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时间:2017-07-03
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1、UpdateonInfectiveEndocarditisLarryBaddour,MDUniversityofTennessee7/981medslides.comPathogenesisDisruptionoftheendocardiallayerasacomplicationofabnormalbloodflowassociatedwithunderlyingcardiacdefectBacterium-endotheliuminteractionwithbacterialattachmentandinvasio
2、nofendothelialcells7/982medslides.comEpidemiologyUnderlyingvalvularabnormalitypredisposingtoinfectiveendocarditisrheumaticfeveracommoncauseinthepastmitralvalveprolapsecurrentlyrepresentsthemostcommonunderlyingcardiacabnormality7/983medslides.commitralvalveprolaps
3、eriskforinfectiveednocarditisis5x-8xmitralregurgitationincreasestheriskleafletredundancywithmyxomatousdegenerationisafrequentfindingage<20,femalepredominateage>20,maleaccountsfor60%age>50,maleaccountsfor68%7/984medslides.comMitralValveProlapseandInfectiveEndoc
4、arditisMaleFemaleNumberofcasesRevInfectDis1986;8:117-1377/985medslides.comCoagulase-negativeStaphylococcicanproducenative-valveendocarditisinmitralvalveprolapseusuallysubacute,difficulttodiagnose,anddisregardedasacontaminantdelayindiagnosisandtreatmentmayaccountf
5、ortheseverecomplicationsmyocardialabscessformationvalvularinsufficiencyrequiringvalvesurgerydeath7/986medslides.comProstheticHeartValvepositivebloodcultureinhospitalizedpatientswithunderlyingprostheticvalvescanbeaharbingerofendocarditis43%patientswithnosocomialba
6、cteremiaorfungemiahadprostheticvalveinfectionaseriouscomplication7/987medslides.comIVDrugUseRecurrentPolymicrobialStaphaureusaccountsforthemajorityofcasesofendocarditistricuspidvalve,eitheraloneorincombination,usmostofteninfected7/988medslides.comPredisposingFact
7、orsPolymicrobialInfectiveEndocarditis7/989medslides.comPolymicrobialInfectiveEndocarditisclinicalfeaturesIVdruguseisthepredominantriskfactoryoungerage(mean36.5years)2/3weremaleright-sidedcardiacinvolvementin>60%streptococcimorefrequentthanS.aureus1/3ofpatientsdie
8、dmortalityrateis4xhigherforpureleft-sidesvspureright-sidedendocarditis7/9810medslides.comDiagnostic(Duke)CriteriaDefinitiveinfectiveendocarditispathologiccrite
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