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【单选题】
初产妇, 25 岁,孕足月出现规律性宮缩, 1 小时后来院,由于宫缩过强,立刻将产妇放在产床上,未来得及消毒及保护会阴,胎儿急速娩出,正处理婴儿时,见明道有较多血流出。腹部检查:子宫收缩良好。采取以下哪项措施可以预防产后出血( )A.
胎肩娩出后，立即肌内注射催产素
B.
胎头娩出后，即可给予催产素，加强宫缩
C.
注意保护会阴
D.
胎儿娩出后肌内注射催产素
E.
胎儿娩出后，迅速徒手取出胎盘
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