What is the initial treatment order for a heart attack?

• A. Oxygen, Morphine, Nitroglycerin, Aspirin
• B. Nitroglycerin, Oxygen, Aspirin, Morphine
• C. Oxygen, Nitroglycerin, Aspirin, Morphine
• D. Oxygen, Aspirin, Nitroglycerin, Morphine

Answer: (C)

The main idea is to quickly relieve ischemia and prevent further damage in suspected heart attack by a cautious, stepwise approach that also provides pain relief and antithrombotic protection. Start with supplemental oxygen only if the patient is hypoxemic or in respiratory distress, since higher oxygen delivery helps the myocardium when oxygen levels are low. Next, give nitroglycerin to dilate veins, reduce preload, and lower myocardial oxygen demand, which can relieve chest pain and improve oxygen balance—provided the patient isn’t hypotensive and has no contraindications. Then administer aspirin as soon as ACS is suspected, chewed to maximize absorption, to inhibit platelet aggregation and limit thrombus growth. If pain persists after nitrates, use morphine for analgesia and to reduce sympathetic drive, but monitor closely for drops in blood pressure or other side effects and avoid routine use if not needed. This sequence aims for rapid ischemia relief, early antiplatelet effect, and controlled pain management.