HeartHeart RateMyocardial Reperfusion InjuryMyocardiumModels, CardiovascularCardioplegic SolutionsPerfusionMyocardial IschemiaMyocardial ContractionVentricular PressureHeart FailureIschemic Preconditioning, MyocardialVentricular Function, LeftCardiotonic AgentsHeart DiseasesMyocardial ReperfusionModels, AnimalHeart TransplantationHeart Defects, CongenitalMyocardial InfarctionDisease Models, AnimalRats, WistarRats, Sprague-DawleyCoronary CirculationHemodynamicsMyocytes, CardiacRabbitsFetal HeartCreatine KinaseDogsHeart ValvesOxygen ConsumptionTime FactorsReperfusion InjuryHeart AtriaMitochondria, HeartComputer SimulationHeart VentriclesHeart BlockCoronary VesselsHeart Arrest, InducedHeart Function TestsSwineElectrocardiographyCoronary DiseaseCardiac Output, LowHeart, ArtificialHeart Failure, SystolicCardiomyopathy, DilatedCardiomegalyHeart InjuriesHeart Rate, FetalHeart SeptumRheumatic Heart DiseaseStroke VolumeCardiomyopathiesEchocardiographyHeart ArrestRisk FactorsHeart Valve ProsthesisVentricular Dysfunction, LeftAdrenergic beta-AntagonistsHeart Failure, DiastolicAmerican Heart AssociationVentricular RemodelingProspective StudiesFollow-Up StudiesAutonomic Nervous SystemCardiac Pacing, ArtificialHeart Septal DefectsHypoplastic Left Heart SyndromeHeart NeoplasmsChronic DiseaseNational Heart, Lung, and Blood Institute (U.S.)Natriuretic Peptide, BrainTreatment OutcomeExercise TestSympathetic Nervous SystemSystoleEndocardiumDiastoleIsoproterenolPropanolaminesHeart Septal Defects, VentricularBiological MarkersMyocarditisHeart-Assist DevicesCalciumElectrocardiography, AmbulatoryCardiovascular DiseasesNorepinephrinePrognosisPredictive Value of TestsCohort StudiesAnti-Arrhythmia AgentsRisk AssessmentRetrospective StudiesRNA, MessengerHypertrophy, Left VentricularHeart Valve Prosthesis Implantation