Pregnant women who are 38 weeks pregnant have entered the full-term pregnancy stage, and it is necessary to strengthen prenatal examinations at this time. Because labor may occur at any time, and the biparietal diameter of the fetus during this stage is also a key examination item in late pregnancy. So, is it normal to have a biparietal diameter of 86mm at 38 weeks of pregnancy?
The reference range for fetal biparietal diameter at 38 weeks of pregnancy for women is 8.49cm to 9.67cm, with an average reference standard value of 9.08 ± 0.59cm. Based on this reference standard, the fetal biparietal diameter measured by prenatal examination at 38 weeks of pregnancy for expectant mothers is 86mm, which is within the normal range for this gestational week, indicating normal development of fetal biparietal diameter.
If the fetal biparietal diameter measured at this gestational age is too large, it indicates that the expectant mother has sufficient nutrition during pregnancy. However, if the biparietal diameter is too large, pathological factors such as hydrocephalus should be considered, so this should be noted. If there is such an abnormally large situation, further B-ultrasound examination should be conducted to rule out the possibility of fetal developmental abnormalities.
If the biparietal diameter value is too small, it is necessary to pay attention to increasing nutrition during pregnancy and eat more protein rich foods. In addition, at 38 weeks of pregnancy, it is considered a full-term pregnancy. If there are contractions, abdominal pain, or other discomforts, especially if there is redness or water breakthrough, one should be highly vigilant and seek medical attention promptly for delivery.
