Why can appear placenta previa?

summary

It's a very dangerous thing for women to get pregnant and give birth. It's also a very hard thing. Many pregnant women need to pay special attention to their every move during pregnancy, otherwise it will lead to the risk of mother and child. Placenta previa is a problem that pregnant women are prone to. Why can appear placenta previa? Let's talk about it

Why can appear placenta previa?

Endometrial lesions of uterine body. Such as puerperal infection, multiparty, multiple curettage and cesarean section, cause endometritis or endometrial damage, so that the uterine decidua vascular growth is not complete, when the fertilized egg implantation, blood supply is insufficient, in order to absorb enough nutrition and expand the placenta area, extend to the lower uterine segment.

The area of placenta is too large. For example, the placental area of twins is larger than that of singletons and reaches the lower uterine segment. The incidence of placenta previa in twins is twice as high as that in singletons. The placenta is abnormal. For example, the main placenta is in the uterine body, and the placenta can reach the lower uterine segment near the cervical orifice.

The trophoblast of fertilized egg develops slowly. When the fertilized egg reached the uterine cavity, it did not develop to the stage of implantation, but continued to move down and implant into the lower uterine segment, where it grew and developed to form placenta previa. Intrapartum and postpartum hemorrhage. If the uterine incision can not avoid the placenta, the bleeding will increase significantly. After delivery, the muscle contraction of the lower uterine segment is poor, and the attached placenta is not easy to peel off, even if the open blood sinus is not easy to close after peeling off, it is prone to postpartum hemorrhage.

matters needing attention

As a pregnant woman, you must carefully observe every detail of your body, and actively prevent the emergence of all kinds of dangerous matters. Only in this way can you have a better pregnancy, give birth to a high-quality baby, and make your family more happy.