Posterior wall of the first placenta Anterior wall of the second placenta

The most typical symptom of placenta previa is painless, recurrent vaginal bleeding in the late stages of pregnancy. Bleeding usually occurs unexpectedly, and sometimes pregnant women wake up to find themselves lying in a pool of blood.

Placenta previa is one of the main causes of bleeding in late pregnancy and is a serious complication during pregnancy. The embryo is located on the anterior wall, which means that the embryo is relatively close to the cervical os and is prone to dislocation, resulting in miscarriage or premature birth.

The main impact of placenta previa on pregnant mothers is postpartum hemorrhage and infection. Because the embryo is attached to the lower part of the uterus, the tissue is thin and fragile, and it is easy to cause tearing and bleeding during delivery. In addition, the contraction force of the lower part of the uterus is weak, and it is not easy for the embryo to completely separate after giving birth, which can cause postpartum hemorrhage. Coupled with repeated bleeding, pregnant women often suffer from anemia, so their resistance is not high and they are prone to infection after giving birth. Placenta previa also has a great impact on the fetus. Repeated bleeding of placenta previa can easily lead to premature birth; abruption and stress of part of the placenta previa can cause ischemic oxygen deficiency of the embryo, which can easily lead to intrauterine asphyxia of the fetus; because the embryo occupies the position below the uterus, it prevents the fetal head from entering the pregnant woman's pelvic channel, resulting in abnormal fetal position such as breech presentation and a higher incidence of transverse fetal position than usual. Prematurity and lack of oxygen are common causes of fetal and infant mortality. When pregnant mothers have a low-lying placenta, they should carry out proper health care, but avoid any excessive exercise, such as running, jumping, etc., and some postures are definitely not suitable. For example, squatting. Pregnant mothers already bear a lot of pressure on their lower limbs due to the protruding abdomen, so it will be more difficult to squat. For pregnant mothers with a low-lying placenta, if they squat, the cervix will dilate, and the embryo located lower will also be stretched, causing separation and bleeding. Therefore, for pregnant mothers with a low-lying placenta, squatting is definitely not the right posture.

A pregnant woman had internal bleeding of 20,000 ml due to placenta previa

The normal adhesion of the embryo is to the posterior wall, anterior wall or outer wall of the uterine body. If the embryo adheres to the bottom of the uterus or covers the internal os of the cervix, and its location is smaller than the presenting part of the fetus, it is called placenta previa, which can easily cause internal bleeding in pregnant women. The dangerous type of placenta previa is when the embryo grows right at the cesarean section scar (that is, the placenta implantation scar).

If you want to have a second child, try to choose a natural birth for the first child.

Most mothers of second children are older. From a medical point of view, pregnant women over 35 years old are considered older, and therefore, many pregnant women feel that the risk is high and actively choose cesarean section. Liu Xinghui and other obstetrics and medical experts and professors do not fully agree with this matter.

Whether to choose natural birth or caesarean section, the most important factor is the physical condition. Even for older mothers, as long as their health is ideal, they can choose natural birth. Pregnant women who are planning to have a second child should try to choose natural birth for the first child.

If your body's conditions are not suitable, don't expect to have a natural birth. You must choose natural childbirth. If the baby is too large and eventually has to be delivered by caesarean section, it will cause greater harm to the pregnant woman and the child.