Respiratory Distress Syndrome, AdultRespiratory Distress Syndrome, NewbornAcute Lung InjuryRespiration, ArtificialPositive-Pressure RespirationBarotraumaTidal VolumeProne PositionPulmonary Gas ExchangeLung InjuryPulmonary SurfactantsLungHigh-Frequency VentilationRespiratory Dead SpaceExtracorporeal Membrane OxygenationPulmonary AlveoliLung ComplianceVentilator-Induced Lung InjuryBronchoalveolar Lavage FluidRespiratory MechanicsRespiratory AspirationPulmonary EdemaRespiratory InsufficiencyIntensive Care UnitsBlood Gas AnalysisInfant, NewbornAPACHEPulmonary Surfactant-Associated Protein BMultiple Organ FailureCritical CareSepsisPneumoniaOxygenIntensive CareLung DiseasesExtravascular Lung WaterFatal OutcomeVentilators, MechanicalCritical IllnessProspective StudiesInfant, PrematureRadiography, ThoracicAcute DiseaseTreatment OutcomeAdministration, InhalationSmoke Inhalation InjuryPneumothoraxLung Volume MeasurementsStress, PsychologicalEmbolism, FatPartial PressurePulmonary AtelectasisAdrenal Cortex HormonesBiological ProductsPneumonia, AspirationRespiratory Function TestsCapnographyBronchoalveolar LavageNeuromuscular Blocking AgentsTuberculosis, MiliaryInteractive Ventilatory SupportAlmitrineSeverity of Illness IndexHemodynamicsPulmonary VentilationAir PressureRetrospective StudiesSurface TensionHypercapniaIntubation, IntratrachealScrub TyphusHospital MortalityInfluenza A Virus, H1N1 SubtypeShockPulmonary CirculationRespiratory System AgentsAnoxiaOxygen Inhalation TherapyInstillation, DrugRisk FactorsFluid TherapyFetal DistressPulmonary Surfactant-Associated Protein AAcidosis, RespiratoryPatient PositioningVentilator WeaningDisease Models, AnimalInfluenza, HumanPneumonia, ViralHemoperfusionTime FactorsIntensive Care Units, PediatricRespiratory TherapyTomography, X-Ray ComputedMeconium Aspiration SyndromeFetal Organ MaturityElafinMethylguanidineCarbon DioxideNeutrophils