Tracheal Collapse (Tracheal Paralysis) in Dogs and Cats: Symptoms, Treatment, and Prevention

1 Symptoms

Tracheal collapse is weakness of the trachea’s cartilage support, most often in small companion and brachycephalic breeds, and may be congenital or acquired. Congenital forms relate to breed — cartilage calcification, small or short-faced breeds, stenotic nares, and elongated soft palate predispose. Acquired forms follow severe bronchial obstruction, bronchitis, or bronchiolitis that fatigues the trachea; chronic breathing difficulty tires the airway; reduced gas exchange can also paralyze it; and acquired osteomalacia or severe calcium deficiency contributes.

The hallmark is a dry, intermittent, honking (‘goose-like’) cough when the animal eats, drinks, or exercises. Breathing difficulty is common. Prolonged expiration with forced breathing points to collapse at the thoracic inlet; prolonged inspiration with forced breathing points to cervical (neck) tracheal collapse. Inadequate air exchange with rising temperature can lead to heatstroke. The animal looks pained, breathes forcefully, and shows blue-tinged mucous membranes. The neck trachea feels flattened on palpation; listening reveals crackles in the trachea and a long, high-pitched tracheal sound on expiration more than inspiration.

2 Causes and Transmission

The trachea loses rigidity because its cartilage rings soften or the membrane slackens. Congenital weakness is breed-related; acquired collapse follows chronic airway disease, chronic coughing, calcium deficiency, or age-related cartilage change. Obesity and collar pressure on the neck worsen it. It is not contagious.

3 Diagnosis

Diagnosis is based on the honking cough and confirmed by imaging. Radiographs may show a flattened trachea, but the collapse is often dynamic, so fluoroscopy or endoscopy during breathing best reveals it. Your veterinarian will also assess for concurrent bronchitis or heart disease.

4 Treatment

Treatment reduces inflammation and infection, eases breathing, and calms the cough. Affected pets are kept calm, cool, and lean, and walked with a harness rather than a neck collar.

Veterinary care may include antibiotics when infection is present, bronchodilators to relax the airway, cough suppressants, and anti-inflammatory medication to reduce swelling. Animals with severe oxygen lack are given oxygen. In selected cases, inhaled (nebulized) therapy or a tracheal stent surgery supports the airway.

5 Prevention

Keep small and brachycephalic breeds at a healthy weight and use a chest harness instead of a neck collar to avoid pressure on the trachea. Control underlying bronchitis and allergies, and limit excitement and heat that provoke coughing spells.