1·The symptom comparison relaxes the polyhydramnios the pregnant woman, Chang Jingfa pregnants inspires hypertension disease and the position of the fetus is unusual.
症状比较缓和羊水过多的孕妇，常井发妊振高血压疾病和胎位异常。
2·Conclusion:Placental chorioangioma can induce several complications such as premature labor, polyhydramnios and neonatal asphyxia.
结论：胎盘血管瘤可引起早产、羊水过多、新生儿窒息等并发症；
3·Methods One hundred and fourty-one women with high hemorrhagic risk factors including twin pregnancy, polyhydramnios, fetal macrosomia, placenta previa were planned cesarean section.
方法对141例有出血高危因素（双胎、羊水过多、巨大儿、前置胎盘）的产妇行剖宫产术。