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Difficulty: Very hardPatient Safety Culture and Reporting Systems

A large academic medical center is transitioning to a new continuous renal replacement therapy (CRRT) platform in the intensive care unit. Before the machines are deployed for patient care, a multidisciplinary team of nephrologists, intensive care nurses, and clinical engineers meets to systematically map out the new tubing setup process. They identify potential points where misconnections could occur, evaluate the severity of potential harm for each hypothetical misconnection, and develop additional training modules to mitigate these risks.

Six months later, an ICU nurse mistakenly connects the CRRT dialysate effluent line directly to a patient's central venous access port. This occurs because the new CRRT machine's effluent tubing possesses a standard Luer-lock connector that is physically compatible with the patient's central venous catheter. The patient experiences a sudden hemodynamic collapse but is successfully resuscitated.

Which of the following best describes the proactive risk assessment methodology utilized by the multidisciplinary team before deployment, and the underlying classification of the system vulnerability that facilitated the nurse's error?

  1. A
    Root cause analysis; active error due to cognitive anchoring
  2. B
    Root cause analysis; latent error due to inadequate transition of care
  3. C
    Failure mode and effects analysis; active error due to premature closure
  4. Failure mode and effects analysis; latent error due to poor human factors engineeringAnswer
  5. E
    Plan-Do-Study-Act cycle; adverse event due to pharmacologic contraindication oversight

Answer

The initial assessment was a Failure Mode and Effects Analysis (FMEA), and the vulnerability was a latent error due to poor human factors engineering.
The multidisciplinary team conducted a Failure Mode and Effects Analysis (FMEA), which is a proactive, prospective process used to identify and mitigate potential failures before they occur. The subsequent event was facilitated by a latent error—a system-level flaw at the 'blunt end' of healthcare delivery (the use of universal Luer-lock connectors for entirely different fluid systems). This poor human factors engineering lacked a 'forcing function' (a physical constraint preventing the wrong connection from being made), which ultimately allowed the nurse's active slip to cause patient harm.

Step-by-Step Solution

1
Identify the timing and purpose of the multidisciplinary team's initial meeting.
The meeting occurred 'before the machines are deployed' to 'systematically map out... potential points where misconnections could occur.'
Determines whether the safety methodology used was prospective or retrospective.
2
Classify the safety methodology based on step 1.
A prospective, systematic evaluation to identify and mitigate potential failures before they occur is a Failure Mode and Effects Analysis (FMEA).
Differentiates FMEA (prospective) from Root Cause Analysis (retrospective).
3
Analyze the nature of the vulnerability that allowed the error to happen.
The tubing possessed a standard Luer-lock connector physically compatible with a central venous catheter, allowing a wrong connection.
Identifies the structural or systemic flaw that set the stage for the incident.
4
Classify the type of error and its origin.
The compatible connector is a system design flaw at the 'blunt end' of care, classifying it as a latent error caused by poor human factors engineering (lack of a forcing function).
Distinguishes between the active error (the nurse's slip at the sharp end) and the latent error (the systemic vulnerability facilitating the slip).

Key Concept

Failure Mode and Effects Analysis (FMEA) is a prospective safety tool, whereas Root Cause Analysis (RCA) is retrospective. Latent errors are underlying systemic vulnerabilities (e.g., poor human factors engineering) that facilitate active errors at the point of care.
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Patient Safety Culture and Reporting Systems

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