Severe Preeclampsia with HELLP Features at 30 Weeks: Timing, Steroids and Mode of Delivery
A 29-year-old woman, gravida 2 para 1, at 30 weeks and 2 days of gestation, presents with a two-day history of frontal headache and new flashing lights. Blood pressure is 162/108 mmHg on two readings 15 minutes apart. She has 3+ proteinuria on dipstick and a urine protein-to-creatinine ratio of 1.8. She reports right upper quadrant discomfort. Reflexes are brisk with two beats of clonus; there is no papilledema. Platelets 88 ×10⁹/L, AST 96 U/L, ALT 104 U/L, LDH 780 U/L, creatinine 0.9 mg/dL, fibrinogen 340 mg/dL, haptoglobin low. Fetal heart tracing is category I with a baseline of 140 beats/min, normal variability and no decelerations; estimated fetal weight is 1,350 g with normal umbilical artery Doppler. The cervix is closed and 20% effaced, and the fetal head is at −2 station.
1. State the diagnosis and write your immediate drug orders, including doses, targets and monitoring.
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Diagnosis: preeclampsia with severe features (blood pressure ≥160/110, headache, visual symptoms, RUQ pain, clonus), with partial HELLP syndrome (platelets 88 ×10⁹/L, AST/ALT elevated, LDH 780 U/L, low haptoglobin). Delivery is the definitive treatment.
Magnesium sulfate for seizure prophylaxis and fetal neuroprotection: 4–6 g intravenous loading dose over 15–20 minutes, then 1 g/h infusion. Monitor deep tendon reflexes, respiratory rate (hold/reduce if under 12/min), urine output (hold if under 30 mL/h) and oxygen saturation; keep calcium gluconate 1 g IV at the bedside as the antidote. Continue for 24 hours after delivery.
Antihypertensives (target roughly 130–150/80–100 mmHg, treating systolic ≥160 or diastolic ≥110 promptly to reduce stroke risk): labetalol 10–20 mg IV, escalating every 10–20 minutes; or hydralazine 5–10 mg IV repeated every 20 minutes; or nifedipine 10 mg orally repeated as needed. Avoid ACE inhibitors, angiotensin receptor blockers and atenolol.
Do not give: diuretics for the hypertension, or a fluid load beyond maintenance (risk of pulmonary oedema). Restrict to roughly 80 mL/h total including infusions.
Also: place a Foley catheter, continuous fetal monitoring, and recheck platelets, LDH and liver enzymes every 6–8 hours because HELLP can progress rapidly.
2. The patient asks whether she can wait two days for steroids to 'help the baby's lungs'. How do you decide the timing of delivery?
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Give the corticosteroids and plan delivery within roughly 24–48 hours - not beyond it.
Give: betamethasone 12 mg intramuscularly, repeated once after 24 hours (or dexamethasone 6 mg every 12 hours for four doses). Antenatal corticosteroids reduce neonatal respiratory distress, intraventricular haemorrhage and mortality, and the benefit is measurable even when delivery occurs before the second dose is complete. Magnesium sulfate given for preeclampsia at this gestation also provides fetal neuroprotection.
But do not extend expectant management past 48 hours. At 30 weeks with severe features, the standard is delivery after a steroid window of 24–48 hours only if maternal and fetal status remain stable. This patient has RUQ pain, thrombocytopenia and transaminitis - features that can herald hepatic infarction, abruption or eclampsia. The risks of waiting accumulate: platelet counts can fall by more than 30% in 24 hours, and HELLP can progress to disseminated intravascular coagulation.
Deliver immediately, without waiting for steroids, if: non-reassuring fetal status, uncontrollable severe hypertension, eclampsia, abruption, pulmonary oedema, renal failure, suspected hepatic haemorrhage, or a rapidly falling platelet count.
Frame it for the patient: the steroid course is worth 24–48 hours, not a week; the team will reassess her platelet count and blood pressure twice daily and may need to deliver earlier.
3. How do you choose the mode of delivery and the anaesthetic plan with a platelet count of 88 ×10⁹/L?
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Mode. Vaginal delivery is preferred when the fetus is cephalic, the tracing is reassuring and there is no obstetric contraindication, because it avoids the added risks of caesarean section in a coagulopathic, hypertensive patient. At 30 weeks with a closed, 20% effaced cervix, induction will usually require cervical ripening - a transcervical balloon is a reasonable choice; misoprostol use is debated in the presence of thrombocytopenia and hepatic involvement, so follow local protocol. Caesarean section is indicated for non-reassuring fetal status, failed induction, abruption, eclampsia, or a malpresentation.
Anaesthesia. With platelets of 88 ×10⁹/L, neuraxial anaesthesia is generally acceptable - most obstetric anaesthetists proceed with a spinal or epidural at counts above roughly 70–80 ×10⁹/L provided coagulation is otherwise normal. Check fibrinogen (340 mg/dL here is reassuring) and a coagulation screen, and recheck the platelet count immediately before the procedure because it can fall quickly in HELLP. If the count drops below the agreed threshold or coagulation is abnormal, plan general anaesthesia and anticipate a difficult airway from oedema.
Postpartum. Continue magnesium for 24 hours, use oxytocin rather than ergometrine (which raises blood pressure), and use NSAIDs cautiously given the platelets and creatinine. Blood pressure often peaks on days 3–6 postpartum; arrange home monitoring and a review within a week, and counsel about eclampsia risk up to six weeks.