IAHCSMM Infection Prevention and Microbiology 4

Question 1

The effectiveness of chemical disinfectants can be reduced by the presence of:

Accepted Answer

Organic matter such as blood or soil

Answer

Organic matter consumes and inactivates chemical disinfectants, significantly reducing their germicidal effectiveness.

Question 2

Which CDC isolation category requires a private room and special air handling with negative pressure?

Accepted Answer

Airborne Infection Isolation

Answer

Airborne Infection Isolation requires negative pressure rooms to prevent airborne particles from spreading pathogens like M. tuberculosis.

Question 3

Methicillin-resistant Staphylococcus aureus (MRSA) is primarily a concern because it:

Accepted Answer

Is resistant to many common antibiotics used to treat infections

Answer

MRSA's resistance to beta-lactam antibiotics and other common antimicrobials makes infections significantly harder to treat.

Question 4

During the decontamination process, personal protective equipment (PPE) should be removed in which order?

Accepted Answer

Gloves, gown, mask, eye protection

Answer

Gloves are removed first because they are the most contaminated item, followed by gown, mask, and eye protection to prevent self-contamination.

Question 5

Which of the following best describes the concept of 'sterility assurance level' (SAL)?

Accepted Answer

The probability that a single unit is NOT sterile after processing

Answer

SAL is expressed as the probability (e.g., 10⁻⁶) that a single item is contaminated after sterilization processing.

(IAHCSMM) International Association of Healthcare Central Service Material Manage Practice Test