Severe early-onset pre-eclampsia at 27 weeks with a rising creatinine
A 24-year-old G1P0 presents at 27+1 weeks with headache, visual blurring and epigastric pain. BP is 168/112 on two readings, urine protein:creatinine ratio is 95 mg/mmol, and she has 3+ protein on dipstick. Bloods show platelets 92 x 10^9/L, ALT 140 U/L, creatinine 118 micromol/L (booking 62), urate 0.48 mmol/L, and LDH 620 U/L. Ultrasound shows a single fetus with estimated weight on the 8th centile, absent end-diastolic flow in the umbilical artery, and a normal deepest vertical pocket. CTG is category 1. She is on no antihypertensives. The neonatal unit has cots from 27 weeks but no capacity for a 26-week infant.
1. How do you classify and stabilise her in the first 24 hours?
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This is severe pre-eclampsia with haemolysis, elevated liver enzymes and low platelets (HELLP), renal impairment and fetal growth restriction with absent end-diastolic flow. It is a maternal and fetal emergency even though the CTG is normal.
Stabilisation:
- Admit to a high-dependency setting with continuous maternal monitoring, strict fluid balance and hourly urine output.
- Treat BP: aim systolic 130-150 and diastolic 80-100 mmHg. Use labetalol intravenously or orally, or nifedipine; avoid sudden drops that could worsen placental perfusion. Hydralazine is an alternative.
- Give magnesium sulphate 4 g loading dose then 1 g/hour for seizure prophylaxis, with monitoring of reflexes, respiratory rate and urine output; reduce the dose in renal impairment.
- Give antenatal corticosteroids (betamethasone) and magnesium sulphate for fetal neuroprotection if delivery before 32 weeks is anticipated.
- Avoid ergometrine postpartum and be alert to pulmonary oedema; restrict fluids to about 80 mL/hour unless there is hypovolaemia or haemorrhage.
- Repeat bloods 6-12 hourly, monitor for HELLP progression, and involve senior obstetrics, anaesthetics, neonatology and nephrology.
- Document a plan for delivery if there is maternal deterioration, uncontrollable BP, platelet fall, renal deterioration, abruption or non-reassuring CTG.
2. The CTG remains normal but platelets fall to 78 and creatinine rises to 145 over 12 hours. What is your decision about timing and mode of delivery, and how do you justify it?
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The trend indicates progressive maternal organ dysfunction. Delivery is indicated; the question is timing and mode.
Reasoning:
- At 27 weeks, expectant management can be justified in a stable mother with a normal CTG to gain steroid benefit, but falling platelets and rising creatinine show deteriorating maternal disease. Continuing risks eclampsia, renal failure, abruption and fetal death.
- Steroids need 24-48 hours for maximal effect; if she has had the first dose and is stable enough, a short delay of up to 24 hours may be reasonable, but not at the cost of maternal deterioration.
- Delivery should occur once steroids have had time to act and the neonatal unit can accept the infant. If the neonatal unit cannot accept a 26-week infant, transfer to a centre that can, or deliver at 27 weeks where a cot is available.
Mode:
- Caesarean is usual for severe disease with an unfavourable cervix and fetal growth restriction, but vaginal birth can be considered if the cervix is favourable and the fetus tolerates labour.
- Anaesthetic assessment is essential; regional anaesthesia is preferred if platelets allow, otherwise general anaesthesia.
- Prepare for postpartum haemorrhage, and avoid ergometrine.
- The neonatology team must be present at delivery; document the discussion with the parents about prognosis at 27 weeks.
3. She asks what this means for her future health and future pregnancies. Counsel her.
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Future health:
- Pre-eclampsia and HELLP increase her lifetime risk of hypertension, ischaemic heart disease, stroke and type 2 diabetes. Advise cardiovascular risk assessment, BP and lipid checks, weight management, exercise and smoking cessation, and tell her GP about the pregnancy history.
- Renal function should be rechecked after delivery; most recover, but persistent impairment needs nephrology follow-up.
- Recurrence of pre-eclampsia is roughly 15-25% overall, higher if she has another pregnancy with a different partner or if she has underlying hypertension or renal disease.
Future pregnancies:
- Preconception counselling: optimise BP, weight and renal function, and stop any teratogenic drugs.
- Start low-dose aspirin (75-150 mg) from 12 weeks, and consider calcium supplementation if intake is low.
- Plan early booking and delivery in a unit with neonatal intensive care; serial growth scans and BP monitoring.
- Delivery timing will be individualised but recurrence tends to be later and milder if the first pregnancy was early-onset.
Emotional support: acknowledge the trauma of a very preterm birth and offer debriefing and psychological support.