胎儿胎盘循环
fetoplacental circulation
胎儿和新生儿受前置胎盘的影响
Fetus and newborn affected by placenta praevia
胎儿与胎盘重量比
birth weight to placental weight ratio
胎盘所致胎儿失血
Fetal blood loss from placenta
胎盘胎膜残留
retained placenta
Retained placental fragment
10 min B超胎儿生物物理评分
Biology-physics evaluation through Ten Minitus B ultrasound