The diffusion capacity of lung (DLCO) is decreased in all of the following conditions, EXCEPT:
DLCO decreases in conditions that thicken or destroy alveolar membrane (Interstitial lung disease, Emphysema) and cuail the pulmonary vasculature (pulmonary hypeension).DLCO is elevated in acute congestive cardiac failure, asthma, and pulmonary hemorrhage. Goodpasture's syndrome is characterized by pulmonary hemorrhage and renal involvement. Ref: Harrisons principles of internal medicine, 18th edition, Page: 2092
Interstitial lung disease
Goodpasture's syndrome
Emphysema
Primary pulmonary hypeension