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Zorluk: OrtaClassification of Medical Errors and Adverse Events

An anesthesiologist is inducing general anesthesia for a 55-year-old male undergoing an elective surgical procedure. The hospital administration recently replaced all operating room anesthesia machines with a newer model to standardize equipment. On this new model, the oxygen flush button and the volatile anesthetic gas concentration dial are located immediately adjacent to each other and share a similar tactile profile, which differs significantly from the older machines. While attempting to deliver a rapid flush of 100% oxygen during a brief episode of oxygen desaturation, the anesthesiologist inadvertently rotates the adjacent anesthetic dial, delivering a high concentration of volatile gas. The patient experiences a transient episode of severe hypotension and hypoxemia before the anesthesiologist recognizes the mistake, corrects the settings, and stabilizes the patient's hemodynamics. Which of the following patient safety terms best categorizes the physical placement and similarity of the controls on the new anesthesia machine?

  1. Latent errorCevap
  2. B
    Active error
  3. C
    Sentinel event
  4. D
    Near miss
  5. E
    Cognitive bias

Cevap

The correct answer is Latent error.
The correct answer identifies that the poor physical design of the anesthesia machine represents a latent error. According to the 'Swiss Cheese' model of medical errors, latent errors are blunt-end vulnerabilities—such as poor human factors engineering, inadequate staffing, or suboptimal protocols—that are built into the system. These errors lie dormant until a specific set of circumstances aligns, allowing an active error (the sharp-end mistake made by the frontline provider) to breach the system's defenses and cause an adverse event. In this scenario, the adjacent placement and similar tactile feel of critical controls is a latent error that facilitated the anesthesiologist's active error.

Adım Adım Çözüm

1
Analyze the incident to separate the operator's action from the environmental/equipment conditions.
The operator pressed the wrong button (active action), but the machine's design facilitated this mistake due to adjacent, similar-feeling controls (system condition).
Differentiating between the sharp end (human operator) and blunt end (system design) is required to classify the error type.
2
Evaluate the specific subject of the question.
The question specifically asks to categorize the 'physical placement and similarity of the controls', which is a design choice made by the manufacturer and accepted by the hospital administration.
Answering the precise question avoids confusing the underlying vulnerability with the adverse outcome.
3
Map the system vulnerability to the correct patient safety taxonomy.
System-level flaws that lie dormant until they precipitate a mistake at the sharp end are defined as latent errors.
This matches the 'Swiss Cheese' model of accident causation.

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Classification of Medical Errors and Adverse Events
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