MyocardiumHeartMyocardial StunningMyocardial ContractionMyocardial IschemiaHeart VentriclesMyocardial InfarctionCoronary CirculationDogsMyocardial Reperfusion InjuryMyocytes, CardiacMyocardial ReperfusionCardiotonic AgentsTime FactorsCardiomyopathiesVentricular RemodelingVentricular Function, LeftPericardiumVentricular FunctionHemodynamicsTissue SurvivalEchocardiographyCoronary VesselsCardiomegalyCoronary DiseaseSwineCalciumHeart AtriaDisease Models, AnimalRats, Sprague-DawleyCardiomyopathy, DilatedVentricular Dysfunction, LeftDobutamineTomography, Emission-Computed, Single-PhotonIschemic Preconditioning, MyocardialIsolated Noncompaction of the Ventricular MyocardiumKineticsHeart FailurePerfusionMyocarditisRabbitsRats, WistarIodobenzenesThallium RadioisotopesHeart Conduction SystemMitochondria, HeartElectrocardiographyTomography, Emission-ComputedCreatine KinaseOrganotechnetium CompoundsDose-Response Relationship, DrugCells, CulturedModels, CardiovascularFibrosisContrast MediaMagnetic Resonance Imaging, CineMyofibrilsRadiopharmaceuticalsSarcolemmaMagnetic Resonance ImagingTechnetium Tc 99m SestamibiHeart RateArrhythmias, CardiacFetal HeartSystoleRNA, MessengerCollateral CirculationGadolinium DTPAHeart Function TestsStroke VolumeImmunohistochemistryTroponin IMyocardial RevascularizationPosterior Leukoencephalopathy SyndromeThalliumEdema, CardiacNecrosisAdenosine TriphosphateSignal TransductionThiadiazinesHydrogen-Ion ConcentrationDiastoleAction PotentialsCardiac MyosinsMice, TransgenicSwine, MiniatureEndomyocardial FibrosisOxygen ConsumptionMyoblasts, CardiacMicrospheresNitrogen RadioisotopesAdrenergic beta-AgonistsNeovascularization, PhysiologicConnexin 43Sarcoplasmic ReticulumAdenosineGuinea PigsHeart Arrest, InducedReceptors, Adrenergic, betaVentricular Pressure