Blood Gas AnalysisAcidosisCarbon DioxideAcidosis, LacticOxygenAcid-Base ImbalancePartial PressureGasesAcidosis, RespiratoryAcidosis, Renal TubularCapnographyPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousAcid-Base EquilibriumOximetryRespiratory InsufficiencyHepatopulmonary SyndromeRespirationRespiratory Dead SpaceHydrogen-Ion ConcentrationHypoventilationRespiratory Function TestsHypercapniaBlood Specimen CollectionMethemoglobinemiaVentilation-Perfusion RatioBicarbonatesOxygen ConsumptionAnoxiaOxyhemoglobinsRespiration, ArtificialOxygen Inhalation TherapyLungAnesthesia, GeneralPulmonary EmbolismRadiography, ThoracicExercise TestLung DiseasesProspective StudiesHemodynamicsSpirometryPulmonary Disease, Chronic ObstructivePositive-Pressure RespirationVital CapacityArteriesAcute DiseaseForced Expiratory VolumeHeart RateTime FactorsObesity Hypoventilation SyndromeSyringesBlood PressureSwineLung Diseases, ObstructiveLactic AcidRetrospective StudiesAlkalosisPulmonary VentilationTreatment OutcomeChromatography, GasPoint-of-Care SystemsCardiac OutputGas Chromatography-Mass SpectrometryDisease Models, AnimalPredictive Value of TestsNoble GasesIntensive CareSodium BicarbonateExercise ToleranceMonitoring, PhysiologicLactatesAmmonium ChlorideDiabetic KetoacidosisBreath TestsDyspneaRespiratory Distress Syndrome, AdultMELAS SyndromeGas PoisoningInfant, Newborn