MyocardiumHeartMyocytes, CardiacMyocardial ContractionMyocarditisCardiac OutputMyocardial InfarctionMyocardial IschemiaMyocardial Reperfusion InjuryCardiomyopathiesArrhythmias, CardiacHeart VentriclesCardiomyopathy, DilatedCoronary CirculationVentricular Function, LeftDogsCardiac Surgical ProceduresDeath, Sudden, CardiacHeart DiseasesEchocardiographyMyocardial ReperfusionTime FactorsCreatine KinaseHeart FailureVentricular FunctionCardiac Pacing, ArtificialHeart, ArtificialEdema, CardiacVentricular RemodelingEndocardiumPericardiumHemodynamicsCardiotonic AgentsElectrocardiographyCoronary VesselsDisease Models, AnimalTroponin IFibrosisRats, Sprague-DawleyMagnetic Resonance Imaging, CineHeart RateMitochondria, HeartCardiomegalyCardiac TamponadeRats, WistarPerfusionHeart AtriaHeart TransplantationModels, CardiovascularTissue EngineeringVentricular Dysfunction, LeftStroke VolumeSwineCardiac CatheterizationCardiomyopathy, HypertrophicRabbitsCoronary DiseaseMuscle CellsEnterovirus B, HumanHeart ArrestDiastoleVentricular PressureSarcolemmaHeart Conduction SystemBlood PressureImmunohistochemistryPapillary MusclesEchocardiography, DopplerModels, AnimalMyoblasts, CardiacCells, CulturedBiological MarkersHypertrophy, Left VentricularCardiac MyosinsCardiac Imaging TechniquesOxygen ConsumptionRNA, MessengerCardiac GlycosidesMagnetic Resonance ImagingIschemic Preconditioning, MyocardialTreatment OutcomeEnterovirusMice, Inbred C57BLProspective StudiesIsoproterenolSystoleRegenerationCardiac Output, LowCalciumOrganotechnetium CompoundsOut-of-Hospital Cardiac ArrestPredictive Value of TestsOxygenNecrosisCardiac VolumeStem Cell TransplantationTissue ScaffoldsAnimals, NewbornReproducibility of ResultsContrast Media