Platelet Transfusion Thresholds in Adults
Prophylactic Transfusion for Stable Hypoproliferative Thrombocytopenia
Hospitalized patients receiving chemotherapy or undergoing allogeneic stem‑cell transplantation
Procedure‑Based Transfusion Thresholds
Low‑Risk Procedures
Moderate‑Risk Procedures
High‑Risk Procedures
Cardiac Surgery with Cardiopulmonary Bypass
Critical Operational Pitfalls
Prophylactic Platelet Transfusion Dosing in Hospitalized Adults
Recommended Prophylactic Dose
- For hospitalized adults with therapy‑induced hypoproliferative thrombocytopenia, a single apheresis unit (or an equivalent pool of 4–6 whole‑blood‑derived platelet concentrates containing approximately 3–4 × 10¹¹ platelets) provides adequate prophylactic platelet support. 10
Platelet Count Targets for Active Bleeding
- In patients with WHO grade ≥ 2 active bleeding, aim to keep platelet counts > 50 × 10⁹/L when bleeding is severe, or > 30 × 10⁹/L when bleeding is less severe; the required transfusion dose should be guided by the post‑transfusion platelet count rather than a predetermined formula. 11
- The dose to achieve these targets must be individualized based on the observed post‑transfusion platelet increment, ensuring the target count is reached before major procedures. 11