| Texto completo | |
| Autor(es): |
Alessandra Spada Durante
[1]
;
Polyana Cristiane Nascimento
[2]
;
Katia de Almeida
[3]
;
Thamyris Rosati Servilha
[4]
;
Gil Junqueira Marçal
[5]
;
Osmar Mesquita de Sousa Neto
[6]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Santa Casa de São Paulo. Faculdade de Ciências Médicas - Brasil
[2] Santa Casa de São Paulo. Faculdade de Ciências Médicas - Brasil
[3] Santa Casa de São Paulo. Faculdade de Ciências Médicas - Brasil
[4] Irmandade da Santa Casa de Misericórdia de São Paulo. Department of Otorhinolaryngology - Brasil
[5] Irmandade da Santa Casa de Misericórdia de São Paulo. Department of Otorhinolaryngology - Brasil
[6] Santa Casa de São Paulo. Escola de Ciências Médicas. Department of Otorhinolaryngology - Brasil
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Int. Arch. Otorhinolaryngol.; v. 26, n. 4, p. 730-737, 2023-01-20. |
| Resumo | |
Abstract 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. (AU) | |
| Processo FAPESP: | 14/15810-0 - Correlação da timpanometria de banda larga com os resultados audiológicos em neonatos expostos ao fumo passivo |
| Beneficiário: | Alessandra Spada Durante |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |