Coronary CirculationCoronary VesselsCoronary AngiographyCoronary Artery DiseaseAngioplasty, Balloon, CoronaryCoronary StenosisPlaque, AtheroscleroticCoronary DiseaseCoronary VasospasmDogsCoronary Artery BypassVasodilationHemodynamicsVascular ResistanceVasodilator AgentsBlood Flow VelocityHeartDental PlaqueCollateral CirculationAcetylcholineMyocardial InfarctionNitric OxideAdenosineVasomotor SystemAngina Pectoris, VariantMyocardiumBlood PressureBlood CirculationEndothelium, VascularMyocardial IschemiaCoronary AneurysmRegional Blood FlowCoronary ThrombosisPapaverineNitroglycerinVasoconstrictionHyperemiaomega-N-MethylarginineCardiac CatheterizationModels, CardiovascularMicrocirculationTime FactorsRisk FactorsSwineCoronary RestenosisStentsPerfusionArteriovenous AnastomosisCoronary OcclusionTreatment OutcomeNitroprussideHeart RateElectrocardiographyPercutaneous Coronary InterventionOxygen ConsumptionExtracorporeal CirculationUltrasonography, InterventionalNitroarginineViral Plaque AssayMyocardial ContractionBradykininAngina PectorisDose-Response Relationship, DrugNitric Oxide SynthasePropranololBiological MarkersComplianceCalcinosisCoronary Care UnitsAnalysis of VarianceAortaMyocardial ReperfusionProspective StudiesArteriesPulmonary CirculationCoronary Vessel AnomaliesInfusions, Intra-ArterialPulmonary AtresiaFollow-Up StudiesGlyburideVentricular Function, LeftOxygenMuscle, Smooth, VascularPredictive Value of TestsMyocardial Reperfusion InjuryVasoconstrictor AgentsAtherosclerosisEchocardiographyVentricular FunctionAngina, UnstableDiastoleArteriosclerosisHeart VentriclesIndomethacinCardiac OutputTomography, X-Ray ComputedCardiac Pacing, ArtificialAdrenergic beta-AntagonistsNitritesArginine