Placenta will gradually mature with pregnancy, so what is the relationship between placental thickness and maturity?

As the fetus grows, the placenta will gradually become thinner.

The placenta will gradually mature with the progress of pregnancy. When it matures to a certain extent, its function will decline, just like aging, and it cannot provide nutrition and oxygen to the fetus normally.

Placental maturity grading is a standard to measure placental maturity. Placental maturity can be divided into four grades: 0, 1, 2 and 3. ※.

Grade 0 indicates that the placenta is immature; 1 grade indicates that the placenta is basically mature; Grade 2 marks placental maturity; Grade 3 indicates that the placenta has aged. Due to calcification and cellulose deposition, the placenta's ability to transport oxygen and nutrients is reduced, and the fetus is in danger at any time.

Everyone's placental maturity is different. ※:

The second trimester of pregnancy (12-28 weeks)-placenta grade 0; Late pregnancy (30-32 weeks)-placenta 1 grade; After 36 weeks-placental grade 2 (more mature).

If the placenta grade 3 is found before 37 weeks, combined with the biparietal diameter and the estimated fetal weight of 2500 grams, the premature placenta should be considered and the possibility of intrauterine growth retardation should be guarded. At 38 weeks, the placenta entered grade 3, which marked the maturity of the placenta.

Placental thickness can be detected by ultrasound. The thickness of normal placenta is 2.5-3.8cm, and the maximum thickness should not exceed 50 mm

Too thick or too thin placenta is abnormal, but due to individual differences and different nutritional status, the placenta thickness will be different, as long as it is within the normal range, it is normal.

Expand:

1, placenta has a great relationship with fetal development. The pregnant mother transmits energy to the fetus through the placenta, and the fetus also absorbs nutrition through the placenta, so that the fetus can grow up healthily.

Placenta can provide nutrition for the fetus and contribute to the growth and development of the fetus. With the increase of pregnancy, the development of placenta will be more mature.

2. Comparison criteria of placental thickness and gestational age, such as placental thickness of 34mm at 32 weeks, 365,438+0 mm at 37 weeks and 36-438+0 mm at full term.

3, the placenta is too thick, suggesting that pregnant women have complications, but also be alert to premature maturity and calcification of the placenta, intrauterine hypoxia, placental abruption and so on.

If the placenta of pregnant women is slightly thicker, don't be too afraid. As long as the physical indicators are normal, you can rest assured to raise your baby. If you have abdominal pain or bleeding symptoms, you need to seek medical attention in time.

4. If the placenta is too thin, attention should be paid to excluding membranous placenta, which is characterized by large and thin placenta and easy bleeding in the second trimester. Small placenta can cause intrauterine growth retardation, even full-term low birth weight infants.