A 12-year-old boy with sickle cell anemia (HbSS) presents with sudden severe pain in his femora, lumbar spine, and chest. He is afebrile. Vital signs are stable, and oxygen saturation is 98% on room air. What is the first-line pharmacotherapeutic priority in this acute vaso-occlusive crisis (pain crisis)?

Answer and explanation

Correct answer: A. Prompt, individualized, scheduled opioid analgesia and aggressive hydration

  1. Step 1: Acute painful vaso-occlusive crisis in sickle cell disease results from microvascular obstruction by sickled erythrocytes causing tissue ischemia.
  2. Step 2: Guidelines prioritize prompt administration of parenteral opioids (e.g., morphine) within 30-60 minutes of triage, alongside oral or IV hydration.
Answer
Prompt, individualized, scheduled opioid analgesia and aggressive hydration.
Why not the others: 'Immediate prophylactic exchange blood transfusion' is reserved for acute chest syndrome, stroke, or multi-organ failure, not uncomplicated pain crises; 'High-dose intravenous corticosteroid pulse therapy' is associated with severe rebound pain crises and is not recommended; 'Oral hydroxyurea initiation for acute analgesia' is a chronic disease-modifying therapy that takes months to increase HbF.

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