[Changes of physiological dead space ratio and physiological shunt ratio during GOF anesthesia].
D000769:Anesthesia, Inhalation; D006221:Halothane; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen; D012119:Respiration; D012126:Respiratory Dead Space; D014692:Ventilation-Perfusion Ratio
D009609:Nitrous Oxide; D010100:Oxygen; D006221:Halothane