If a client with OCD becomes aggressive, what should the nurse do first?

When managing a client with OCD who becomes aggressive, prioritizing safety is crucial. The first step should be to ensure a safe environment for both the aggressive client and others in the vicinity. By moving both clients to a separate, safe location, the nurse can effectively minimize the risk of harm, de-escalate the situation, and maintain a therapeutic environment. This action helps to protect all individuals involved while allowing for a more stable setting to address the aggressive behavior.

The other options do not address the immediate need for safety. Restraining the client might escalate the situation further and could lead to injury for both the client and the staff. Filling out an incident report or calling the risk management department are actions that come after immediate safety concerns have been addressed; they do not provide an immediate solution to the aggression. Therefore, ensuring that all individuals are in a safe, controlled environment is the most appropriate and effective first response.