孕妇,妊娠30周,因车祸腹部碰撞硬物后,出现持续性腹痛,查体:子宫硬如板状,有压痛,子宫比妊娠周数大,阴道无流血,胎心、胎动消失。诊断为重型胎盘早剥。该孕妇最易出现的并发症是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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