from Section 10 - Complications of the Cord, Amnion, and Gravid Uterus
Published online by Cambridge University Press: 08 April 2025
Polyhydramnios, an abnormal increase in amniotic fluid, is estimated to affect 1–2% of otherwise low-risk singleton pregnancies. Ranging from mild to severe, underlying causes of polyhydramnios include fetal anomalies related to both production and resorption of amniotic fluid, genetic syndromes, maternal conditions, and infections. Routine measurement of fundal height is the screening modality recommended to assess for possible polyhydramnios given the known adverse outcomes. Once diagnosed, detailed anatomic assessment followed by antenatal testing is warranted to reduce associated adverse outcomes, including risk of fetal and neonatal demise in more severe cases. Optimizing delivery timing and planning is paramount to reduce known risks including cesarean delivery, operative delivery, postpartum hemorrhage, and neonatal intensive care admissions.
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