Which statement best distinguishes sentinel events from adverse events in an ambulatory surgery center (ASC)?

• A. Sentinel events are infections that are tracked for QA and analyzed only if requested.
• B. Sentinel events involve death or serious injury; require immediate escalation and RCAs, and mandatory reporting to authorities.
• C. Adverse events require mandatory reporting to authorities.
• D. Sentinel events occur during routine QA reviews only and need no escalation.

Answer: (B)