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European Archives of Oto-Rhino-Laryngology

Published in:

28-06-2023 | Audiometry | Otology

Trans-mastoid plugging of superior semicircular canal dehiscence: long-term follow-up

Authors: Chanan Shaul, Stefan Weder, Adrian Dragovic, Jean-Marc Gerard, Robert J. S. Briggs

Published in: European Archives of Oto-Rhino-Laryngology | Issue 1/2024

Abstract

Objective

To evaluate the long-term outcomes of trans-mastoid plugging of superior semicircular canal dehiscence (SSCD), focusing on complicated cases.

Methods

In this cohort study, we included all patients who underwent trans-mastoid plugging of SSCD between 2009 and 2019. We evaluated the symptoms (autophony, sound-/pressure-induced vertigo, disequilibrium, aural fullness and pulsatile tinnitus) before and 1 year after surgery in the medical records. We systematically assessed the current symptoms 6.2 ± 3 years postoperative (range 2.2–12.3 years) using questionnaires sent by post and validated by telephone interviews. We also documented any complications and the need for further procedures. We compared pure tone and speech audiometry before and 1 year after surgery. Finally, the degree of mastoid pneumatisation and mastoid tegmen anatomy were reviewed on preoperative CT scans.

Results

We included 24 ears in 23 patients. No complications were recorded, and none required a second procedure for SSCD. Following surgery, oscillopsia and Tullio phenomena resolved in all patients. Hyperacusis, autophony, and aural fullness were also settled in all patients except one. Balance impairment persisted to some degree in 35% of patients. No deterioration over the years was reported regarding the above symptoms. On average, bone conduction pure tone average pre- and 1 year postoperative were 13.7 ± 17 and 20.5 ± 18 dB, respectively (P = 0.002). Air bone gaps were reduced from 12.7 ± 8 to 5.9 ± 6 (P = 0.001). Two patients had a significant sclerotic mastoid, three had a prominent low-lying mastoid tegmen, and two had both. Anatomy had no effect on outcome.

Conclusion

Trans-mastoid plugging of SSCD is a reliable and effective technique which achieves long-lasting symptom control, even in cases with sclerotic mastoid or low-lying mastoid tegmen.

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Title: Trans-mastoid plugging of superior semicircular canal dehiscence: long-term follow-up
Authors: Chanan Shaul
Stefan Weder
Adrian Dragovic
Jean-Marc Gerard
Robert J. S. Briggs
Publication date: 28-06-2023
Publisher: Springer Berlin Heidelberg
Keywords: Audiometry
Audiometry
Tinnitus
Published in: European Archives of Oto-Rhino-Laryngology / Issue 1/2024
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI: https://doi.org/10.1007/s00405-023-08079-6

2024 ASCO Annual Meeting

Springer Medicine

Trans-mastoid plugging of superior semicircular canal dehiscence: long-term follow-up

Abstract

Objective

Methods

Results

Conclusion

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Objective

Methods

Results

Conclusion

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