Chronic pulmonary disease with radiographic interstitial opacity (interstitial pneumonia) in foals.

This research article focuses on chronic interstitial pneumonia found in young horses, or foals. The study addresses the diagnosis process, treatment methods, and prognosis of the disease, emphasizing the effectiveness of corticosteroid therapy in treatment.

Introduction & Purpose of the Study

• The study carried out at The Ohio State University Veterinary Teaching Hospital between 1995 and 2000 examined 12 foals aged between 3 to 9 months who were diagnosed with chronic pulmonary disease.
• The disease in question was associated with marked interstitial opacity, observable through radiographic tests.
• The primary objective of this research was to understand the characteristic features of this disease, the effectiveness of its treatment methods, and to gain insights into its prognosis.

Characteristic Features of the Disease

• The most distinctive symptoms of the disease included a history of respiratory illness that lasted between 1 to 3 months, noticeable clinical indications of respiratory disease, and a predominantly interstitial pattern apparent in thoracic radiographs.
• The researchers found that tracheobronchial aspirates from the foals did not yield a consistent pathogen, leading them to attribute these signs to chronic interstitial pneumonia.

Treatment & Prognosis

• As part of the treatment approach, foals were administered broad spectrum antimicrobial drugs along with corticosteroids.
• The research findings indicated that all 12 foals survived and were discharged from the hospital. Among the 10 available for follow-up, each one was disease-free and living up to expectation anywhere between 5 months to 5 years post-discharge.
• This showed that the disease, although chronic, indeed had a good prognosis.
• The study concluded that corticosteroid therapy could be quite useful in treating chronic interstitial pneumonia in foals.