ADC Practice Question — Steam Steriliser Performance Tests

Which sterilisation cycle type is required for…

Infection control in the ADC exam tests decision-making around exposure incidents, instrument classification, and decontamination protocols. This exam-level vignette tests your ability to work through clinical details and arrive at the correct management.

Dr James Park runs a busy general dental practice. His dental assistant, Emily, is responsible for reprocessing instruments between patients. After a morning session involving extractions, restorations, and periodontal debridement, Emily needs to sort the used instruments for appropriate reprocessing. The instrument tray contains forceps, elevators, mouth mirrors, restorative instruments, scalers used for subgingival debridement, and metal impression trays. Which sterilisation cycle type is required for packaged critical RMDs such as surgical forceps?

A. N cycle (gravity displacement)
B. S cycle (specified loads)
C. B cycle (pre-vacuum with mechanical pump)
D. Any cycle type is acceptable for packaged items

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Sources cited

Therapeutic Guidelines v4 Odell's 3rd & 4th Ed IADT 2020 Code of Conduct CMS (Evans) Infection Control + more

Show the answer and cited explanation

Correct answer: C

B cycles use a mechanical vacuum pump for air removal and are required for hollow objects and packaged RMDs. N cycles are only suitable for non-packaged, non-hollow solid RMDs. S cycles are for specified load types only. Packaged critical RMDs must be sterilised using a B cycle to ensure adequate air removal and steam penetration through the packaging. (ICG pp.47-48)

Source: ICG Section D: Sterilisation Cycles

Remy's study tip — The differentiator is usually the Spaulding classification level or the step order in a protocol.

Exam preparation FAQ

Should I memorise guidelines word-for-word for Steam Steriliser Performance Tests?

Focus on decision points — when the guideline says X vs Y. The exam tests application, not recitation.

How are Steam Steriliser Performance Tests questions structured in the ADC written exam?

ADC Steam Steriliser Performance Tests questions present as clinical vignettes requiring management decisions. The correct answer is always traceable to a guideline source.

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Which sterilisation cycle type is required for…

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