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Difficulty: MediumHuman Factors and Cognitive Biases

A hospital quality improvement committee is reviewing a cluster of near-miss events in the pediatric intensive care unit (PICU). In these incidents, nurses almost administered look-alike, sound-alike (LASA) high-alert medications to the wrong patients. A root cause analysis reveals that frequent environmental interruptions and reliance on memory during busy shift changes were the primary contributing factors. The committee is tasked with implementing interventions based on the human factors engineering hierarchy of effectiveness. Which of the following strategies represent strong or intermediate system-level interventions to mitigate this recurring error? (Select 2 options)

  1. Integrating a barcode scanning system that physically locks the infusion pump if the scanned medication does not match the patient's electronic wristbandAnswer
  2. Delineating a highly visible, standardized 'no-interruption zone' around the medication preparation area using physical barriers and floor markingsAnswer
  3. C
    Adding a mandatory step to the shift handoff protocol requiring the off-going nurse to verbally remind the incoming nurse to double-check high-alert medications
  4. D
    Conducting a Failure Mode and Effects Analysis (FMEA) to investigate the sequence of events that led to these specific past near-misses
  5. E
    Providing mandatory annual training to help staff recognize and suppress premature closure when identifying patient names on medication vials

Answer

The correct interventions are the barcode scanning system that locks the infusion pump and the standardized 'no-interruption zone'.
In human factors engineering, interventions are ranked by their ability to prevent errors independent of human vigilance. Strong interventions, such as forcing functions (e.g., a barcode system that locks a pump), physically prevent an error from occurring. Intermediate interventions, such as environmental standardization (e.g., no-interruption zones), reduce cognitive load and optimize workflow. Both of these strategies change the system rather than relying on perfect human performance.

Step-by-Step Solution

1
Analyze the goal of the question
The prompt asks to identify 'strong' or 'intermediate' system-level interventions based on human factors engineering principles.
Differentiating between weak (human-reliant) and strong (system-based) interventions is essential in patient safety.
2
Evaluate the hierarchy of effectiveness for the given options
Strong interventions include forcing functions and computer automation. Intermediate interventions include checklists, cognitive aids, and environmental standardization. Weak interventions include education, new rules/policies, and double-checks.
System-level interventions are more effective because they do not rely on perfect human performance or memory.
3
Categorize each proposed option
The barcode system with pump lock is a forcing function (strong). The 'no-interruption zone' is environmental standardization (intermediate). The verbal handoff reminder and training modules are education/policy (weak).
Proper categorization identifies the two correct system-level interventions.

Key Concept

Hierarchy of Intervention Effectiveness in Human Factors Engineering
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Topics

Human Factors and Cognitive Biases

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