What are the dangers of placenta previa? Five aspects to tell you

During pregnancy, it is divided into placenta previa and placenta posterior. Placenta previa is not good for the fetus. After 28 weeks of pregnancy, if placenta previa occurs, it will cause bleeding in late pregnancy. Let's learn about the specific dangers in detail.

1. The most typical symptom of placenta previa is unprovoked, painless, recurrent vaginal bleeding in late pregnancy or during labor. The amount of bleeding can be more or less. Excessive bleeding may even cause fatal shock, thus endangering the lives of the mother and child. Generally speaking, complete placenta previa bleeding occurs early (usually the first bleeding occurs around 28 weeks of pregnancy), the amount of bleeding is large, and the condition is critical.

2. Marginal placenta previa bleeding often occurs in the late pregnancy or after delivery, with less bleeding and milder condition.

3. The time of first bleeding, amount of bleeding and number of repeated bleeding of partial placenta previa are between the two. If the bleeding is excessive, it may cause fetal distress, and in severe cases, it may lead to fetal death due to lack of oxygen.

4. Complete placenta previa is often easily combined with placenta accreta, that is, the placenta grows into the myometrium of the uterus. This situation is very dangerous. After delivery, the fetus is delivered but the placenta cannot be delivered, which will cause severe hemorrhage. In severe cases, the uterus needs to be removed and it may even endanger the life of the pregnant woman.

5. In addition, placenta previa can easily cause heavy bleeding before, during, and after delivery. The detachment surface of the placenta previa is close to the external os of the cervix, and bacteria can easily invade the detachment surface of the placenta through the vagina. In addition, the mother is prone to postpartum infection due to anemia and physical weakness caused by repeated bleeding.