What is the standard route for the aspirin dose used in acute management?

What is the standard route for the aspirin dose used in acute management?

• A. IV
• B. IM
• C. PO (chewed)
• D. Subcutaneous

Answer: (C)

In acute management of suspected myocardial infarction or acute coronary syndrome, the goal is to rapidly inhibit platelets to reduce ongoing thrombosis. Aspirin works by irreversibly inhibiting COX-1 in platelets, so getting a rapid antiplatelet effect is crucial. Chewed oral aspirin achieves the fastest onset among practical routes because chewing increases surface area and speeds absorption, leading to quicker platelet inhibition than a swallowed tablet. The standard approach is a single chewable dose of non-enteric-coated aspirin in the 160–325 mg range. Other routes (IV, IM, subcutaneous) do not provide the same rapid, reliable onset for this purpose, and are not the preferred method for this initial dosing.

In acute management of suspected myocardial infarction or acute coronary syndrome, the goal is to rapidly inhibit platelets to reduce ongoing thrombosis. Aspirin works by irreversibly inhibiting COX-1 in platelets, so getting a rapid antiplatelet effect is crucial. Chewed oral aspirin achieves the fastest onset among practical routes because chewing increases surface area and speeds absorption, leading to quicker platelet inhibition than a swallowed tablet. The standard approach is a single chewable dose of non-enteric-coated aspirin in the 160–325 mg range. Other routes (IV, IM, subcutaneous) do not provide the same rapid, reliable onset for this purpose, and are not the preferred method for this initial dosing.