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Difficulty: MediumObstetric Complications

A primigravid patient at 3636 weeks gestation comes to the emergency department reporting a 66-hour history of severe, persistent pain in her right upper abdomen accompanied by nausea. The 2929-year-old reports typical fetal movement and no fluid leakage or uterine contractions. Vital signs include a blood pressure of 162/105 mm Hg162/105\text{ mm Hg}, a heart rate of 92/min92/\text{min}, and a temperature of 37.0∘C37.0^\circ\text{C} (98.6∘F98.6^\circ\text{F}). On physical examination, there is noticeable swelling of the hands and face, along with significant tenderness in the right upper abdominal quadrant. The fetal heart rate tracing is Category I, showing a baseline of 145/min145/\text{min}, moderate variability, and positive accelerations.

Laboratory results are as follows:

ParameterResult
Hemoglobin9.8 g/dL9.8\text{ g/dL}
Platelets82,000/mm382,000/\text{mm}^3
Aspartate aminotransferase (AST)145 U/L145\text{ U/L}
Alanine aminotransferase (ALT)130 U/L130\text{ U/L}

Which of the following is the most appropriate next step in the management of this patient?

  1. Administration of intravenous magnesium sulfate and induction of laborAnswer
  2. B
    Discharge home with oral labetalol and close outpatient follow-up
  3. C
    Immediate surgical delivery via cesarean section
  4. D
    Administration of intramuscular betamethasone and reassessment in 4848 hours
  5. E
    Computed tomography scan of the abdomen to evaluate for hepatic rupture

Answer

Administration of intravenous magnesium sulfate and induction of labor
The correct approach involves stabilizing the mother with intravenous magnesium sulfate for seizure prophylaxis and promptly proceeding with induction of labor. This patient has HELLP (Hemolysis, Elevated Liver enzymes, Low Platelets) syndrome, a severe variant of preeclampsia. Because she is beyond 34 weeks gestation, immediate delivery is the definitive treatment. A reassuring Category I fetal heart rate tracing indicates that a trial of vaginal delivery is safe and preferred over the surgical risks associated with a cesarean section, especially given her thrombocytopenia.

Step-by-Step Solution

1
Evaluate the patient's clinical presentation and laboratory values.
The combination of right upper quadrant pain, hypertension, thrombocytopenia (82,000/mm382,000/\text{mm}^3), and elevated transaminases establishes the diagnosis of HELLP syndrome.
Accurate diagnosis is required to recognize the severity of the obstetric emergency.
2
Determine the gestational age and fetal status.
The patient is at 3636 weeks gestation, and the fetal heart rate tracing is Category I (reassuring).
Gestational age and fetal stability dictate the timing and mode of delivery.
3
Select the appropriate management strategy based on the diagnosis and gestational age.
Delivery is definitively indicated for HELLP syndrome at ≥34\geq 34 weeks. Magnesium sulfate is administered for seizure prophylaxis, and induction of labor is chosen over cesarean delivery due to reassuring fetal status.
Expediting delivery removes the underlying cause of HELLP syndrome while minimizing surgical risks when possible.

Key Concept

Management of HELLP syndrome at ≥34\geq 34 weeks gestation
Estimated Time:1m 30s
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Topics

Obstetric Complications

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