NCWO Infection Prevention and Control

Question 1

Which of the following best defines a critically colonized wound?

Accepted Answer

A wound with bacteria causing tissue damage and delayed healing without systemic signs

Answer

A wound with no microbial presence

Answer

A wound with systemic signs of infection such as fever and leukocytosis

Answer

A wound that has been sterilized with antiseptic solution

Question 2

According to wound infection principles, what bacterial count per gram of tissue is generally considered the threshold for clinical infection?

Accepted Answer

10^5 organisms per gram

Answer

10^3 organisms per gram

Answer

10^7 organisms per gram

Answer

10^9 organisms per gram

Question 3

Which hand hygiene method is most effective against Clostridioides difficile spores?

Accepted Answer

Soap and water handwashing for at least 20 seconds

Answer

Alcohol-based hand rub for 20 seconds

Answer

Chlorhexidine gluconate scrub for 10 seconds

Answer

Povidone-iodine hand wash for 15 seconds

Question 4

When caring for a patient with a methicillin-resistant Staphylococcus aureus (MRSA) wound infection, which isolation precaution level is required?

Accepted Answer

Contact precautions

Answer

Standard precautions only

Answer

Airborne precautions

Answer

Droplet precautions

Question 5

Which clinical sign is MOST specific for identifying wound infection in a chronic wound?

Accepted Answer

Increased pain or change in pain character

Answer

Wound odor

Answer

Increased exudate volume

Answer

Wound edges that appear macerated

Question 6

What is the recommended technique for collecting a wound culture to obtain the most clinically meaningful results?

Accepted Answer

Use the Levine technique: firmly rotate a swab over a 1 cm² area for 5 seconds

Answer

Swab the wound surface after removing exudate

Answer

Swab purulent drainage directly from the wound bed

Answer

Aspirate from the outer wound margin with a needle and syringe

Question 7

Biofilm in a chronic wound is best described as:

Accepted Answer

A structured community of microorganisms encased in a self-produced extracellular matrix

Answer

A single layer of bacteria on the wound surface that responds readily to topical antibiotics

Answer

A type of necrotic tissue that must be surgically debrided

Answer

A protein layer formed by the host immune response to protect the wound