Coronary CirculationAcute Coronary SyndromeCoronary VesselsCoronary AngiographyCoronary Artery DiseaseAngioplasty, Balloon, CoronaryCoronary DiseaseMyocardial InfarctionCoronary StenosisAngina, UnstableCoronary VasospasmDogsCoronary Artery BypassVasodilationHemodynamicsVasodilator AgentsVascular ResistanceCoronary ThrombosisSyndromeMyocardial IschemiaPlatelet Aggregation InhibitorsBlood Flow VelocityCollateral CirculationRisk FactorsElectrocardiographyHeartTreatment OutcomeAcute DiseaseAdenosineAngina PectorisTime FactorsAcetylcholineMyocardiumBiological MarkersPercutaneous Coronary InterventionAngina Pectoris, VariantNitric OxideCardiac CatheterizationBlood PressureCoronary AneurysmVasomotor SystemProspective StudiesStentsEndothelium, VascularBlood CirculationRegional Blood FlowChest PainPapaverineTiclopidineCoronary Care UnitsNitroglycerinMyocardial RevascularizationCoronary RestenosisMicrocirculationCoronary Occlusionomega-N-MethylarginineModels, CardiovascularHyperemiaVasoconstrictionPredictive Value of TestsHemorrhageRisk AssessmentFollow-Up StudiesSwinePlatelet Glycoprotein GPIIb-IIIa ComplexTroponin THeart RatePerfusionUltrasonography, InterventionalArteriovenous AnastomosisNitroprussideMyocardial ReperfusionPrognosisOxygen ConsumptionExtracorporeal CirculationPlaque, AtheroscleroticAspirinDose-Response Relationship, DrugTroponin INitroarginineMyocardial ContractionAnalysis of VarianceBradykininPurinergic P2Y Receptor AntagonistsAdrenergic beta-AntagonistsPropranololNitric Oxide SynthaseCreatine Kinase, MB FormRetrospective StudiesCoronary Vessel AnomaliesC-Reactive ProteinComplianceVentricular Function, LeftEchocardiographyAnticoagulantsRecurrenceArteriesPulmonary CirculationMyocardial Reperfusion InjuryCase-Control Studies