Cardiac OutputMyocytes, CardiacHeartMyocardiumHemodynamicsHeart DiseasesVentricular Dysfunction, LeftCardiac Output, LowCardiomyopathiesMyocardial ContractionThermodilutionHeart FailureCardiomegalyHeart RateArrhythmias, CardiacCardiac Surgical ProceduresBlood PressureEchocardiographyStroke VolumeVentricular Function, LeftDeath, Sudden, CardiacHeart Function TestsHeart VentriclesVentricular RemodelingVascular ResistanceDisease Models, AnimalTime FactorsVentricular DysfunctionDiabetic CardiomyopathiesCardiac Pacing, ArtificialCardiac CatheterizationCardiotonic AgentsDogsCardiomyopathy, DilatedElectrocardiographyCardiac Output, HighDye Dilution TechniqueCardiography, ImpedanceOxygen ConsumptionMyocardial InfarctionCardiac TamponadeRats, Sprague-DawleyVentricular PressureFibrosisTroponin IDiastoleMice, Inbred C57BLNatriuretic Peptide, BrainSystoleMyocardial IschemiaMice, TransgenicHeart ArrestRegional Blood FlowBlood VolumeMyocardial Reperfusion InjuryEchocardiography, DopplerErectile DysfunctionFetal HeartMice, KnockoutCatheterization, Swan-GanzHypertrophy, Left VentricularCardiac VolumeCoronary CirculationPulmonary CirculationRats, WistarProspective StudiesTreatment OutcomeMitochondria, HeartHeart Defects, CongenitalBlood CirculationTroponin TModels, CardiovascularOxidative StressVentricular FunctionAtrial Natriuretic FactorMonitoring, PhysiologicOxygenCalciumBiological MarkersMyoblasts, CardiacSarcoplasmic Reticulum Calcium-Transporting ATPasesCardiac MyosinsExercise TestCells, CulturedCardiac Imaging TechniquesBlood Flow VelocityHeart TransplantationSignal TransductionIsoproterenolMyocarditisVentricular Dysfunction, RightNorepinephrineCardiac GlycosidesHypertensionOrgan SizeAdrenergic beta-AntagonistsCardiovascular Physiological PhenomenaHypotensionPerfusionDiabetes Mellitus, Experimental