At what biparietal diameter is vaginal delivery not recommended?
Disease description:
I’m more than eight months pregnant and am unsure whether I’ll have a vaginal delivery or a cesarean section. I’d like to know: what biparietal diameter (BPD) value is considered too large for vaginal delivery?
Doctor's answer (2)
Dr. Xu Yongqian
Hello, if the fetal biparietal diameter (BPD) exceeds 10 cm, vaginal delivery may not be advisable. An enlarged BPD—above the normal reference range—suggests a larger-than-average fetal head and higher birth weight, which may increase the risk of dystocia during labor. However, BPD alone is not a primary or definitive indicator for determining the feasibility of vaginal delivery. We hope this information is helpful to you. Wishing you a happy and healthy life!
