Pulmonary function tests in rheumatoid arthritis

Thirty-two patients suffering from rheumatoid arthritis were examined for their lung functions using spirometry. Apart from the forced vital capacity [FVC], all other parameters [forced expiratory volume in the first second [FV1], FEVl/FVC ratio, forced expiratory flow at 25-75% of FVC [FEF 25-75%] and peak expiratory flow rate [PEFR]] decreased than their predicted values. The results showed marked obstruction in both large and small airways. It was concluded that obstructive lung disease progresses with the progress of the disease. It is recommended to test the pulmonary function as early as possible on diagnosing rheumatoid arthritis for the first time to establish a reference for subsequent tests during the course of the disease