Blood Gas AnalysisCarbon DioxideOxygenAcid-Base ImbalanceGasesPartial PressureCapnographyPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousOximetryRespiratory InsufficiencyHepatopulmonary SyndromeRespiratory Dead SpaceRespirationHypoventilationRespiratory Function TestsBlood Specimen CollectionMethemoglobinemiaVentilation-Perfusion RatioAcid-Base EquilibriumOxygen ConsumptionHypercapniaAnoxiaOxyhemoglobinsRespiration, ArtificialOxygen Inhalation TherapyHydrogen-Ion ConcentrationLungAnesthesia, GeneralPulmonary EmbolismRadiography, ThoracicExercise TestLung DiseasesSpirometryPulmonary Disease, Chronic ObstructiveProspective StudiesPositive-Pressure RespirationBicarbonatesHemodynamicsVital CapacityArteriesForced Expiratory VolumeAcute DiseaseHeart RateObesity Hypoventilation SyndromeSyringesTime FactorsBlood PressureSwineLung Diseases, ObstructiveRetrospective StudiesChromatography, GasPoint-of-Care SystemsPulmonary VentilationTreatment OutcomeNoble GasesGas Chromatography-Mass SpectrometryPredictive Value of TestsExercise ToleranceCardiac OutputMonitoring, PhysiologicDisease Models, AnimalIntensive CareBreath TestsDyspneaRespiratory Distress Syndrome, AdultLactic AcidGas Poisoning