What should the nurse do if a patient shows signs of an allergic reaction to medication?

When a patient shows signs of an allergic reaction to medication, the most appropriate action a nurse should take is to notify the physician immediately. This is crucial because allergic reactions can escalate quickly and may lead to severe complications, such as anaphylaxis, which requires prompt medical intervention. By informing the physician, the nurse ensures that the patient receives the necessary evaluation and treatment, which may include the administration of antihistamines, corticosteroids, or other measures to manage the allergic response effectively.

Continuing to administer the medication, monitoring for further symptoms, or documenting the reaction in the patient's record, while important aspects of patient care, are secondary to the immediate need to inform the physician about the patient's condition. Timely communication can make a significant difference in the patient's safety and treatment outcomes, highlighting the critical nature of advocating for the patient in response to adverse drug reactions.