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Difficulty: EasyClassification of Medical Errors and Adverse Events

A 45-year-old man with a documented severe anaphylactic allergy to penicillin is admitted to the medical ward from the emergency department for bacterial pneumonia. During the verbal transition of care, the emergency physician is distracted and forgets to mention the patient's allergy. Furthermore, the hospital's electronic medical record (EMR) system recently underwent an update that inadvertently disabled prominent allergy pop-up alerts. Unaware of the allergy, the admitting ward physician prescribes intravenous piperacillin-tazobactam. A clinical pharmacist reviewing the orders discovers the allergy in a scanned historical document and intercepts the medication before it is dispensed.

Based on the classification of medical errors and adverse events, which of the following statements about this incident are correct? (Select all that apply)

  1. The incident is classified as a near miss because the inappropriate medication never reached the patient.Answer
  2. The electronic medical record software update that disabled the allergy pop-up alerts represents a latent error.Answer
  3. C
    The omission of the allergy history during the verbal handoff is classified as a latent system vulnerability.
  4. D
    The hospital should use Failure Mode and Effects Analysis (FMEA) to investigate the root cause of this specific incident.
  5. E
    The ward physician's medication order is classified as an unpreventable adverse event because the electronic alert system failed.

Answer

The correct statements are that the incident is a near miss (because it was intercepted before reaching the patient) and that the electronic medical record update disabling alerts is a latent error.
The correct options accurately identify the event as a near miss because a potential harm was successfully intercepted before reaching the patient. Furthermore, they correctly classify the EMR software update flaw as a latent error, which is a hidden system vulnerability that creates conditions for active errors to manifest.

Step-by-Step Solution

1
Analyze the incident outcome.
The medication was intercepted by the pharmacist and never reached the patient.
Determines whether the event is an adverse event, sentinel event, or near miss.
2
Evaluate the system factors and human actions.
The software update disabling alerts is a system flaw (latent error), while the physician forgetting to mention the allergy is a frontline human failure (active error).
Differentiates between latent (blunt end) and active (sharp end) errors.
3
Identify the appropriate investigation methodology.
The event has already occurred, requiring retrospective analysis.
Root Cause Analysis (RCA) is used for past events, while Failure Mode and Effects Analysis (FMEA) is prospective.

Key Concept

Classification of medical errors involves distinguishing between active errors (frontline human errors), latent errors (system vulnerabilities), and categorizing the outcome (e.g., near miss vs. adverse event).
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Topics

Classification of Medical Errors and Adverse Events

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