[en] [en] PURPOSE: The classical surgical approach for superior semicircular canal dehiscences (SSCD) is via the extradural middle cranial fossa. This pathway is used to resurface or to plug the SSC. In this paper, we present long-term data on an alternative route: the transmastoid pathway. The predictive factors for a successful surgery are equally presented in this paper.
METHODS: Thirty reports of patients operated between September 2007 to January 2020 were analysed. SSCD was confirmed by the association of concordant complaints, audiometric data, cervical vestibular evoked myogenic potentials (cVEMP) responses and computerized tomography findings. Before and after surgery, the following factors were analysed: auditory and vestibular subjective symptoms, Tullio phenomenon, pure-tone audiometry thresholds for air and bone conduction, air-bone gap, cVEMP threshold, and computerized tomography data, for instance the size of the dehiscence.
RESULTS: The follow-up is 21 months on average. The transmastoid approach significantly improves all symptoms (although there were less probing results for the vestibular symptoms). Objectively, we can observe, a closure of the audiometric air-bone gap on the low frequencies and an improvement in the cVEMP. The only correlation that was identified was between the preoperative cVEMP results and the postoperative air conduction.
CONCLUSIONS: The originality of this study is the long postoperative follow-up. It allowed us to evaluate the symptoms in the long term and to determine a predictive factor of postoperative complication, which has not yet been described until today.The transmastoid plugging technique is safe and effective. Additional long-term data with a larger cohort are needed to confirm our results and correlation studies.
Disciplines :
Otolaryngology
Author, co-author :
Gersdorff, Guillaume ; Centre Hospitalier Universitaire de Liège - CHU > > Service d'ORL, d'audiophonologie et de chir. cervico-faciale ; Department of Oto-Rhino-Laryngology, Head and Neck Surgery, St Luc University Hospital, Brussels, Belgium. guillaume.gersdorff@student.uclouvain.be ; ENT Department, Saint-Luc Hospital, Avenue Hippocrate 10, 1200, Bruxelles, Belgium. guillaume.gersdorff@student.uclouvain.be
Blaivie, Catherine; Department of Oto-Rhino-Laryngology-Head and Neck and Skull Base Surgery, Sint Augustinus Hospital, Antwerp, Belgium
de Foer, Bert; Department of Radiology, GZA Hospitals, Antwerp, Belgium
Deggouj, Naïma; Department of Oto-Rhino-Laryngology, Head and Neck Surgery, St Luc University Hospital, Brussels, Belgium
Wyckmans, Florent; Psychological Medicine Laboratory, Université Libre de Bruxelles, Brussels, Belgium
Somers, Thomas; Department of Oto-Rhino-Laryngology-Head and Neck and Skull Base Surgery, Sint Augustinus Hospital, Antwerp, Belgium ; Department of Oto-Rhino-Laryngology, Head and Neck Surgery, St Luc University Hospital, Brussels, Belgium
Language :
English
Title :
Evaluation of the transmastoid plugging approach for superior semicircular canal dehiscences: a retrospective series of 30 ears.
Publication date :
October 2022
Journal title :
European Archives of Oto-Rhino-Laryngology
ISSN :
0937-4477
eISSN :
1434-4726
Publisher :
Springer Science and Business Media Deutschland GmbH, Germany
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