What are typical platelet transfusion thresholds in a stable pediatric chemotherapy patient?

• A. Transfuse for platelets <10,000/µL, or <20,000/µL with bleeding or planned invasive procedure.
• B. Transfuse for platelets <50,000/µL.
• C. Transfuse after every minor procedure.
• D. Do not transfuse platelets.

Answer: (A)

Bleeding risk and procedural planning drive when to transfuse platelets. In a stable pediatric cancer patient, the typical approach is prophylactic transfusion when platelets fall below 10,000 per microliter to prevent spontaneous mucosal and other bleeding. If there is active bleeding or an upcoming invasive procedure, the threshold is raised to about 20,000/µL to provide adequate hemostasis for those risks.

So the best choice reflects that pattern: transfuse at <10,000/µL, or at <20,000/µL if there is bleeding or a planned invasive procedure.

Higher thresholds like <50,000/µL are not routinely used in stable patients and would lead to unnecessary transfusions. Transfusing after every minor procedure isn’t standard practice because many minor procedures can be performed safely at lower platelet counts, and simply having a minor procedure doesn’t automatically trigger transfusion. Saying not to transfuse at all ignores the real bleeding risk with very low platelets.