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Endoscope Sterilization Methods Flashcards

7 cards from real CER practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A flexible endoscope labeled 'NOT compatible with EO sterilization' by its manufacturer should be processed using:

    Answer: Only the methods specifically validated and approved by the endoscope manufacturer

    Reprocessors must follow the endoscope manufacturer's validated and approved reprocessing methods to ensure safety, efficacy, and device integrity.

  2. Which statement about ozone sterilization is accurate?

    Answer: Ozone is generated on-site from oxygen and water, eliminating the need for chemical storage

    Ozone sterilization systems generate ozone on-site from oxygen, eliminating the need to store hazardous chemicals, and it breaks down to oxygen and water after the cycle.

  3. Before loading an endoscope into an automated endoscope reprocessor (AER) set to run a sterilization cycle, the technician MUST:

    Answer: Perform pre-cleaning, leak testing, and manual cleaning per IFU

    Pre-cleaning, leak testing, and manual cleaning must always precede any automated reprocessing cycle to remove gross soil and verify device integrity.

  4. The purpose of a 'parametric release' in sterilization is to:

    Answer: Release a sterilized load based on verified physical and chemical process parameters without waiting for BI incubation

    Parametric release relies on verified sterilization process parameters (time, temperature, pressure, concentration) as evidence of sterility rather than awaiting BI culture results.

  5. Which of the following correctly describes the mechanism of action of hydrogen peroxide plasma sterilization?

    Answer: Hydrogen peroxide vapor is energized into plasma, generating free radicals that destroy microbial cell walls and DNA

    In plasma sterilization, hydrogen peroxide vapor is exposed to radiofrequency energy, creating plasma that releases free radicals (OH• and HO₂•) with potent antimicrobial activity.

  6. A sterilization cycle fails its chemical indicator but passes its biological indicator. The correct interpretation is:

    Answer: Both indicators must be evaluated together; a failed CI warrants investigation even with a passing BI

    Both chemical and biological indicators provide complementary information; a failed chemical indicator signals a potential process deviation that must be investigated regardless of BI results.

  7. Under OSHA regulations, healthcare workers routinely using EO sterilization must be protected by which measure?

    Answer: Engineering controls, PPE, and exposure monitoring with permissible exposure limits enforced

    OSHA's EO standard (29 CFR 1910.1047) requires engineering controls, administrative controls, PPE, and air monitoring to protect workers from EO exposure within permissible limits.