Final answer:
The patient's family reported behavior changes of disorientation and attempts to remove the knee from the CPM machine. The changes started the prior evening.
Step-by-step explanation:
The behavior changes reported by the family in this scenario are that the client is disoriented to time and place but oriented to self, and is attempting to remove the knee from the continuous passive motion (CPM) machine and expressing a desire to go home.
The family noticed these behavior changes starting the prior evening.
It is important for the nurse to address the client's disorientation and provide support and reassurance.