CRCST CRCST Microbiology and Infection Control 2

Question 1

What does 'bioburden' mean in the context of instrument reprocessing?

Accepted Answer

The total number of microorganisms present on an item before sterilization

Answer

The weight of an instrument set

Answer

The chemical load in a sterilizer chamber

Answer

The cost of reprocessing a tray

Question 2

What type of precautions are used for ALL patients regardless of diagnosis in healthcare settings?

Accepted Answer

Standard precautions

Answer

Airborne precautions

Answer

Contact precautions

Answer

Droplet precautions

Question 3

Which bloodborne pathogen is of the GREATEST concern for CS technicians handling contaminated sharps?

Accepted Answer

Hepatitis B virus (HBV)

Answer

Hepatitis A virus (HAV)

Answer

Rhinovirus

Answer

Streptococcus pyogenes

Question 4

What does 'high-level disinfection' (HLD) achieve that 'intermediate-level disinfection' does NOT?

Accepted Answer

Destruction of all microorganisms except large numbers of bacterial spores

Answer

Removal of all chemical residue

Answer

Sterilization of all items

Answer

Cleaning of gross soil

Question 5

Why is thorough mechanical cleaning considered the most important step in the reprocessing cycle?

Accepted Answer

It removes organic material that would shield microorganisms from disinfectants and sterilants

Answer

It makes instruments look new

Answer

It prevents rusting

Answer

It complies with billing requirements

Question 6

Which microorganism classification includes HIV, hepatitis B, and hepatitis C viruses?

Accepted Answer

Bloodborne pathogens

Answer

Prions

Answer

Fungi

Answer

Gram-positive bacteria