2022 Volume 58 Issue 1 Pages 105-109
We conducted a retrospective study to evaluate the association between the severity of polyhydramnios and its causes, neonatal prognosis, and the accuracy of prenatal diagnosis in singleton pregnancies with polyhydramnios.
This study included 84 singleton pregnancies with polyhydramnios, who delivered at our hospital between January 2015 and December 2019. Polyhydramnios was diagnosed if amniotic fluid index（AFI）was ≥25cm. All patients were classified into three groups based on the maximum value of AFI in the third trimester（mild: AFI between 25-30 cm, moderate: AFI between 30-35 cm, and severe: AFI >35 cm）.
The incidence of fetal malformations was significantly higher in moderate or severe group（54%）than in mild group（20%）. The mortality rate was significantly higher in infants those who required amnioreduction（55.6%）and those with chromosomal abnormalities（72.7%）. The accuracy of prenatal diagnosis was 92%, which was slightly higher than that of previous reports.
