Which statement about aspirin in emergency care is true?

• A. It prevents clotting
• B. It cures infection
• C. It lowers cholesterol
• D. It increases glucose

Answer: (A)

Aspirin in emergency care works by preventing clot formation through limiting platelet activity. It irreversibly blocks the enzyme cyclooxygenase-1 in platelets, which reduces the production of thromboxane A2, a chemical that promotes platelet aggregation and vasoconstriction. Because platelets can’t synthesize new COX-1, this anti-platelet effect lasts for the life of the platelet, helping to slow or stop the growth of a clot. This is especially important when a heart attack is suspected, as early aspirin use can reduce mortality by limiting clot formation. It does not cure infection, lower cholesterol, or raise glucose levels.