When Xiaohua was 28 weeks pregnant, she often felt stomachache and irregular bleeding from her lower body. Fearing that the baby’s condition is not right, she went to the hospital for an examination. The doctor told her that there was placenta previa. Because the amount of bleeding was not too much, she could go home and rest in bed, pay attention to observation. -Abandon the fetus and save the adult.
What is placenta previa? How can there be a danger of endangering the safety of mother and child?
The placenta completely or incompletely covers the internal cervix
Under normal circumstances, the placenta of a pregnant woman is attached to the bottom of the uterus, and there is a certain distance from the cervix, which will not affect the baby’s development or birth. The so-called placenta previa means that after 28 weeks of gestation, the placenta attaches to the lower part of the uterus, or the lower edge of the placenta reaches or covers the inner cervix. Placenta previa is divided into three types, marginal placenta previa, partial placenta previa and complete placenta previa.
There are many reasons for placenta previa, but they can be roughly divided into four categories: First, the mother has had multiple pregnancies, multiple artificial abortions, multiple curettage or multiple caesarean sections, etc.; second, After the fertilized egg reaches the uterus, the development is delayed, and it moves down to the lower part of the uterus at the undeveloped stage, and then grows and develops to form placenta previa; third, pregnant women have a history of smoking and drug use; fourth, the placenta area is too large and extends to The cervix forms the placenta previa.
Painless vaginal bleeding is typical
Painless vaginal bleeding in the third trimester of pregnancy is the most typical sign of placenta previa. Under normal circumstances, the amount of initial bleeding will not be much, but as the placenta continues to stretch, the lower uterus is also constantly stretched, the vagina will show repeated bleeding, and the blood volume will increase accordingly. Of course, the type of placenta previa is also closely related to the amount of bleeding. The first bleeding time of complete placenta previa will be relatively early, and the amount of bleeding will be more. What’s more, a large amount of bleeding will cause shock; The first bleeding of marginal placenta previa is relatively late, usually around 37-40 weeks of pregnancy, and the amount of bleeding will be relatively small; the bleeding of partial placenta previa is between complete and marginal between.
However, no matter what type of placenta previa, it will pose a threat to the safety of pregnant women and their babies. In mild cases, maternal anemia occurs; in severe cases, maternal shock and fetal hypoxia die in the abdomen.
Comprehensive evaluation to strive for the best results
Although placenta previa can cause harm to pregnant women and babies, when this happens, don’t panic. Seek medical attention in time and inform the doctor about your condition, such as the time of first bleeding and the amount of bleeding. The doctor will comprehensively evaluate the bleeding volume, the history of shock, the pregnancy cycle of the mother, the survival rate of the fetus, the type of placenta previa and other factors. Based on a people-oriented attitude, it will be extended as much as possible while ensuring the safety of the mother. During the pregnancy cycle, try to avoid premature delivery of the fetus, thereby improving the survival rate of the fetus.
When the gestational period is less than 36 weeks, the fetal weight is less than 2300 grams, the vaginal bleeding is less, and the pregnant woman’s overall health is better, conservative treatment should be adopted, and as much as possible, wait until the fetus grows to full term or about 36 weeks. During this period, pregnant women should maintain absolute bed rest, preferably lying on the left side, antibiotics or sedatives should be given when necessary, and should maintain a happy mood, stop sex, vaginal examinations and other stimulating things, pay attention to diet Healthy, eat more iron-rich foods; at the same time, closely observe vaginal bleeding, hemoglobin levels, and fetal conditions.
If the amount of vaginal bleeding is large, the lungs of the fetus are not yet mature, or although there is a small amount of bleeding, but complete placenta previa 36 weeks, partial and marginal placenta previa 37 weeks, or pregnant women in the process of conservative treatment For severe hemorrhagic shock and repeated bleeding near the expected date of delivery, pregnancy should be terminated for the sake of maternal safety. Cesarean section is the most important way to terminate pregnancy with placenta previa, and it is also the most fundamental measure to rescue massive hemorrhage of placenta previa.
In addition, there are still some women with placenta previa in clinical practice. As the pregnancy continues and the baby grows and develops, the uterine volume continues to increase, the placenta continues to stretch and migrate, and its position may gradually become normal.