Respiratory Distress Syndrome, AdultExtracorporeal Membrane OxygenationProne PositionPositive-Pressure RespirationRespiratory Distress Syndrome, NewbornRespiration, ArtificialAcute Lung InjuryBarotraumaTidal VolumePulmonary SurfactantsSevere Acute Respiratory SyndromePulmonary Gas ExchangeLung InjuryHigh-Frequency VentilationLungRespiratory Dead SpacePulmonary AlveoliBronchoalveolar Lavage FluidLung ComplianceVentilator-Induced Lung InjuryRespiratory MechanicsAPACHERespiratory AspirationInfant, NewbornSARS VirusSyndromeIntensive Care UnitsPulmonary Surfactant-Associated Protein BPulmonary EdemaBlood Gas AnalysisPleuropneumoniaCritical CareRespiratory InsufficiencyOxygenSepsisPneumoniaInfant, PrematureIntensive CareAcute DiseaseVentilators, MechanicalLung DiseasesExtravascular Lung WaterCritical IllnessProspective StudiesFatal OutcomeBiological ProductsTreatment OutcomeAdministration, InhalationRadiography, ThoracicLung Volume MeasurementsSmoke Inhalation InjuryPartial PressurePneumothoraxAdrenal Cortex HormonesPneumonia, AspirationPulmonary AtelectasisTuberculosis, MiliaryRespiratory Function TestsNeuromuscular Blocking AgentsBronchoalveolar LavageSeverity of Illness IndexRetrospective StudiesInteractive Ventilatory SupportSurface TensionHemodynamicsCapnographyAir PressureAlmitrinePulmonary Surfactant-Associated Protein APulmonary CirculationHospital MortalityPulmonary VentilationFetal Organ MaturityEmbolism, FatScrub TyphusRespiratory System AgentsHypercapniaInfluenza A Virus, H1N1 SubtypeRisk FactorsInstillation, DrugDisease Models, AnimalFluid TherapyInfant, Premature, DiseasesShockGestational AgeAnoxiaTime FactorsBronchopulmonary DysplasiaIntubation, IntratrachealInfluenza, HumanOxygenators, MembraneFatty AlcoholsSelectinsPatient PositioningHemoperfusionRespiratory TherapyIntra-Abdominal HypertensionIntensive Care Units, PediatricTomography, X-Ray ComputedNeutrophils