Principles and Maintenance Flashcards

What is the primary purpose of performing biological monitoring (e.g., spore testing) on sterilization equipment used in endoscopy units?

Answer: To verify that the sterilization cycle is achieving the intended kill of the most resistant organisms

Biological indicators containing resistant spores confirm that the sterilization process achieved sufficient lethality to kill the hardest-to-kill organisms, validating cycle efficacy.

Which action is required when a high-level disinfectant solution reaches its maximum use life before the container is empty?

Answer: Discard the entire solution regardless of test results, because use-life limits are absolute

Use-life expiration is an absolute cutoff set by the manufacturer's validation; the solution must be discarded even if it still passes MEC testing, as other degradation products may have formed.

Glutaraldehyde-based high-level disinfectants require special handling because:

Answer: They are toxic, irritating to skin, eyes, and respiratory tract, and require adequate ventilation and PPE

Glutaraldehyde vapors are irritating and potentially sensitizing; OSHA regulations require exposure controls, PPE, and ventilation when handling these agents.

Which scenario represents a break in the endoscope reprocessing chain that would require immediate corrective action?

Answer: Discovering that an endoscope was stored with caps attached and channels closed after reprocessing

Storing a reprocessed scope with caps on and channels closed traps residual moisture, promoting microbial growth and compromising the maintained disinfected state.

The Spaulding classification system guides endoscope reprocessing by categorizing devices based on:

Answer: The risk of infection associated with their intended use and the body site they contact

Spaulding's framework classifies devices as critical, semi-critical, or non-critical based on body-site contact risk, which determines the minimum required level of reprocessing.

What is the purpose of maintaining detailed reprocessing records for each endoscope?

Answer: To provide traceability linking each scope to its reprocessing cycle and the patients on whom it was used

Traceability records allow facilities to identify patients exposed to a potentially inadequately reprocessed endoscope, enabling timely patient notification and look-back investigations.

During quality assurance for endoscope reprocessing, an ATP (adenosine triphosphate) bioluminescence test is used to:

Answer: Detect residual organic contamination as a surrogate marker for cleaning effectiveness

ATP testing detects biological residue (organic matter) remaining on or in the endoscope after cleaning, providing rapid feedback on cleaning adequacy before disinfection.