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Tinazli R, Tinazli M. Detection and Grading of Early-Stage Cochlear Damage in Land Hunters by Comparison of Extended High-Frequency Audiograms with Conventional High-Frequency Audiograms. J Audiol Otol 2022; 26:83-89. [PMID: 35196445 PMCID: PMC8996088 DOI: 10.7874/jao.2021.00605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/26/2021] [Indexed: 11/24/2022] Open
Abstract
Background and Objectives Firearms used by hunters produce intermittent loud noises. These sounds, which are above the safe limits set by the World Health Organization, can cause cochlear damage. Detection of cochlear damage at an early stage, before clinical complaints appear, will enable serious treatment measures. Subjects and Methods A total of 105 male hunters without hearing complaints and 45 controls who were not exposed to loud noise were compared and investigated. Extended high-frequency audiograms and conventional audiograms were used to compare the groups. Results The problem detection rates of conventional high-frequency audiometry, extended high-frequency audiometry, and both tests together were 59.1, 78.1, and 82.9%, respectively. There was no statistical difference between audiometric values at the extended high-frequency and at the acoustic notch at 4 kHz. When the extended high-frequency audiogram was grouped, values at the frequencies of 16, 14, and 12 kHz were affected before that at the acoustic notch at 4 kHz. Conclusions The results of our study indicate that hearing at extended high frequencies was affected before that at conventional high frequencies in individuals exposed to intermittent loud sounds. The first affected extended high frequencies were 16, 14, and 12 kHz. Although there was no statistically significant relationship between values at the notch and at extended high frequencies, the presence of a notch at 4 kHz, provided that 8 kHz is normal, may indicate a later stage of damage.
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Affiliation(s)
- Remzi Tinazli
- Department of ENT, Medical School Hospital, Near East University, Nicosia, Cyprus
| | - Mehtap Tinazli
- Department of Internal Medicine, Medical School Hospital, Near East University, Nicosia, Cyprus
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Orru H, Luha A, Pindus M, Jõgeva R, Vahisalu M, Lekk U, Indermitte E, Merisalu E. Hearing loss among military personnel in relation to occupational and leisure noise exposure and usage of personal protective equipment. Noise Health 2021; 22:90-98. [PMID: 33402609 PMCID: PMC8000139 DOI: 10.4103/nah.nah_12_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context: Hearing loss (HL) is a major health concern among military personnel due to noise from shooting, blasts, military vehicles, and noisy training environments. Nevertheless, one’s exposure can be partially reduced by using personal protective equipment (PPE). The aim of this study is to estimate the prevalence of HL among military personnel, to analyse associations between HL and self-reported occupational and leisure noise exposure, and use of PPEs. Materials and Methods: A cross-sectional study was conducted among 150 military personnel during their routine medical examinations. First, all participants filled in a questionnaire about their exposure to noise and later the respondents went through an audiometric test. The diagnostic criteria for slight, moderate, and severe HL was HL of 25–40, 41–60, and >60 dB at 4 and 6 kHz, respectively. The associations between noise exposure and HL were studied with multinomial logistic regression analysis. Results: The prevalence of slight to severe HL in high frequencies (4 and 6 kHz) among study participants was 62.7%. Nevertheless, the majority of it was slight, as the prevalence of severe HL was 9.3%. The prevalence of any kind of HL was highest in the Navy and the prevalence of severe HL was highest in the Central Command Units. The relative risk ratios (RRRs) for HL were higher among those who had been working for a long time in a noisy environment, working with noise-producing equipment, driving in a PASI or a Bandvagn or had been shooting with blanks at least once per week. It also appeared that military personnel who had HL, reported tinnitus more often. Respondents’ previous health problems, music-listening habits, and amount of exposure to loud noise in non-military environments were not independently associated with HL, but in several cases it increased the RRRs together with military exposure. We also found significantly more frequent HL among those never using PPEs. Conclusion: HL loss was more prevalent among personnel who are more often exposed to military noise, especially among those who never use PPEs. The effect was enhanced by leisure time noise, but it was not independently associated to HL.
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Affiliation(s)
- Hans Orru
- Institute of Family Medicine and Public Health, University of Tartu, Tartu, Estonia
| | - Assar Luha
- Institute of Technology, Estonian University of Life Sciences, Tartu, Estonia
| | - Mihkel Pindus
- Institute of Family Medicine and Public Health, University of Tartu, Tartu, Estonia
| | | | | | - Urve Lekk
- The North Medical Centre, Tallinn, Estonia
| | - Ene Indermitte
- Institute of Family Medicine and Public Health, University of Tartu, Tartu, Estonia
| | - Eda Merisalu
- Institute of Technology, n University of Life Sciences, Tartu, Estonia
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Irgens-Hansen K, Baste V, Bråtveit M, Lind O, Koefoed VF, Moen BE. Hearing loss in the Royal Norwegian Navy: A longitudinal study. Noise Health 2016; 18:157-65. [PMID: 27157689 PMCID: PMC4918668 DOI: 10.4103/1463-1741.181999] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The aims of this longitudinal study were to investigate a significant threshold shift (STS) among personnel working on board the Royal Norwegian Navy's (RNoN) vessels between 2012 and 2014 and to identify possible determinants of STS. Hearing thresholds were measured by pure tone audiometry in two consecutive examinations (n = 226). STS was defined as an average change in hearing thresholds ≥ + 10 dB at 2,000 Hz, 3,000 Hz, and 4,000 Hz in either ear. Determinants of STS were assessed through a questionnaire. The incidence of STS was 23.0%. Significant determinants of STS were the number of episodes of temporary threshold shifts (TTS) in the Navy, exposure to continuous loud noise during work on board, and the number of gun shots (in the Navy, hunting, and sports). This study indicated a significant association between noise exposure on board Navy vessels and development of STS.
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Affiliation(s)
- Kaja Irgens-Hansen
- Department of Global Public Health and Primary Care, Research Group for Occupational and Environmental Medicine, University of Bergen; Department of Occupational Medicine, The Norwegian Centre for Maritime Medicine, Haukeland University Hospital, Bergen, Norway
| | - Valborg Baste
- Department of Global Public Health and Primary Care, Research Group for Occupational and Environmental Medicine, University of Bergen, Bergen, Norway
| | - Magne Bråtveit
- Department of Global Public Health and Primary Care, Research Group for Occupational and Environmental Medicine, University of Bergen, Bergen, Norway
| | - Ola Lind
- Department of Audiology, Haukeland University Hospital, Bergen, Norway
| | | | - Bente E Moen
- Department of Global Public Health and Primary Care, Centre for International Health, University of Bergen, Bergen, Norway
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Strategies for Evaluating Antioxidant Efficacy in Clinical Trials Assessing Prevention of Noise-Induced Hearing Loss. FREE RADICALS IN ENT PATHOLOGY 2015. [DOI: 10.1007/978-3-319-13473-4_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abd El Dayem SM, Abd El Ghany SM, Beshr AE, Hassan AG, Attaya MS. Assessment of hearing in children with type 1 diabetes mellitus. J Pediatr Endocrinol Metab 2014; 27:393-402. [PMID: 24572980 DOI: 10.1515/jpem-2013-0287] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 12/27/2013] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To evaluate auditory function in a group of Egyptian type 1 diabetic children. METHODS This was a cross sectional observational study, which included 40 patients with type 1 diabetes and 40 controls. HbA1, urinary albumin/creatinine ratio, and auditory assessments (including dizziness questionnaire, pure tone audiometry, speech audiometry, tympanometry, and auto-acoustic cochlear emission) were completed for all patients and controls. Mann-Whitney U-test, χ2-test and Spearman's correlation were used for statistical analyses. RESULTS Assessment of pure tone audiometry revealed that the diabetics had a significantly higher reading in high frequency at 8000 Hz, 16,000 Hz, 17,000 Hz, and 18,000 Hz on the right side and at 4000 Hz, 8000 Hz, 16,000 Hz, 17,000 Hz, and 18,000 Hz on the left side. There was a significantly lower level in speech reception threshold, repetition of words, and masking level of diabetics on the left side. Evaluation of transient otoacoustic emission revealed that diabetics recorded significantly lower signal to noise ratio at 4000 Hz on the right side and at 1000, 1500, 4000, and all Hz on left side. There was significant lower emission amplitude in the right side of the diabetics group at 1500 and 4000 Hz and at 1000, 1500, and 4000 Hz on the left side. Patients with failed otoacoustic emission were significantly higher in disease duration >10 years. CONCLUSION Type 1 diabetes is associated with high/extended high frequency hearing loss, more prominent on the left side and with longer disease duration.
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Mehrparvar AH, Mirmohammadi SJ, Davari MH, Mostaghaci M, Mollasadeghi A, Bahaloo M, Hashemi SH. Conventional Audiometry, Extended High-Frequency Audiometry, and DPOAE for Early Diagnosis of NIHL. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e9628. [PMID: 24719719 PMCID: PMC3964437 DOI: 10.5812/ircmj.9628] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 11/19/2013] [Accepted: 05/13/2013] [Indexed: 12/11/2022]
Abstract
Background: Noise most frequently affects hearing system, as it may typically cause a bilateral, progressive sensorineural hearing loss at high frequencies. Objectives: This study was designed to compare three different methods to evaluate noise-induced hearing loss (conventional audiometry, high-frequency audiometry, and distortion product otoacoustic emission). Material and Methods: This was a cross-sectional study. Data was analyzed by SPSS (ver. 19) using chi square, T test and repeated measures analysis. Study samples were workers from tile and ceramic industry. Results: We found that conventional audiometry, extended high-frequency audiometry, low-tone distortion product otoacoustic emission and high-tone distortion product otoacoustic emission had abnormal findings in 29 %, 69 %, 22 %, and 52 % of participants. Most frequently affected frequencies were 4000 and 6000Hz in conventional audiometry, and 14000 and 16000 in extended high-frequency audiometry. Conclusions: Extended high-frequency audiometry was the most sensitive test for detection of hearing loss in workers exposed to hazardous noise compared with conventional audiometry and distortion product otoacoustic.
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Affiliation(s)
- Amir Houshang Mehrparvar
- Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | | | - Mohammad Hossein Davari
- Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
- Corresponding Author: Mohammad Hossein Davari, Shahid Rahnamoun Hospital, Farrokhi Ave, Yazd, IR Iran. Tel: +98-3516629193, Fax: +98-3156629194, E-mail:
| | - Mehrdad Mostaghaci
- Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Abolfazl Mollasadeghi
- Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Maryam Bahaloo
- Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Seyyed Hesam Hashemi
- Department of Occupational Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
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Le Prell CG, Spankovich C, Lobariñas E, Griffiths SK. Extended high-frequency thresholds in college students: effects of music player use and other recreational noise. J Am Acad Audiol 2013; 24:725-39. [PMID: 24131608 PMCID: PMC4111237 DOI: 10.3766/jaaa.24.8.9] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Human hearing is sensitive to sounds from as low as 20 Hz to as high as 20,000 Hz in normal ears. However, clinical tests of human hearing rarely include extended high-frequency (EHF) threshold assessments, at frequencies extending beyond 8000 Hz. EHF thresholds have been suggested for use monitoring the earliest effects of noise on the inner ear, although the clinical usefulness of EHF threshold testing is not well established for this purpose. PURPOSE The primary objective of this study was to determine if EHF thresholds in healthy, young adult college students vary as a function of recreational noise exposure. RESEARCH DESIGN A retrospective analysis of a laboratory database was conducted; all participants with both EHF threshold testing and noise history data were included. The potential for "preclinical" EHF deficits was assessed based on the measured thresholds, with the noise surveys used to estimate recreational noise exposure. STUDY SAMPLE EHF thresholds measured during participation in other ongoing studies were available from 87 participants (34 male and 53 female); all participants had hearing within normal clinical limits (≤25 HL) at conventional frequencies (0.25-8 kHz). RESULTS EHF thresholds closely matched standard reference thresholds [ANSI S3.6 (1996) Annex C]. There were statistically reliable threshold differences in participants who used music players, with 3-6 dB worse thresholds at the highest test frequencies (10-16 kHz) in participants who reported long-term use of music player devices (>5 yr), or higher listening levels during music player use. CONCLUSIONS It should be possible to detect small changes in high-frequency hearing for patients or participants who undergo repeated testing at periodic intervals. However, the increased population-level variability in thresholds at the highest frequencies will make it difficult to identify the presence of small but potentially important deficits in otherwise normal-hearing individuals who do not have previously established baseline data.
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Affiliation(s)
- Colleen G Le Prell
- Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville, FL
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Digital music exposure reliably induces temporary threshold shift in normal-hearing human subjects. Ear Hear 2013; 33:e44-58. [PMID: 22885407 DOI: 10.1097/aud.0b013e31825f9d89] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVES One of the challenges for evaluating new otoprotective agents for potential benefit in human populations is the availability of an established clinical paradigm with real-world relevance. These studies were explicitly designed to develop a real-world digital music exposure that reliably induces temporary threshold shift (TTS) in normal-hearing human subjects. DESIGN Thirty-three subjects participated in studies that measured effects of digital music player use on hearing. Subjects selected either rock or pop music, which was then presented at 93 to 95 (n = 10), 98 to 100 (n = 11), or 100 to 102 (n = 12) dBA in-ear exposure level for a period of 4 hr. Audiograms and distortion product otoacoustic emissions (DPOAEs) were measured before and after music exposure. Postmusic tests were initiated 15 min, 1 hr 15 min, 2 hr 15 min, and 3 hr 15 min after the exposure ended. Additional tests were conducted the following day and 1 week later. RESULTS Changes in thresholds after the lowest-level exposure were difficult to distinguish from test-retest variability; however, TTS was reliably detected after higher levels of sound exposure. Changes in audiometric thresholds had a "notch" configuration, with the largest changes observed at 4 kHz (mean = 6.3 ± 3.9 dB; range = 0-14 dB). Recovery was largely complete within the first 4 hr postexposure, and all subjects showed complete recovery of both thresholds and DPOAE measures when tested 1 week postexposure. CONCLUSIONS These data provide insight into the variability of TTS induced by music-player use in a healthy, normal-hearing, young adult population, with music playlist, level, and duration carefully controlled. These data confirm the likelihood of temporary changes in auditory function after digital music-player use. Such data are essential for the development of a human clinical trial protocol that provides a highly powered design for evaluating novel therapeutics in human clinical trials. Care must be taken to fully inform potential subjects in future TTS studies, including protective agent evaluations, that some noise exposures have resulted in neural degeneration in animal models, even when both audiometric thresholds and DPOAE levels returned to pre-exposure values.
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Extended Frequency Range Hearing Thresholds and Otoacoustic Emissions in Acute Acoustic Trauma. Otol Neurotol 2012; 33:1315-22. [DOI: 10.1097/mao.0b013e318263d598] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Le Prell CG, Dolan DF, Bennett DC, Boxer PA. Nutrient plasma levels achieved during treatment that reduces noise-induced hearing loss. Transl Res 2011; 158:54-70. [PMID: 21708356 PMCID: PMC3125531 DOI: 10.1016/j.trsl.2011.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 02/04/2011] [Accepted: 02/07/2011] [Indexed: 10/18/2022]
Abstract
Hearing loss encompasses both temporary and permanent deficits. If temporary threshold shift (TTS) and permanent threshold shift (PTS) share common pathological mechanisms, then agents that reduce PTS also should reduce TTS. Several antioxidant agents have reduced PTS in rodent models; however, reductions in TTS have been inconsistent. This study first determined whether dietary antioxidants (beta-carotene and vitamins C and E) delivered in combination with magnesium (Mg) reliably increase plasma concentrations of the active agents. Then, additional manipulations tested the hypothesis that these nutrients reduce acute TTS insult in the first 24 h after loud sound as well as longer lasting changes in hearing measured up to 7 days postnoise. Saline or nutrients were administered to guinea pigs prior to and after noise exposure. Sound-evoked electrophysiological responses were measured before noise, with tests repeated 1-h postnoise, as well as 1-day, 3-days, 5-days, and 7-days postnoise. All subjects showed significant functional recovery; subjects treated with nutrients recovered more rapidly and had better hearing outcomes at early postnoise times as well as the final test time. Thus, this combination of nutrients, which produced significant increases in plasma concentrations of vitamins C and E and Mg, effectively reduced hearing loss at multiple postnoise times. These data suggest that free radical formation contributes to TTS as well as PTS insults and suggest a potential opportunity to prevent TTS in human populations.
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Affiliation(s)
- Colleen G Le Prell
- Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville, FL 32610, USA.
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Kuronen P, Toppila E, Starck J, Pa¨a¨kko¨nen R, Sorri MJ. Modelling the risk of noise-induced hearing loss among military pilots. Int J Audiol 2009; 43:79-84. [DOI: 10.1080/14992020400050013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Esko Toppila
- Finnish Institute of Occupational Health, Helsinki
| | - Jukka Starck
- Tampere Regional Institute of Occupational Health, Tampere
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Qiang Y, Rebok GW, Baker SP, Li G. Hearing deficit in a birth cohort of U.S. male commuter air carrier and air taxi pilots. ACTA ACUST UNITED AC 2009; 79:1051-5. [PMID: 18998487 DOI: 10.3357/asem.2325.2008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE Long-term exposure to multiple risk factors in aviation may place pilots at excess risk of developing hearing deficits. We examined the incidence and risk factors for hearing deficit in a birth cohort of male commuter and air taxi pilots. METHODS The subjects (N = 3019), who were 45-54 yr of age and held Class I medical certificates in 1987, were followed up from 1987 to 1997 through the medical certification system of the Federal Aviation Administration (FAA). In this study, hearing deficit refers to the FAA pathology code 220 (defective hearing, deafness, not elsewhere classified). Poisson regression modeling based on generalized estimation equations was used to assess the associations between pilot characteristics and the risk of developing hearing deficit. RESULTS The 10-yr follow-up accumulated a total of 20,671 person-years and 574 incident cases of hearing deficit, yielding an incidence rate of 27.8 per 1000 person-years. Compared with age 45-49 yr, the risk of developing hearing deficit at age 50-54 yr, 55-59 yr, and 60-64 yr increased by 12% [adjusted relative risk (RR) 1.12, 95% confidence interval (CI) 0.98-1.30], 34% (RR 1.34, 95% CI 1.13-1.59), and 79% (RR 1.79, 95% CI 1.20-2.67), respectively. CONCLUSIONS Hearing deficit is prevalent among commuter air carrier and air taxi pilots and the risk of hearing deficit increases progressively with pilot age. Effective programs for preventing excess hearing loss in the pilot population are warranted.
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Affiliation(s)
- Yandong Qiang
- Department of International Health, Center for Injury Research and Policy, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, MD 21205, USA.
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Goodman SS, Fitzpatrick DF, Ellison JC, Jesteadt W, Keefe DH. High-frequency click-evoked otoacoustic emissions and behavioral thresholds in humans. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2009; 125:1014-32. [PMID: 19206876 PMCID: PMC2659524 DOI: 10.1121/1.3056566] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 12/02/2008] [Accepted: 12/04/2008] [Indexed: 05/15/2023]
Abstract
Relationships between click-evoked otoacoustic emissions (CEOAEs) and behavioral thresholds have not been explored above 5 kHz due to limitations in CEOAE measurement procedures. New techniques were used to measure behavioral thresholds and CEOAEs up to 16 kHz. A long cylindrical tube of 8 mm diameter, serving as a reflectionless termination, was used to calibrate audiometric stimuli and design a wideband CEOAE stimulus. A second click was presented 15 dB above a probe click level that varied over a 44 dB range, and a nonlinear residual procedure extracted a CEOAE from these click responses. In some subjects (age 14-29 years) with normal hearing up to 8 kHz, CEOAE spectral energy and latency were measured up to 16 kHz. Audiometric thresholds were measured using an adaptive yes-no procedure. Comparison of CEOAE and behavioral thresholds suggested a clinical potential of using CEOAEs to screen for high-frequency hearing loss. CEOAE latencies determined from the peak of averaged, filtered temporal envelopes decreased to 1 ms with increasing frequency up to 16 kHz. Individual CEOAE envelopes included both compressively growing longer-delay components consistent with a coherent-reflection source and linearly or expansively growing shorter-delay components consistent with a distortion source. Envelope delays of both components were approximately invariant with level.
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Affiliation(s)
- Shawn S Goodman
- Boys Town National Research Hospital, Omaha, Nebraska 68131, USA.
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En–tong W, Wei–xi G, Wei C, Xiao–li M, Hui X, Jun C. Detection of Early Noise–Induced Hearing Impairment in Pilots. J Otol 2008. [DOI: 10.1016/s1672-2930(08)50023-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Schmuziger N, Patscheke J, Probst R. An assessment of threshold shifts in nonprofessional pop/rock musicians using conventional and extended high-frequency audiometry. Ear Hear 2007; 28:643-8. [PMID: 17804978 DOI: 10.1097/aud.0b013e31812f7144] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The clinical value of extended high-frequency audiometry for the detection of noise-induced hearing loss has not been established conclusively. The purpose of this study was to assess the relative temporary threshold shift (TTS) in two frequency regions (conventional versus extended high frequency). In this exploratory study, pure-tone thresholds from 0.5 to 14 kHz were measured in both ears of 16 nonprofessional pop/rock musicians (mean age, 35 yr; range, 27 to 49 yr), before and after a 90-minute rehearsal session. All had experienced repeated exposures to intense sound levels during at least 5 yr of their musical careers. After the rehearsal, median threshold levels were found to be significantly poorer for frequencies from 0.5 to 8 kHz (Wilcoxon signed rank test, p <or= 0.004) but were unchanged in the extended high-frequency range from 9 to 14 kHz. Decreases in the median threshold values measured before the rehearsal were present across the conventional frequency range, most notably at 6 kHz, but were not observed in the extended high-frequency range. On the basis of these results, extended high-frequency audiometry does not seem advantageous as a means of the early detection of noise-induced hearing loss.
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Affiliation(s)
- Nicolas Schmuziger
- Department of Otorhinolaryngology, University Hospital, Basel, Switzerland.
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