Which medication should be avoided in a child with ITP?

Which medication should be avoided in a child with ITP?

• A. Decongestants
• B. Aspirin
• C. Acetaminophen
• D. Sulfa drugs

Answer: (B)

In ITP, the platelets are already being destroyed and bleeding risk is higher, so anything that further impairs platelet function should be avoided. Aspirin irreversibly inhibits COX-1 in platelets, which lowers thromboxane A2 and stops aggregation. Since platelets can’t make new COX, this antiplatelet effect lasts for the life of the platelet (about a week). Even a small amount can meaningfully increase bleeding risk in a child with low platelets, making aspirin the one to avoid. For fever or pain, acetaminophen is preferred because it doesn’t affect platelets. Decongestants don’t primarily impact platelet function, and sulfa drugs may rarely cause drug-induced thrombocytopenia but that’s not the usual reason to avoid meds in ITP; the key point is avoiding aspirin due to its antiplatelet effects.

In ITP, the platelets are already being destroyed and bleeding risk is higher, so anything that further impairs platelet function should be avoided. Aspirin irreversibly inhibits COX-1 in platelets, which lowers thromboxane A2 and stops aggregation. Since platelets can’t make new COX, this antiplatelet effect lasts for the life of the platelet (about a week). Even a small amount can meaningfully increase bleeding risk in a child with low platelets, making aspirin the one to avoid. For fever or pain, acetaminophen is preferred because it doesn’t affect platelets. Decongestants don’t primarily impact platelet function, and sulfa drugs may rarely cause drug-induced thrombocytopenia but that’s not the usual reason to avoid meds in ITP; the key point is avoiding aspirin due to its antiplatelet effects.