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Microbiology and Infection Control Flashcards

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

Read the first 7 Microbiology and Infection Control flashcards as text

  1. Which of the following is the correct sequence for donning sterile attire in the OR?

    Answer: Cap → Mask → Gown → Gloves

    The correct order is cap first (to contain hair), then mask (to protect airway/droplets), then surgical hand antisepsis, then gown, then gloves.

  2. What is the primary purpose of using a sterile drape with an iodine-impregnated adhesive incise film (e.g., Ioban)?

    Answer: To reduce SSI risk by immobilizing skin flora at the incision site

    Iodine-impregnated incise drapes kill resident skin flora and mechanically isolate the incision site to prevent microbial migration into the wound.

  3. A scrub person notices that a sterile package has a small hole in the outer wrap. The CORRECT action is to:

    Answer: Consider the item non-sterile and obtain a replacement

    Package integrity is essential to sterility maintenance; any breach in packaging — even a pinhole — renders the contents non-sterile.

  4. Which bloodborne pathogen has the HIGHEST risk of transmission following a needlestick injury from an infected patient?

    Answer: Hepatitis B virus (HBV)

    Hepatitis B virus has a transmission risk of up to 30% per needlestick from an HBsAg-positive source, significantly higher than HCV (~3%) or HIV (<1%).

  5. In Spaulding's classification, an endoscope used for bronchoscopy (touching non-intact mucosa) requires at minimum:

    Answer: High-level disinfection

    Semi-critical items (contact with mucous membranes or non-intact skin) require high-level disinfection to eliminate all microorganisms except high numbers of bacterial spores.

  6. During an airborne infection isolation procedure (e.g., TB patient), the surgical team should wear at minimum:

    Answer: N95 respirators fit-tested to each individual

    N95 respirators filter at least 95% of airborne particles and must be fit-tested to the individual user to be effective against Mycobacterium tuberculosis.

  7. Which of the following correctly describes a 'break in sterile technique' that requires immediate action?

    Answer: A scrubbed team member reaches across the sterile field with an ungloved hand

    An ungloved (unscrubbed) hand crossing over or into the sterile field immediately contaminates it and requires the field to be re-established.