An 85-year-old female, typically alert and oriented, is admitted for a hip fracture repair. On post-operative day 2, she becomes acutely confused, disoriented to place and time, and fluctuates between lethargy and agitation. Her vital signs are stable. Which of the following is the most appropriate initial management approach for her acute change in mental status?
✓ Correct Answer: Option C
The patient's acute, fluctuating mental status change is characteristic of delirium. The most crucial initial step is to identify and address precipitating factors such as infection, medication side effects, pain, or electrolyte imbalances.