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Use of CT to compare intranasal features in brachycephalic and normocephalic dogs

M. Auger, K. Alexander, G. Beauchamp, M. Dunn

THE shortened skulls of brachycephalic dogs are associated with anatomical deformities affecting the respiratory tract that increase inspiratory air flow resistance, potentially leading to life-threatening airway obstruction.

Nasal mucosal contact points may contribute to airflow resistance and are more prevalent in brachycephalic dogs. Multiple anatomical variations of nasal contact points exist in people and in order to establish a proper therapeutic plan computed tomography imaging is often used. Furthermore, in people, nasal septal deviation is common and could contribute to symptoms of nasal obstruction; however, the significance of septal deviation in dogs is unknown.

The purpose of this study was to evaluate and compare nasal mucosal contact, septal deviation and caudal aberrant nasal turbinates in brachycephalic and normocephalic dogs using CT.

CT studies of the skull and nasal cavities of dogs without nasal disease, performed between January 2008 and March 2015, were included in the study. Dogs were divided into two groups: 18 brachycephalic dogs in group A and 32 normocephalic dogs in group B. Anatomical criteria were used to locate predetermined pairs of …

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