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Abstract(s)
A otite externa canina é uma patologia com elevada casuística em clínica de animais de companhia, o que justifica a necessidade de um conhecimento alargado e pormenorizado acerca da sua etiopatogenia. A resolução da doença só será completa se o tratamento for dirigido à etiologia primária da otite. Quando a causa não é correctamente reconhecida, o maneio médico revela-se insuficiente na erradicação dos sinais clínicos e a inflamação do canal auditivo progride ao longo do tempo, podendo estender-se até ao ouvido médio, agravando o estado clínico do animal pela presença simultânea de otite externa e média. Por conseguinte, o tratamento cirúrgico de otites está indicado quando a cronicidade e a irreversibilidade dos processos inflamatórios se instalam, e/ou na ausência de resposta ao tratamento médico de otites recorrentes. O procedimento cirúrgico requerido para a resolução da doença deve ser ponderado com base numa miríade de achados clínicos através de um exame físico completo. As técnicas cirúrgicas mais comumente utilizadas no caso de otites externas são a ressecção da parede lateral do canal auditivo (ou método de Zepp), ablação do canal auditivo vertical e ablação total do canal auditivo (TECA). Quando existe otite média concorrente com otite externa em cães, o procedimento cirúrgico mais recomendado é a conjugação da técnica TECA com a ostetomia lateral da bolha timpânica (TECA-LBO). As complicações pós-cirúrgicas relacionadas com estes procedimentos são maioritariamente ao nível neurológico e, normalmente associadas à parésia/paralisia do nervo facial. Contudo na maior parte dos casos, estas alterações são transitórias, mais frequentes em felídeos que em canídeos e mais frequentemente associadas à técnica TECA-LBO.
Canine external otitis is one of the most prevalent diseases in small animal practice, which justifies the need of a detailed knowledge of its pathogenesis. Therapeutic intervention in external otitis depends on the determination of all causative factors that have pathogenic implications. When the cause is not correctly recognized, the medical management is insufficient to eliminate the clinical signs and inflammation of the ear canal progresses over time, and may extend to the middle ear, causing otitis media simultaneous with external otitis. Therefore, surgical treatment for canine otitis is indicated when the chronic and irreversible inflammatory processes are established on the ear canal, and/or when otitis has recurred despite medical therapy. The surgical procedure required for the resolution of the disease should be chosen based on several clinical findings through a complete physical examination. The surgical techniques commonly used for this purpose are: lateral wall resection of the ear canal (also called Zepp method), vertical ear canal ablation and total ear canal ablation (TECA). When there is concurrent otitis media with external otitis in dogs, the recommended surgical procedure is the combination of TECA with lateral bulla osteotomy (TECA-LBO). Postoperative complications related to these procedures are mainly neurological complications and usually associated with facial nerve paralysis. However, in most cases these changes are transient, more common in cats than in dogs, and are more frequent in TECA-LBO technique.
Canine external otitis is one of the most prevalent diseases in small animal practice, which justifies the need of a detailed knowledge of its pathogenesis. Therapeutic intervention in external otitis depends on the determination of all causative factors that have pathogenic implications. When the cause is not correctly recognized, the medical management is insufficient to eliminate the clinical signs and inflammation of the ear canal progresses over time, and may extend to the middle ear, causing otitis media simultaneous with external otitis. Therefore, surgical treatment for canine otitis is indicated when the chronic and irreversible inflammatory processes are established on the ear canal, and/or when otitis has recurred despite medical therapy. The surgical procedure required for the resolution of the disease should be chosen based on several clinical findings through a complete physical examination. The surgical techniques commonly used for this purpose are: lateral wall resection of the ear canal (also called Zepp method), vertical ear canal ablation and total ear canal ablation (TECA). When there is concurrent otitis media with external otitis in dogs, the recommended surgical procedure is the combination of TECA with lateral bulla osteotomy (TECA-LBO). Postoperative complications related to these procedures are mainly neurological complications and usually associated with facial nerve paralysis. However, in most cases these changes are transient, more common in cats than in dogs, and are more frequent in TECA-LBO technique.
Description
Keywords
Ablação total do canal auditivo Ablação vertical do canal auditivo Cães Cirurgia Ostetotomia lateral da bolha timpânica Otite Ressecção da parede lateral do canal auditivo Dogs Lateral bulla osteotomy Lateral ear canal ressection Otitis Surgery Total ear canal ablation Vertical ear canal ablation