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简介：ObjectivesTocomparetheshortandmid-termoutcomesincasesofpercutaneoustransluminalcoronaryangioplasty(PTCA)inpatientswithunstablevstableangina.MethodsPatientsselectedforPTCA/stentingweredividedintotwogroups,onewithstableanginapectoris(SAgroup,n=92)andonewithunstableanginapectoris(UAgroup,n=112).Theoutcomesofcoronaryangiographies(CAG),initial(30-d)successoftheprocedure,andfollow-upstatusinthetwogroupswerecompared.ResultsBaselinecharacteristicsweresimilar,althoughthepatientswithunstablesymptomsmorefemales(P<0.05),andhadahigheraverageCCSclass(P<0.05)andahigherincidenceofpostinfarctionangina(P<0.01).Thefrequencyof’complexstenosisinpatientswithunstableanginawashigherthanthatofpatientswithstableangina,33%v20%(P<0.01).Atotalof309vesselsacceptedtheprocedure;including210stentsweresuecessfullydeliveredto156patients.143and67stentswereimplantedinthe

简介：BackgroundCreatinekinase-MB(CK-MB)elevationafterpercutaneouscoronaryintervention(PCI)hasbeenassociatedwithincreasedriskformortality.Althoughmoststudieshavedefinedperiproceduralmyocardialinfarction(pMI)asanelevationinCK-MB>3×upperlimitofnormal(ULN),useofdifferentCK-MBassaysandvariationinsite-specificdefinitionsoftheULNmaylimitthevalueofsuchrelativethresholds.MethodsandResultsWeuseddatafromthemulticenterEvaluationofDrug-ElutingStentsandIschemicEvents(EVENT)registrytoexaminetheimpactofvariationsinsite-specificthresholdsforCK-MBelevationontheincidenceofpMIaswellastherelationshipbetweenabsolutepeaklevelsofCK-MBafterPCIand1-yearmortality.Thestudycohortconsistedof6347patientswhounderwentnonemergentPCIandhadnormalCK-MBatbaseline.Acrossthe59studycenters,theULNforCK-MBrangedfrom2.6to10.4ng/mL(median,5.0ng/mL),andtherewasaninverserelationshipbetweenthesite-specificULNandtheincidenceofpMI(definedasCK-MBelevation>3×ULN).AlthoughanypostprocedureelevationofCK-MBwasassociatedwithanadverseprognosis,incategoricalanalyses,onlyCK-MB≥50ng/mLwasindependentlyassociatedwithincreased1-yearmortality(hazardratio,4.71;95%confidenceinterval,2.42to9.13;P<0.001).SplineanalysisusingpeakCK-MBasacontinuousvariablesuggestedagraded,nonlinearrelationshipwith1-yearmortality,withaninflectionpointat≈30ng/mL.ConclusionsAmongunselectedpatientsundergoingPCI,thereisagradedrelationshipbetweenCK-MBelevationafterPCIand1-yearmortalitythatisparticularlystrongforlargeCK-MBelevations(>30to50ng/mL).FuturestudiesthatincludepMIasaclinicalendpointshouldconsiderusingacorelaboratorytoassessCK-MB(toensureconsistency)andraisingthethresholdfordefiningpMIabovecurrentlevels(toenhanceclinicalrelevance).

简介：BackgroundPriorrandomizedtrialshaveshownreducedbleedingwithbivalirudincomparedwithunfractionatedheparin(UFH)inpatientsundergoingpercutaneouscoronaryintervention(PCI).However,itisnotknownifthisbenefitisalsopresentwhenUFHdosesaremoretightlycontrolled(asmeasuredbyactivatedclot-tingtime,ACT).MethodsandResultsPatientsenrolledintheEVENT(EvaluationofDrug-ElutingStentsandIschemicEvents)registry,weredividedinto3groups,basedontheantithromboticdrugusedduringPCI(UFHmonotherapy,UFH+glycoproteinIIb-IIIareceptorinhibitor[GPI],orbivalirudinalone).Propensityscorematchingwasusedtoadjustformeasuredcovariates(89variables)andtocomparebivalirudinversusUFHmonotherapyandbivalirudinversusUFH+GPIgroups.TheUFHgroupswerestratifiedbasedonACTachieved(optimalACTdefinedas250-300forUFHmonotherapyand200-250whenGPIwasalsoused).Theprimarybleedingoutcomewasin-hospitalcompositebleeding,definedaseventsofaccesssitebleeding,ThrombolysisInMyocardialInfarctionmajor/minorbleeding,ortransfusion.Primary(in-hospitaldeath/myocardialinfarction)andsecondaryischemicoutcomes(death/MI/unplannedrepeatrevascularizationat12months)werealsoevaluated.Propensityscorematchingyielded3022patientsfortheUFHmonotherapyversusbivalirudincomparisonand3520patientsfortheUFH+GPIversusbivalirudincomparison.BivalirudinusewasassociatedwithnumericallylowerbleedingratesatallcategoriesofachievedACTwhencomparedwithUFH(low,optimal,highACT:2.5%versus4.7%,1.9%versus6.0%,3.1%versus4.8%,respectively)orheparin+GPIgroups(low,optimal,highACT:0.0%versus2.7%,2.7%versus5.2%,2.4%versus6.1%,respectively)andwasnotassociatedwithanystatisticallysignificantincreaseineitherprimaryorsecondaryischemicoutcomes.ConclusionsAmongunselectedpatientsundergoingPCI,bivalirudinuseduringPCIwasassociatedwithalowerriskofbleedingatall