Amniotic fluid volume exceeding 2000ml during pregnancy is termed polyhydramnios. Its incidence ranges from 0.5% to 1%. A rapid increase in fluid volume over several days is classified as acute polyhydramnios; a gradual increase over an extended period is termed chronic polyhydramnios. The appearance and consistency of amniotic fluid in polyhydramnios cases are indistinguishable from normal fluid.
1. Excessive fluid causes uterine overdistension, leading to maternal dyspnea and edema in the lower limbs and perineum.
2. Increases the risk of placental abruption, threatening both maternal and fetal life.
3. Potential complications include poor uterine contraction and postpartum hemorrhage.
4. Predisposes to preterm delivery.
If a pregnant woman has polyhydramnios, she should pay attention to the following two points:
1. Undergo a 4D ultrasound screening for fetal abnormalities between 22-26 weeks of pregnancy to assess for major malformations and the development of primary organs. If fetal abnormalities are confirmed, termination of pregnancy may be necessary.
2. If polyhydramnios is caused by maternal blood sugar or blood pressure issues, and the fetus is otherwise healthy, actively treat the underlying condition to alleviate symptoms.