Angina PectorisAngina, UnstableAngina Pectoris, VariantAngina, StableMyocardial InfarctionAcute Coronary SyndromeMicrovascular AnginaCoronary AngiographyElectrocardiographyPercutaneous Coronary InterventionLudwig's AnginaCoronary VasospasmSecondary Care CentersAngioplasty, Balloon, CoronaryPlatelet Aggregation InhibitorsProspective StudiesTreatment OutcomeMyocardial RevascularizationRegistriesCoronary Artery DiseaseTime FactorsRisk FactorsCoronary Artery BypassErgonovineRisk AssessmentFollow-Up StudiesHospital MortalityHemorrhageFibrinolytic AgentsCoronary DiseaseTroponin TCardiologyChi-Square DistributionMyocardial IschemiaBiological MarkersExercise TestPredictive Value of TestsFractional Flow Reserve, MyocardialRecurrencePrognosisNitroglycerinCreatine Kinase, MB FormCounterpulsationAcetanilidesPractice Guidelines as TopicIsosorbide DinitrateCoronary VesselsChest PainAnticoagulantsRetrospective StudiesSeverity of Illness IndexThrombolytic TherapyHospitalizationGuideline AdherenceMyocardial ReperfusionAtherectomy, CoronaryElectrocardiography, AmbulatoryLength of StayNatriuretic Peptide, BrainOdds RatioDouble-Blind MethodLogistic ModelsCoronary CirculationCardiovascular AgentsVasodilator AgentsKaplan-Meier EstimateAge FactorsCoronary ThrombosisAdrenergic beta-AntagonistsNicorandilCoronary StenosisUnited StatesC-Reactive ProteinCardiac CatheterizationSyndromeNifedipineCalcium Channel BlockersStentsAspirinPhysical ExertionOxyfedrineHeart RateChronic DiseaseFibrinopeptide AHirudin TherapyExercise ToleranceAngiocardiographyAcute DiseaseUltrasonography, InterventionalCollateral CirculationCreatine KinaseAtenololLaser TherapyTrimetazidineDipyridamoleAngioscopyIodobenzenesDrug Therapy, CombinationMetoprololHeart