Pulmonary Gas ExchangeVentilation-Perfusion RatioNoble GasesPulmonary VentilationLungRespiration, ArtificialBlood Gas AnalysisRespirationCarbon DioxideOxygenRespiratory MechanicsArrhythmia, SinusPulmonary CirculationTidal VolumePulmonary Diffusing CapacityPartial PressureRespiratory Dead SpaceOxygen ConsumptionRespiratory Function TestsGasesPulmonary EdemaSmoke Inhalation InjuryPositive-Pressure RespirationLung DiseasesPhysical ExertionLung Volume MeasurementsRespiratory Distress Syndrome, AdultHyperventilationVentilationAnoxiaExtravascular Lung WaterOne-Lung VentilationHepatopulmonary SyndromeCardiac OutputHemodynamicsExercise TestAlligators and CrocodilesThoracic Surgical ProceduresHeliumPulmonary AlveoliExerciseHypoventilationIntubation, IntratrachealBicyclingVital CapacityHigh-Frequency VentilationXenonTurtlesSpirometryTechnetium Tc 99m PentetateHypergravityRana catesbeianaTomographyHeart RateMetamorphosis, BiologicalIntermittent Positive-Pressure VentilationForced Expiratory VolumeDogsXenon RadioisotopesRespiratory TransportSupine PositionLactic AcidLung InjuryHigh-Frequency Jet VentilationInhalationVentilators, MechanicalVentilator WeaningTime FactorsNoninvasive VentilationElectric ImpedanceLung NeoplasmsAcute Lung InjuryNeonLung ComplianceLarvaWork of BreathingBrain StemVentilator-Induced Lung InjuryHypercapniaAir PressureLung TransplantationWater Loss, InsensiblePlant TranspirationRespiratory Physiological PhenomenaModels, BiologicalFluorocarbonsLiquid VentilationCarcinoma, Non-Small-Cell LungLung Diseases, ObstructiveRespiratory Distress Syndrome, NewbornPulmonary Surfactants