Blood Gas AnalysisCarbon DioxideOxygenAcid-Base ImbalanceGasesPartial PressureCapnographyPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousOximetryRespiratory InsufficiencyMembranesHepatopulmonary SyndromeRespiratory Dead SpaceRespirationRespiratory Function TestsHypoventilationMembrane LipidsCell MembraneBlood Specimen CollectionMethemoglobinemiaAcid-Base EquilibriumVentilation-Perfusion RatioIntracellular MembranesOxygen ConsumptionHydrogen-Ion ConcentrationHypercapniaAnoxiaMembrane PotentialsOxyhemoglobinsMembranes, ArtificialRespiration, ArtificialOxygen Inhalation TherapyLungAnesthesia, GeneralPulmonary EmbolismRadiography, ThoracicBicarbonatesExercise TestLung DiseasesSpirometryProspective StudiesPulmonary Disease, Chronic ObstructiveErythrocyte MembranePositive-Pressure RespirationMembrane FluidityHemodynamicsVital CapacityArteriesTime FactorsForced Expiratory VolumeCell Membrane PermeabilityBasement MembraneAcute DiseaseHeart RateSwineObesity Hypoventilation SyndromeSyringesBlood PressureLung Diseases, ObstructiveRetrospective StudiesChromatography, GasMembrane Transport ProteinsPoint-of-Care SystemsPulmonary VentilationMembrane GlycoproteinsGas Chromatography-Mass SpectrometryTreatment OutcomeDisease Models, AnimalLipid BilayersNoble GasesPredictive Value of TestsExercise ToleranceMitochondrial MembranesCardiac OutputMonitoring, PhysiologicMicroscopy, ElectronIntensive CareProtein TransportSynaptic MembranesModels, BiologicalCell LineBreath TestsLiposomesProtein BindingDyspneaLactic AcidCalciumCell FractionationRespiratory Distress Syndrome, AdultCarrier ProteinsHemoglobinsProtein Structure, TertiaryGas Poisoning