Final answer:
A death during diagnostic examination, surgery on the wrong patient, or discharging a baby to the wrong family is classified as a Sentinel event, which requires immediate investigation to improve safety.
Step-by-step explanation:
An example of a "death of a patient during diagnostic examination, surgery on the wrong patient or wrong body part, or discharge of the baby to the wrong family" is best described as a Sentinel event. A sentinel event is a significant adverse event that results in serious harm or death to a patient and is often associated with a need for immediate investigation and response. This term is used by healthcare facilities and accreditation organizations, such as The Joint Commission, to indicate an occurrence that requires immediate investigation and results in significant changes in practice to improve safety and prevent similar events in the future.