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Vol. 74. Issue 1.
Pages 1-7 (January - February 2023)
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Vol. 74. Issue 1.
Pages 1-7 (January - February 2023)
Original article
Mastoid obliteration and canal wall reconstruction with posterior auricular artery (PAA) fascia-periosteum flap
Obliteración mastoidea y reconstrucción del conducto auditivo externo con un colgajo fascio-perióstico de la arteria auricular posterior (AAP)
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Ricardo Bartela,b,c,
Corresponding author
ricardobartel@hotmail.com

Corresponding author.
, Francesc Cruellasa, Xavier Gonzalez-Comptaa, Miriam Hamdana, Gabriel Hugueta, Marta Mesallesa, Enric Cisaa, Julio Noguesa
a Otolaryngology Department, Bellvitge University Hospital, University of Barcelona, Barcelona, Spain
b Otology Research Group of Young Otolaryngologists of the International Federations of Otorhinolaryngological Societies (YO-IFOS), Paris, France
c Otology Commission of the Catalan Society of Otorhinolaryngology (SCORL), Barcelona, Spain
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Abstract
Objective

Unstable cavities are defined as cavities with cerumen accumulation that need frequent cavity cleaning in the out-patient clinic, cavities that are intolerant to water due to risk of infection or that are subject to frequent infection and otorrhoea. The objective of this study is to address the problem of troublesome mastoid cavities, with the performance of secondary mastoid obliteration and canal wall reconstruction, using a novel posterior auricular artery (PAA) fascia-periosteum flap.

Materials and methods

A prospective study was designed, only secondary obliterations were included. Unstable mastoid cavities were defined as Merchant grade 2 or 3 and were included for surgery.

Results

At 12 months of follow up, a complete external auditory canal (EAC) and a self-cleaning ear were achieved in all 23 patients. Completely dry ears were achieved in 21 patients (91.3%). An air-bone gap improvement of 5dB was achieved.

Conclusion

Mastoid obliteration and EAC reconstruction are effective procedures to treat troublesome post canal wall down mastoid cavities. They improve quality of life and enable patients to overcome ear discharge. A standard EAC size enables the utilization of conventional hearing aids, it also reduces the need for constant mastoid cleaning and decreases healthcare expenses. The PAA flap seems to be an effective procedure to achieve all these features, as it is used to obliterate the mastoid and becomes a structural component of the neo-EAC.

Keywords:
Mastoid obliteration
Canal wall reconstruction
External auditory canal reconstruction
Revision tympanoplasty
Mastoidectomy
Resumen
Objetivo

Las cavidades inestables se definen como cavidades que presentan acumulación de cerumen que requieren limpieza en la consulta de manera frecuente, son cavidades intolerantes al agua por su elevado riesgo de infección o tienen frecuentes infecciones y otorrea. El objetivo de este estudio es abordar el problema de las cavidades mastoideas problemáticas con una obliteración mastoidea secundaria y reconstrucción del conducto auditivo externo (CAE) usando un colgajo fascio-perióstico de la arteria auricular posterior.

Materiales y métodos

Se diseñó y realizó un estudio prospectivo, solo se incluyeron obliteraciones secundarias. Las mastoides inestables fueron definidas según la clasificación de Merchant como grado 2 o 3 y fueron incluidas para la cirugía.

Resultados

A los 12 meses de seguimiento, se consiguió un CAE completo y autolimpiable en los 23 pacientes. Se lograron oídos completamente secos en 21 casos (91,3%). Se obtuvo una mejoría media en la brecha aire-hueso de 5dB.

Conclusión

La obliteración mastoidea y la reconstrucción del CAE son procedimientos eficaces para tratar mastoides problemáticas posmastoidectomías abiertas. Mejoran la calidad de vida de los pacientes y son efectivas para solventar la otorrea recurrente. La obtención de un CAE de tamaño estándar es importante para permitir que el paciente pueda utilizar una audioprótesis estándar, además de reducir la necesidad de limpieza de la cavidad de manera constante y la dependencia del paciente a los controles en la consulta, disminuyendo así el gasto en sanidad. El colgajo de arteria auricular posterior parece ser una herramienta útil para lograr todas estas características, y también es usado para obliterar las mastoides y se convierte en un componente estructural del neo-CAE.

Palabras clave:
Obliteración mastoidea
Reconstrucción de pared posterior
Reconstrucción del conducto auditivo externo
Timpanoplastia de revisión
Mastoidectomía.

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