ABPS Anesthesiology (BCA) study materials
ABPS Anesthesiology (BCA) study resources

HELLP, Thrombocytopenia, and a Category-1 Cesarean

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HELLP, Thrombocytopenia, and a Category-1 Cesarean

A 29-year-old G1P0 at 34+2 weeks presents with severe preeclampsia: BP 172/110 mmHg, headache, visual scotomata, RUQ pain. Labs: platelets 78,000/µL (142,000 six hours earlier), AST 220, ALT 198, LDH 940, fibrinogen 190 mg/dL, creatinine 1.0. Magnesium sulfate is infusing, and she has received labetalol 20 mg IV twice. The fetal heart tracing now shows a prolonged deceleration to 85 bpm lasting 4 minutes with minimal variability. The obstetrician calls for an immediate cesarean delivery and asks you to 'put in a spinal because her airway looks swollen.' On exam she has a Mallampati 3 airway, mild facial edema, and mouth opening of 3 cm.

1. Neuraxial or general anesthesia? Weigh the competing risks with the platelet count and its trend.

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I would choose general anesthesia for this category-1 delivery.

Neuraxial argument: A single-shot spinal avoids airway manipulation in a patient with facial edema and a Mallampati 3 airway, avoids the pressor response to laryngoscopy, and lets the mother be awake. Many centers would accept a stable platelet count above 70,000–80,000/µL for a single-shot spinal if there is no coagulopathy.

Why I would not do it here:

  • The platelet count fell from 142,000 to 78,000 in six hours. That trajectory suggests ongoing consumption and possible progression to DIC; the count at the time of the block may be lower.
  • The fibrinogen is 190 mg/dL, which is low-normal and falling.
  • A spinal or epidural hematoma in this setting is catastrophic and unrecoverable in a busy obstetric unit.

Counterweights: The airway is not normal. General anesthesia carries a risk of failed intubation and aspiration, so it must be done with full preparation: videolaryngoscope, a smaller tube, suction, a supraglottic airway, and a surgeon ready for cricothyrotomy.

Middle path: if I wanted to reconsider neuraxial, I would need a stat fibrinogen and viscoelastic testing, a stable platelet count, and no clinical bleeding, none of which is available now. With a 4-minute deceleration, I would not wait.

2. Describe your general anesthetic induction and airway plan for this patient.

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Preparation:

  • Aspiration prophylaxis: sodium citrate and metoclopramide; left uterine displacement
  • Two anesthesia providers, difficult-airway cart, videolaryngoscope, bougie, 6.0–6.5 mm tubes, second-generation supraglottic airway, and the surgeon standing by for an emergency airway
  • Arterial line before or immediately after induction; large-bore IV access; blood products available

Induction:

  • Preoxygenate for 3–5 minutes; consider apneic oxygenation
  • Rapid sequence induction with propofol (reduced dose, about 1.5–2 mg/kg, given possible hypovolemia) and rocuronium 1.2 mg/kg; magnesium potentiates neuromuscular blockade, so titrate with train-of-four
  • Attenuate the pressor response with remifentanil or esmolol/labetalol, but avoid hypotension that worsens uteroplacental perfusion
  • Video laryngoscopy with a glide scope and a smaller tube; confirm with waveform capnography

Maintenance:

  • Volatile agent plus a phenylephrine infusion to keep MAP near baseline; avoid ergots
  • After delivery, oxytocin infusion; avoid bolus oxytocin-induced hypotension

Emergence: Extubate awake only after assessing for airway edema (leak test) and with reintubation equipment available; otherwise keep her intubated and sedated.

3. What are the key postpartum considerations and monitoring needs?

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Immediate:

  • ICU or high-dependency bed with continuous monitoring for at least 24 hours
  • Continue magnesium sulfate for seizure prophylaxis for 24 hours; monitor reflexes, respiratory rate, urine output, and magnesium levels
  • Strict fluid balance: preeclamptic patients are at risk of pulmonary edema, so avoid fluid overload and monitor SpO2 and lung sounds

Hematologic and hepatic:

  • Trend platelets, fibrinogen, LDH, AST/ALT, and creatinine; watch for DIC and for hepatic rupture (sudden RUQ or shoulder pain, shock)
  • Transfuse platelets if there is active bleeding or before another procedure; coordinate with hematology

Blood pressure and medications:

  • Continue nicardipine or labetalol infusions to keep BP below about 150/100 mmHg; avoid NSAIDs, which worsen hypertension and renal function, and use acetaminophen and opioids
  • Start VTE prophylaxis after coagulation is assessed and bleeding risk is acceptable

Other:

  • Monitor for postpartum hemorrhage (uterine atony is common), and keep uterotonics available
  • Assess the neonate and support breastfeeding with magnesium-compatible analgesia
  • Debrief the team about the airway plan and the decision to avoid neuraxial anesthesia, and document the reasoning