患者22岁,G1P0,孕32周,产前经过顺利,因不慎摔倒后腹痛半天、阴道少量出血来院急诊,检查:贫血貌,BP 105/75mmHg,HR112次/分,子宫较孕月大,宫高32cm,子宫张力大,放松差并有轻压痛,胎位、胎心不清,HB 70g/L,HCT 28%,此患者最可能的诊断是:( )
·胎盘早剥
·急性羊水过多
·双胎
·前置胎盘

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