A client with PTSD experiences exaggerated startle response. The client is paranoid and hypervigilant. Which nursing intervention is most appropriate?

A. While support groups may be helpful, the immediate intervention for a client experiencing heightened anxiety and hypervigilance is to provide structure and safety. B. Mindfulness meditation may be beneficial in the long term, but it is not the first intervention in an acute phase where anxiety and hypervigilance are prominent. C. A structured environment with predictable routines and consistent staff can help clients with PTSD feel more secure and reduce feelings of anxiety, hypervigilance, and paranoia. Predictability and structure are key interventions for clients with PTSD. D. Administering a PRN sedative medication should be a secondary intervention after providing a supportive and safe environment. Medications may be used as part of treatment, but they do not address the underlying anxiety and hypervigilance as effectively as a structured environment.