没有宫缩的外伤孕妇一般无胎盘早剥，然而10分钟内宫缩超过一次（每小时6次）的患者胎盘早剥的发病率为20%。
Trauma patients with no uterine contraction activity, usually do not have abruption, while patients with greater than one contraction per 10 minutes (6 per hour) have a 20% incidence of abruption.
目的：探讨重型胎盘早剥的临床特点，寻找胎盘早剥的最好防治措施。
Objective:To explore the clinical characteristic of severe placental abruption and find the best way to prevent and treat it.
应用推荐