A nurse administers the wrong medication to a client. Which of the following actions should the nurse take first?

A. Notifying the provider is necessary, but it should occur after the nurse assesses the client's condition to provide accurate and timely information. B. The priority action is to assess the client by checking vital signs and monitoring for any adverse effects. This ensures prompt recognition and treatment of potential complications related to the medication error. C. Documentation of the client’s condition should be done after assessment and appropriate interventions have been initiated. D. Completing an incident report is important for risk management and quality improvement but is not the first priority in this situation.