Overperfusion of poorly ventilated alveoli in patients with severe airways obstruction.
D000328:Adult; D001991:Bronchitis / Q000503:physiopathology*; D005260:Female; D006371:Helium; D006801:Humans; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D010101:Oxygen Consumption; D011650:Pulmonary Alveoli / Q000098:blood supply / Q000187:drug effects / Q000503:physiopathology*; D011652:Pulmonary Circulation; D011660:Pulmonary Heart Disease / Q000503:physiopathology*; D012129:Respiratory Function Tests; D013147:Spirometry; D014692:Ventilation-Perfusion Ratio
D006371:Helium; D007545:Isoproterenol; D010100:Oxygen