What constitutes a sentinel event?

A sentinel event is specifically defined as an unexpected occurrence that results in death or serious physical or psychological injury, or the risk thereof. This definition highlights the critical nature of such events in healthcare, as they indicate a significant lapse in safety protocols or system failures that require immediate and thorough investigation to prevent future occurrences. The term "sentinel" reflects the essence of these events serving as a warning or signal of potential systemic issues within a healthcare organization.

While the other options mention occurrences in healthcare, they either imply events that are expected, do not lead to serious outcomes, or are more routine in nature (like scheduled assessments). These do not meet the criteria for sentinel events, which are characterized by their unexpected nature and the severity of consequences involved. By focusing on the impact of the event—specifically, serious injury or death—it's clear why this choice captures the true essence of what constitutes a sentinel event in the context of healthcare management and patient safety.