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页数:26页
时间:2018-09-22
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1、7/98medslides.com1UpdateonInfectiveEndocarditisLarryBaddour,MDUniversityofTennessee7/98medslides.com2PathogenesisDisruptionoftheendocardiallayerasacomplicationofabnormalbloodflowassociatedwithunderlyingcardiacdefectBacterium-endotheliuminteractionwithbacterialattachmentandinvasionofendothelialcel
2、ls7/98medslides.com3EpidemiologyUnderlyingvalvularabnormalitypredisposingtoinfectiveendocarditisrheumaticfeveracommoncauseinthepastmitralvalveprolapsecurrentlyrepresentsthemostcommonunderlyingcardiacabnormality7/98medslides.com4mitralvalveprolapseriskforinfectiveednocarditisis5x-8xmitralregurgita
3、tionincreasestheriskleafletredundancywithmyxomatousdegenerationisafrequentfindingage<20,femalepredominateage>20,maleaccountsfor60%age>50,maleaccountsfor68%7/98medslides.com5MitralValveProlapseandInfectiveEndocarditisMaleFemaleNumberofcasesRevInfectDis1986;8:117-1377/98medslides.com6Coagulase-ne
4、gativeStaphylococcicanproducenative-valveendocarditisinmitralvalveprolapseusuallysubacute,difficulttodiagnose,anddisregardedasacontaminantdelayindiagnosisandtreatmentmayaccountfortheseverecomplicationsmyocardialabscessformationvalvularinsufficiencyrequiringvalvesurgerydeath7/98medslides.com7Prosth
5、eticHeartValvepositivebloodcultureinhospitalizedpatientswithunderlyingprostheticvalvescanbeaharbingerofendocarditis43%patientswithnosocomialbacteremiaorfungemiahadprostheticvalveinfectionaseriouscomplication7/98medslides.com8IVDrugUseRecurrentPolymicrobialStaphaureusaccountsforthemajorityofcasesof
6、endocarditistricuspidvalve,eitheraloneorincombination,usmostofteninfected7/98medslides.com9PredisposingFactorsPolymicrobialInfectiveEndocarditis7/98medslides.com10PolymicrobialInfectiveEndocarditisclinicalfeaturesIVdruguseisthepredominantriskfactoryoungerage(mean36.5years)2/3weremaleright-sidedca
7、rdiacinvolvementin>60%streptococcimorefrequentthanS.aureus1/3ofpatientsdiedmortalityrateis4xhigherforpureleft-sidesvspureright-sidedendocarditis7/98medslides.com11Diagnostic(Duke)CriteriaDefinitiveinfectiveendoca
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