Cardiac OutputStroke VolumeHemodynamicsThermodilutionCardiac Output, LowHeartMyocytes, CardiacVentricular Function, LeftHeart RateHeart FailureVascular ResistanceBlood PressureVentricular Dysfunction, LeftDye Dilution TechniqueCardiac Output, HighCardiac Surgical ProceduresEchocardiographyHeart VentriclesCardiography, ImpedanceMyocardial ContractionMilk EjectionHeart Function TestsArrhythmias, CardiacDogsCardiac Pacing, ArtificialCardiac CatheterizationOxygen ConsumptionDeath, Sudden, CardiacTime FactorsMyocardiumCardiac VolumeEchocardiography, DopplerHeart DiseasesElectrocardiographyCatheterization, Swan-GanzRegional Blood FlowBlood VolumePulmonary CirculationSystoleMyocardial InfarctionBlood CirculationVentricular RemodelingCardiomyopathy, DilatedExercise TestMonitoring, PhysiologicCardiomyopathiesProspective StudiesDiastoleCardiomegalyCardiotonic AgentsTreatment OutcomeGated Blood-Pool ImagingVentricular FunctionCardiac TamponadeVentricular Function, RightPhysical ExertionModels, CardiovascularCardiovascular Physiological PhenomenaOxygenBlood Flow VelocityCentral Venous PressureIndicator Dilution TechniquesPulmonary Wedge PressureCoronary CirculationReproducibility of ResultsHeart ArrestFollow-Up StudiesPulmonary ArteryVentricular PressureCarbon DioxideRadionuclide AngiographyAdrenergic beta-AntagonistsPredictive Value of TestsNatriuretic Peptide, BrainCardiac Resynchronization TherapyExercise ToleranceDobutamineMagnetic Resonance Imaging, CineMyocardial IschemiaRadionuclide VentriculographyBlood Gas AnalysisHeart TransplantationCardiovascular SystemFetal HeartNorepinephrineExerciseRespirationHeart Defects, CongenitalPulmonary Gas ExchangeCoronary Artery BypassDisease Models, AnimalPrognosisHypertension, PulmonaryCardiopulmonary BypassCardiac Imaging TechniquesRetrospective StudiesHypotensionPacemaker, ArtificialSwineHeart Atria