You are a charge nurse in the emergency department and you begin to notice that a seasoned colleague's behavior has recently changed. They have become increasingly isolated, their work performance has declined with unusual documentation errors, and they frequently volunteer to administer narcotics. What is the most appropriate initial action to take in this situation?
Monitor the colleague’s behavior closely and document any further incidents.
Report the behavior to the appropriate supervisor or manager.
Ignore the behavior as it may be related to personal issues outside of work.
Confront the colleague directly and demand an explanation.