Otoacoustic emissions in young adults with a history of otitis media

The aim of this study was to investigate otoacoustic emissions in young adults who had a history of otitis media (OM) in childhood and to assess whether a history of OM had an irreversible effect on hearing. We studied 116 cases between 15 and 25 years of age, divided into three groups. Each subject underwent a single examination comprising otoscopy, pure-tone audiometry (PTA), tympanometry, and transient evoked otoacoustic emission (TEOAE) and distortion product otoacoustic emission (DPOAE) testing. Subjects in the first and second groups had normal audiometric hearing thresholds and type A tympanograms. The only difference between the first and second group was the presence or absence of a history of OM. The third group consisted of patients diagnosed as having active OM; these patients had poorer hearing thresholds and type B or C tympanograms. After statistical analysis of TEOAE and DPOAE results (one-way analysis of variance test), significant differences were noted between groups. Otoacoustic emission levels were, unsurprisingly, lowest in the third group, as expected. However, the most striking result in the study was that significantly fewer otoacoustic emissions were detected in subjects with a history of OM than in subjects without a history of OM. These findings suggest that OM in childhood may cause minor but irreversible damage to the middle ear or cochlea. Otoacoustic emissions testing can be used to detect this sub-clinical damage.

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Effect of mastoid drilling on hearing of the contralateral ear

The Journal of Laryngology & Otology ◽

10.1017/s0022215113001965 ◽

2013 ◽

Vol 127 (10) ◽

pp. 952-956 ◽

Cited By ~ 6

Author(s):

A Goyal ◽

P P Singh ◽

A Vashishth

Keyword(s):

Hearing Loss ◽

High Frequency ◽

Otoacoustic Emissions ◽

Pure Tone Audiometry ◽

Otoacoustic Emission ◽

Prospective Clinical Study ◽

Distortion Product Otoacoustic Emission ◽

High Frequencies ◽

Distortion Product ◽

Contralateral Ear

AbstractObjectives:This study aimed to: understand the effect that high intensity noise associated with drilling (during otological surgery) has on hearing in the contralateral ear; determine the nature of hearing loss, if any, by establishing whether it is temporary or persistent; and examine the association between hearing loss and various drill parameters.Methods:A prospective clinical study was carried out at a tertiary centre. Thirty patients with unilateral cholesteatoma and normal contralateral hearing were included. Patients were evaluated pre-operatively and for five days following surgery using high frequency pure tone audiometry, and low and high frequency transient evoked and distortion product otoacoustic emission testing.Results:The findings revealed statistically significant changes in distortion product otoacoustic emissions at high frequencies (p = 0.016), and in transient evoked otoacoustic emissions at both low and high frequencies (p = 0.035 and 0.021, respectively). There was a higher statistical association between otoacoustic emission changes and cutting burrs compared with diamond burrs.Conclusion:Drilling during mastoid surgery poses a threat to hearing in the contralateral ear due to noise and vibration conducted transcranially.

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Comparison of distortion product otoacoustic emissions and pure tone audiometry in occupational screening for auditory deficit due to noise exposure

The Journal of Laryngology & Otology ◽

10.1017/s0022215115002790 ◽

2015 ◽

Vol 129 (12) ◽

pp. 1174-1181 ◽

Cited By ~ 4

Author(s):

N Wooles ◽

M Mulheran ◽

P Bray ◽

M Brewster ◽

A R Banerjee

Keyword(s):

Otoacoustic Emissions ◽

Pure Tone ◽

Noise Exposure ◽

Outer Hair Cell ◽

Cell Function ◽

Pure Tone Audiometry ◽

Otoacoustic Emission ◽

Distortion Product Otoacoustic Emissions ◽

Distortion Product Otoacoustic Emission ◽

Distortion Product

AbstractObjective:To examine whether distortion product otoacoustic emissions can serve as a replacement for pure tone audiometry in longitudinal screening for occupational noise exposure related auditory deficit.Methods:A retrospective review was conducted of pure tone audiometry and distortion product otoacoustic emission data obtained sequentially during mandatory screening of brickyard workers (n = 16). Individual pure tone audiometry thresholds were compared with distortion product otoacoustic emission amplitudes, and a correlation of these measurements was conducted.Results:Pure tone audiometry threshold elevation was identified in 13 out of 16 workers. When distortion product otoacoustic emission amplitudes were compared with pure tone audiometry thresholds at matched frequencies, no evidence of a robust relationship was apparent. Seven out of 16 workers had substantial distortion product otoacoustic emissions with elevated pure tone audiometry thresholds.Conclusion:No clinically relevant predictive relationship between distortion product otoacoustic emission amplitude and pure tone audiometry threshold was apparent. These results do not support the replacement of pure tone audiometry with distortion product otoacoustic emissions in screening. Distortion product otoacoustic emissions at frequencies associated with elevated pure tone audiometry thresholds are evidence of intact outer hair cell function, suggesting that sites distinct from these contribute to auditory deficit following ototrauma.

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Effect of chronic suppurative otitis media on distortion product otoacoustic emission input–output functions in conventional and ultra-high frequencies

The Journal of Laryngology & Otology ◽

10.1017/s0022215119002123 ◽

2019 ◽

Vol 133 (11) ◽

pp. 995-1004

Author(s):

S I Kirubaharane ◽

S Palani ◽

A Alexander ◽

A Sreenivasan

Keyword(s):

Otitis Media ◽

Otoacoustic Emissions ◽

Otoacoustic Emission ◽

Chronic Suppurative Otitis Media ◽

Distortion Product Otoacoustic Emissions ◽

Control Group ◽

Clinical Group ◽

Distortion Product Otoacoustic Emission ◽

Suppurative Otitis Media ◽

Distortion Product

AbstractBackgroundDetection and valid measurements of distortion product otoacoustic emissions are not influenced by cochlear status alone, but also by middle-ear status. There is a need to understand the use of ultra-high frequency distortion product otoacoustic emissions in cases of abnormal distortion product otoacoustic emission findings for conventional frequencies related to the middle-ear condition.MethodThe present study investigated distortion product otoacoustic emission input–output functions in conventional and ultra-high frequencies in: 37 adults with chronic suppurative otitis media (clinical group) and 37 adults with normal hearing sensitivity (control group).ResultsThere were significant reductions in distortion product otoacoustic emission amplitude and mean signal-to-noise ratio in the clinical group compared to the control group, especially for conventional frequencies.ConclusionThere was a significant reduction in the rate of ears with measurable distortion product otoacoustic emissions in the clinical group, especially for conventional frequencies. The effect of chronic suppurative otitis media was more pronounced in the conventional frequency range compared to the smaller effect seen in the ultra-high frequency range.

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Acute Alcohol Intake Deteriorates Hearing Thresholds and Speech Perception in Noise

Audiology and Neurotology ◽

10.1159/000510694 ◽

2020 ◽

pp. 1-8

Author(s):

Hyo Geun Choi ◽

Sung Kwang Hong ◽

Hyo-Jeong Lee ◽

Jiwon Chang

Keyword(s):

Speech Perception ◽

Otoacoustic Emissions ◽

Pure Tone ◽

Alcohol Intake ◽

Human Subjects ◽

Pure Tone Audiometry ◽

Distortion Product Otoacoustic Emission ◽

Speech Perception In Noise ◽

Distortion Product ◽

Hearing Thresholds

Objectives: The hearing process involves complex peripheral and central auditory pathways and could be influenced by various situations or medications. To date, there is very little known about the effects of alcohol on the auditory performances. The purpose of the present study was to evaluate how acute alcohol administration affects various aspects of hearing performance in human subjects, from the auditory perceptive threshold to the speech-in-noise task, which is cognitively demanding. Methods: A total of 43 healthy volunteers were recruited, and each of the participants received calculated amounts of alcohol according to their body weight and sex with a targeted blood alcohol content level of 0.05% using the Widmark formula. Hearing was tested in alcohol-free conditions (no alcohol intake within the previous 24 h) and acute alcohol conditions. A test battery composed of pure-tone audiometry, speech reception threshold (SRT), word recognition score (WRS), distortion product otoacoustic emission (DPOAE), gaps-in-noise (GIN) test, and Korean matrix sentence test (testing speech perception in noise) was performed in the 2 conditions. Results: Acute alcohol intake elevated pure-tone hearing thresholds and SRT but did not affect WRS. Both otoacoustic emissions recorded with DPOAE and the temporal resolution measured with the GIN test were not influenced by alcohol intake. The hearing performance in a noisy environment in both easy (−2 dB signal-to-noise ratio [SNR]) and difficult (−8 dB SNR) conditions was decreased by alcohol. Conclusions: Acute alcohol elevated auditory perceptive thresholds and affected performance in complex and difficult auditory tasks rather than simple tasks.

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Tinnitus in adolescents: the start of the vulnerability of the auditory pathways

CoDAS ◽

10.1590/2317-1782/20152013045 ◽

2015 ◽

Vol 27 (1) ◽

pp. 5-12 ◽

Cited By ~ 6

Author(s):

Tanit Ganz Sanchez ◽

Juliana Casseb Oliveira ◽

Márcia Akemi Kii ◽

Katya Freire ◽

Jaci Cota ◽

...

Keyword(s):

Private School ◽

Otoacoustic Emissions ◽

Pure Tone Audiometry ◽

Otoacoustic Emission ◽

Common Symptom ◽

Distortion Product ◽

Hearing Thresholds ◽

High Frequency Audiometry ◽

Significant Difference ◽

Hearing Damage

INTRODUCTION: Although tinnitus is an increasingly common symptom, few studies have assessed its prevalence or incidence among adolescents. PURPOSE: To assess whether the presence of tinnitus in adolescents is associated with minimal hearing damage, evaluated through high-frequency audiometry (HFA), otoacoustic emission (OAE), and loudness discomfort level (LDL). METHODS: The sample comprised 168 adolescents of a private school (61.3% boys; mean age 14.1 years old; standard deviation=2). All of them completed a questionnaire about tinnitus and hypersensitivity to sounds (sound intolerance), and then underwent otoscopy, pure-tone audiometry, HFA, LDL, transient and distortion product otoacoustic emissions (TOAE and DPOAE), and tinnitus pitch/loudness matching (the latter only in those with tinnitus). Participants were later divided into three groups: with no tinnitus (n=73, 43.4%), with sporadic tinnitus (n=47, 28%), and with constant tinnitus (n=48, 28.6%). RESULTS: No significant difference was observed between the groups regarding audiometry thresholds in frequencies from 0.25 to 16 kHz, or TOAE and DPOAE. However, the LDL in adolescents with constant tinnitus was significantly lower than that in other groups, suggesting hypersensitivity to sounds. CONCLUSION: There was no evidence of minimal hearing damage in the audiometry and OAE. Nonetheless, the decreased LDL in adolescents with constant tinnitus suggests that their auditory system is more sensitive. Therefore, this may be the first sign of vulnerability to sounds. Future medium- to long-term monitoring of these students may show whether they will begin a process of functional impairment, altering hearing thresholds, and OAE.

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