Respiration, ArtificialVentilator WeaningTidal VolumeVentilationVentilators, MechanicalPositive-Pressure RespirationPulmonary VentilationHigh-Frequency VentilationRespiratory InsufficiencyVentilator-Induced Lung InjuryIntensive Care UnitsStress, MechanicalTracheostomyIntubation, IntratrachealRespiratory Distress Syndrome, AdultIntermittent Positive-Pressure VentilationRespiratory MechanicsNoninvasive VentilationIntensive CareCritical IllnessPulmonary Gas ExchangeRespirationTracheotomyPneumonia, Ventilator-AssociatedLung ComplianceCarbon DioxideDiaphragmWork of BreathingHigh-Frequency Jet VentilationAirway ExtubationBlood Gas AnalysisCritical CareLungAPACHERespiratory Distress Syndrome, NewbornIntensive Care Units, PediatricLung InjuryHypercapniaAir PressureTime FactorsAcute Lung InjuryLength of StayOxygenPulmonary AtelectasisBarotraumaProspective StudiesLung Volume MeasurementsVentilation-Perfusion RatioPartial PressureTreatment OutcomeRespiratory Function TestsInfant, NewbornRespiratory TherapyRetrospective StudiesMechanical ProcessesProne PositionAirway ResistanceRespiratory Dead SpaceHospital MortalityVentilators, Negative-PressureLung DiseasesInteractive Ventilatory SupportPneumoniaRespiratory MusclesApneaMasksHeliumOxygen Inhalation TherapyPressureHypnotics and SedativesRespiratory Care UnitsMonitoring, PhysiologicBiomechanical PhenomenaPulmonary EdemaInhalationBronchopulmonary DysplasiaPulmonary SurfactantsPulmonary AlveoliRespiratory ParalysisNeuromuscular DiseasesLung Diseases, ObstructiveInfant, PrematureConscious SedationEquipment DesignMechanical PhenomenaFunctional Residual CapacityHemodynamicsRespiratory Physiological PhenomenaHypoventilationStatus AsthmaticusIntermittent Positive-Pressure BreathingPulmonary Disease, Chronic ObstructiveIntubationCapnographyHumidityLaryngeal MasksAcute DiseaseSuctionAnoxiaAnesthesia, General