ST-segment elevation myocardial infarction (STEMI) is a life-threatening disease that can result in irreversible myocardial damage when untreated. Delays in treatment, on the order of minutes are associated with increased mortality and worsening cardiac functional outcomes.To facilitate rapid treatment, international guidelines recommend that out-of-hospital clinicians refer patients with symptoms suggestive of STEMI to an emergency department directly or via emergency medical service(EMS) transport.These guidelines recommend the acquisition and diagnostic interpretation of an ECG within 10 minutes of emergency department (ED) arrival.”