventional frequencies (0.25 to 8 kHz) but differed in the EHF range. Moreover, EHF hearing loss appeared to be most prominent in the subjects exposed to noise with 80 dBA < L Aeq,8h ≤ 85 dBA. After the combination of the sound pressure level, exposure duration, and kurtosis by using the noise exposure indicators CNE and CNE-K, the subjects at the different noise exposures showed significant differences in hearing thresholds at EHF (p < 0.05). Linear mixed-effected model analyses showed that the CNE-K was the best to indicate noise-induced hearing loss among the three noise exposure indicators at EHF. Conclusions: The results indicate that the EHF hearing threshold testing is more sensitive to identifying early occupational noise-induced hearing loss than conventional audiometry. The CNE-K, an indicator combining noise energy, exposure duration, and kurtosis, is a more comprehensive and effective method for assessing the risk of EHF hearing loss due to occupational noise exposure.

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Detection and Grading of Early-Stage Cochlear Damage in Land Hunters by Comparison of Extended High-Frequency Audiograms with Conventional High-Frequency Audiograms

Cited by 3 publications

References 15 publications

Evaluation of hidden hearing loss in normal-hearing firearm users

Evaluation of hidden hearing loss in normal-hearing firearm users

A prognostic value of estimated pulse wave velocity in idiopathic sudden sensorineural hearing loss

Association of Occupational Noise Exposure and Extended High-Frequency Hearing Loss in Young Workers With Normal Hearing

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