The relation between causes and onset time of polyhydramnios

Area of Science:

• Perinatology
• Maternal-Fetal Medicine
• Obstetrics

Background:

• Polyhydramnios, characterized by excessive amniotic fluid, can indicate maternal or fetal complications.
• Understanding the timing and severity of polyhydramnios is crucial for risk assessment.

Purpose of the Study:

• To investigate the onset time and maximum amniotic fluid index (AFI) in polyhydramnios.
• To determine associations between polyhydramnios characteristics and its underlying causes.

Main Methods:

• Retrospective cohort study of 68 singleton pregnancies between 2012 and 2014.
• Analysis of gestational age at polyhydramnios onset and maximum AFI.
• Correlation with maternal, fetal, and idiopathic factors.

Main Results:

• Gestational age at onset varied by cause: maternal (30.0 ± 2.8 weeks), fetal (30.0 ± 3.5 weeks), and idiopathic (32.3 ± 2.0 weeks).
• Idiopathic polyhydramnios showed a significantly later onset of maximum AFI.
• Higher AFI correlated with increased congenital anomalies (40% abnormal karyotype) and maternal diabetes.

Conclusions:

• Polyhydramnios diagnosis via ultrasound necessitates further maternal and fetal diagnostic testing.
• The timing and severity of polyhydramnios provide insights into potential underlying causes and associated risks.