Pharyngeal contraction in brachycephalic breeds
Airway syndrome is a common disease in brachycephalic dog breeds. This syndrome includes stenotic nares, elongated and thickened soft palate, laryngeal collapse, and tracheal hypoplasia. Pharyngeal collapse is also commonly seen.
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Researchers evaluated pharyngeal motion using tomography during respiration in four dogs diagnosed with brachycephalic airway disease (BAS.). The scan showed laryngopharynx motion in the following order during inspiration: pharyngeal collapse, contraction, and laryngospasm.
Researchers concluded that pharyngeal contraction during inspiration appears to contribute toward the worsening of clinical respiratory signs of BAS.
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Pharyngeal Contraction Secondary to Its Collapse in Dogs With Brachycephalic Airway Syndrome