Final answer:
First, the nurse should call for additional help to ensure safety and assistance, then focus on reorienting the disoriented client.
Step-by-step explanation:
The nurse should first call for additional help followed by reorienting the client. Given the client's disorientation and confusion, securing safety and additional assistance takes priority. Once help is secured, the nurse can then focus on reorienting the client to the time, place, and circumstances, which may help reduce the client's confusion and improve compliance with treatment.