The results of the pulmonary functions tests shownbelow, the best diagnosis is: (A) Asthma, (B) Asbestosis, (C) ARDS, (D) Silicosis
Answer is A. Ans. is 'a' i.e., Asthma All expiratory parameters are reduced in the data given with timed vital capacity of 29%. FEV1/FVC is reduced in obstructive airway disease with lowering of peak expiratory flow rates. Due to air trapping in asthma the DLco may be normal or increased