In light of the presence of numerous risk factors for coronary artery disease, a client's primary care provider has recommended that he take low-dose (81 mg) aspirin once daily
Doing so will reduce the client's risk of myocardial infarction by altering which of the following stages of hemostasis?
A) Vessel spasm
B) Platelet plug formation
C) Blood coagulation
D) Clot lysis
Ans: B
Feedback:
Aspirin produces irreversible acetylation of platelet cyclooxygenase activity and consequently the synthesis of thromboxane A2 (TXA2), which is required for platelet aggregation. Aspirin does not directly influence vessel spasm, coagulation of blood, or clot dissolution.
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