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Difficulty: MediumRoot Cause Analysis and Error Investigation

Match each clinical scenario or hospital intervention with the correct patient safety concept or level of the hierarchy of safety controls.

  • A clinician accidentally orders a 10-fold overdose of an anticoagulant due to a misplaced decimal point during a hectic night shift.Active error (Sharp-end failure)
  • Look-alike vials of high-alert medications are routinely stocked in adjacent bins within the automated dispensing cabinets.Latent condition (Blunt-end failure)
  • Medical gas wall outlets are engineered with unique geometric pin shapes that physically prevent connecting an oxygen line to a nitrogen port.Forcing function (Strong intervention)
  • The surgical department implements a mandatory uniform preoperative timeout protocol to be used universally before any procedural incision.Standardization (Intermediate intervention)
  • Following a near-miss incident, hospital leadership emails a bulletin to all clinical staff reminding them to verify patient identities more carefully.Education and training (Weak intervention)

Answer

The correct matches align individual frontline mistakes with active errors, system vulnerabilities with latent conditions, and safety interventions with their respective strength in the hierarchy of controls.
Correct matching requires understanding both the etiology of medical errors and the effectiveness of subsequent interventions. Active errors happen at the sharp end (the operator level), while latent conditions are systemic flaws at the blunt end. When designing interventions during Root Cause Analysis, forcing functions (which physically prevent the error) are the strongest. Standardization is of intermediate strength, and training/reminders are the weakest because they do not address the underlying systemic risks.

Step-by-Step Solution

1
Analyze the scenarios to separate errors from interventions.
Scenarios involving the anticoagulant and medication stocking describe errors, while the gas pins, timeout, and email bulletin describe safety interventions.
Differentiating the nature of the event simplifies the matching process.
2
Classify the errors as either active or latent.
The incorrect order is an immediate mistake by a user (Active error), whereas the adjacent stocking of similar medications is an underlying system design flaw (Latent condition).
Root cause analysis relies on distinguishing blunt-end vulnerabilities from sharp-end failures.
3
Rank the safety interventions using the hierarchy of safety controls.
The physical pin system prevents the error entirely (Forcing function/Strong). The timeout reduces process variation (Standardization/Intermediate). The email bulletin relies solely on memory (Education/Weak).
Understanding intervention strength is critical for implementing effective, long-lasting corrective actions.

Key Concept

Hierarchy of Safety Controls and Error Classification
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Topics

Root Cause Analysis and Error Investigation

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