下列哪些因素有利于生理止血() ["A．儿茶酚胺","B．血小板粘附、聚集","C．血小板对毛细血管壁的营养和支持","D．血液凝固","E．血小板释放TXA"]
产后出血
下列哪些是引起血小板聚集的因素() ["A．高钙血症","B．抗原抗体复合物","C．内源性凝血酶增加","D．儿茶酚胺增多","E．血管内皮损伤"]
自觉宫缩很强，产程无进展()无腹痛的阴道流血()病理性缩复环() ["A．前置胎盘","B．子宫部分破裂","C．胎盘植入","D．先兆子宫破裂","E．高张性宫缩乏力"]
胎盘剥离后阴道流血不止，检查子宫轮廓不清，原因是()胎盘娩出后阴道流血多，血不凝，出血原因是()胎儿娩出后立即出现阴道持续性流血，色鲜红，出血原因是() ["A．软产道裂伤","B．胎盘及胎膜","C．宫缩乏力","D．凝血功能障碍","E．胎盘早剥"]
脐带脱垂
