An adult female client with bipolar disorder is seen in the outpatient psychiatric clinic and tells the nurse that she is thinking of harming her sister. Which action is most important for the nurse to take?

A. Notify the healthcare provider of the threat: The nurse’s priority is to ensure safety and initiate timely intervention. Informing the healthcare provider allows for immediate assessment, risk management, and implementation of protective measures to prevent harm to the identified individual. B. Inform the sister of the client's threat: While notifying potential victims may ultimately be necessary, the nurse must first follow institutional protocols and involve the healthcare provider or legal authorities. Directly contacting the sister without guidance could place the client or nurse at risk and bypass professional procedures. C. Report the threat to the healthcare team: Communicating with the team supports collaborative care but is secondary to immediate notification of the healthcare provider, who can make clinical and legal decisions regarding risk management and safety planning. D. Document the threat in the medical record: Documentation is essential for legal and clinical purposes, but it does not actively address the immediate safety concern. Recording alone is insufficient without prompt provider notification and intervention.