Blood Gas AnalysisCarbon DioxideOxygenAcid-Base ImbalanceGasesPartial PressureCapnographyPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousOximetryRespiratory InsufficiencyHepatopulmonary SyndromeRespiratory Dead SpaceRespirationRespiratory Function TestsHypoventilationBlood Specimen CollectionMethemoglobinemiaVentilation-Perfusion RatioAcid-Base EquilibriumOxygen ConsumptionHypercapniaAnoxiaOxyhemoglobinsRespiration, ArtificialHydrogen-Ion ConcentrationOxygen Inhalation TherapyLungAnesthesia, GeneralPulmonary EmbolismRadiography, ThoracicExercise TestLung DiseasesSpirometryProspective StudiesPulmonary Disease, Chronic ObstructiveBicarbonatesPositive-Pressure RespirationHemodynamicsVital CapacityArteriesForced Expiratory VolumeAcute DiseaseHeart RateTime FactorsObesity Hypoventilation SyndromeSyringesBlood PressureSwineLung Diseases, ObstructiveRetrospective StudiesChromatography, GasPoint-of-Care SystemsPulmonary VentilationGas Chromatography-Mass SpectrometryTreatment OutcomeNoble GasesPredictive Value of TestsDisease Models, AnimalExercise ToleranceCardiac OutputMonitoring, PhysiologicIntensive CareBreath TestsDyspneaLactic AcidRespiratory Distress Syndrome, AdultGas Poisoning