Placenta previa: diagnosis, treatment, consequences
Normally, the placenta is located on the back or front wall of the uterus to the transition at its sides. In some cases, it is in the lower divisions, blocking the entrance of the internal os. Due to improper location of the placenta may be difficult for a natural delivery or caesarean section.
The most common causes of placenta previa are uterine pathology of inflammation, operations, complications in childbirth. Violations of the placenta attachment could be the consequences of uterine fibroids, istmikotservikalnoy failure, endometriosis, inflammation, multiple pregnancy. The main symptom of placenta previa is isolated bleeding from the genital tract, resulting in different periods of pregnancy. At later stages, they tend to become stronger due to uterine contractions. The cause of bleeding is placental abruption, which resulted in the fetus may develop anoxia. Provoke bleeding may exercise, sudden movements, intercourse, constipation, heat treatments. Bleeding may be abundant without pronounced pain, stop and appear again. Incomplete placenta previa, they can only start in late pregnancy or early delivery. Repeated bleeding can cause anemia of pregnancy. Placenta previa can cause miscarriage, premature births, complications of labor. For pregnant women with previa is characterized by gestosis, lowering blood pressure, bleeding disorder, fetal hypoxia, his wrong position. Identify placenta previa can not only with the help of ultrasound, but also on the ordinary examination complaining of bleeding pregnant with the help of mirrors. If there is an incorrect location of the placenta should monitor its migration dynamics. To do this, conducted in the US 16, 24, 26, 34 weeks at a moderate filling of the bladder. As an impact on the migration of the placenta can not be, but in most cases, placenta previa diagnosed in the early stages of pregnancy, it departs from the internal os to the 32-34 week. In the absence of bleeding pregnant women with placenta previa can be is at home, observing precautions: avoid stress, stress, sexuality. After 24 weeks must be monitored in a hospital. With scant bleeding untreated, aimed at the continuation of pregnancy. For the treatment used drugs affecting uterine contractions directed to the treatment of anemia and fruit-placental insufficiency. For large blood loss and a strong reduction of blood pressure is carried out emergency cesarean delivery. If the pregnancy is unable to communicate to 38-40 weeks, no heavy bleeding, there is no associated complications and placenta predlezhit part, there may be a natural childbirth with the early opening of the membranes.