Causes of polyhydramnios in pregnant women

　　Causes of polyhydramnios

　　The amount of amniotic fluid varies with fetus It gradually increases with the growth of the fetus. When the fetus reaches 38 weeks, the amniotic fluid volume reaches its peak, with an average of about 1000 ml. If the amount of amniotic fluid exceeds 2000 ml at any time during pregnancy, it is called polyhydramnios.

　　The cause of polyhydramnios may be that the mother has diabetes. gestational hypertension syndrome, or heart, kidney disease , and there are also reasons for the fetus itself. When the fetus develops abnormally, such as anencephaly, the urine increases due to lack of antidiuretic hormone. ； Spina bifida, due to the exposure of the meninges to the body surface, increased cerebrospinal fluid leakage ； Or esophageal atresia cannot swallow amniotic fluid, which can cause increased amniotic fluid. According to statistics, about 20% to 50% of pregnant women with polyhydramnios will have fetal malformations. In addition, the chance of polyhydramnios in multiple pregnancies is about 10 times higher than in single pregnancies. When the blood types of mother and child are incompatible, polyhydramnios may easily occur because villous edema affects body fluid exchange.

　　Due to polyhydramnios, mothers often feel that their abdomen is enlarging abnormally rapidly, and may also experience symptoms of palpitation, shortness of breath, and edema of the lower limbs.； The fetus is floating in the water and it is difficult to "land". Although polyhydramnios is not a good sign, there is no need to be nervous. Some detection methods such as ultrasonic examination can detect polyhydramnios at a glance, allowing early detection and timely measures to be taken.