Blood Gas AnalysisEmbolism, AirBarotraumaDecompression SicknessDivingGasesCarbon DioxideOxygenAcid-Base ImbalancePartial PressurePulmonary Gas ExchangeCapnographyBlood Gas Monitoring, TranscutaneousOximetryRespiratory InsufficiencyHepatopulmonary SyndromeRespiratory Dead SpaceRespirationRespiratory Function TestsHypoventilationVentilation-Perfusion RatioBlood Specimen CollectionMethemoglobinemiaAcid-Base EquilibriumOxygen ConsumptionHypercapniaAnoxiaOxyhemoglobinsRespiration, ArtificialOxygen Inhalation TherapyHydrogen-Ion ConcentrationLungAnesthesia, GeneralPulmonary EmbolismRadiography, ThoracicChromatography, GasExercise TestLung DiseasesSpirometryPositive-Pressure RespirationPulmonary Disease, Chronic ObstructiveProspective StudiesHemodynamicsBicarbonatesGas Chromatography-Mass SpectrometryVital CapacityNoble GasesArteriesForced Expiratory VolumeAcute DiseaseHeart RateObesity Hypoventilation SyndromeSyringesGas PoisoningTime FactorsBlood PressureLung Diseases, ObstructiveSwinePulmonary VentilationRetrospective StudiesPoint-of-Care SystemsTreatment OutcomePredictive Value of TestsCardiac OutputExercise ToleranceGas, NaturalMonitoring, PhysiologicDisease Models, AnimalIntensive CareBreath TestsGas GangreneDyspnea