Which is best for diagnosis of Hypersensitivity pneumonitis?
Hypersensitivity pneumonitis: Type IV HSR Chest Imaging - normal in Hypersensitivity pneumonitis Pulmonary function testing - Obstructive pattern Clinical prediction rule- eg Farmer's Lung Exposure to antigen Presence of precipitin Recurrence of symptoms >4-6 hrs Crackles on auscultation Weight loss Farmer lung:- Thermophilus actinomyces
Chest imaging
Pulmonary function testing
Serum precipitins
Clinical prediction rule
Pneumonia