Placental abruption
After 20 weeks of pregnancy or during childbirth, the placenta in the normal position is partly or completely stripped from the uterine wall before the fetus is delivered, which is called placental abruption. Placental abruption is a serious complication of late pregnancy. It has rapid onset and rapid progress. If it is not handled in time, it can endanger the life of mothers and children. The incidence rate reported in China is 4.6 ‰ ~ 21 ‰, and the incidence rate abroad is 5.1 ‰ ~ 23.3 ‰. The incidence is related to whether the placenta is carefully checked after delivery. Some mild placental abruptions may be asymptomatic before delivery, and only when the placenta is examined postpartum, blood clots on the abscission spot are found. Such patients are easily ignored.
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