PTCB Certified Pharmacy Technician (PTCE)Patient Safety and Quality AssuranceMedium

Which of the following is an example of a 'sentinel event' in a pharmacy setting?

  1. AA technician misfiles a patient's insurance information.
  2. BA pharmacy experiences a temporary outage of its computer system.
  3. CA patient receives the wrong medication and experiences a fatal allergic reaction.
  4. DA pharmacist discovers a dispensing error before the medication leaves the pharmacy.
Show answer & explanation

Correct answer: C. A patient receives the wrong medication and experiences a fatal allergic reaction.

A sentinel event is defined as an unexpected occurrence involving death or serious physical or psychological injury, or the risk thereof. A fatal allergic reaction due to a medication error unequivocally fits this definition, triggering a mandatory review and investigation.

Why the other options are wrong

  • A. Misfiling insurance information is an administrative error, not a sentinel event.
  • B. A computer system outage is an operational disruption, not a sentinel event related to patient harm.
  • D. Discovering an error before it reaches the patient is a 'near miss' or 'good catch,' which is positive for patient safety, not a sentinel event.

Sentinel Event

An unexpected occurrence involving death or serious physical or psychological injury, or the risk thereof.

  • Requires immediate investigation (Root Cause Analysis) by the organization.
  • Alerts the need for immediate response and investigation.
  • Examples: wrong-site surgery, suicide in a healthcare facility, fatal medication error.

Memory trick: Don't just see, then act, then learn.

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