Tip 168: polyhydramnios

Polyhydramnios occurs in 1% of pregnancies.

50% of cases of polyhydramnios are idiopathic.

~20% of cases of polyhydramnios are associated with fetal anomalies, such as neural tube defects and GI atresias.

~30% of cases are accounted for by: twins, maternal diabetes, hydrops and TORCH infections.

External link: Carter, B.S. (2012). Polyhydramnios and oligohydramnios. Medscape. Article 975821.

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