Hypertension at 34 weeks with a non-reassuring fetal status
A 29-year-old primigravida at 34+2 weeks presents with a severe frontal headache and blurred vision. Blood pressure is 168/112 mmHg on two readings 15 minutes apart. Urine dipstick shows 3+ protein. Reflexes are brisk with 2 beats of clonus; she has mild right upper quadrant tenderness. Fetal heart rate tracing shows a baseline of 150 bpm with reduced variability and one late deceleration in 20 minutes. Platelets are 96 × 10^9/L, AST 88 U/L, creatinine 95 µmol/L. The obstetric unit has a level 2 neonatal unit but no on-site adult ICU; the tertiary center is 45 minutes away.
1. What is the diagnosis and how would you prioritize management in the first hour?
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Diagnosis: Severe pre-eclampsia with features of HELLP syndrome (thrombocytopenia, elevated AST) at 34+2 weeks, with a non-reassuring fetal heart rate pattern.
First-hour priorities (maternal stabilization first):
- Seizure prophylaxis: Magnesium sulfate loading dose (e.g., 4 g IV over 15-20 min) followed by maintenance infusion, with monitoring of reflexes, respiratory rate, and urine output. Have calcium gluconate available.
- Blood pressure control: Treat severe hypertension with IV labetalol, hydralazine, or oral nifedipine per protocol, aiming for a controlled reduction (e.g., systolic 140-150, diastolic 90-100) to avoid abrupt drops that compromise placental perfusion.
- Fetal assessment: Continuous CTG; position left lateral, give oxygen if indicated, and avoid maternal hypotension.
- Labs and blood products: Repeat platelets, LFTs, renal function, coagulation, and group and save/crossmatch; alert blood bank given HELLP.
- Multidisciplinary activation: Senior obstetrician, anesthesia, neonatology, and arrange transfer to a unit with adult ICU and higher-level neonatal care if delivery is anticipated.
Key principle: Maternal stabilization precedes delivery, but delivery is the definitive treatment and should not be delayed once stabilized.
2. The fetal tracing remains non-reassuring. How do you decide on timing and mode of delivery, and how do you counsel the patient?
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Decision-making:
- At 34+2 weeks with severe pre-eclampsia, HELLP features, and a non-reassuring fetal heart rate, delivery is indicated. The gestational age is beyond the threshold where expectant management is generally appropriate for severe disease.
- Mode: Cesarean delivery is often preferred when the cervix is unfavorable, the fetus is compromised, or rapid delivery is needed. Vaginal delivery can be considered if the cervix is favorable and maternal and fetal status allow, with continuous monitoring.
- Anesthesia: Regional anesthesia is generally preferred if platelets and coagulation permit; discuss with anesthesia given thrombocytopenia (platelets 96).
- Neonatal: Anticipate prematurity at 34 weeks; arrange neonatal team presence and corticosteroids if time permits (a course may still be considered, but should not delay delivery in a deteriorating fetus).
Counseling:
- Explain that she has a serious pregnancy-related condition affecting her blood pressure, liver, and platelets, and that the baby is showing signs of stress.
- Explain that delivery is the safest option for both, that the baby will likely need neonatal care because of prematurity, and that magnesium is given to prevent seizures.
- Discuss the possibility of transfer to a tertiary center, the risks of cesarean versus vaginal delivery, and the need for close postpartum monitoring (risk of eclampsia and hemorrhage persists after delivery).
- Document the discussion and involve the patient in decisions where possible.