Coronary CirculationCoronary VesselsBlood Flow VelocityRegional Blood FlowDogsCoronary AngiographyCoronary Artery DiseaseHemodynamicsAdenosineCoronary DiseaseCoronary StenosisVascular ResistanceAngioplasty, Balloon, CoronaryVasodilationHyperemiaVasodilator AgentsMyocardiumOxygen ConsumptionBlood PressureHeartPapaverineCoronary Artery BypassHeart RateMicrocirculationMyocardial IschemiaNitroglycerinMyocardial ContractionBretylium TosylateMyocardial InfarctionCoronary VasospasmMicrospheresKryptonSwineAcetylcholineNitric OxideLaser-Doppler FlowmetryCoronary ThrombosisEndothelium, VascularVasoconstrictionCerebrovascular CirculationVasomotor SystemCollateral CirculationTime FactorsPropranololEchocardiographyElectrocardiographyDiastoleDipyridamolePerfusionCardiac CatheterizationVentricular Function, LeftPurinergic P1 Receptor AntagonistsOxygenTheophyllineCoronary AneurysmPhysical ExertionModels, CardiovascularMyocardial StunningUltrasonography, DopplerInfusions, IntralesionalGlyburideMyocardial ReperfusionEchocardiography, DopplerMicrovascular Anginaomega-N-MethylarginineAminophyllineNG-Nitroarginine Methyl EsterUltrasonography, InterventionalIsofluraneMyocardial BridgingAnesthesiaVeratrineNitroarginineBradykininCardiac OutputArteriesReflexInfusions, Intra-ArterialCoronary RestenosisTreatment OutcomeAdrenergic beta-AntagonistsStentsLactatesCardiac Pacing, ArtificialPericardiumDose-Response Relationship, DrugProspective StudiesInjections, Intra-ArterialCoronary OcclusionBlood VolumePurinergic P2Y Receptor AntagonistsAutonomic Nerve BlockSystoleVeinsCardiac VolumeNitric Oxide SynthaseAngina PectorisRadioisotopesConsciousnessHeart Ventricles