• Tiffany A Jagodich, BersenasAlexa M EAMEDepartment of Clinical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada., Shane W Bateman, and Carolyn L Kerr.
• Department of Clinical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
• J Vet Emerg Crit Care (San Antonio). 2020 Jul 1; 30 (4): 487-492.

BackgroundBrachycephalic airway syndrome can pose a risk of complicated recovery from anesthesia as a result of irritation to the excess pharyngeal andlaryngeal tissue present in affected dogs. High-flow nasal cannula (HFNC) oxygen therapy is a respiratory support modality that offers provision of continuous positive airway pressure via high gas flow rates. The HFNC system actively warms and humidifies inspired gases, which improves comfort and facilitates tolerance of the high flow rates in people and dogs. HFNC oxygen therapy was applied to brachycephalic dogs that developed increased work of breathing or hypoxemia in the recovery phase of anesthesia to determine if this device would be tolerable and effective for relief of upper respiratory difficulty.Key FindingsThe HFNC nasal prong interface is well suited to the brachycephalic facial structure. The application of HFNC was found to reduce dyspnea scores in patients with signs of upper airway obstruction after general anesthesia. Aerophagia and changes in PCO2 were noted.SignificanceApplication of HFNC in the recovery period may result in improved airflow during times of somnolent obstructive breathing, not unlike the use of continuous positive airway pressure therapy in sleep-disordered breathing in people.© Veterinary Emergency and Critical Care Society 2020.

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