CSFA Microbiology and Infection Control 4

Question 1

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

Accepted Answer

Cap → Mask → Gown → Gloves

Answer

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

Question 2

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

Accepted Answer

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

Answer

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

Question 3

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

Accepted Answer

Consider the item non-sterile and obtain a replacement

Answer

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

Question 4

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

Accepted Answer

Hepatitis B virus (HBV)

Answer

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%).

Question 5

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

Accepted Answer

High-level disinfection

Answer

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.

CSFA - Certified Surgical First Assistant Practice Test

CSFA - Certified Surgical First Assistant Practice Test

CSFA Microbiology and Infection Control 4