How should a fetus with reversed umbilical artery end-diastolic flow at 31 weeks be managed?

Reversed end-diastolic flow indicates advanced placental insufficiency with high stillbirth risk. Management:

• Admit for intensive monitoring (CTG, ductus venosus Doppler)
• Antenatal corticosteroids for lung maturity
• Magnesium sulphate for fetal neuroprotection
• Deliver by caesarean section (around 30-32 weeks), as a compromised fetus tolerates labour poorly

Clinical relevance. Reversed EDF mandates steroids, magnesium and delivery by caesarean around 30-32 weeks - an important management decision.

More Detail

Managing reversed EDF in early-third-trimester FGR

Reversed umbilical artery end-diastolic flow is a late, ominous Doppler finding requiring prompt, planned delivery.

Significance

Reversed EDF means placental resistance is so high that blood flows backward in diastole - advanced placental insufficiency with a high risk of intrauterine death within days.

Management steps

1. Admit for inpatient surveillance - frequent CTG and ductus venosus Doppler (an abnormal ductus venosus mandates immediate delivery).
2. Antenatal corticosteroids for fetal lung maturity (at 31 weeks).
3. Magnesium sulphate for fetal neuroprotection (given before preterm delivery).
4. Deliver by caesarean section at around 30-32 weeks - the compromised fetus will not tolerate labour, and reversed EDF is itself an indication to deliver by this gestation.

Balance

The decision weighs the high stillbirth risk of remaining in utero against the prematurity risk at 31 weeks - here delivery is indicated.