Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | International Archives of Otorhinolaryngology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642022000100046 |
Resumo: | Abstract Introduction Tinnitus is the perception of sound in the absence of external sound stimulation. There is a general agreement that it is a direct consequence of irreversible and permanent cochlear damage. Objectives The present work is designed to study the distortion product otoacoustic emissions (DPOAEs) in tinnitus patients with normal hearing in comparison with normal hearing control and to study any possible correlation between DPOAEs recording and patients’ complaints. Methods The present study included 80 subjects divided into 2 groups: Control group: consisted of 30 normal-hearing adults not complaining of tinnitus and Study group: consisted of 50 normal-hearing adults complaining of tinnitus. The methodology includes full audiological history, otoscopic examination, basic audiological evaluation, DPOAEs including both DP-gram and DPOAEs input/output functions. Results Basic audiological evaluation showed within normal hearing sensitivity in both groups, however, with significant higher hearing thresholds in tinnitus patients at all frequency ranges. The Tinnitus Handicap Inventory Questionnaire showed mean scores of 35.2 ± 16.9 in the study group. The DP-gram showed higher amplitudes in the control group when compared with tinnitus patients. The DPOAEs input-output functions at different frequencies (1, 2, 4 and 6kHz) also showed higher amplitudes at all frequencies and different input levels. The slope of the I/O function tends to be steeper in tinnitus cases. Conclusion Patients with tinnitus might have neural dysfunction at either the level of the cochlea, as shown in reduced DPOAE levels, and changes in the normal DP-I/O function recorded in the present work. |
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Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patientstinnitusotoacoustic emissionscochlear outer hair cellsAbstract Introduction Tinnitus is the perception of sound in the absence of external sound stimulation. There is a general agreement that it is a direct consequence of irreversible and permanent cochlear damage. Objectives The present work is designed to study the distortion product otoacoustic emissions (DPOAEs) in tinnitus patients with normal hearing in comparison with normal hearing control and to study any possible correlation between DPOAEs recording and patients’ complaints. Methods The present study included 80 subjects divided into 2 groups: Control group: consisted of 30 normal-hearing adults not complaining of tinnitus and Study group: consisted of 50 normal-hearing adults complaining of tinnitus. The methodology includes full audiological history, otoscopic examination, basic audiological evaluation, DPOAEs including both DP-gram and DPOAEs input/output functions. Results Basic audiological evaluation showed within normal hearing sensitivity in both groups, however, with significant higher hearing thresholds in tinnitus patients at all frequency ranges. The Tinnitus Handicap Inventory Questionnaire showed mean scores of 35.2 ± 16.9 in the study group. The DP-gram showed higher amplitudes in the control group when compared with tinnitus patients. The DPOAEs input-output functions at different frequencies (1, 2, 4 and 6kHz) also showed higher amplitudes at all frequencies and different input levels. The slope of the I/O function tends to be steeper in tinnitus cases. Conclusion Patients with tinnitus might have neural dysfunction at either the level of the cochlea, as shown in reduced DPOAE levels, and changes in the normal DP-I/O function recorded in the present work.Fundação Otorrinolaringologia2022-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642022000100046International Archives of Otorhinolaryngology v.26 n.1 2022reponame:International Archives of Otorhinolaryngologyinstname:Fundação Otorrinolaringologia (FORL)instacron:FORL10.1055/s-0040-1722248info:eu-repo/semantics/openAccessAlshabory,Hend FGabr,Takwa AKotait,Mona Aeng2022-03-10T00:00:00Zoai:scielo:S1809-48642022000100046Revistahttps://www.scielo.br/j/iao/https://old.scielo.br/oai/scielo-oai.php||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br1809-48641809-4864opendoar:2022-03-10T00:00International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL)false |
dc.title.none.fl_str_mv |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
title |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
spellingShingle |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients Alshabory,Hend F tinnitus otoacoustic emissions cochlear outer hair cells |
title_short |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
title_full |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
title_fullStr |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
title_full_unstemmed |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
title_sort |
Distortion Product Otoacoustic Emissions (DPOAEs) In Tinnitus Patients |
author |
Alshabory,Hend F |
author_facet |
Alshabory,Hend F Gabr,Takwa A Kotait,Mona A |
author_role |
author |
author2 |
Gabr,Takwa A Kotait,Mona A |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Alshabory,Hend F Gabr,Takwa A Kotait,Mona A |
dc.subject.por.fl_str_mv |
tinnitus otoacoustic emissions cochlear outer hair cells |
topic |
tinnitus otoacoustic emissions cochlear outer hair cells |
description |
Abstract Introduction Tinnitus is the perception of sound in the absence of external sound stimulation. There is a general agreement that it is a direct consequence of irreversible and permanent cochlear damage. Objectives The present work is designed to study the distortion product otoacoustic emissions (DPOAEs) in tinnitus patients with normal hearing in comparison with normal hearing control and to study any possible correlation between DPOAEs recording and patients’ complaints. Methods The present study included 80 subjects divided into 2 groups: Control group: consisted of 30 normal-hearing adults not complaining of tinnitus and Study group: consisted of 50 normal-hearing adults complaining of tinnitus. The methodology includes full audiological history, otoscopic examination, basic audiological evaluation, DPOAEs including both DP-gram and DPOAEs input/output functions. Results Basic audiological evaluation showed within normal hearing sensitivity in both groups, however, with significant higher hearing thresholds in tinnitus patients at all frequency ranges. The Tinnitus Handicap Inventory Questionnaire showed mean scores of 35.2 ± 16.9 in the study group. The DP-gram showed higher amplitudes in the control group when compared with tinnitus patients. The DPOAEs input-output functions at different frequencies (1, 2, 4 and 6kHz) also showed higher amplitudes at all frequencies and different input levels. The slope of the I/O function tends to be steeper in tinnitus cases. Conclusion Patients with tinnitus might have neural dysfunction at either the level of the cochlea, as shown in reduced DPOAE levels, and changes in the normal DP-I/O function recorded in the present work. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642022000100046 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1809-48642022000100046 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1055/s-0040-1722248 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundação Otorrinolaringologia |
publisher.none.fl_str_mv |
Fundação Otorrinolaringologia |
dc.source.none.fl_str_mv |
International Archives of Otorhinolaryngology v.26 n.1 2022 reponame:International Archives of Otorhinolaryngology instname:Fundação Otorrinolaringologia (FORL) instacron:FORL |
instname_str |
Fundação Otorrinolaringologia (FORL) |
instacron_str |
FORL |
institution |
FORL |
reponame_str |
International Archives of Otorhinolaryngology |
collection |
International Archives of Otorhinolaryngology |
repository.name.fl_str_mv |
International Archives of Otorhinolaryngology - Fundação Otorrinolaringologia (FORL) |
repository.mail.fl_str_mv |
||iaorl@iaorl.org||archives@internationalarchivesent.org||arquivos@forl.org.br |
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1754203977397829632 |