Respiratory SystemRespiration, ArtificialRespiratory MechanicsPulmonary VentilationLung ComplianceVentilationDiagnostic Techniques and ProceduresSensitivity and SpecificityAirway ResistanceRespiratory Physiological PhenomenaTidal VolumeMolecular Diagnostic TechniquesPositive-Pressure RespirationDiagnostic Techniques, RadioisotopeDiagnostic Techniques, OtologicalRespirationHigh-Frequency VentilationDiagnostic Techniques, SurgicalLung Volume MeasurementsLungRespiratory System AbnormalitiesPulmonary Gas ExchangeVentilators, MechanicalAir PressureIntermittent Positive-Pressure VentilationFunctional Residual CapacityRespiratory Function TestsAzure StainsDiagnostic Techniques, UrologicalPolymerase Chain ReactionDiagnostic Techniques, Obstetrical and GynecologicalDiagnostic Techniques, Respiratory SystemRespiratory Distress Syndrome, AdultDiagnostic Tests, RoutineCarbon DioxideDiagnostic Techniques, Digestive SystemHigh-Frequency Jet VentilationNoninvasive VentilationVentilator WeaningIntubation, IntratrachealOxygenReproducibility of ResultsClinical Laboratory TechniquesAir SacsOscillometryTomography, X-Ray ComputedWork of BreathingPredictive Value of TestsProspective StudiesTime FactorsCytodiagnosisSpirometryDiagnostic Techniques, NeurologicalBronchoscopyBlood Gas AnalysisInfant, NewbornRadionuclide ImagingParasitologyVentilation-Perfusion RatioRespiratory ParalysisRespiratory Tract DiseasesRetrospective StudiesPulmonary AtelectasisRespiratory Distress Syndrome, NewbornHeliumRespiratory RateEvaluation Studies as TopicLung DiseasesBiopsy, NeedleRespiration DisordersThoraxPartial PressureOxygen ConsumptionDiagnostic Techniques, EndocrineUltrasonographyLung InjuryAirway ObstructionBiopsyRespiratory Dead SpaceTotal Lung CapacityMagnetic Resonance ImagingHypercapniaInhalationBiopsy, Fine-NeedlePressureMicroscopyRespiratory MusclesDiaphragmBacteriological TechniquesTracheaTreatment OutcomeLocusta migratoriaDiagnostic Techniques, CardiovascularLung Diseases, ObstructiveProne PositionThoracic WallFecesPlethysmography, Whole BodyEnzyme-Linked Immunosorbent AssayExpiratory Reserve Volume