Which medication is an antiplatelet agent, commonly used at 81 mg daily to prevent myocardial infarction?

Aspirin is indeed an antiplatelet agent that is commonly prescribed at a low dose, such as 81 mg daily, to help prevent myocardial infarction (heart attack). It works by inhibiting the aggregation of platelets, which is a crucial step in the formation of blood clots. By preventing platelets from clumping together, aspirin reduces the risk of clogged arteries, thereby providing cardioprotective effects.

In the context of myocardial infarction prevention, aspirin is often recommended for patients who have a history of heart disease, or who are at high risk for cardiovascular events. Its mechanism of action involves blocking the enzyme cyclooxygenase (COX), which leads to a decrease in the production of thromboxane A2, a potent promoter of platelet aggregation.

Understanding the role of aspirin as a preventive measure is important for healthcare providers as it allows them to make informed decisions regarding the management of patients' cardiovascular health.