## Overview False nostril (alar fold) entrapment or redundancy produces a loud fluttering or snoring noise during exercise, especially at speed. The noise originates at the nostril and can often be eliminated by manually holding the nostril open. It may limit performance. ## Causes Redundant or flaccid alar folds. Some breeds (Standardbreds, Saddlebreds) appear predisposed. Pathogenesis is not fully understood. ## Diagnosis Clinical noise that disappears when the nostril is supported, confirmed by exercising endoscopy showing alar fold collapse or vibration. ## Treatment Alar fold resection is effective in many cases when no other airway abnormalities are present. Nasal strips may help temporarily. ## Recovery and Prognosis Good after successful resection. Concurrent airway problems reduce success. ## Prevention None specific.
fluttering or snoring noise at exercise; noise loudest at the nostril; reduced performance; noise eliminated by holding the nostril open
## Overview False nostril (alar fold) entrapment or redundancy produces a loud fluttering or snoring noise during exercise, especially at speed. The noise originates at the nostril and can often be eliminated by manually holding the nostril open. It may limit performance. ## Causes Redundant or flaccid alar folds. Some breeds (Standardbreds, Saddlebreds) appear predisposed. Pathogenesis is not fully understood. ## Diagnosis Clinical noise that disappears when the nostril is supported, confirmed by exercising endoscopy showing alar fold collapse or vibration. ## Treatment Alar fold resection is effective in many cases when no other airway abnormalities are present. Nasal strips may help temporarily. ## Recovery and Prognosis Good after successful resection. Concurrent airway problems reduce success. ## Prevention None specific.
fluttering or snoring noise at exercise; noise loudest at the nostril; reduced performance; noise eliminated by holding the nostril open