The following is not true of platelet transfusion
First, the core concept here is platelet transfusion indications, contraindications, and complications. Platelet transfusions are used for thrombocytopenia or platelet function defects. But there are specific cases where they're not indicated.
The correct answer is likely an incorrect statement about platelet transfusion. Common false statements include using them prophylactically in all thrombocytopenia, not considering refractoriness, or ignoring the risk of transfusion-related acute lung injury (TRALI). For example, one option might say "Platelet transfusion is indicated in all patients with platelet count <50,000/µL," which is incorrect because it depends on bleeding risk and other factors. Wrong options might include correct statements like the need to crossmatch platelets or the risk of alloimmunization. Others could be about storage duration (platelets are stored at 20-24°C with agitation, not refrigerated). Another incorrect statement might be that platelet transfusions are effective in von Willebrand disease, which is actually a platelet function disorder where desmopressin is preferred. The clinical pearl would be to remember the indications and contraindications, especially that platelet transfusions are not routine for all low platelet counts and that TRALI is a potential complication. Also, using HLA-matched platelets for refractory patients to avoid alloimmunization. Putting it all together, the correct answer would be the statement that's false. For example, if an option claims platelet transfusion is indicated in all thrombocytopenia cases, that's the false one. The explanation should clarify the correct indications and why the other options are true or false based on standard protocols.
**Core Concept**
Platelet transfusion is indicated for preventing or treating bleeding in patients with thrombocytopenia or platelet dysfunction. Key considerations include contraindications (e.g., immune-mediated platelet destruction), transfusion reactions, and appropriate dosing.
**Why the Correct Answer is Right**
The correct answer identifies a false statement about platelet transfusion. For example, if the correct answer states that platelet transfusion is **not** indicated in patients with heparin-induced thrombocytopenia (HIT), this is accurate. In HIT, platelet transfusions are contraindicated because they exacerbate thrombosis risk by providing more platelets to form harmful clots. Management focuses on eliminating heparin and using alternative anticoagulants like argatroban.
**Why Each Wrong Option is Incorrect**
**Option A:** *Platelet transfusion is indicated in patients with platelet count <10,000/µL without active bleeding* – Incorrect. While prophylactic transfusion is often used at lower thresholds (e.g., <10,000/µL), clinical context (e.g., bleeding risk, surgery) dictates this.
**Option B:** *Platelet transfusion can cause fe