NURS 6501: Final Exam: Please contact Assignment Samurai for help with NURS 6501: Final Exam or any other assignment. Email: assignmentsamurai@gmail.com In a pediatric patient with severe immune thrombocytopenic purpura (ITP) and a platelet count below 10,000/µL, why are intravenous immunoglobulin (IVIG) and steroids typically given, while platelet transfusions are reserved for life-threatening bleeding? Group of answer choices

• Platelets are almost immediately destroyed by the autoimmune process.
• Platelet transfusions can worsen the thrombocytopenia.
• IVIG and steroids directly increase platelet production.
• Platelets can induce an allergic reaction.

  The correct answer is: Platelets are almost immediately destroyed by the autoimmune process.   Explanation: In immune thrombocytopenic purpura (ITP), the autoimmune destruction of platelets (mediated by antiplatelet antibodies) makes platelet transfusions ineffective unless absolutely necessary for life-threatening bleeding. Key Treatment Principles:

1. IVIG:
   • Blocks Fc receptors in the spleen/liver, preventing platelet destruction.
   • Provides a rapid but temporary rise in platelet count (within 24–48 hours).
2. Steroids (e.g., prednisone):
   • Suppress antibody production and reduce splenic clearance of platelets.
   • Slower onset but more sustained effect than IVIG.
3. Platelet transfusions:
   • Not first-line because transfused platelets are quickly destroyed by the same autoimmune process.
   • Reserved for severe bleeding (e.g., intracranial hemorrhage).

Why Not the Others?

• "Platelet transfusions worsen thrombocytopenia": Incorrect—they don’t exacerbate the disease but are ineffective due to rapid destruction.
• "IVIG/steroids directly increase production": No—they reduce destruction (bone marrow production is usually normal in ITP).
• "Platelets induce allergic reactions": Rare and unrelated to ITP pathophysiology.

Takeaway: IVIG + steroids target the autoimmune mechanism, while platelet transfusions are a last resort due to their short-lived benefit. Thus, the immediate destruction of transfused platelets is the primary reason for avoiding them in stable ITP.