AMCA Infection Prevention 2 — Questions and Answers
Question 1: Which type of isolation precaution requires the use of an N95 respirator?
- Contact precautions
- Droplet precautions
- Airborne precautions (Correct answer)
- Standard precautions
Correct answer: Airborne precautions
Airborne precautions require an N95 or higher respirator because pathogens like tuberculosis and measles travel on small particles that remain suspended in the air.
Question 2: A patient is admitted with a draining wound. Which personal protective equipment (PPE) is required when changing the dressing?
- Gloves only
- Gloves and gown (Correct answer)
- Mask and eye protection only
- No PPE is needed if the wound is small
Correct answer: Gloves and gown
Gloves and a gown are required when handling draining wounds to prevent contact transmission of pathogens to skin and clothing.
Question 3: What is the correct order for donning PPE?
- Gloves, gown, mask, eye protection
- Gown, mask, eye protection, gloves (Correct answer)
- Mask, gloves, gown, eye protection
- Eye protection, gloves, gown, mask
Correct answer: Gown, mask, eye protection, gloves
The correct donning order is gown first, then mask or respirator, then eye protection, and finally gloves to maintain a contamination-free sequence.
Question 4: Which of the following best describes a healthcare-associated infection (HAI)?
- An infection contracted in the community before hospital admission
- An infection that develops 48 hours or more after hospital admission (Correct answer)
- Any infection caused by antibiotic-resistant organisms
- An infection acquired by healthcare workers from patients
Correct answer: An infection that develops 48 hours or more after hospital admission
A healthcare-associated infection is one that develops 48 hours or more after hospital admission and was not present or incubating at the time of admission.
Question 5: What is the primary purpose of cleaning a surface before disinfection?
- To kill all microorganisms present
- To remove organic matter that can inactivate disinfectants (Correct answer)
- To apply the disinfectant more evenly
- To reduce the time needed for disinfection
Correct answer: To remove organic matter that can inactivate disinfectants
Cleaning removes organic matter such as blood and body fluids that can physically protect pathogens and chemically inactivate disinfectant agents.
Question 6: A healthcare worker sustains a needlestick injury from a patient with unknown HIV status. What is the FIRST action to take?
- Immediately report the incident to a supervisor
- Wash the site thoroughly with soap and water (Correct answer)
- Request post-exposure prophylaxis (PEP) medications
- Test the patient for HIV
Correct answer: Wash the site thoroughly with soap and water
The first action following a needlestick injury is to immediately wash the wound with soap and water to reduce the risk of pathogen transmission.
Question 7: Which organism is the most common cause of healthcare-associated urinary tract infections?
- Staphylococcus aureus
- Clostridium difficile
- Escherichia coli (Correct answer)
- Pseudomonas aeruginosa
Correct answer: Escherichia coli
Escherichia coli is the most common causative organism of catheter-associated urinary tract infections (CAUTIs) in healthcare settings.
AMCA Infection Prevention 2
Which type of isolation precaution requires the use of an N95 respirator?