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Difficulty: MediumQuality Improvement Models and Methodologies

A 65-year-old woman with rheumatoid arthritis is prescribed oral methotrexate to be taken once weekly. Due to a confusing drop-down menu in the electronic health record (EHR), the physician erroneously selects a daily dosing schedule. The prescription is transmitted to an outpatient pharmacy, where it is dispensed as written without clarification. The patient takes the medication daily for two weeks and is subsequently admitted to the hospital with severe pancytopenia and mucositis. The health system's quality and safety committee convenes to investigate the incident. Their goal is to trace the sequence of events, identify underlying systemic vulnerabilities, and implement safeguards to prevent similar prescribing errors.

Which of the following quality improvement methodologies is the most appropriate primary investigative tool for the committee to employ in this scenario?

  1. A
    Failure mode and effects analysis
  2. B
    Plan-Do-Study-Act cycle testing
  3. Root cause analysisAnswer
  4. D
    Pareto chart analysis
  5. E
    Lean Six Sigma DMAIC framework

Answer

The correct methodology is Root cause analysis.
The correct answer is Root cause analysis. The scenario describes a sentinel event, which is an unexpected occurrence involving death or serious physical or psychological injury. Root cause analysis is a retrospective quality improvement methodology that is mandated for the investigation of sentinel events. It focuses on identifying the underlying systemic, environmental, and human factors (such as the confusing EHR interface and lack of pharmacy verification) that aligned to cause the error, utilizing a systems-based approach rather than assigning individual blame. Because the adverse event has already occurred, a retrospective investigative tool is the necessary first step before implementing solutions.

Step-by-Step Solution

1
Analyze the clinical scenario to determine the nature and timing of the adverse event.
The scenario describes a sentinel event (severe patient harm due to a methotrexate prescribing and dispensing error) that has already occurred.
Determining whether an event is prospective (potential) or retrospective (already happened) dictates which category of quality improvement tool is required.
2
Evaluate the primary goal of the quality and safety committee.
The committee intends to investigate the past event to trace the sequence of errors across multiple departments (EHR design, pharmacy verification) and identify systemic vulnerabilities.
Matching the committee's objective with the correct methodology ensures a comprehensive systems-based approach rather than assigning individual blame.
3
Select the appropriate methodology for the retrospective investigation of a sentinel event.
Root cause analysis is identified as the standard retrospective tool used to investigate the fundamental systemic factors contributing to a sentinel event.
Root cause analysis focuses on the 'how' and 'why' an event occurred by examining human factors, equipment, communication, and policies, making it the correct choice.

Key Concept

Root Cause Analysis (RCA)
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Topics

Quality Improvement Models and Methodologies

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