Effects of Type 2 Diabetes on Otoacoustic Emissions and the Medial Olivocochlear Reflex

Eren, Erdem; Harman, Ece; Arslanoğlu, Seçil; Önal, Kazım

doi:10.1177/0194599814527574

Cited by 10 publications

(6 citation statements)

References 23 publications

(53 reference statements)

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“…However, there was no linear correlation of the mean TEOAE amplitudes to the metabolic control or the duration of diabetes; similar to other studies. 37 We report that in the diabetic group, the latency time of wave V was significantly longer compared to the control group (5.92±0.38 ms versus 5.68±0.18 ms, p <0.001) similar to other studies. 38,39 Our study reports variations to these studies as regards to the latencies of I and III waves, which may have probably resulted due to the pathogenetic mechanism involved in the various patients of the study populations in these studies.…”

Section: Auditory Brainstem Responses (Abr)supporting

confidence: 90%

Evaluation of hearing loss in patients with type 2 diabetes mellitus

Meena

Sonkhya

2016

Int J Res Med Sci

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Section: Auditory Brainstem Responses (Abr)supporting

confidence: 90%

Evaluation of hearing loss in patients with type 2 diabetes mellitus

Meena

Sonkhya

2016

Int J Res Med Sci

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“…11 The results of study conducted by Eren et al were contradictory to present study, in which no statistically significant difference is there between DPOAE amplitude (Ldp) between 40 diabetics and 24 control group in frequencies 1, 2, 2.5, 3,4, 5, 6, 7, and 8 kHz, however small study group can be a limitation of their study. 15 Bayindir et al investigated role of glycaemic control on outer hair cell functions. 16 They found that there is no statistical difference in DPOAE function in controlled and non-controlled diabetes.…”

Section: Discussionmentioning

confidence: 99%

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

Joshi¹,

Galagali

Kanzhuly

et al. 2017

Int J Otorhinolaryngol Head Neck Surg

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Background: 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) & brainstem evoked otoacoustic emissions (BERA). Methods: 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) & 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. The data collected was analysed with suitable statistical tests were performed with a significance level of ɑ=0.1 using SPSS 2.0 software. Results: 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. Conclusions: 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.

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“…Agarwal et al 25 found absence of TEOAE on 30% of the samples, and Lerman-Garber et al 13 in just 15%, but in both studies, patients evaluated were younger diabetics (ages up to 50 years old) and the audiometric findings revealed the prevalence of mild loss, which can justify the greater number of TEOAE present, since the presence of TEOAE on most individuals correlates with the degree of loss, and may be obtained in hearing loss less than 40dB 25 . Eren et al 16 analyzed the TEOAE and DPOAE in DM patients, average age of 47 years and normal hearing, and, although it was found decreased amplitude, the difference between the DM and the control group was not statistically significant.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies indicate sensorioneural hearing loss at high frequencies 12,13 , while others have found low and medium frequencies deficit 14 . Studies involving the analysis of the OAE are also diverging to findings, while some showed reduction of amplitude of responses in diabetic patients 2,15 ; others found no significant difference between the groups with DM and the control 16 .…”

Section: Introductionmentioning

confidence: 94%

Características audiológicas de pacientes com diabetes mellitus Tipo 2

et al. 2016

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Purpose: to identify the audiological characteristics of patients with type 2 diabetes mellitus. Methods: Cross-sectional study in secondary care unit for diabetes in Fortaleza, April-July 2010. The sample comprised 152 patients with type 2 diabetes, regardless of sex, between 36 and 60 years of age. Held pure tone audiometry (PTA), transient-evoked otoacoustic emissions (TEOAE) and distortion product otoacoustic emissions (DPOAE).Results: association of age and time of diagnosis with hearing loss, and the time of diagnosis with the absence of DPOAE. It was observed sensorineural hearing loss in 63.2% of patients, which 71.9% were bilateral and 75% symmetric. Approximately 50% of hearing loss had flat configuration. TOAEs were absent in 75% of the patients and DPOAE in 78.9%. There were no otoacoustic emissions in the presence of normal PTA, on average, 32% of the patients on the right and 48% on the left. The presence of otoacoustic emissions on the occurrence of hearing loss was observed in approximately 30% of patients for TEOAE and 14% for DPOAE on the right; and 25% for TEOAE and 11% for DPOAE on the left. Conclusions: Prevalence of symmetrical bilateral sensorineural hearing loss with a flat configuration, and absence of TEOAE and DPOAE. The association analysis of the results of PTA and OAE suggests loss of outer hair cells of the cochlea or possible auditory neuropathy. These findings justify the hearing monitoring of these patients, as well as conducting specific tests to evaluate the central auditory system. Keywords: Diabetes Mellitus, Type 2; Hearing; Evaluation; Audiometry; Cochlea RESUMO Objetivo: identificar as características audiológicas de pacientes com diabetes mellitus tipo 2. Métodos: estudo transversal, realizado em unidade de atenção secundária para diabetes em Fortaleza, de abril a julho de 2010. Amostra composta por 152 pacientes diabéticos tipo 2, independente do sexo, entre 36 e 60 anos. Realizou-se audiometria tonal liminar (ATL), emissões otoacústicas evocadas por estímulo transiente (EOAT) e emissões otoacústicas evocadas-produto de distorção (EOAPD). Resultados: associação da idade e do tempo de diagnóstico com a presença de perda auditiva, e do tempo de diagnóstico com a ausência de EOAPD. Observou-se perda auditiva sensorioneural em 63,2% dos pacientes, das quais 71,9% eram bilaterais e 75% simétricas. Aproximadamente, 50% das perdas auditivas apresentaram configuração plana. As EOAT estavam ausentes em 75% dos pacientes e as EOAPD em 78,9%. Houve ausência de emissões otoacústicas na presença de ATL normal, em média, em 32% dos pacientes à direita e 48% à esquerda. Já a presença de emissões otoacústicas na ocorrência de perda auditiva foi observada em, aproximadamente, 30% dos pacientes para EOAT e 14% para EOAPD à direita; e 25% para EOAT e 11% para EOAPD à esquerda. Conclusão: predomínio de perda auditiva sensorioneural bilateral simétrica com configuração plana, e ausência de EOAT e EOAPD. A análise da associação dos resultados da ATL e das emissões otoacústicas sugere...

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Effects of Type 2 Diabetes on Otoacoustic Emissions and the Medial Olivocochlear Reflex

Abstract: Although decreased OAE amplitude levels were found in diabetic patients, there was no statistically significant difference in OAEs and MOC reflex. Additional studies are needed to evaluate the role of OAEs and MOC reflex in normal-hearing patients with diabetes.

Cited by 10 publications

References 23 publications

Evaluation of hearing loss in patients with type 2 diabetes mellitus

Evaluation of hearing loss in patients with type 2 diabetes mellitus

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

Características audiológicas de pacientes com diabetes mellitus Tipo 2

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