When does pregnant woman placenta mature?

summary

The placenta will gradually mature with the progress of pregnancy. When it matures to a certain extent, its function will decline. Just like aging, it can not normally provide nutrition and oxygen to the fetus. The placenta maturity classification is a standard used to measure the maturity of the placenta, which is usually divided into four levels, as follows:

When does pregnant woman placenta mature?

There are four grades of placenta maturity: grade 0, grade 1, grade 2 and grade 3. Grade 0 indicates that the placenta is not mature: generally in the second trimester of pregnancy, about 12-28 weeks of pregnancy. Grade 1 marks the early stage of placental maturation: 30-32 weeks of gestation, the early stage of placental maturation, which can also provide nutrition for the fetus. Grade 2 marks that the placenta is mature: generally after 36 weeks of gestation, the placenta is close to Changshu. Grade 3 indicates that the placenta is aging. Due to calcification and cellulose deposition, the placenta's ability to transport oxygen and nutrients is reduced, and the fetus is at risk at any time.

Each person's placental maturity is different: the second trimester of pregnancy (12-28 weeks) - placental grade 0; Third trimester (30-32 weeks) - placental grade 1; After 36 weeks - placenta grade 2 (more mature). If placental grade 3 was found before 37 weeks, combined with biparietal diameter and estimated fetal weight of 2500 g, premature placenta should be considered, and the possibility of intrauterine growth retardation should be alerted. At 38 weeks, the placenta entered grade 3, which indicated that the placenta was mature.

Can placental maturity give birth to? Generally, the natural delivery can be carried out smoothly when the maturity of placenta is 1 or 2. Placental maturity level 1 indicates that the placenta is basically mature, and level 2 indicates that the placenta is mature, which is normal for delivery at this time. However, if the maturity of the placenta has reached grade 3, it indicates that the placenta is aging, which may cause danger to the fetus. At this time, pregnant women should follow the doctor's guidance and take appropriate measures.

matters needing attention

The nutrients needed for fetal development are obtained through the placenta, so the function of placenta directly affects the health of the fetus. Expectant mothers should be alert to placental insufficiency and other problems in daily life, so as to avoid fetal malnutrition or fetal hypoxia.