What action is recommended if a patient is showing signs of severe allergic reaction?

When a patient exhibits signs of a severe allergic reaction, commonly known as anaphylaxis, it is crucial to initiate the appropriate chain of care quickly. Calling for advanced medical help is essential because severe allergic reactions can escalate rapidly and be life-threatening. Advanced medical personnel can administer medications such as epinephrine, which is critical for reversing the effects of anaphylaxis.

While administering oxygen might be appropriate in certain situations, it does not address the underlying issue of the allergic reaction itself. Asking the patient about allergies may provide valuable information, but it should not delay the call for help, especially when the signs are already evident. Offering water to the patient is typically discouraged, especially in cases where the airway is compromised or if the patient is having difficulty breathing, as it could lead to choking.

In sum, calling for advanced medical assistance is the most effective and critical action to ensure the patient receives timely and appropriate treatment for a severe allergic reaction.