CBET Sterilization and Infection Control Equipment 2

Question 1

What is the minimum concentration of glutaraldehyde required for high-level disinfection of semicritical medical devices?

Accepted Answer

2.0%

Answer

0.5%

Answer

1.0%

Answer

3.5%

Question 2

Which type of chemical indicator confirms that a package was exposed to sterilization conditions, not just that sterilization was achieved?

Accepted Answer

Class 1 process indicator

Answer

Class 5 integrating indicator

Answer

Class 6 emulating indicator

Answer

Biological indicator

Question 3

Dry heat sterilization at 160°C requires what minimum exposure time to achieve sterilization?

Accepted Answer

120 minutes

Answer

30 minutes

Answer

60 minutes

Answer

180 minutes

Question 4

A washer-disinfector used for surgical instrument reprocessing must achieve what temperature during the thermal disinfection phase to meet A0 600 standard?

Accepted Answer

90°C for 1 minute

Answer

60°C for 1 minute

Answer

71°C for 3 minutes

Answer

80°C for 10 minutes

Question 5

Which factor most significantly reduces the effectiveness of chemical sterilants and disinfectants?

Accepted Answer

Presence of organic matter (bioburden)

Answer

Low ambient temperature

Answer

High humidity in storage area

Answer

Plastic packaging materials

Question 6

What is the purpose of aeration after ethylene oxide (EtO) sterilization?

Accepted Answer

To remove toxic EtO residues from processed items

Answer

To activate the sterilant residuals

Answer

To cool the sterilization chamber

Answer

To re-humidify the sterilized materials

Question 7

When a BIOMED technician validates a new sterilizer installation, which test must be performed to confirm steam quality?

Accepted Answer

Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ)

Answer

Bowie-Dick test only

Answer

Biological indicator test only

Answer

Superheat test only