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Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*

Introduction  Otosclerosis is characterized by the fixation of the stapes to the oval window, thereby impairing acoustic signal absorbance. A commonly used surgical technique for improving hearing in cases of otosclerosis is stapedotomy. However, it is unclear whether this surgery restores all the p...

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Autores principales: Durante, Alessandra Spada, Nascimento, Polyana Cristiane, Almeida, Katia de, Servilha, Thamyris Rosati, Marçal, Gil Junqueira, Neto, Osmar Mesquita de Sousa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Thieme Revinter Publicações Ltda. 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9668423/
https://www.ncbi.nlm.nih.gov/pubmed/36405486
http://dx.doi.org/10.1055/s-0042-1748533
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author Durante, Alessandra Spada
Nascimento, Polyana Cristiane
Almeida, Katia de
Servilha, Thamyris Rosati
Marçal, Gil Junqueira
Neto, Osmar Mesquita de Sousa
author_facet Durante, Alessandra Spada
Nascimento, Polyana Cristiane
Almeida, Katia de
Servilha, Thamyris Rosati
Marçal, Gil Junqueira
Neto, Osmar Mesquita de Sousa
author_sort Durante, Alessandra Spada
collection PubMed
description Introduction  Otosclerosis is characterized by the fixation of the stapes to the oval window, thereby impairing acoustic signal absorbance. A commonly used surgical technique for improving hearing in cases of otosclerosis is stapedotomy. However, it is unclear whether this surgery restores all the physical characteristics of the tympano-ossicular system. Objective  To evaluate the tympano-ossicular system in individuals with fenestral otosclerosis pre and poststapedotomy using wideband tympanometry. Method  A total of 47 individuals and 71 ears were assessed. The subjects were divided into three groups: presurgery otosclerosis; postsurgery; and a control group of normal-hearing adults. A handheld tympanometer with a wideband module (226–8,000 Hz) was used to take measurements at ambient pressure and under pressurized conditions. The level of statistical significance adopted was p ≤ 0.05. Results  Acoustic absorbance at 226 Hz was low for all groups. At frequencies in the range 630 to 5,040 Hz, each group had a characteristic absorbance curve, allowing them to be distinguished from one another. In the presurgery group, absorbance values were below normal levels, with energy absorbance below 10%. Low energy absorbance was most evident at 1,000 Hz in the presurgery group, but this was not observed in the postsurgery group. Although there was an improvement in hearing, the surgery failed to restore the tympano-ossicular system to normal. Conclusion  Wideband acoustic absorbance proved able to differentiate normal ears and otosclerotic ears pre and postsurgery, under both ambient pressure and pressurized conditions.
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spelling pubmed-96684232022-11-17 Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?* Durante, Alessandra Spada Nascimento, Polyana Cristiane Almeida, Katia de Servilha, Thamyris Rosati Marçal, Gil Junqueira Neto, Osmar Mesquita de Sousa Int Arch Otorhinolaryngol Introduction  Otosclerosis is characterized by the fixation of the stapes to the oval window, thereby impairing acoustic signal absorbance. A commonly used surgical technique for improving hearing in cases of otosclerosis is stapedotomy. However, it is unclear whether this surgery restores all the physical characteristics of the tympano-ossicular system. Objective  To evaluate the tympano-ossicular system in individuals with fenestral otosclerosis pre and poststapedotomy using wideband tympanometry. Method  A total of 47 individuals and 71 ears were assessed. The subjects were divided into three groups: presurgery otosclerosis; postsurgery; and a control group of normal-hearing adults. A handheld tympanometer with a wideband module (226–8,000 Hz) was used to take measurements at ambient pressure and under pressurized conditions. The level of statistical significance adopted was p ≤ 0.05. Results  Acoustic absorbance at 226 Hz was low for all groups. At frequencies in the range 630 to 5,040 Hz, each group had a characteristic absorbance curve, allowing them to be distinguished from one another. In the presurgery group, absorbance values were below normal levels, with energy absorbance below 10%. Low energy absorbance was most evident at 1,000 Hz in the presurgery group, but this was not observed in the postsurgery group. Although there was an improvement in hearing, the surgery failed to restore the tympano-ossicular system to normal. Conclusion  Wideband acoustic absorbance proved able to differentiate normal ears and otosclerotic ears pre and postsurgery, under both ambient pressure and pressurized conditions. Thieme Revinter Publicações Ltda. 2022-06-17 /pmc/articles/PMC9668423/ /pubmed/36405486 http://dx.doi.org/10.1055/s-0042-1748533 Text en Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ ) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.
spellingShingle Durante, Alessandra Spada
Nascimento, Polyana Cristiane
Almeida, Katia de
Servilha, Thamyris Rosati
Marçal, Gil Junqueira
Neto, Osmar Mesquita de Sousa
Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title_full Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title_fullStr Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title_full_unstemmed Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title_short Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*
title_sort wideband acoustic absorbance in otosclerosis: does stapedotomy restore normal tympanic cavity function?*
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9668423/
https://www.ncbi.nlm.nih.gov/pubmed/36405486
http://dx.doi.org/10.1055/s-0042-1748533
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