During pregnancy, there may be a possibility of placenta previa in women. Placenta previa usually attaches to the lower part of the uterus, which is located very low and can have adverse effects on pregnancy. Therefore, pregnant women with this condition should take some measures. So, how is placenta previa caused in the first pregnancy?
The occurrence of placenta previa in a female's first pregnancy is likely caused by endometrial lesions, such as postpartum infections, multiparity, and multiple curettage, which can lead to endometritis and damage to the endometrium. This can affect the growth of uterine decidual blood vessels and result in insufficient blood supply during fertilized egg implantation. At this time, in order to obtain sufficient nutrients, the placenta will expand its area and extend to the lower segment of the uterus, forming placenta previa.
When the placental area is too large, it can also lead to placenta previa. If a woman is pregnant with twins, the placental area is much larger than that of a singleton, which can easily cause the placenta to extend to the lower part of the uterus and form placenta previa. Women who are pregnant with twins are twice as likely to have placenta previa as those who are pregnant with a single child.
Placenta previa may also be caused by placental abnormalities, such as placenta previa. When a woman is pregnant, the placenta is located at the bottom of the uterus, and at this time, the placenta may reach the lower segment of the uterus or even approach the cervix. In addition, delayed development of the trophoblast layer in fertilized eggs can also lead to pre pregnancy.
