Regional hypoxia and dependent airway closure.
D001128:Argon / Q000494:pharmacology; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D008168:Lung / Q000502:physiology*; D010092:Oximetry; D010100:Oxygen / Q000097:blood / Q000494:pharmacology; D012119:Respiration; D013147:Spirometry
D001128:Argon; D010100:Oxygen