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Difficulty: HardRoot Cause Analysis and Error Investigation

A 68-year-old man with end-stage renal disease on hemodialysis is admitted to the hospital for placement of a tunneled dialysis catheter. Postoperatively, the surgical resident prescribes intravenous hydromorphone for pain control. The resident does not adjust the dose for the patient's renal impairment. The clinical pharmacist verifies the order without questioning it, and the floor nurse administers the medication during a busy shift change. Four hours later, the patient develops severe respiratory depression requiring intubation and intensive care unit transfer. He is extubated the next day and recovers fully.

A Root Cause Analysis (RCA) is convened to investigate the event. The committee identifies multiple active and latent errors that contributed to the outcome. They are tasked with recommending corrective actions to prevent similar incidents in the future.

According to the hierarchy of patient safety controls, which of the following proposed interventions represents the strongest, most effective system-level change?

  1. Programming the electronic health record to require a hard stop that blocks high-dose opioid orders for patients with a glomerular filtration rate below 30 mL/min/1.73 m²Answer
  2. B
    Mandating an annual continuing education module for all prescribers and pharmacists on the pharmacokinetics of opioid analgesics in renal failure
  3. C
    Implementing a standardized handoff protocol for nursing shift changes to ensure high-risk medication administrations are explicitly communicated
  4. D
    Conducting a failure mode and effects analysis on the surgical ward to proactively identify other potential areas where medication errors might occur
  5. E
    Distributing a pocket-sized cognitive aid to all residents that lists the maximum recommended doses of common analgesics for patients with chronic kidney disease

Answer

Programming the electronic health record to require a hard stop that blocks high-dose opioid orders for patients with a glomerular filtration rate below 30 mL/min/1.73 m².
The correct answer identifies a forcing function (a hard stop in the electronic health record) as the strongest system-level change. According to the hierarchy of safety controls, interventions that rely on system design and automation (forcing functions, computerization) are significantly more effective than those that rely on human behavior (education, rules, reminders) because they prevent the user from making the error regardless of fatigue or distraction.

Step-by-Step Solution

1
Analyze the goal of the RCA committee.
The committee must recommend corrective actions based on the hierarchy of safety controls to prevent future occurrences of the adverse event.
Corrective actions are the output of an RCA and must be prioritized by their effectiveness.
2
Evaluate the hierarchy of safety controls.
Forcing functions and automation are the strongest; standardization and simplification are intermediate; rules, reminders, and education are the weakest.
Stronger controls rely on system design and physical/electronic constraints, while weaker controls rely heavily on human behavior and memory.
3
Assess each proposed intervention against the hierarchy.
The electronic health record hard stop is a forcing function. The others represent education, standardization, an assessment tool (FMEA), and a reminder.
A hard stop physically prevents the error from propagating without explicit, deliberate override, making it the most effective system-level change.

Key Concept

Hierarchy of safety controls in Root Cause Analysis
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Topics

Root Cause Analysis and Error Investigation

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