Final answer:
The EMT's role in caring for a patient with chest pain is to treat the patient as though he were having a heart attack.
Step-by-step explanation:
The EMT's role in caring for a patient with chest pain is to treat the patient as though he were having a heart attack. While interpreting the patient's cardiac rhythm and determining the cause of the chest pain are important tasks, providing automatic external defibrillation is not typically within the EMT's scope of practice. The primary focus is on providing immediate care and stabilizing the patient until they can be transported to a hospital.