A nurse is administering morning medications and realizes that nifedipine was administered to the wrong client. Which of the following is the priority nursing action?

A. Filling out an occurrence report is important for institutional tracking and quality improvement, but it is not the immediate priority for client safety. B. Notifying the charge nurse is necessary, but the nurse must first assess the client’s condition to determine if any urgent intervention is required. C. Checking the client’s vital signs is the priority action because it allows the nurse to assess for any adverse effects of the medication and take immediate steps to ensure the client’s safety. This aligns with the principle of addressing actual harm before reporting or documenting. D. Documenting an objective description in the client’s chart is important, but safety assessment comes first before documentation.