A client is showing signs of an allergic reaction to the antibiotic that is infusing. What is the nurse's priority action?

When a client exhibits signs of an allergic reaction to an antibiotic infusion, the nurse's priority action is to stop the medication infusion. This is crucial because continuing to administer the antibiotic could exacerbate the reaction, potentially leading to more severe symptoms or complications such as anaphylaxis, which can be life-threatening. By promptly stopping the infusion, the nurse can mitigate the effects of the allergen and initiate appropriate interventions to manage the client's condition.

After stopping the infusion, the nurse would typically assess the client further and provide supportive care, such as administering antihistamines or other medications as ordered by the healthcare provider. It is important to ensure patient safety and address any emerging symptoms of the allergic reaction. In cases where the reaction is severe, additional measures such as alerting a rapid response team may also be necessary, but the immediate priority is always to cease the infusion of the offending agent.