30 weeks of pregnancy is the stage of pregnancy reaching over seven months, which is already in the late stage of pregnancy and requires special attention. Pregnant women only need to endure for a while to give birth smoothly. At 30 weeks of pregnancy, female friends also want to know the current condition of the fetus, and biparietal diameter is one of the fetal indicators that can reflect the growth and development of the fetus well. So, is biparietal diameter 84 large at 30 weeks of pregnancy?
At 30 weeks of pregnancy, the biparietal diameter of 84 is slightly larger. The normal biparietal diameter at 30 weeks of pregnancy is 75 millimeters, while the femur length at this time is usually 57 millimeters. The head circumference is 275 millimeters, and the abdominal circumference is 258 millimeters. However, due to differences in fetal growth and development, as long as the number of weeks of amenorrhea and the size of the fetus detected by ultrasound, with a difference of about one week, are considered normal phenomena and do not require human intervention. At this time, fetal fat deposition is more obvious, so pregnant women should eat more high protein foods and count fetal movements well.
Using biparietal diameter to determine a child's developmental size is a reference data. The maximum diameter line for the fetal head to pass through the birth canal during delivery is the biparietal diameter, while the minimum diameter line for the fetal head to pass through the birth canal is the transverse diameter of the pelvic outlet. Therefore, if the biparietal diameter is greater than the transverse diameter of the pelvic outlet, whether the child can give birth naturally is a question. The final choice also depends on the pregnant woman's pelvis and the size of the full-term baby.
