The definition of missed abortion is also called overdue abortion or stillbirth. If the embryo dies and stays in the uterus, the pregnancy products are usually discharged within 1 ~ 2 months after the symptoms appear. Therefore, it is called missed abortion if the embryo has not been naturally discharged 2 months after it stops developing.
Causes of missed abortion 1, maternal factors
① Mental stress of pregnant women: excessive tension, anxiety, fear and sadness of pregnant women can easily lead to missed abortion;
(2) Genetic defects: such as chromosome abnormality, chromosome variation of one spouse, blood group incompatibility between husband and wife, etc.
3 Bad habits: such as excessive smoking, excessive drinking, excessive drinking of coffee and heroin. ;
④ Environmental factors: Frequent contact with arsenic, lead, formaldehyde, benzene, chloroprene, ethylene oxide, radiation and other chemicals.
⑤ Maternal diseases: Maternal diseases, such as abnormal reproductive organs and uterine tumors, herpes simplex virus, cytomegalovirus infection, etc.
Symptoms of missed abortion 1. Fetal development stops: If pregnant women do not feel abdominal enlargement and fetal movement in the second trimester of pregnancy, gynecological examination shows that the cervix is closed, the uterus is smaller than the pregnancy month by more than 2 months, and the texture is not soft. Never heard of fetal heart.
2, abdominal pain: after early abortion, blood in the uterine cavity began to bleed, especially blood clots stimulated uterine contraction, showing persistent lower abdominal pain. There is paroxysmal uterine contraction in the late stage of abortion, followed by placental abruption, so there is abdominal pain before vaginal bleeding.
3, bleeding: the abortion is bright red at the beginning, and it takes a long time to become dark red or brown. Ectopic pregnancy is often a small amount of red or brown; Moles are usually dark red.
4, vaginal bleeding: in the third month of pregnancy, at the beginning of abortion, villi and decidua separated, blood sinus opened, and then began to bleed. When all embryos are stripped and discharged from the uterus, the blood sinus closes and bleeding stops.
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