Respiration, ArtificialIntermittent Positive-Pressure VentilationVentilator WeaningHigh-Frequency VentilationWork of BreathingRespiratory Distress Syndrome, NewbornInfant, Very Low Birth WeightRespiratory InsufficiencyInfant, PrematureInfant, NewbornVentilationPulmonary VentilationTidal VolumeStigmatella aurantiacaVentilators, MechanicalMandatory TestingNoninvasive VentilationRespiratory MechanicsVentilator-Induced Lung InjuryIntubation, IntratrachealIntensive Care UnitsTracheostomyRespiratory Distress Syndrome, AdultMandatory ProgramsPulmonary Gas ExchangeRespirationHigh-Frequency Jet VentilationStress, MechanicalIntensive CareCarbon DioxideCritical IllnessLung ComplianceBlood Gas AnalysisTracheotomyHypercapniaMetatarsusVentilation-Perfusion RatioLungDiaphragmOxygenAir PressureAirway ExtubationPneumonia, Ventilator-AssociatedCritical CarePartial PressureLung InjuryTime FactorsLung Volume MeasurementsAcute Lung InjuryIntensive Care Units, PediatricAPACHEPulmonary AtelectasisBarotraumaProspective StudiesRespiratory Function TestsLength of StayTreatment OutcomeVentilators, Negative-PressureHeliumMasksAirway ResistanceRespiratory Dead SpaceRetrospective StudiesProne Position