scholarly journals A comparative study on effects of diabetes on auditory functions as measured by BERA and DPOAE

2017 ◽  
Vol 3 (2) ◽  
pp. 347
Author(s):  
K. D. Joshi ◽  
J. R. Galagali ◽  
Manoj Kumar Kanzhuly ◽  
I. D. Singh
Keyword(s):  
Hearing Loss ◽  
Comparative Study ◽  
Otoacoustic Emissions ◽  
Statistical Tests ◽  
Free Field ◽  
Otoacoustic Emission ◽  
Distortion Product Otoacoustic Emission ◽  
Distortion Product ◽  
Auditory Dysfunction ◽  
Auditory Functions

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">Diabetes is prevalent endocrine disorder associated with many complications. However, the link between auditory dysfunctions and diabetes is still vague.  The current study aims to correlate auditory dysfunction caused by DM, measured by distortion product otoacoustic emission (DPOAE) &amp; brainstem evoked otoacoustic emissions (BERA). </span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">This is a descriptive (comparative) study in which auditory functions of 100 diabetics and 100 matched non-diabetics were assessed by distortion product otoacoustic emission (DPOAE) &amp; brainstem evoked otoacoustic emissions (BERA). The data for diabetic and non- diabetic group was compared and analysed. Effects of age of individual on auditory functions were also analysed separately using suitable statistical tests.<strong> </strong>The data collected was analysed with suitable statistical tests were performed with </span><span lang="EN-GB">a significance level of ɑ=0.1 </span><span lang="EN-IN">using SPSS 2.0 software.  </span></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">The demographical variable was comparable in both the groups. The results showed decline in free field hearing, which are further adversely affected by duration of diabetes and patient’s age. The pure tone thresholds were not significantly higher in diabetics; however the thresholds were significantly higher in diabetics in older age groups. The hearing loss appear at early age in diabetics but gradually become indistinguishable from age related hearing loss. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">Although the auditory dysfunction can be linked to diabetes, but are usually not detectable at earliest stages with routine clinical and audiological tests. The DPOAE and BERA have role to play in monitoring of the auditory dysfunction.</span></p>

Effect of mastoid drilling on hearing of the contralateral ear

2013 ◽  
Vol 127 (10) ◽  
pp. 952-956 ◽  
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.

The relationship between tinnitus pitch and parameters of audiometry and distortion product otoacoustic emissions

2017 ◽  
Vol 131 (11) ◽  
pp. 1017-1025 ◽  
Author(s):  
H Keppler ◽  
S Degeest ◽  
I Dhooge
Keyword(s):  
Hearing Loss ◽  
Otoacoustic Emissions ◽  
Otoacoustic Emission ◽  
Homeostatic Plasticity ◽  
Distortion Product Otoacoustic Emissions ◽  
Chronic Tinnitus ◽  
Distortion Product Otoacoustic Emission ◽  
Frequency Range ◽  
Distortion Product ◽  
The Relationship

AbstractObjectives:Chronic tinnitus is associated with reduced auditory input, which results in changes in the central auditory system. This study aimed to examine the relationship between tinnitus pitch and parameters of audiometry and distortion product otoacoustic emissions. For audiometry, the parameters represented the edge frequency of hearing loss, the frequency of maximum hearing loss and the frequency range of hearing loss. For distortion product otoacoustic emissions, the parameters were the frequency of lowest distortion product otoacoustic emission amplitudes and the frequency range of reduced distortion product otoacoustic emissions.Method:Sixty-seven patients (45 males, 22 females) with subjective chronic tinnitus, aged 18 to 73 years, were included.Results:No correlation was found between tinnitus pitch and parameters of audiometry and distortion product otoacoustic emissions. However, tinnitus pitch fell mostly within the frequency range of hearing loss.Conclusion:The current study seems to confirm the relationship between tinnitus pitch and the frequency range of hearing loss, thus supporting the homeostatic plasticity model.

scholarly journals A Study on Effects of Diabetes Mellitus on Auditory System

2017 ◽  
Vol 24 (1) ◽  
pp. 49-55
Author(s):  
Kamal Deep Joshi ◽  
Jeevan Ramachandra Galagali ◽  
Sanajeet Kumar Singh
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Statistical Tests ◽  
Free Field ◽  
Pure Tone Audiometry ◽  
Diabetic Patients ◽  
Clinical Tests ◽  
Auditory Dysfunction ◽  
Auditory Functions

AbstractBackground and aims: Auditory dysfunctions in diabetes are known but are difficult to identify. Role of clinical tests and routine audiological tools are still to be established in early detection of diabetes-related auditory complication. The study aims to establish a link between diabetes and auditory dysfunction and assess the role of clinical examination and audiological investigations as a sensitive indicator of auditory dysfunctions in diabetics.Material and Methods: The auditory functions of 100 diabetic patients and 100 non-diabetics were assessed by clinical otological examination including free-field hearing and pure tone audiometry (PTA) in this descriptive study. The data for diabetic and non-diabetic groups and effect of age on auditory functions were analyzed with suitable statistical tests using SPSS 2.0 software with an error margin of 10%.Results: The demographical variables were comparable in both groups. The results showed a decline in free field hearing, which are furthur adversely affected by duration of diabetes and patient’s age. Overall pure tone thresholds were not significantly higher in diabetics, however the thresholds were higher in diabetics in older age groups. The hearing loss appears at an early age in diabetics but gradually becomes indistinguishable from age-related hearing loss.Conclusions: The auditory dysfunction can be linked to diabetes. It is usually not detectable at earliest stages with routine clinical and audiological tests but the clinical tests and pure tone audiometry can have a utility in monitoring the auditory dysfunction.

The Effects of Body Position on Distortion-Product Otoacoustic Emission Testing

2004 ◽  
Vol 15 (08) ◽  
pp. 566-573 ◽  
Author(s):  
Carlie Driscoll ◽  
Joseph Kei ◽  
Jenny Shyu ◽  
Natasha Fukai
Keyword(s):  
Otoacoustic Emissions ◽  
Signal To Noise Ratio ◽  
Body Position ◽  
Otoacoustic Emission ◽  
Clinical Results ◽  
Distortion Product Otoacoustic Emission ◽  
Position Effects ◽  
Distortion Product ◽  
Emission Testing ◽  
Common Clinical Practice

Otoacoustic emissions are frequently acquired from patients in a variety of body positions aside from the standard, seated orientation. Yet little knowledge is available regarding whether these deviations will produce nonpathological changes to the clinical results obtained. The present study aimed to describe the effects of body position on the distortion-product otoacoustic emissions of 60 normal-hearing adults. With particular attention given to common clinical practice, the Otodynamics ILO292, and the measurement parameters of amplitude, signal-to-noise ratio, and noise were utilized. Significant position-related effects and interactions were revealed for all parameters. Specifically, stronger emissions in the mid frequencies and higher noise levels at the extreme low and high frequencies were produced by testing subjects while lying on their side compared with the seated position. Further analysis of body position effects on emissions is warranted, in order to determine the need for clinical application of position-dependent normative data.

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

2015 ◽  
Vol 129 (12) ◽  
pp. 1174-1181 ◽  
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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