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Infection Control Flashcards

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

Read the first 6 Infection Control flashcards as text

  1. The chain of infection requires which element to complete transmission?

    Answer: A susceptible host

    The chain of infection includes: infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and a susceptible host. Without a susceptible host, transmission cannot complete.

  2. Which hand hygiene product is most effective against Clostridioides difficile (C. diff) spores?

    Answer: Plain soap and water

    Alcohol-based hand rubs do not kill C. diff spores. Soap and water with vigorous rubbing mechanically removes spores from hands.

  3. An N95 respirator is required when caring for a patient with:

    Answer: Tuberculosis (TB)

    Tuberculosis spreads via airborne droplet nuclei that remain suspended in air for long periods. An N95 respirator filters at least 95% of airborne particles and is mandatory for TB care.

  4. The autoclave sterilization process destroys microorganisms primarily through:

    Answer: Moist heat under pressure

    Autoclaves use saturated steam under pressure (typically 121°C at 15 psi) to denature microbial proteins and achieve sterilization.

  5. Standard precautions apply to:

    Answer: Blood, all body fluids (except sweat), non-intact skin, and mucous membranes for ALL patients

    Standard precautions treat blood and all body fluids (except sweat) from every patient as potentially infectious, regardless of known diagnosis.

  6. Which solution is a tuberculocidal intermediate-level disinfectant commonly used on clinical surfaces?

    Answer: Sodium hypochlorite (bleach) 1:10 dilution

    A 1:10 bleach solution (approximately 5,000 ppm free chlorine) is tuberculocidal and effective against HIV, HBV, and C. diff spores on surfaces.

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