All the following are true about obstructive lung disease except: (A) Decreased FeV1, (B) Decreased MEFR, (C) Increased RV, (D) Increased diffusion capacity
Answer is D. Diffusion capacity is decreased in restrivtive lung disease.decreased in expiratory flow rate is a hallmark of obstructive lung disease. Residual volume is increased & FEV1/FVC is decresde Ref Harrison 19th edition pg 1661