nasal septum resection due congenital thickness in foals
ressecção de septo nasal devido ao espessamento congênito em potros

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ID: 242755
2012
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Abstract
Nasal obstructions caused by nasal septal diseases are uncommon in horses and the main causes are malformations, mucosal lesions, neoplasias and trauma. The aim of this case report is to describe two cases of nasal obstruction in foals. Clinical signs were progressive with reduction of air flow bilaterally, intense respiratory noise and dyspnea. Endoscopy evaluation was not performed because, in both cases, it was not possible to introduce the probe into the nasal cavity due to bilateral stenosis. Radiographic exam confirmed nasal septum thickness. Both animals were submitted to septum resection surgery. In order to promote a better respiratory condition, tracheotomy was performed in both foals prior the surgery. The surgical technique applied was modified from DOYLE technique described previously (2005). Briefly, nasal bone trephine role was initially done in order to do osteotomy of its caudal portion. For osteotomy a modified osteotomy was used. The dorsal and ventral limits of the nasal bone were removed with a obstetric wire protected by metalical guide. After surgical recovery, in both cases, the clinical exam showed that the air flow was normal and without noise, allowing the foals to breathe normally. Tracheotomy healed by second intention. After eight months both foals breathed comfortably and they were suitable for physical activity. Histopathology evaluation did not show signs of inflammation, neoplasia, and any other histological changes, suggesting the thickness was congenital.

Obstruções nasais causadas por doenças do septo nasal são incomuns em cavalos e as principais causas são: malformações, lesões nas mucosas, neoplasias e trauma. O objetivo deste relato é descrever dois casos de obstrução nasal congênita em potros. Os sinais clínicos demonstravam redução progressiva do fluxo de ar bilateral, ruído respiratório e dispnéia intensa. Não foi possível realizar avaliação endoscópica pois em ambos os casos, não foi possível introduzir o equipamento na cavidade nasal devido à estenose bilateral. O exame radiográfico confirmou o aumento na espessura do septo nasal. Os animais foram submetidos à cirurgia de ressecção de septo. Para promover uma melhor condição respiratória a traqueostomia foi realizada nos dois potros antes da cirurgia. A técnica cirúrgica utilizada foi modificado da técnica descrita anteriormente DOYLE (2005). Inicialmente foi realizada a trepanação do osso nasal para osteotomia da porção caudal do septo, com auxilio de osteótomo modificado, sendo os limites dorsais e ventrais do septo removidos com uso de fio serra protegido por guias metálicos. Após a recuperação cirúrgica, nos dois casos, o exame clínico mostrou que o fluxo de ar estava normal e sem ruídos permitindo aos potros respirar normalmente. A traqueostomia cicatrizou por segunda intenção. Após oito meses os dois animais respiravam confortavelmente, estando aptos à atividade física. O exame histopatológico não demonstrou sinais de inflamação, neoplasia ou outro tipo de alteração histológica relacionada aos septos, sugerindo espessamento congênito.

Reference Key
wouk2012semina:nasal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Antônio Felipe Paulino de Figueiredo Wouk;Rubens Luiz Ferreira Gusso;Ivan Deconto;Peterson Triches Dornbusch;Eduarda Maria Gomes das Neves Oliveira;Renato Silva de Sousa
Journal frontiers in neuroendocrinology
Year 2012
DOI
10.5433/1679-0359.2012v33n1p357
URL
http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/7865
Keywords
Agriculture (General) ressecção de septo nasal

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