Navegando por Palavras-chave "Cirurgia do Estribo"

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    Tomografia computadorizada para detecção de possíveis armadilhas cirúrgicas na otosclerose
    (Universidade Federal de São Paulo, 2021-12) Malpaga, Cassiano Mangini Dias [UNIFESP]; Penido, Norma de Oliveira [UNIFESP]; Monsanto, Rafael da Costa [UNIFESP]; http://lattes.cnpq.br/0432316621161415; http://lattes.cnpq.br/7060786297081212; http://lattes.cnpq.br/8394171474062770
    ABSTRACT - Computed tomography for detection of possible surgical pitfalls in otosclerosis Purpose: to identify with the use of computed tomography possible pitfalls in the temporal bone of patients with otosclerosis that the surgeon should evaluate to avoid and reduce risk in the stapedotomy surgery. Computed tomography images were correlated with histological sections of the temporal bone. Methods: two examiners evaluated computed tomography of 40 patients diagnosed with otosclerosis. In the computed tomography exams were analyzed: (1) otosclerotic focus location; (2) size of the oval window niche, provenance and dehiscence of the facial nerve; (3) stapes footplate thickness; (4) round window foci; (5) presence of a possible third labyrinth window; (6) other ossicles fixation; (7) cochlear and vestibular aqueduct changes; (8) stapedial artery persistence; (9) jugular bulb elevation and dehiscence. The patients were even submitted to clinical and audiometric examination. Results: Mainly in the localization of the otosclerotic focus and its cochlear involvement, in the demonstration of important points such as the round window foci, possible dehiscence and malformation in the optic capsule that would cause third window syndrome and in the measurement of the oval window niche, the tomography demonstrated a substantial correlation between both examiners. In the evaluations such as dehiscence and provenance of the facial nerve, other ossicles fixation, elevation of the jugular bulb, focus on vestibular e cochlear aqueduct, stapedial artery persistence and the evaluation of the stapes footplate thickness, the computed tomography had a low correlation between the examiners. Conclusion: Computed tomography proved to be an important tool in the evaluation of patients with otosclerosis, demonstrating specific points that should be evaluated prior to stapedotomy surgery. Key words: 1. Otosclerosis 2. Stapes Surgery 3. CT scan 4. Pure tone audiometry 5. Histology