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Updated: Aug 10, 2025

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
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Term Idiopathic Polyhydramnios, and Labor Complications.

Maayan Bas Lando1, Marnina Urman1, Yifat Weiss1

  • 1Shaare Zedek Medical Center, Department of Obstetrics and Gynecology, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem 91031, Israel.

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|February 11, 2023
PubMed
Summary

Idiopathic polyhydramnios during term labor is linked to increased risks of cesarean delivery (CD), macrosomia, and neonatal respiratory complications. The severity of polyhydramnios correlates with higher rates of both macrosomia and CD.

Keywords:
labor complicationsmacrosomiapolyhydramnios

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine
  • Perinatal Outcomes

Background:

  • Polyhydramnios, excess amniotic fluid, is linked to adverse pregnancy outcomes.
  • Complications during labor in cases of idiopathic polyhydramnios require further investigation.

Purpose of the Study:

  • To assess labor and perinatal outcomes in term pregnancies with idiopathic polyhydramnios.
  • To determine the association between idiopathic polyhydramnios and adverse maternal and neonatal outcomes.

Main Methods:

  • Retrospective cohort study comparing 750 women with idiopathic polyhydramnios (AFI >24 cm or DVP >8 cm) to 7000 controls.
  • Exclusion criteria included diabetes, fetal anomalies, IUFD, multifetal pregnancies, and elective cesarean deliveries.
  • Statistical analysis involved descriptive statistics, chi-square, Fisher's exact test, Mann-Whitney Test, and multivariate logistic models.

Main Results:

  • Idiopathic polyhydramnios was associated with higher rates of cesarean delivery (9.3% vs. 6.2%), macrosomia (22.8% vs. 7.0%), and neonatal respiratory complications (2.0% vs. 0.8%).
  • Multivariate analysis confirmed independent associations between polyhydramnios and increased rates of CD (aOR 1.62) and composite adverse neonatal outcomes (aOR 1.28).
  • Polyhydramnios severity showed a significant trend with increased rates of macrosomia and CD.

Conclusions:

  • Term idiopathic polyhydramnios is an independent risk factor for macrosomia, cesarean delivery, and neonatal complications.
  • The severity of polyhydramnios directly correlates with increased risks of macrosomia and cesarean delivery.