central placenta previa

例句：

1. 1. The patient's condition was critical, and the doctor had to perform a central placenta previa repair immediately.
   病人的状况危急，医生必须立即进行中央前置胎盘修复。
2. 2. The delivery was complicated by the presence of a central placenta previa, which required immediateintervention.
   分娩过程因存在中央前置胎盘而变得复杂，需要立即干预。
3. 3.In this case, the central placenta previa was successfully removed during the surgery, saving the mother's life.
   在这个案例中，手术期间成功移除了中央前置胎盘，挽救了母亲的生命。