Blood Gas AnalysisCapillariesCarbon DioxideBlood Specimen CollectionOxygenAcid-Base ImbalanceGasesPartial PressurePulmonary Gas ExchangePulmonary Diffusing CapacityCapnographyBlood Gas Monitoring, TranscutaneousElectrophoresis, CapillaryOximetryRespirationRespiratory Function TestsOxygen ConsumptionRespiratory InsufficiencyHepatopulmonary SyndromeRespiratory Dead SpacePaperHypoventilationLungMethemoglobinemiaVentilation-Perfusion RatioAcid-Base EquilibriumMicrocirculationHypercapniaAnoxiaOxyhemoglobinsHeelPulmonary CirculationPoint-of-Care SystemsHemodynamicsRespiration, ArtificialVeinsRegional Blood FlowHydrogen-Ion ConcentrationOxygen Inhalation TherapyBlood Chemical AnalysisLaser-Doppler FlowmetryHemoglobinometryProspective StudiesAnesthesia, GeneralBlood VolumePulmonary EmbolismRadiography, ThoracicTime FactorsExercise TestRetinal VesselsLung DiseasesBlood PressureBlood Flow VelocityCapillary ActionSpirometryBicarbonatesCapillary PermeabilityPositive-Pressure RespirationPulmonary Disease, Chronic ObstructiveFingersNailsBlood-Air BarrierArteriesVital CapacityBlood GlucoseReproducibility of ResultsCarbon MonoxideBlood Glucose Self-MonitoringHemoglobinsForced Expiratory VolumeAcute DiseaseHeart RateParaguayPulmonary AlveoliBreath TestsObesity Hypoventilation Syndrome3-Hydroxybutyric AcidSyringesMicrochemistryChromatography, GasHemangioma, CapillaryNeonCapillary ResistancePredictive Value of TestsDiabetic KetoacidosisBlood Circulation TimeSwineSensitivity and SpecificityLung Diseases, ObstructiveRetrospective StudiesLung Volume MeasurementsFiltrationGas Chromatography-Mass SpectrometryInsulin Infusion SystemsInfant, NewbornHematocritDisease Models, AnimalPulmonary VentilationCapillary ElectrochromatographyTreatment Outcome