For which client is antiplatelet therapy indicated?

A. A client needing stroke prevention: Antiplatelet therapy is indicated for clients at risk of ischemic stroke or recurrent stroke because it helps prevent platelet aggregation, reducing the likelihood of clot formation in the arteries. This intervention is especially beneficial in clients with a history of transient ischemic attacks or atherosclerotic cardiovascular disease. B. A client with a vitamin K deficiency: Vitamin K deficiency primarily affects clotting factor synthesis, leading to a bleeding tendency. Antiplatelet therapy would increase the risk of bleeding in these clients, making it contraindicated rather than indicated. C. A client with a low platelet count: Clients with thrombocytopenia are already at risk for bleeding, and antiplatelet therapy would further impair clot formation, increasing the potential for hemorrhage. It is therefore avoided in these situations. D. A client diagnosed with leukemia: Leukemia can be associated with low platelet counts or abnormal platelet function, placing the client at risk for bleeding. Administering antiplatelet therapy could exacerbate hemorrhagic complications rather than provide benefit.