Evaluation of the Efficacy of Pirfenidone in Progressive Chronic Hypersensitivity Pneumonitis

This study aims to evaluate the efficacy of pirfenidone in chronic hypersensitivity pneumonitis. This study included 40 adult patients (≥ 18 years) with a diagnosis of chronic progressive hypersensitivity pneumonitis. The included patients were divided into 2 groups 20 patients in each one. Group 1: will receive pirfenidone in addition to the conventional treatment Group 2: will be maintained on conventional treatment. Forced vital capacity (FVC),6 minutes walking test(6MWT), oxygen tension in the arterial blood (PaO2), and St. George\'s Respiratory Questionnaire (SGRQ ) were measured before and after 6 months of a pirfenidone treatment trial. Results