How should a nurse respond to a patient experiencing anaphylaxis?

• A. Administer antihistamines and observe the patient
• B. Administer epinephrine immediately and call for emergency assistance
• C. Apply cold packs and monitor vital signs
• D. Encourage the patient to breathe deeply and calm down

Answer: (B)

In cases of anaphylaxis, the immediate administration of epinephrine is critical as it counteracts the severe allergic reaction. Anaphylaxis is characterized by symptoms such as airway constriction, swelling, and a rapid drop in blood pressure, which can lead to life-threatening situations. Epinephrine works quickly by causing blood vessels to constrict, which helps to increase blood pressure, and it also relaxes the muscles in the airways to improve breathing.

Calling for emergency assistance is equally important because, after administering epinephrine, the patient needs to be monitored closely and potentially require further medical treatment. The rapid response is essential to prevent complications or fatal outcomes.

While other options may seem beneficial, administering antihistamines alone would not address the immediate dangers of anaphylaxis, as their effects are slower. Applying cold packs could potentially worsen the situation by providing no real help to the airway or blood pressure, and encouraging deep breathing without treating the underlying anaphylactic reaction is insufficient and can provide a false sense of security.