Platelet transfusion is indicated in ITP when a patient’s platelet count falls below which threshold to prevent spontaneous intracranial hemorrhage?

Platelet transfusion is indicated in ITP when a patient’s platelet count falls below which threshold to prevent spontaneous intracranial hemorrhage?

• A. <20,000
• B. <100,000
• C. <50,000
• D. <5,000

Answer: (A)

In immune thrombocytopenia, the main danger comes from bleeding when the platelet count is very low. Platelet transfusions aren’t routinely given because the autoantibodies that cause ITP destroy transfused platelets quickly, so they’re reserved for emergencies where there is life-threatening bleeding or before high-risk procedures. The threshold for using a transfusion to prevent spontaneous intracranial hemorrhage is a platelet count below 20,000 per microliter. At this level the risk of catastrophic brain bleeding rises enough that a temporary rise in platelets from a transfusion is warranted, even though the effect may be short-lived. Counts higher than this (like 50,000 or 100,000) are not typically transfused in the absence of active bleeding, and extremely low levels (around 5,000) would trigger urgent therapy beyond routine transfusion.

In immune thrombocytopenia, the main danger comes from bleeding when the platelet count is very low. Platelet transfusions aren’t routinely given because the autoantibodies that cause ITP destroy transfused platelets quickly, so they’re reserved for emergencies where there is life-threatening bleeding or before high-risk procedures. The threshold for using a transfusion to prevent spontaneous intracranial hemorrhage is a platelet count below 20,000 per microliter. At this level the risk of catastrophic brain bleeding rises enough that a temporary rise in platelets from a transfusion is warranted, even though the effect may be short-lived. Counts higher than this (like 50,000 or 100,000) are not typically transfused in the absence of active bleeding, and extremely low levels (around 5,000) would trigger urgent therapy beyond routine transfusion.