Management of Fetal Growth Restriction with Oligohydramnios

Introduction to Management

The American College of Obstetricians and Gynecologists recommends cesarean section with prior administration of antenatal corticosteroids for late-onset fetal growth restriction with oligohydramnios at 35 weeks to prevent fetal mortality and morbidity 1

Fetal growth restriction complicated by oligohydramnios significantly worsens the prognosis, with birth weight <10th percentile and amniotic fluid index (AFI) of 3 cm 1
Umbilical artery Doppler status should be immediately obtained to determine urgency 1

Antenatal corticosteroids should be administered immediately given the gestational age of 35 weeks and high likelihood of imminent delivery, due to significant placental dysfunction 1, 2

Delivery at 37 weeks is recommended for fetal growth restriction with decreased diastolic flow without absent/reversed end-diastolic velocity 1
Delivery at 33-34 weeks is recommended if umbilical artery Doppler shows absent end-diastolic velocity, and at 35 weeks, this patient is already beyond this threshold and should be delivered promptly 1
Immediate hospitalization, corticosteroids, and delivery at 30-32 weeks is recommended if umbilical artery Doppler shows reversed end-diastolic velocity, and at 35 weeks, this mandates immediate delivery 2

Cardiotocography monitoring at least 1-2 times daily to detect acute deterioration if delivery is delayed 2
Serial umbilical artery Doppler assessment to monitor for worsening placental function if delivery is delayed 1
Immediate delivery if any signs of fetal compromise, including non-reassuring fetal heart rate patterns or worsening Doppler parameters 1, 2

Coordinate with neonatology immediately for optimal resuscitation planning given the fetal growth restriction and oligohydramnios 2