Aspirin is used in the prophylaxis of myocardial infarction because it results in:
Aspirin acts as an antiplatelet drug in MI. It inhibits cox enzyme and thus reduces the synthesis of TXA2. However it has no effect on the enzyme, thromboxane synthetase. Therefore, answer here is the inhibition of cox.
Inhibition of thromboxane synthetase
Inhibition of cyclooxygenase
Decreased serum lipids
Coronary steal phenomenon
NSAIDs, Gout and Rheumatoid Ahritis