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.

scholarly journals Hearing impairment in patients of hypothyroidism in sub Himalayan region

2020 ◽  
Vol 6 (8) ◽  
pp. 1494
Author(s):  
Vikasdeep Gupta ◽  
Sunder Singh Dogra ◽  
Pardeep Bansal ◽  
Kuldeep Thakur ◽  
Vidhu Sharma ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
High Frequency ◽  
Otoacoustic Emissions ◽  
Pure Tone Audiometry ◽  
Transluminal Angioplasty ◽  
Prospective Clinical Study ◽  
Thyroid Function Tests ◽  
Distortion Product ◽  
Serum T3

<p class="abstract"><strong>Background:</strong> The objective of the study was to assess the hearing impairment in patients of hypothyroidism.</p><p class="abstract"><strong>Methods:</strong> A prospective clinical study has done at a referral centre included 33 diagnosed patients of hypothyroidism in the age group of 15 to 65 years, fulfilling the inclusion and exclusion criteria who attended the outpatient department. The diagnosis of hypothyroidism was confirmed by thyroid function tests i.e., serum T3, T4 and TSH levels while hearing assessment was done using tuning fork tests, pure tone audiometry, impedance audiometry and otoacoustic emissions. Hearing impairment was measured in decibels of hearing loss, or dB HL and graded as mild, moderate, moderately severe, severe, or profound.  </p><p class="abstract"><strong>Results:</strong> Percutaneous transluminal angioplasty showed 42.7% of the patients had high frequency sensorineural type of hearing loss. The air bone gap was not significant. On tympanometry, all the patients had type A graph and distortion product otoacoustic emissionss in all patients were pass.</p><p class="abstract"><strong>Conclusions:</strong> Acquired hypothyroidism affects primarily high frequency hearing thresholds causing high frequency sensorineural hearing loss, with little or no effect on lower frequencies.</p>

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.

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.

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>

Otoacoustic emissions in young adults with a history of otitis media

2005 ◽  
Vol 120 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Sule Yilmaz ◽  
Ahmet Rifat Karasalihoglu ◽  
Abdullah Tas ◽  
Recep Yagiz ◽  
Memduha Tas
Keyword(s):  
Young Adults ◽  
Otitis Media ◽  
Otoacoustic Emissions ◽  
Pure Tone Audiometry ◽  
Otoacoustic Emission ◽  
Distortion Product Otoacoustic Emission ◽  
Distortion Product ◽  
The Third ◽  
Hearing Thresholds ◽  
History Of

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.

scholarly journals Cochlear function in patients with chronic kidney disease

2013 ◽  
Vol 60 (1) ◽  
Author(s):  
Samantha Marlanie Govender ◽  
Cyril Devdas Govender ◽  
Glenda Matthews
Keyword(s):  
Chronic Kidney Disease ◽  
Hearing Loss ◽  
Kidney Disease ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Drug Intake ◽  
Cochlear Function ◽  
Distortion Product ◽  
Cochlear Dysfunction

Objective: To evaluate cochlear functioning in patients (18 - 45 years old) with varying stages of chronic kidney disease (CKD). Using purposive sampling, 50 participants, 10 in each of the 5 stages of CKD, were selected and underwent pure tone audiometric testing and distortion product otoacoustic emissions (DPOAEs).Results: Significant differences (p<0.05) were found between pure tone audiometry and DPOAEs in detecting early cochlear dysfunction in the high-frequency range in stages 3 (6 000/5 000 Hz; p=0.00), 4 (6 000/5 000 Hz; p<0.03) and 5 (4 000/3 333 Hz; p<0.01, 8 000/6 667 Hz:p<0.05) with DPOAEs being more sensitive in identifying early cochlear dysfunction. Patients in stages 1 and 2 presented with normal puretone thresholds and DPOAEs, suggesting that cochlear functioning in these patients was normal. Early cochlear dysfunction, thereby indicating a subclinical hearing loss, was identified in stages 3, 4 and 5 by DPOAE testing. In addition, blood test results, drug intake and concomitant conditions were recorded and analysed which suggested a relationship between reduced cochlear functioning and increased electrolyte levels, treatment regimens and concomitant conditions.Conclusion: Participants in the later stages of CKD presented with early cochlear dysfunction, presenting with subclinical hearing loss. It was postulated that this subclinical hearing loss resulted from a combination of electrolytic, urea and creatinine imbalances, together with concomitant medical conditions and ototoxic drug intake. It was concluded that audiological monitoring be included in the management of patients with CKD and that DPOAEs be introduced as part of the test battery to monitor cochlear function in patients with varying degrees of CKD.

Sign in / Sign up

Export Citation Format

Share Document