Cardiac OutputCardiac Output, LowCardiac Surgical ProceduresHemodynamicsThermodilutionCardiopulmonary BypassMilrinoneBlood PressureHydrazonesMyocytes, CardiacAssisted CirculationStroke VolumeCardiotonic AgentsHeartHeart-Lung MachineHeart Defects, CongenitalVascular ResistanceHeart RateHeart FailurePericardiectomyIntra-Aortic Balloon PumpingPostoperative ComplicationsExtracorporeal CirculationDogsCoronary Artery BypassDye Dilution TechniqueCardiac Output, HighTreatment OutcomeTime FactorsCardiography, ImpedanceDobutamineHeart Valve ProsthesisElectrocardiographyPostoperative CareArrhythmias, CardiacPostoperative PeriodRetrospective StudiesOxygen ConsumptionRegional Blood FlowCatheterization, Swan-GanzHeart Function TestsDeath, Sudden, CardiacMyocardial ContractionPulmonary CirculationCardiac CatheterizationEchocardiographyCardiac Pacing, ArtificialBlood CirculationOxygenBlood VolumeCoronary Artery Bypass, Off-PumpLength of StayHeart VentriclesMonitoring, PhysiologicProspective StudiesMyocardiumHeart DiseasesHospital MortalityRisk FactorsCardiac TamponadeVentricular Function, LeftCardiomegalyIndicator Dilution TechniquesCardiovascular Physiological PhenomenaCentral Venous PressureInfant, NewbornPhysical ExertionCardiac VolumeFollow-Up StudiesHeart ArrestHypertension, PulmonaryCarbon DioxideMyocardial InfarctionModels, CardiovascularBlood Flow VelocityPulmonary ArteryBlood Gas AnalysisExercise TestCardiomyopathiesEchocardiography, DopplerPulmonary Wedge PressureCardiovascular SystemVentricular FunctionCoronary CirculationRespirationPulmonary Gas ExchangeVentricular Dysfunction, LeftNorepinephrineBlood Volume DeterminationFetal HeartReproducibility of ResultsHypotensionSplanchnic CirculationHeart TransplantationVentricular RemodelingMonitoring, IntraoperativePlethysmography, ImpedanceExerciseMyoblasts, CardiacRats, Sprague-Dawley