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1、AbortionDept.ofOb/GyofDrumTowerHospitalHuyaliDefinitionNatureorinducedexpulsionoffetusfromuterusbeforeitisabletosurvive.≤20weeksfromthefirstdayofthelastperiodorafetusweighing<500g(developedcountries)<28weeksfromthefirstdayofthelastperiodorafetusweighing<1000g(o
2、urcountry)ClassificationSpontaneousAbortionInducedorArtificialAbortionEarlyAbortion(1-12week)andLateAbortion(>12week-<28week)EarlyAbortion8weekembryoLateAbortionSpontaneousAbortionTheincidence:15%-25%wasrecognizedclinically.Near80%occursinfirsttrimester.Etiolog
3、y:1.Chromosomalabnormalitiesoftheembryoaccountfor50%inearlyspontaneousabortion:trisomymonosomyTriploidytetraploidyaneuploidy,euploidyEtiology2.Maternalinfectiousdiseases,especiallyintrauterineinfections.3.Lutealphasedefect:deficiencyofprogesterone4.Environmenta
4、lfactors:Toxins,Radiation,andsoon5.Uterineanomaly:Myoma,Septateuterus,Unicornuateuterus,IntrauterinesynechiaeEtiology:6.Thecouple’sgeneticsabnormal:genedisease,balancedtranslocation/carrier7.Immunologicfactors:antiphospholipidsyndromeAPSTypesofthespontaneousabo
5、rtionThreatenedabortion:slightbleeding,lowabdominalpain,closedcervix,ultrasonographshowsintactpregnantsacandalivingfetusThepregnancycancontinuedThreatenedabortionTypesofthespontaneousabortionInevitableabortion:severebleeding,muchpain,dilatedcervix,ruptureofmemb
6、ranePregnancylossisunavoidable.InevitableabortionTypesofthespontaneousabortionCompleteabortion:everythingisexpelled.Bleedingsoonstopsandpaindisappear.Incompleteabortion:theproductofpregnancyispartialexpelled.cervixopening,sometissuefillingthecervix,severebleedi
7、ngHavehighriskininfectionandshockCompleteabortionIncompleteabortionTypesofthespontaneousabortionMissedabortion:deadembryoretainintheuterusfor>8weeks.Absenceofuterinegrowth,lossofsomeearlypregnancysymptoms,slightbleeding,DICTypesofthespontaneousabortionRecurrent
8、abortion:morethantwoconsecutivespontaneousabortion,Habitualabortion:3spontaneousabortionEarlyabortion---greatlikelihoodofchromosomalabnormalityLaterabortion---maternalcause:
