ADC Practice Question — Hand Hygiene

According to the ICG, how long can pathogenic bacteria from contaminated surfaces remain on hands or gloves?

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 Sarah Chen is working in a busy dental practice in Melbourne. During a routine examination of a patient, she notices her hands are visibly clean but she needs to perform hand hygiene between different moments of patient care. The practice has alcohol-based hand rub dispensers at each treatment station. According to the ICG, how long can pathogenic bacteria from contaminated surfaces remain on hands or gloves?

A. Up to 5 subsequent touches
B. Up to 10 subsequent touches
C. Up to 19 subsequent touches
D. Up to 25 subsequent touches

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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

The ICG states that pathogenic bacteria contained within a biofilm on a contaminated surface can readily be transferred from the surface onto gloved hands or bare hands and will remain on hands or gloves for up to 19 subsequent touches (ICG p.16)

Source: ICG Section B: Standard precautions

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 Hand Hygiene?

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

How are Hand Hygiene questions structured in the ADC written exam?

ADC Hand Hygiene questions present as clinical vignettes requiring management decisions. The correct answer is always traceable to a guideline source.

Every answer, traced to the source.

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According to the ICG, how long can pathogenic bacteria from contaminated surfaces remain on hands or gloves?

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