Airway closure: demonstration by breathing 100 percent O2 at low lung volumes and by N2 washout.
D000328:Adult; D006801:Humans; D008168:Lung / Q000502:physiology*; D008170:Lung Compliance; D008297:Male; D008722:Methods; D008875:Middle Aged; D009584:Nitrogen; D010100:Oxygen / Q000494:pharmacology*; D010991:Plethysmography; D011312:Pressure; D001261:Pulmonary Atelectasis / Q000503:physiopathology; D012119:Respiration / Q000502:physiology*
D009584:Nitrogen; D010100:Oxygen