Combined aspirin and clopidogrel therapy primarily affects which component of hemostasis?

Aspirin (COX-1 inhibition) and clopidogrel (P2Y12 inhibition) both impair platelet aggregation, so dual therapy markedly affects platelet function and increases bleeding risk.Other options: They do not act on clotting factors, fibrinolysis, or vitamin K like anticoagulants do.Key exam takeaway: Aspirin + clopidogrel = dual antiplatelet therapy (impaired platelet function).