How fast should you obtain a 12 Lead in a patient suspected of a STEMI?

• A. Within 5 minutes of patient contact
• B. Within 10 minutes of patient contact
• C. Within 15 minutes of patient contact
• D. Before leaving the scene

Answer: (A)

In suspected STEMI, the most important action is rapid diagnosis to activate reperfusion promptly. A 12-lead ECG is the key tool to identify STEMI patterns and mobilize the cath lab and prehospital care without delay. The target is to obtain the 12-lead within five minutes of first patient contact. This tight window minimizes heart muscle damage by shortening the time to definitive treatment, enables faster hospital notification, and helps streamline transport decisions. Delays beyond this window increase ischemic time and worsen outcomes, and waiting to obtain it only before leaving the scene can still miss the critical early window.