Lung mechanics and physiologic shunt during spontaneous breathing in normal subjects.
D000758:Anesthesia; D006801:Humans; D008168:Lung / Q000502:physiology*; D009020:Morphine / Q000494:pharmacology*; D010100:Oxygen / Q000494:pharmacology*; D012119:Respiration / Q000502:physiology*
D009020:Morphine; D010100:Oxygen