What is the normal value for fetal biparietal diameter?

Every expectant mother regularly visits the hospital for prenatal examinations, which helps prevent fetal diseases and promotes maternal health.

What is the normal value for fetal biparietal diameter (BPD)?

Generally, a BPD measurement exceeding 8.5 cm on ultrasound indicates fetal maturity. At term, the fetal BPD typically reaches 9.4 cm or more. Starting from the fifth month of pregnancy, the BPD generally corresponds closely to the gestational age in months—for example, approximately 7.0 cm at seven months and around 8.0 cm at eight months. After eight months, the BPD usually increases by about 0.2 cm per week, allowing clinicians to assess fetal growth based on these measurements.

During fetal development, adequate rest is essential—particularly avoiding strenuous physical activity during early pregnancy. Diet should be light and nutritionally balanced; excessive supplementation should be avoided. Additionally, maintaining a positive emotional state, avoiding exposure to toxic or hazardous substances, and completing scheduled prenatal checkups are all crucial.

Throughout pregnancy, maintaining a cheerful mood daily, along with appropriate dietary and nutritional balance, is important. Sexual intercourse and exposure to toxic or hazardous substances should be avoided during early pregnancy. In late pregnancy, physical activity should be reduced, and weight gain should be carefully managed. Regular prenatal examinations are essential throughout the entire pregnancy. We hope this information is helpful to you!