What to Expect after Birth in Idiopathic Polyhydramnios? an Analysis of Postnatal Diagnoses and Their Relationship to the Polyhydramnios Degree

To analyze postnatal abnormalities in idiopathic polyhydramnios and to estimate whether there was an association between the severity of polyhydramnios and postnatally diagnosed abnormalities. This was a retrospective cohort study of all idiopathic polyhydramnios cases delivered at our center between 2017 and 2021. Cases were identified as idiopathic after excluding known fetal genetic or structural abnormalities (including soft markers for aneuploidies), Rh isoimmunization, fetal anemia, multifetal pregnancies, pregestational or gestational diabetes, and known infection with TORCH group agents. The primary outcome was the association between polyhydramnios degree and any abnormalities detected after birth. Additional outcomes were the odds of specific groups of abnormalities based on polyhydramnios degree. The prevalence of idiopathic polyhydramnios was 14.7