Equine recurrent airway obstruction: pathogenesis, diagnosis, and patient management.

The research article explores equine recurrent airway obstruction, its causes, how to diagnose it, and how to manage affected horses. It covers a range of symptoms and recommends a combination of environmental management, bronchodilator and corticosteroid therapy for effective treatment.

Understanding Recurrent Airway Obstruction in Horses

• Equine Recurrent Airway Obstruction (RAO) is a health condition often found in older horses who spend most of their time in confined spaces.
• This ailment can manifest a range of clinical signs – mild symptoms such as exercise intolerance and occasional coughing, to more severe ones like difficulty breathing (dyspnea) even when the horse is at rest.

Disease Diagnosis

• The research suggests the use of bronchoalveolar lavage cytology, a diagnostic procedure involving the microscopic examination of cells extracted from the lungs, to diagnose this condition accurately.
• Typically, the cytology results of horses suffering from RAO display neutrophilic leukocytosis, a condition characterized by an abnormally high number of neutrophils, a type of white blood cell. The percentage of neutrophils is usually in the range of 15%-85%.
• This method is especially recommended for cases where the affliction exhibits mild to moderate symptoms.

Managing Affected Horses

• A comprehensive management approach combining environmental management and medical therapy has been proposed for effective treatment.
• As a part of this approach, horses should be kept in a more open and spacious environment while being administered bronchodilators and anti-inflammatory corticosteroids periodically.
• Such methodology offers the best prognosis for disease remission, meaning it can significantly improve the horse’s health and possibly lead to complete alleviation of symptoms.