Angina, UnstableAngina PectorisAngina Pectoris, VariantAngina, StableMyocardial InfarctionCoronary AngiographyAtherectomy, CoronaryCoronary DiseaseMyocardial IschemiaElectrocardiographyAngioplasty, Balloon, CoronaryMicrovascular AnginaCoronary Artery DiseaseAcute Coronary SyndromeCoronary ThrombosisMyocardial RevascularizationProspective StudiesTroponin TPlatelet Aggregation InhibitorsCoronary Artery BypassHirudin TherapyFollow-Up StudiesCoronary VesselsChest PainTreatment OutcomeRecurrenceSyndromePrognosisAspirinElectrocardiography, AmbulatoryCoronary VasospasmRisk FactorsBiological MarkersPlatelet Glycoprotein GPIIb-IIIa ComplexC-Reactive ProteinFibrinopeptide AAcute DiseaseCreatine KinaseTime FactorsHeparinLudwig's AnginaErgonovineExercise TestDouble-Blind MethodIsosorbide DinitrateEnoxaparinNadroparinPredictive Value of TestsAnticoagulantsNitroglycerinDalteparinRisk AssessmentTroponinFibrinolytic AgentsStentsCoronary Care UnitsHirudinsHemorrhageTroponin IAngioscopyCoronary StenosisDipyridamoleCreatine Kinase, MB FormThrombolytic TherapyUltrasonography, InterventionalRetrospective StudiesHospitalizationAdrenergic beta-AntagonistsCardiac CatheterizationImmunoglobulin Fab FragmentsDrug Therapy, CombinationVectorcardiographyNicorandilCardiovascular AgentsVasodilator AgentsCoronary CirculationMultivariate AnalysisCardiologyChi-Square DistributionIodobenzenesSurvival AnalysisSeverity of Illness IndexPartial Thromboplastin TimeSensitivity and SpecificityInfusions, IntravenousTiclopidineRupture, SpontaneousAntithrombinsThallium RadioisotopesProportional Hazards ModelsRegression AnalysisIncidenceCounterpulsationCoronary RestenosisAcetanilidesFibrinolysisNeopterinAntithrombin IIIRiskRegistries