结论：妊娠期糖尿病可致妊娠期高血压疾病、剖宫产率增加。
长头多见于臀位胎儿，也可见于羊水过少，而不是羊水过多。
羊水过多是妊娠常见的并发症，其围生儿死亡率和发病率明显升高。
它会增加许多怀孕并发症发生的机率，其中最常见的就是羊水过多与早产。
该文就羊水过多的病因和发病机制、诊断和治疗等研究进展作以综述。
产前诊断食管闭锁原则上依赖两个非特异性的声像图征象：羊水过多、胃泡小或不显示。
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。