Coronary VesselsCoronary CirculationCoronary AngiographyCoronary Artery DiseaseCoronary DiseaseCoronary Artery BypassAngioplasty, Balloon, CoronaryCoronary StenosisElectrocardiographyCoronary VasospasmDogsVasodilationHeartVasodilator AgentsVascular ResistanceMyocardial InfarctionFollow-Up StudiesPericardiumHemodynamicsCoronary RestenosisMyocardiumBlood Flow VelocityCoronary AneurysmEndothelium, VascularCoronary ThrombosisNitroglycerinAcetylcholineMyocardial IschemiaAdenosineCoronary Vessel AnomaliesStentsCollateral CirculationNitric OxideTime FactorsBlood PressureVasoconstrictionRisk FactorsCoronary OcclusionTreatment OutcomeBlood VesselsSwineModels, CardiovascularRegional Blood FlowPercutaneous Coronary InterventionVasomotor SystemAngina Pectoris, VariantCardiac CatheterizationProspective StudiesMicrocirculationPerfusionUltrasonography, InterventionalCoronary Care UnitsPapaverineHyperemiaBlood CirculationArteriesPredictive Value of TestsCalcinosisomega-N-MethylarginineMyocardial ContractionTomography, X-Ray ComputedBiological MarkersMuscle, Smooth, VascularHeart RateAngina PectorisNitric Oxide SynthaseNitroprussideVasa VasorumArteriovenous AnastomosisOxygen ConsumptionMyocardial ReperfusionMyocardial RevascularizationCoronary Artery Bypass, Off-PumpHeart VentriclesExtracorporeal CirculationAngina, UnstableNitroarginineNG-Nitroarginine Methyl EsterMagnetic Resonance AngiographyDose-Response Relationship, DrugBradykininSensitivity and SpecificityRetrospective StudiesSeverity of Illness IndexExercise TestVentricular Function, LeftEchocardiographyPlatelet Aggregation InhibitorsAnalysis of VariancePropranololRisk AssessmentVasoconstrictor AgentsMyocardial Reperfusion InjuryLymphatic VesselsAortaNeovascularization, PhysiologicComplianceContrast MediaInfusions, Intra-ArterialReproducibility of Results