Pathogenesis, diagnosis and treatment of Recurrent Equine Airway Obstruction.

摘要

Equine Recurrent Airway Obstruction (RAO), also known as heaves or broken wind, is one of the most common ailments of middle-aged horses. Inflammation of the airways is induced by organic dust exposure. This illness is characterized by neutrophilic inflammation, bronchospasm, excessive mucus production and pathologic changes in the bronchiolar walls. Clinical signs resolve within 3-4 weeks after the animals were placed in a new environment. Horses suffering from RAO are susceptible to allergens throughout their lives, and should, therefore, be properly managed. The most important aspect of therapy is to eliminate dust exposure, administration of corticosteroids and use of bronchodilators to improve pulmonary function..