Respiration, ArtificialExtracorporeal Membrane OxygenationVentilationPulmonary VentilationOxygenHigh-Frequency VentilationTidal VolumePositive-Pressure RespirationIntermittent Positive-Pressure VentilationPulmonary Gas ExchangePartial PressureRespirationNoninvasive VentilationHigh-Frequency Jet VentilationRespiratory MechanicsVentilator WeaningCarbon DioxideOxygen ConsumptionVentilators, MechanicalRespiratory Distress Syndrome, AdultBlood Gas AnalysisVentilation-Perfusion RatioSpectroscopy, Near-InfraredIntubation, IntratrachealHypercapniaAnoxiaOximetryOxyhemoglobinsLungVentilator-Induced Lung InjuryProne PositionHyperbaric OxygenationWork of BreathingRespiratory Distress Syndrome, NewbornAir PressureOxygen Inhalation TherapyTracheostomyLung ComplianceLung Volume MeasurementsIntensive Care UnitsHeliumRespiratory Function TestsOne-Lung VentilationLaryngeal MasksVentilators, Negative-PressurePulmonary AtelectasisMaximal Voluntary VentilationHemodynamicsInfant, NewbornMasksHemoglobinsIntensive CareApneaPulmonary CirculationOxygenators, MembraneTime FactorsRespiratory Dead SpaceAcute Lung InjuryLung InjuryTracheotomyHyperventilationAirway ResistanceRespiratory RateAnesthesia, GeneralPulmonary EdemaHypoventilationCritical IllnessTreatment OutcomeProspective StudiesCerebrovascular CirculationRespiratory InsufficiencyEquipment DesignLung DiseasesFluorocarbonsRespiratory Physiological PhenomenaRespiratory MusclesFunctional Residual CapacityIntensive Care Units, PediatricAirway ObstructionDiaphragmHyperoxiaLung Diseases, ObstructiveCritical CareMagnetic Resonance ImagingIntermittent Positive-Pressure BreathingInfant, PrematureKrypton RadioisotopesPersistent Fetal Circulation SyndromeInhalationAdministration, InhalationMonitoring, PhysiologicKryptonBarotraumaPressurePulmonary SurfactantsPulmonary AlveoliMeconium Aspiration SyndromeAirway ExtubationAnesthesiaNeuromuscular Diseases