Myocardial IschemiaIschemiaMyocardial Reperfusion InjuryBrain IschemiaMyocytes, CardiacHeartMyocardiumElectrocardiographyCoronary CirculationArrhythmias, CardiacCoronary DiseaseMyocardial InfarctionExercise TestCardiac OutputReperfusion InjuryHemodynamicsCardiotonic AgentsMyocardial ReperfusionMyocardial ContractionAngina PectorisDogsTime FactorsHeart RateIschemic Preconditioning, MyocardialDisease Models, AnimalCoronary VesselsDeath, Sudden, CardiacElectrocardiography, AmbulatoryVentricular Function, LeftCardiac Surgical ProceduresRats, Sprague-DawleyHeart VentriclesCoronary AngiographyBlood PressureEchocardiographyCardiac Pacing, ArtificialTomography, Emission-Computed, Single-PhotonRats, WistarCreatine KinaseTroponin IMyocardial Perfusion ImagingCardiac CatheterizationReperfusionHeart DiseasesTroponin TPerfusionIschemic PreconditioningIschemic Attack, TransientCoronary Artery DiseaseCardiomegalyHeart Function TestsDipyridamoleMyocardial StunningWarm IschemiaProspective StudiesDobutamineRabbitsThallium RadioisotopesMitochondria, HeartSwineVentricular Dysfunction, LeftVentricular FibrillationAdenosineHeart ArrestIntraoperative ComplicationsVasodilator AgentsPredictive Value of TestsHeart Conduction SystemCardiomyopathiesEchocardiography, StressCardiac TamponadeCollateral CirculationHeart FailureStroke VolumeBiological MarkersAcute DiseaseMice, Inbred C57BLCardiovascular AgentsCold IschemiaRisk FactorsAnesthesiaCoronary Artery BypassChest PainPericardiumVentricular RemodelingAdrenergic beta-AntagonistsOxygen ConsumptionNitroglycerinIschemic PostconditioningCoronary StenosisLactic AcidAngina, UnstableGerbillinaeVentricular PressureSpinal Cord IschemiaModels, CardiovascularRandom AllocationFollow-Up StudiesConstrictionEndocardium