A small biparietal diameter may cause fetal head deformities, fetal size smaller than the actual gestational week, and other effects.
Determine the patient’s actual gestational week. If the gestational week is accurate and the biparietal diameter is small but the head circumference is close to normal, it may be a fetal head deformity, but be alert for microcephaly. If the biparietal diameter, femur length, head circumference, and chest circumference are smaller than the gestational week, ovulation may be delayed, the calculation of the last menstrual period is incorrect, and the actual size of the fetus is smaller than the current calculated gestational week.
The small biparietal diameter of the fetus needs to be determined based on a combination of head circumference, abdominal circumference, and femur length. Biparietal diameter refers to the length of the widest part of the fetal head between the right and left sides, i.e. the distance between the temples on both sides. The biparietal diameter can determine whether a pregnant woman can have a normal delivery.
In addition, patients are advised to go to the hospital for regular checkups. Proper supplementation can also prevent and improve the symptoms of small fetal biparietal diameter.