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 ph...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Thieme Revinter Publicações Ltda.
2022-10-01
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| Series: | International Archives of Otorhinolaryngology |
| Subjects: | |
| Online Access: | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0042-1748533 |
| _version_ | 1811312684729106432 |
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| author | Alessandra Spada Durante Polyana Cristiane Nascimento Katia de Almeida Thamyris Rosati Servilha Gil Junqueira Marçal Osmar Mesquita de Sousa Neto |
| author_facet | Alessandra Spada Durante Polyana Cristiane Nascimento Katia de Almeida Thamyris Rosati Servilha Gil Junqueira Marçal Osmar Mesquita de Sousa Neto |
| author_sort | Alessandra Spada Durante |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-13T10:41:11Z |
| format | Article |
| id | doaj.art-224d45ee4f394154bfcde9c99e8a7f5d |
| institution | Directory Open Access Journal |
| issn | 1809-9777 1809-4864 |
| language | English |
| last_indexed | 2024-04-13T10:41:11Z |
| publishDate | 2022-10-01 |
| publisher | Thieme Revinter Publicações Ltda. |
| record_format | Article |
| series | International Archives of Otorhinolaryngology |
| spelling | doaj.art-224d45ee4f394154bfcde9c99e8a7f5d2022-12-22T02:49:56ZengThieme Revinter Publicações Ltda.International Archives of Otorhinolaryngology1809-97771809-48642022-10-012604e730e73710.1055/s-0042-1748533Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*Alessandra Spada Durante0Polyana Cristiane Nascimento1Katia de Almeida2Thamyris Rosati Servilha3Gil Junqueira Marçal4Osmar Mesquita de Sousa Neto5Faculty of Speech-Language Pathology and Audiology, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, BrazilFaculty of Speech-Language Pathology and Audiology, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, BrazilFaculty of Speech-Language Pathology and Audiology, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, BrazilDepartment of Otorhinolaryngology, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, BrazilDepartment of Otorhinolaryngology, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, BrazilDepartment of Otorhinolaryngology, Escola de Ciências Médicas da Santa Casa de São Paulo. R. Dr. Cesário Mota Júnior, São Paulo, SP, BrazilIntroduction 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.http://www.thieme-connect.de/DOI/DOI?10.1055/s-0042-1748533middle earacoustic impedance testsotosclerosis |
| spellingShingle | Alessandra Spada Durante Polyana Cristiane Nascimento Katia de Almeida Thamyris Rosati Servilha Gil Junqueira Marçal Osmar Mesquita de Sousa Neto Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?* International Archives of Otorhinolaryngology middle ear acoustic impedance tests otosclerosis |
| 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 |
| topic | middle ear acoustic impedance tests otosclerosis |
| url | http://www.thieme-connect.de/DOI/DOI?10.1055/s-0042-1748533 |
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