What is the first action in the management of suspected acute coronary syndrome with chest pain?

• A. Administer nitroglycerin immediately without assessment.
• B. Call the rapid response team only after diagnostic testing.
• C. Administer morphine first.
• D. Assess ABCs, monitor the patient, obtain an ECG, and administer aspirin as indicated while mobilizing rapid response.

Answer: (D)

In suspected acute coronary syndrome with chest pain, the immediate goal is to stabilize the patient while rapidly identifying the type of ACS to guide urgent treatment. The first action is to assess airway, breathing, and circulation, and to keep the patient on continuous monitoring with IV access. A 12-lead ECG should be obtained as soon as possible, because it quickly distinguishes a STEMI from other ACS types and drives the urgency of reperfusion therapy. At the same time, administer aspirin as indicated (chewed if not contraindicated) because early platelet inhibition reduces mortality and improves outcomes. While preparing for definitive treatment, activate the rapid-response or STEMI protocol so the team can mobilize reperfusion resources without delay.

Giving nitroglycerin or morphine before this initial evaluation can be risky: nitroglycerin may cause dangerous hypotension or be inappropriate in certain ACS contexts, and morphine’s benefit is uncertain with potential respiratory suppression and delays in definitive therapy. Keeping the focus on stabilization, rapid diagnosis, early antiplatelet therapy, and escalation of care explains why this sequence is the best first action.