Medical Device Reprocessing Association of Ontario (MDRAO) Practice Exam

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How is the shelf life of a sterilization package determined?

  1. Time-related

  2. Temperature-related

  3. Event-related

  4. Usage-related

The correct answer is: Event-related

The shelf life of a sterilization package is determined by the concept of event-related sterility. This means that the sterility of the package is impacted by various events that can occur after sterilization has taken place, rather than being solely dependent on a predetermined time frame. Factors such as handling, environmental conditions, and the integrity of the packaging can influence whether the contents remain sterile. In an event-related shelf life, the focus is on monitoring conditions and actions that may compromise sterility rather than just counting the days or weeks since sterilization. If the package is kept intact and undisturbed in a controlled environment, it can remain sterile beyond the time limits that might traditionally be set. Conversely, if the package is compromised due to an event, even if it is within the defined 'shelf life,' the contents may no longer be considered sterile. This approach emphasizes the importance of maintaining packaging integrity and adhering to proper storage conditions as key factors in ensuring the continued sterility of medical devices.