Severe Preeclampsia With Fetal Growth Restriction at 33 Weeks
A 31-year-old woman, G2P1, at 33 weeks and 2 days gestation presents with a severe headache and visual flashes. Blood pressure is 168/112 mmHg on two readings. She has 3+ proteinuria, platelets 92,000/microL, AST 78 U/L, creatinine 1.1 mg/dL, and a urine protein-to-creatinine ratio of 0.8. Fetal ultrasound shows estimated weight at the 8th percentile, and umbilical artery Doppler shows absent end-diastolic flow. She is contracting irregularly; cervical examination is closed. The fetal heart rate tracing is category I with a baseline of 140 and moderate variability. She received betamethasone 12 hours ago. The neonatal unit has available CPAP but no extracorporeal membrane oxygenation. She asks whether the baby can stay inside longer because she is only 33 weeks.
1. What immediate treatment would you start, and how would you decide on delivery timing?
Read the worked answer
Start magnesium sulfate for seizure prophylaxis and treat the severe hypertension promptly with intravenous labetalol or hydralazine, aiming to lower blood pressure safely without causing fetal compromise. Place her on continuous maternal and fetal monitoring, restrict fluids, and check CBC, liver enzymes, renal function, and urine output serially.
She has severe preeclampsia with thrombocytopenia and fetal growth restriction with absent end-diastolic flow. At 33 weeks, steroids are beneficial, but delivery should not be delayed for a full course if maternal or fetal status deteriorates. Because she has severe features and abnormal Doppler, delivery is recommended after the steroid window if she remains stable; if platelets fall, liver enzymes rise, blood pressure is refractory, or the fetal tracing becomes nonreassuring, deliver immediately. With a closed cervix and fetal growth restriction, cesarean delivery is likely, but the decision should involve obstetrics, neonatology, and anesthesia.
2. How would you counsel the patient who wants to continue the pregnancy longer?
Read the worked answer
Acknowledge her wish to protect the baby and explain that the placenta is not working normally. Absent end-diastolic flow and growth at the 8th percentile mean the fetus is already under stress, and continuing the pregnancy risks stillbirth, placental abruption, and worsening maternal disease. Delivery at 33 weeks is a trade-off: prematurity versus ongoing hypoxia and maternal complications.
Explain that betamethasone has been started to reduce neonatal respiratory problems and that CPAP is available. Be honest that the neonatal unit cannot provide ECMO, so severe complications would require transfer. Discuss the likely need for cesarean delivery and a neonatal intensive care stay. Use shared decision-making, but be clear that urgent delivery is recommended if severe features persist or worsen.