What is false about emphysema?: (A) Decreased FEV1, (B) Decreased timed vital capacity, (C) Increased residual volume, (D) Increased diffusion capacity
Answer is D. Increased diffusion capacity is seen in: Acute congestive hea failure Polycythemia Pulmonary hemorrhage / good pasture syndrome Asthma Decreased diffusion capacity is seen in: Pulmonary fibrosis Emphysema Pulmonary hypeension