This is called placenta praevia.
这就是所谓的前置胎盘。
Pregnancy; Placenta praevia; Diagnosis; Treatment.
妊娠；前置胎盘；诊断；治疗。
There were not low placenta praevia in these cases.
本组病例中未遇到低置型前置胎盘。
Objective: To understand the causes and clinical manifestation of placenta praevia, its diagnosis and therapeutic methods.
目的：探讨前置胎盘的病因、临床表现及诊治方法。
Conclusion The key point of reducing the incidence of pernicious placenta praevia is to step down the rate of cesarean section.
结论降低剖宫产率是减少凶险型前置胎盘发生的关键。
Objective: to investigate the causes of placenta praevia, the timing and methods of stopping pregnancy and measures of stopping bleeding.
目的：探讨前置胎盘发生原因、终止妊娠时机、方式及止血措施。
Premature rupture of membrane, fetal distress, severe pregnancy induced hypertension, placenta praevia were the main risk factors of premature delivery.
结果胎膜早破，胎儿宫内窘迫，重度妊高征，前置胎盘是引起早产的主要因素。
The number of bleeding episodes and the degree of praevia are not associated with outcomes, so they can't be the proof to determine the treatment plan ahead of time.
其类型及产前出血状况不能预测其结局，也不能据此提前做出处理方案。
Conclusion Caesarean section for first live birth is associated with a 47% increased risk of placenta praevia and 40% increased risk of placental abruption in second pregnancy with a singleton.
结论：首次分娩采用剖宫产女性在第二次怀孕(单胎)发生前置胎盘风险为47%，发生胎盘早剥风险为40%。
Conclusion Caesarean section for first live birth is associated with a 47% increased risk of placenta praevia and 40% increased risk of placental abruption in second pregnancy with a singleton.
结论：首次分娩采用剖宫产女性在第二次怀孕(单胎)发生前置胎盘风险为47%，发生胎盘早剥风险为40%。
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