Severe-Range Blood Pressure at 33 Weeks: Deliver, Wait, or Discharge?

Go criterion by criterion rather than reacting to the diagnosis of preeclampsia alone.

• Blood pressure: severe-range is systolic ≥160 or diastolic ≥110. The 162/104 qualifies on the systolic, but a severe-range reading must be confirmed - typically repeat within 15 minutes. The 156/98 does not qualify. So the classification rests on documented persistence of systolic ≥160.
• Platelets: severe feature requires <100,000. At 118,000 she is thrombocytopenic by some definitions but does not meet this criterion; trend it.
• Liver: AST 58 and ALT 64 are elevated but not >2x the upper limit of normal, so not a severe feature today.
• Creatinine: 0.8 is normal; severe feature requires >1.1.
• Symptoms: headache responsive to acetaminophen and no visual or RUQ symptoms do not count.

So she has severe features by blood pressure only - which is enough. Delivery is recommended at ≥34 weeks for any severe feature, and at 33w4d with severe-range pressures the standard is antenatal corticosteroids, magnesium sulfate for seizure prophylaxis, antihypertensives, and delivery after the steroid window (24–48 hours) provided she stays stable on continuous monitoring. Expectant management beyond that is reserved for a stable patient in a tertiary center, and is contraindicated with uncontrollable severe hypertension, pulmonary edema, abruption, DIC, nonreassuring fetal status, or HELLP.

Capacity-based informed refusal, not a signature on a form.

1. Treat the reversible barriers first. Her stated reason is childcare. Ask directly whether that is the real objection, involve social work and the charge nurse, and offer concrete solutions (child life, family members, hospital sitter, transport for the partner). Many 'refusals' dissolve when the logistics are addressed.
2. Confirm capacity to refuse. She must understand the diagnosis, the risk, and the alternative. Altered mentation from a headache, magnesium, or evolving encephalopathy means she cannot refuse for herself - escalate to the provider immediately.
3. State the specific risks in plain language: seizure and stroke, placental abruption, fetal growth failure and stillbirth, and the fact that at 33–34 weeks the baby would very likely do well if delivered now. Note that home monitoring is not an equivalent alternative.
4. Involve the attending and document the conversation, who was present, the specific risks explained, her questions, her decision, and that she demonstrated understanding. Use the AMA process per policy; never simply discharge from triage.
5. If she leaves, give written return precautions (severe headache, visual change, RUQ pain, bleeding, decreased fetal movement, BP ≥160/110) and a follow-up appointment within 24–48 hours. Set up a safety-net call.

1. Magnesium sulfate for seizure prophylaxis

• Regimen: 4–6 g IV loading dose over 15–20 minutes, then 1–2 g/hour.
• Monitor: deep tendon reflexes, respiratory rate (hold and notify if <12/min), urine output (≥30 mL/hr), and level of consciousness. Serum levels are not routine - draw them only for signs of toxicity, and know that the antidote is calcium gluconate 1 g IV.
• Magnesium is not a blood pressure drug; do not expect it to fix the 160s.

2. Antihypertensives for severe-range pressures

• First-line: labetalol 20 mg IV, escalating to 40 then 80 mg; alternatives are hydralazine 5–10 mg IV or nifedipine 10 mg PO.
• Target roughly 130–150/80–100: the goal is preventing stroke and maternal end-organ injury, not normalizing the pressure, which can cause fetal compromise from reduced uteroplacental perfusion.
• Confirm a severe-range reading within 15 minutes and reassess after each dose.

Simultaneously give betamethasone 12 mg IM now and again in 24 hours, and start continuous fetal and contraction monitoring because both magnesium and rapid blood pressure lowering can change the tracing.