Myocardial IschemiaIschemiaArteriesBrain IschemiaMyocardial Reperfusion InjuryCoronary DiseasePulmonary ArteryCoronary CirculationMyocardiumElectrocardiographyCoronary VesselsMyocardial InfarctionCerebral ArteriesCarotid ArteriesFemoral ArteryReperfusion InjuryExercise TestRenal ArteryAngina PectorisCoronary Artery BypassHeartMesenteric ArteriesMyocardial ReperfusionHemodynamicsDogsCoronary AngiographyBasilar ArteryTime FactorsCardiotonic AgentsIschemic Preconditioning, MyocardialIliac ArteryDisease Models, AnimalVertebral ArteryHeart RateMammary ArteriesElectrocardiography, AmbulatoryRadial ArteryRats, Sprague-DawleyBlood PressureCarotid Artery, InternalTomography, Emission-Computed, Single-PhotonSubclavian ArteryVasodilator AgentsCarotid Artery DiseasesIschemic Attack, TransientMyocardial ContractionRats, WistarMyocardial Perfusion ImagingArrhythmias, CardiacVentricular Function, LeftBrachial ArterySwineMesenteric Artery, SuperiorSplenic ArteryReperfusionInfarction, Middle Cerebral ArteryArterial Occlusive DiseasesCreatine KinaseHepatic ArteryDipyridamoleCarotid Artery, CommonCeliac ArteryRabbitsIschemic PreconditioningCoronary StenosisMiddle Cerebral ArteryMyocardial StunningThallium RadioisotopesProspective StudiesAdenosineEchocardiographyWarm IschemiaNitroglycerinVasodilationEndothelium, VascularIntraoperative ComplicationsDobutaminePerfusionOphthalmic ArteryPredictive Value of TestsChest PainRegional Blood FlowPopliteal ArteryHeart VentriclesRisk FactorsEchocardiography, StressRenal Artery ObstructionCerebrovascular CirculationMyocytes, CardiacVasoconstrictionAcute DiseaseAngiographyCoronary Artery DiseaseUmbilical ArteriesTreatment OutcomeThoracic ArteriesConstrictionNitric OxideCollateral CirculationTemporal Arteries