单项选择题

患者女，26岁。G1P0。38周妊娠临产，因持续性右枕后位、第二产程延长，行会阴侧切十胎头吸引术助产，胎盘完整娩出8min后，打哈欠、恶心，阴道间歇性大流血约800ml，色暗红。查子宫软且轮廓不清，挤压宫底有大量血块流出。诊断为产后出血。最可能的原因是

A.子宫收缩乏力
B.胎盘因素
C.软产道裂伤
D.凝血功能障碍
E.子宫内翻

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A.M.
B.M.
What
C.Rent
D.
B.Rent
E.
C.Rent
F.
D.Rent

单项选择题

患者女，26岁。G1P0。38周妊娠临产，因持续性右枕后位、第二产程延长，行会阴侧切十胎头吸引术助产，胎盘完整娩出8min后，打哈欠、恶心，阴道间歇性大流血约800ml，色暗红。查子宫软且轮廓不清，挤压宫底有大量血块流出。诊断为产后出血。为防治失血性休克，最具原则性的护理措施是

A.迅速输血以补充同等血量
B.保持患者平卧，保暖、吸氧
C.严密观察生命体征、宫缩及恶露
D.观察会阴伤口，严格会阴护理
E.遵医嘱给抗生素防治感染

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