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Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus

OBJECTIVES: To evaluate the functions of cochlear structures and the distal part of auditory nerve as well as dead regions within the cochlea in individuals with normal hearing with or without tinnitus by using electrophysiological tests. MATERIALS AND METHODS: Nine individuals (ages: 21–59 years) w...

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Autores principales: Kara, Eyyup, Aydın, Kübra, Akbulut, A. Alperen, Karakol, Sare Nur, Durmaz, Serkan, Yener, H. Murat, Gözen, E. Deniz, Kara, Halide
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The European Academy of Otology and Neurotology 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7224424/
https://www.ncbi.nlm.nih.gov/pubmed/32209515
http://dx.doi.org/10.5152/iao.2020.7062
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author Kara, Eyyup
Aydın, Kübra
Akbulut, A. Alperen
Karakol, Sare Nur
Durmaz, Serkan
Yener, H. Murat
Gözen, E. Deniz
Kara, Halide
author_facet Kara, Eyyup
Aydın, Kübra
Akbulut, A. Alperen
Karakol, Sare Nur
Durmaz, Serkan
Yener, H. Murat
Gözen, E. Deniz
Kara, Halide
author_sort Kara, Eyyup
collection PubMed
description OBJECTIVES: To evaluate the functions of cochlear structures and the distal part of auditory nerve as well as dead regions within the cochlea in individuals with normal hearing with or without tinnitus by using electrophysiological tests. MATERIALS AND METHODS: Nine individuals (ages: 21–59 years) with normal hearing with tinnitus were included in the study group. Thirteen individuals (ages: 25–60 years) with normal hearing without tinnitus were included in the control group. Immitancemetric examination, pure-tone audiometry (125Hz–16kHz), speech audiometry in quiet and noise environments, transient evoked otoacoustic emissions (TEOAEs), distortion product otoacoustic emissions (DPOAEs), threshold equalizing noise (TEN test (500Hz–4kHz), and ECochG tests, Beck Depression Questionnaire, Tinnitus Handicap Questionnaire, and Visual Analog Scale were performed. RESULTS: In the study group, three patients were found to have a minimal depression and six were found to have a mild depression. In pure-tone audiometry, the threshold (6–16 kHz) in the study group was significantly higher than that of the control group at all frequencies. In the study group, lower performance scores were obtained in speech discrimination in noise in both ears. In the control group, no dead region was detected in the TEN test whereas 75% of subjects in the study group had dead regions. DPOAE and TEOAE responses between study and control group subjects were not different. In the ECochG test, subjects in the study group showed an increase in the summating potential/action potential (SP/AP) ratio in both ears. CONCLUSION: Determination of the SP/AP ratio in patients with tinnitus may be useful in diagnosing hidden hearing loss. Detection of dead regions in 75% of patients in the TEN test may indicate that inner hair cells may be responsible for tinnitus.
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spelling pubmed-72244242020-05-15 Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus Kara, Eyyup Aydın, Kübra Akbulut, A. Alperen Karakol, Sare Nur Durmaz, Serkan Yener, H. Murat Gözen, E. Deniz Kara, Halide J Int Adv Otol Original Article OBJECTIVES: To evaluate the functions of cochlear structures and the distal part of auditory nerve as well as dead regions within the cochlea in individuals with normal hearing with or without tinnitus by using electrophysiological tests. MATERIALS AND METHODS: Nine individuals (ages: 21–59 years) with normal hearing with tinnitus were included in the study group. Thirteen individuals (ages: 25–60 years) with normal hearing without tinnitus were included in the control group. Immitancemetric examination, pure-tone audiometry (125Hz–16kHz), speech audiometry in quiet and noise environments, transient evoked otoacoustic emissions (TEOAEs), distortion product otoacoustic emissions (DPOAEs), threshold equalizing noise (TEN test (500Hz–4kHz), and ECochG tests, Beck Depression Questionnaire, Tinnitus Handicap Questionnaire, and Visual Analog Scale were performed. RESULTS: In the study group, three patients were found to have a minimal depression and six were found to have a mild depression. In pure-tone audiometry, the threshold (6–16 kHz) in the study group was significantly higher than that of the control group at all frequencies. In the study group, lower performance scores were obtained in speech discrimination in noise in both ears. In the control group, no dead region was detected in the TEN test whereas 75% of subjects in the study group had dead regions. DPOAE and TEOAE responses between study and control group subjects were not different. In the ECochG test, subjects in the study group showed an increase in the summating potential/action potential (SP/AP) ratio in both ears. CONCLUSION: Determination of the SP/AP ratio in patients with tinnitus may be useful in diagnosing hidden hearing loss. Detection of dead regions in 75% of patients in the TEN test may indicate that inner hair cells may be responsible for tinnitus. The European Academy of Otology and Neurotology 2020-04 2020-03-24 /pmc/articles/PMC7224424/ /pubmed/32209515 http://dx.doi.org/10.5152/iao.2020.7062 Text en © Copyright 2020 The European Academy of Otology and Neurotology https://creativecommons.org/licenses/by-nc/4.0/Content of this journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
spellingShingle Original Article
Kara, Eyyup
Aydın, Kübra
Akbulut, A. Alperen
Karakol, Sare Nur
Durmaz, Serkan
Yener, H. Murat
Gözen, E. Deniz
Kara, Halide
Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title_full Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title_fullStr Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title_full_unstemmed Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title_short Assessment of Hidden Hearing Loss in Normal Hearing Individuals with and Without Tinnitus
title_sort assessment of hidden hearing loss in normal hearing individuals with and without tinnitus
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7224424/
https://www.ncbi.nlm.nih.gov/pubmed/32209515
http://dx.doi.org/10.5152/iao.2020.7062
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