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Correlation between hearing results, CT-scan images and intraoperative findings in cholesteatoma related labyrinthine fistula

Presenting Author: Soledad Boleas-Aguirre

Published online by Cambridge University Press:  03 June 2016

Soledad Boleas-Aguirre ,
Iñigo Ruiz de Erenchun ,
Manuela Del Carmen ,
María Uzcanga ,
Pamela Salas  and
Almudena Rodríguez
Soledad Boleas-Aguirre
Affiliation:
Complejo Hospitalario de Navarra
Iñigo Ruiz de Erenchun
Affiliation:
Complejo Hospitalario de Navarra
Manuela Del Carmen
Affiliation:
Complejo Hospitalario de Navarra
María Uzcanga
Affiliation:
Complejo Hospitalario de Navarra
Pamela Salas
Affiliation:
Complejo Hospitalario de Navarra
Almudena Rodríguez
Affiliation:
Complejo Hospitalario de Navarra
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Abstract

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Type
Abstracts
Information
The Journal of Laryngology & Otology , Volume 130 , Supplement S3: Abstracts for the 10th International Conference on Cholesteatoma , May 2016 , pp. S93
Copyright
Copyright © JLO (1984) Limited 2016 

Learning Objectives: Learning objectives: In this study there was no association between fistula size on CT-scan and hearing level before cholesteatoma surgery. The type of fistulae found intraoperatively did not correspond to postoperative hearing.

Introduction: To compare audiological results before and after surgery in subjects suffering from horizontal semicircular canal (HSC) fistulae due to cholesteatoma. To assess whether there was any relationship between 1) fistulae size according to preoperative CT-scan and pre-operative bone-conduction hearing, and 2) type of fistulae found during surgery and post-operative bone-conduction hearing.

Methods: Retrospective evaluation including 21adults suffering from cholesteatoma with preoperative CT-scan images. Intervention: open mastoidectomy with identification of HSC fistulae. Outcomes: to compare bone conduction thresholds before and after surgery and, to assess for correlation between 1) fistulae size on preoperative CT scan and preoperative bone conduction hearing loss, and 2) type of fistulae identified during surgery and postoperative bone conduction hearing loss. The study protocol was approved by the Ethical Committee on Clinical Research of our institution.

Results: After surgery we detected a decline in bone conduction thresholds. We could not establish correlation between fistulae size on CT-scan and bone conduction hearing in the preoperative setting. Similarly, there was no correlation between fistulae type found during surgery and postoperative bone conduction hearing.

Conclusions: In this series of subjects presenting with HSC fistulae due to cholesteatoma, we verified an increase in hearing loss after surgery. Correlation between fistula size on CT-scan and hearing level pior to surgery was not established. There was no correlation between the type of fistulae found during surgery and postoperative bone conduction hearing.