Otoacoustic Emissions in Early Noise-Induced Hearing Loss

Shupak, Avi; Tal, Dror; Sharoni, Zohara; Oren, May; Ravid, Avi; Pratt, Hillel

doi:10.1097/mao.0b013e3180a726c9

Cited by 53 publications

(55 citation statements)

References 20 publications

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“…More recently, novel methods to assess hearing loss as a result of noise exposure are being employed, such as otoacoustic emissions that can predict lesions prior to their being disclosed by a clinical audiometry, and these are used more frequently to assess exposure to workrelated noise 29 . Studies concerned with exposure to urban recreational or environmental noise are scarce in Mexico, but one study found high levels of street noise during day time, related to automotive traffic 30 .…”

Section: Audiometric Findingsmentioning

confidence: 99%

Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise

et al. 2009

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The aim of this study was to measure the frequency of hearing loss in a sample of typical public high-school students exposed to recreational noise, and determine associated risk factors. The sample was made up of 214 teenagers from a high-school in Mexico City; subjects were selected randomly per strata. We applied a questionnaire to identify risk factors for hearing loss and performed a battery of audiologic tests consisting of otoscopy, tympanometry, and pure-tone audiometry. The mean age of the sample was 16 ± 1.07 years; 73% were male and 27%, female. Hearing loss was found in 21% of students. The main hearing loss-related risk factor was exposure to recreational noise: frequent attendance at discotheques and pop-music concerts; use of personal stereos; and noise exposure in school workshops. The high frequency of hearing loss in high school students from one Mexico City school (nearly one fifth of the sample) was found to be related to noise exposure mainly during recreational activities.

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Section: Audiometric Findingsmentioning

confidence: 99%

Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise

et al. 2009

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“…Earlier human studies were not well-geared to reveal whether MOCR strength is predictive of permanent NIHL in humans. In a prospective study, Shupak et al (2007), using a TEOAE-based MOCR test, found no evidence that MOCR strength predicted PTS in humans. However, their MOCR test was possibly confounded with crossover noise from the headphones, and the MEMR could have been activated by the high (65 dB SPL) contralateral noise elicitor (e.g., Guinan et al, 2003).…”

Section: Introductionmentioning

confidence: 97%

Otoacoustic-emission-based medial-olivocochlear reflex assays for humans

Marshall

Miller

Guinan

et al. 2014

The Journal of the Acoustical Society of America

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Otoacoustic emission (OAE) tests of the medial-olivocochlear reflex (MOCR) in humans were assessed for viability as clinical assays. Two reflection-source OAEs [TEOAEs: transient-evoked otoacoustic emissions evoked by a 47 dB sound pressure level (SPL) chirp; and discrete-tone SFOAEs: stimulus-frequency otoacoustic emissions evoked by 40 dB SPL tones, and assessed with a 60 dB SPL suppressor] were compared in 27 normal-hearing adults. The MOCR elicitor was a 60 dB SPL contralateral broadband noise. An estimate of MOCR strength, MOCR%, was defined as the vector difference between OAEs measured with and without the elicitor, normalized by OAE magnitude (without elicitor). An MOCR was reliably detected in most ears. Within subjects, MOCR strength was correlated across frequency bands and across OAE type. The ratio of across-subject variability to within-subject variability ranged from 2 to 15, with wideband TEOAEs and averaged SFOAEs giving the highest ratios. MOCR strength in individual ears was reliably classified into low, normal, and high groups. SFOAEs using 1.5 to 2 kHz tones and TEOAEs in the 0.5 to 2.5 kHz band gave the best statistical results. TEOAEs had more clinical advantages. Both assays could be made faster for clinical applications, such as screening for individual susceptibility to acoustic trauma in a hearing-conservation program. [http://dx

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“…In addition, otosclerosis involvement of the cochlea is associated with decreased counts and depressed motility of the outer hair cells [45,46] . Limited derangement of the outer hair cells might attenuate and ablate OAE response before sensorineural hearing loss becomes apparent in behavioral audiometry [47] .…”

Section: Discussionmentioning

confidence: 99%

Hearing and Otoacoustic Emissions Outcome of Stapedotomy: Does the Prosthesis Diameter Matter?

Faranesh

Zaaroura²,

Zeidan³

et al. 2017

Int Adv Otol

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OBJECTIVE:To compare the hearing and otoacoustic emissions (OAE) outcome of stapedotomy employing 0.4 and 0.6 mm diameter prostheses. MATERIALS and METHODS:In total, 18 patients with otosclerosis participated in a prospective, double-armed, randomized cohort study. All the patients underwent small fenestra drill stapedotomy employing the Causse fluroplastic large loop piston prostheses. The patients were randomly assigned to groups of 0.4 mm (n=9) and 0.6 mm (n=9) diameter prostheses. The results of pure tone air and bone audiometries, speech audiometry, and OAE conducted 12 months post operatively were compared within and between the groups. RESULTS:The within-group analysis showed significant post-stapedotomy improvements in the average air conduction pure tone thresholds in both groups (52.9±9.6 vs. 25.6±5.2 dB HL; p<0.0001 and 54.6±10.4 vs. 22.2±8.2 dB HL; p<0.0001 for the 0.4 and 0.6 mm groups, respectively) and average air-bone gap (ABG; 37.1±8.5 vs. 8.1±3.9 dB HL; p<0.0001 and 38.3±7.5 vs. 9.9±4.5 dB HL; p<0.0001 in the 0.4 and 0.6 mm groups, respectively). No significant differences were found between the groups in these outcome measures, as well as in the rate of ABG closure within 10 dB HL and the word recognition scores. Favorable outcome in the post-stapedotomy bone conduction (BC) was found for the 0.6 mm prosthesis group, reflecting superior cancellation of the Carhart phenomenon for the 500-3000 Hz pure tone thresholds average (−1.7±3.7 vs. 3.9±6.2 dB HL for the 0.4 and 0.6 mm groups, respectively; p<0.04) and 1000, 2000, and 4000 Hz average (−2.6±4.33 vs. 3.9±7.8 dB HL for the 0.4 and 0.6 mm groups, respectively; p<0.05). Small signal-to-noise ratio (SNR) values of the transient-evoked OAE (TEOAE) and distortion product OAE (DPOAE) were found at baseline and follow-up evaluation with no consistent changes post stapedotomy.CONCLUSION: Similar post-stapedotomy hearing results were found for the 0.4 and 0.6 mm prostheses with small but statistically significant advantage in BC gain and the overclosure parameter for the 0.6 mm prosthesis. OAE testing was not found to be of clinical value in the evaluation of stapedotomy hearing outcome.

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Otoacoustic Emissions in Early Noise-Induced Hearing Loss

Cited by 53 publications

References 20 publications

Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise

Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise

Otoacoustic-emission-based medial-olivocochlear reflex assays for humans

Hearing and Otoacoustic Emissions Outcome of Stapedotomy: Does the Prosthesis Diameter Matter?

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