Which action should a nurse take first if a client develops signs of an acute allergic reaction?

When a client shows signs of an acute allergic reaction, the nurse's initial priority should be to perform a focused assessment. This step is crucial as it allows the nurse to quickly evaluate the severity and specific symptoms of the allergic reaction, such as respiratory distress, hives, or swelling. By conducting a thorough assessment, the nurse can determine whether the situation is life-threatening, which would necessitate more immediate interventions.

After assessing, the nurse can then decide on the appropriate actions based on the client's condition. For example, if the assessment indicates anaphylaxis, the nurse can take rapid actions such as administering epinephrine if it's available and within their scope of practice. This assessment phase is essential for guiding the response to the allergic reaction effectively.

In contrast, while administering antihistamines, contacting the healthcare provider for orders, or obtaining vital signs are all important steps in managing an allergic reaction, they should follow the initial assessment to inform the next steps based on the client's specific needs and situation.