Abortion——妇产科学课件.pptVIP

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Abortion Dept.of Ob/Gy of Drum Tower Hospital Huyali Definition Nature or induced expulsion of fetus from uterus before it is able to survive. ≤20 weeks from the first day of the last period or a fetus weighing 500g(developed countries) 28 weeks from the first day of the last period or a fetus weighing 1000g (our country) Classification Spontaneous Abortion Induced or Artificial Abortion Early Abortion(1-12week) and Late Abortion(12week-28week) Spontaneous Abortion The incidence: 15%-25% was recognized clinically. Near 80% occurs in first trimester. Etiology: 1.Chromosomal abnormalities of the embryo account for 50% in early spontaneous abortion: trisomy monosomy Triploidy tetraploidy aneuploidy, euploidy Etiology 2.Maternal infectious diseases, especially intrauterine infections. 3.Luteal phase defect: deficiency of progesterone 4.Environmental factors: Toxins, Radiation,and so on 5.Uterine anomaly: Myoma, Septate uterus,Unicornuate uterus, Intrauterine synechiae Etiology: 6.The couple’s genetics abnormal:gene disease, balanced translocation/carrier 7.Immunologic factors: antiphospholipid syndrome APS Types of the spontaneous abortion Threatened abortion: slight bleeding, low abdominal pain, closed cervix ,ultrasonograph shows intact pregnant sac and a living fetus The pregnancy can continued Types of the spontaneous abortion Inevitable abortion: severe bleeding, much pain, dilated cervix, rupture of membrane Pregnancy loss is unavoidable. Types of the spontaneous abortion Complete abortion: everything is expelled. Bleeding soon stops and pain disappear. Incomplete abortion: the product of pregnancy is partial expelled. cervix opening , some tissue filling the cervix,severe bleeding Have high risk in infection and shock Types of the spontaneous abortion Missed abortion: dead embryo retain in the uterus for 8 weeks. Absence of uterine growth, loss of some early pregnancy symptoms, slight bleeding, DIC Types of the spontaneous abortion R

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