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How can aspirin interfere with normal platelet function?

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blood disease Peripheral blood smear revealing histopathologic features indicative of a blast crisis in a case of chronic myelogenous leukemia (CML). Blast crisis occurs when one-fifth to one-third of the cells in the blood or bone marrow are immature blood cells, or blast cells. This phase of CML is characterized by fever, weakness, and an enlarged spleen.

Aspirin interferes with normal platelet function primarily by inhibiting the production of specific chemicals necessary for blood clotting.1

Specifically, aspirin acts as an antiplatelet drug by inhibiting the enzyme cyclooxygenase, which is required for the synthesis of prostaglandins and thromboxane A $_{2}$ . Thromboxane A $_{2}$ is a substance secreted by platelets that promotes their aggregation and helps diminish blood loss. By reducing the production of these substances, aspirin impairs the ability of platelets to aggregate and form a clot (thrombus) within a blood vessel.123

While this mechanism is useful for preventing clots in conditions like heart attack or stroke, it can also lead to acquired disorders of platelet function, potentially resulting in an increased risk of bleeding. Because of its widespread use, aspirin is considered a significant factor in drug-induced platelet dysfunction.13