In caring for a patient with a closed chest injury, what should be the first action taken by the EMR?

In the context of caring for a patient with a closed chest injury, the first action should involve taking BSI (Body Substance Isolation) precautions. This step is crucial because it protects both the responder and the patient from potential infection and contamination. BSI precautions ensure that the EMR is equipped with the appropriate personal protective equipment, such as gloves and possibly a mask, which is vital in maintaining safety during any care rendered.

Once BSI precautions are established, the responder can safely proceed with other necessary assessments and interventions, such as checking the patient's airway, monitoring vital signs, or administering oxygen. However, without first ensuring the safety of both the EMR and the patient through BSI precautions, there is a risk of exposure to bodily fluids, which could complicate the emergency response. Therefore, this step is a foundational practice that must be prioritized in emergency medical care.