An intact bony tympanic facial canal does not protect from secondary facial paresis in adult acute otitis media

To investigate the prevalence of bony dehiscence in the tympanic facial canal in patients with acute otitis media with facial paresis compared to those without facial paresis. A retrospective case-control study was conducted on acute otitis media patients with facial paresis undergoing high-resoluti...

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Bibliographic Details
Published in:Journal of laryngology and otology 2020-05, Vol.134 (5), p.409-414
Main Authors: Meerwein, C, Pazahr, S, Stadler, T M, Nierobisch, N, Dalbert, A, Huber, A, Röösli, C
Format: Article
Language:English
Subjects:
Abscesses
Age
Antibiotics
Canals (anatomy)
Computed tomography
Dehiscence
Ear diseases
Main Articles
Medical imaging
Otitis media
Otolaryngology
Paresis
Pathogens
Patients
Standard deviation
Studies
Surgery
Temporal bone
Thrombosis
Variables
Ventilation
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Summary:To investigate the prevalence of bony dehiscence in the tympanic facial canal in patients with acute otitis media with facial paresis compared to those without facial paresis. A retrospective case-control study was conducted on acute otitis media patients with facial paresis undergoing high-resolution temporal bone computed tomography. Forty-eight patients were included (24 per group). Definitive determination of the presence of a bony dehiscence was possible in 44 out of 48 patients (91.7 per cent). Prevalence of bony dehiscence in acute otitis media patients with facial paresis was not different from that in acute otitis media patients without facial paresis (p = 0.21). Presence of a bony dehiscence was associated with a positive predictive value of 66.7 per cent in regard to development of facial paresis. However, an intact bony tympanic facial canal did not prevent facial paresis in 44.8 per cent of cases (95 per cent confidence interval = 34.6-55.6). Prevalence of bony dehiscence in acute otitis media patients with facial paresis did not differ from that in acute otitis media patients without facial paresis. An intact tympanic bony facial canal does not protect from facial paresis development.
ISSN:0022-2151
1748-5460
DOI:10.1017/S0022215120000973