Predictive Factors for Concurrent Tegmen Dehiscence in Superior Canal Dehiscence Syndrome.
Otol Neurotol
; 43(4): 494-499, 2022 04 01.
Article
em En
| MEDLINE
| ID: mdl-35213476
ABSTRACT
OBJECTIVES:
To describe factors predictive of tegmen dehiscence in subjects with superior semicircular canal dehiscence syndrome (SCDS). STUDYDESIGN:
Retrospective case series.SETTING:
Tertiary referral center. PATIENTS Subjects with SCDS who underwent middle fossa craniotomy (MFC) for plugging/resurfacing. MAIN OUTCOMEMEASURES:
Operative and radiographic findings of tegmen dehiscences, preoperative low frequency air-bone gaps (LF-ABGs), ocular vestibular evoked myogenic potential (oVEMP) amplitudes, size of superior semicircular canal dehiscence (SCD), and history of obesity or obstructive sleep apnea (OSA).RESULTS:
One hundred thirty six patients (avg. age, 50.6âyr, 55.1% female) underwent MFC for repair of SCDS. Tegmen dehiscences were commonly found intraoperatively (tegmen tympani dehiscence [TTD] in 19.9% [11% with dural contact of ossicles], tegmen mastoideum dehiscence [TMD] in 28.7%). There were no differences in preoperative LF-ABGs and preoperative oVEMP amplitudes with respect to tegmen status. The sensitivity and specificity of computed tomography (CT) for predicting an intraoperatively confirmed TTD was 85 and 74%, respectively, and 44 and 79% for TMD. History of obesity and OSA did not differ between those with and without tegmen dehiscences. The presence of contralateral SCD and increasing cross-sectional area of SCD were both significantly associated with concurrent tegmen defects.CONCLUSIONS:
Obesity, OSA, preoperative oVEMP, and LF-ABG do not differ between those with SCD alone and those with SCD and concurrent tegmen dehiscences. Likewise, CT scans have relatively low sensitivity for identifying tegmen dehiscences. The presence of concurrent tegmen defects is more common in subjects with larger SCD cross-sectional areas and contralateral SCD.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Apneia Obstrutiva do Sono
/
Potenciais Evocados Miogênicos Vestibulares
/
Deiscência do Canal Semicircular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article