Head circumference of 336mm can you have a natural birth?

Patient's question:

Could you please help me check if I can have a normal delivery? What is the length of 336mm in centimeters? What part does the biparietal diameter refer to?

Doctor's answer:

This ultrasound examination estimates the fetus's size to be over 6 pounds. According to the ultrasound results, the biparietal diameter is 94mm, and the predicted fetal weight is over 6 pounds, which is within the normal range. It is recommended to have weekly prenatal check-ups, pay attention to fetal movements, and seek medical attention promptly if any discomfort such as abdominal pain or vaginal bleeding occurs. Strengthen prenatal check-ups in the late stages of pregnancy; prepare in advance to welcome the baby's arrival. Whether a breech fetus can have a vaginal delivery mainly depends on the biparietal diameter of the fetus and the lengths of various pelvic diameters in the mother. The biparietal diameter is the largest transverse diameter of the fetal head, and its average value is 93mm.

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