What is the first step in dealing with a patient experiencing a severe allergic reaction?

The first step in dealing with a patient experiencing a severe allergic reaction is to call for emergency medical assistance. This action is crucial because a severe allergic reaction, also known as anaphylaxis, can quickly become life-threatening. Emergency medical personnel are trained to provide the necessary treatment, which may include administering epinephrine, oxygen, or other critical interventions that cannot be provided in a routine clinical setting.

While ensuring that the patient is seated comfortably can help alleviate anxiety and promote breathing, it does not address the critical need for immediate medical support in severe cases. Administering CPR is appropriate only if the patient is unresponsive and not breathing, which would be a secondary response to anaphylaxis, not the immediate first step. Offering the patient something to eat is inappropriate and potentially dangerous, as it could exacerbate the allergic reaction or lead to choking if the patient is experiencing difficulty breathing or swallowing. Hence, calling for emergency medical assistance focuses on getting the patient the right help as quickly as possible, prioritizing their safety and well-being.