Tidal VolumeRespiration, ArtificialVentilator-Induced Lung InjuryRespiratory Distress Syndrome, AdultPositive-Pressure RespirationAcute Lung InjuryLungVentilators, MechanicalLung InjuryLung CompliancePulmonary VentilationBronchoalveolar Lavage FluidRespiratory MechanicsRespirationVentilationHigh-Frequency VentilationLung Volume MeasurementsPulmonary Gas ExchangeCarbon DioxideLung DiseasesIntermittent Positive-Pressure VentilationRespiratory Dead SpaceVentilator WeaningAir PressureHypercapniaHigh-Frequency Jet VentilationRespiratory Function TestsNoninvasive VentilationWork of BreathingIntubation, IntratrachealOxygenBlood Gas AnalysisRespiratory RateAirway ResistanceInhalationLung NeoplasmsPartial PressureBarotraumaVentilation-Perfusion RatioFunctional Residual CapacityBlood Volume