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Gynecologist doctor measures with centimeter tape of a pregnant woman.

Polyhydramnios just diagnosed

My recent 36 week scan diagnosed polyhydramnios (95th centile) and I am now very worried about cord prolapse and bleeding. What are risks of this and should I go in to hospital for an assessment as soon as my waters break or should I wait for regular strong contractions as generally advised?

Excess amniotic fluid (polyhydramnios) can be associated with large babies, gestational diabetes, twins, and occasionally abnormalities in the baby or placenta. Sometimes it is just a temporary problem and often no cause is found.

If it persists, there is an increased risk of early labour and sometimes early rupture of the membranes and a loss of fluid . Because of the extra fluid , the baby sometimes takes an unusual position inside the womb, such as a breech , or transverse or simply a high non engaged head. In these circumstances , when the membranes rupture , there is an increased chance of cord prolapse or cord entanglement , but this remains a rare event. Serious bleeding is very unlikely.

So if there is any sign of membrane rupture you should go into hospital for a check up , sooner rather than later.

If the baby’s position becomes unstable after 37 weeks , you may need some extra care and attention, but most of the time no extra intervention is needed.

Your baby will need a careful check by the paediatricians after birth.



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