Experts say: Placental maturity is divided into three levels, level I is the early stage of placental maturity, with uniform echo, which can be seen in 30-32 weeks of pregnancy; Grade ⅱ indicates that the placenta is close to maturity; Grade Ⅲ indicates that the placenta has matured. The closer to term, the more mature the placenta.
The results of B-ultrasound usually divide placenta maturity into four grades: grade 0 is immature, which is more common in the second trimester; Grade I begins to mature, mostly at 29-36 weeks of pregnancy; Grade II maturity, usually after 36 weeks of pregnancy; Grade ⅲ indicates that the placenta is mature and tends to age, which is more common after 38 weeks of pregnancy.
Placental maturity generally reaches Grade III at full term, but a few people reach Grade III before 36 weeks of pregnancy or Grade I after 36 weeks of pregnancy. Therefore, whether the fetus is mature or not can not be judged only by placental grading, but also needs to be comprehensively analyzed with other clinical indicators and data. Whether the fetus can bear children mainly depends on whether the intrauterine environment is conducive to continued growth and development and whether it can survive after delivery. These two key issues must be determined by doctors after comprehensive analysis based on multiple monitoring indicators, so this time varies from person to person.