CBIC CBIC Sterilization and Disinfection 3

Question 1

Which concentration of sodium hypochlorite (bleach) is recommended by the CDC for disinfecting surfaces contaminated with C. difficile spores?

Accepted Answer

0.5% (5,000 ppm)

Answer

0.05% (500 ppm)

Answer

0.1% (1,000 ppm)

Answer

5.0% (50,000 ppm)

Question 2

Low-level disinfection is appropriate for which type of non-critical medical equipment?

Accepted Answer

Blood pressure cuffs and stethoscopes

Answer

Bronchoscopes

Answer

Urinary catheters

Answer

Surgical instruments

Question 3

Which sterilization method uses hydrogen peroxide plasma and is suitable for moisture-sensitive devices?

Accepted Answer

STERRAD (hydrogen peroxide gas plasma)

Answer

Steam autoclave

Answer

Dry heat sterilization

Answer

Formaldehyde sterilization

Question 4

Which term describes the process of removing contamination from an item to make it safe for handling by unprotected personnel?

Accepted Answer

Decontamination

Answer

Sterilization

Answer

Pasteurization

Answer

Sanitization

Question 5

What is the recommended contact time for most EPA-registered intermediate-level disinfectants on environmental surfaces?

Accepted Answer

Follow manufacturer's specified wet contact time

Answer

Wipe and immediately dry

Answer

Exactly 5 minutes regardless of product

Answer

10 minutes minimum for all products

Question 6

Which practice is essential to prevent biofilm formation in automated endoscope reprocessors (AERs)?

Accepted Answer

Regular maintenance and high-level disinfection of the AER itself

Answer

Running the AER empty between cases

Answer

Using only glutaraldehyde in all AER models

Answer

Soaking endoscopes in water overnight