CRCST CRCST Microbiology and Infection Control

Question 1

Which type of microorganism is the MOST resistant to standard sterilization methods?

Accepted Answer

Bacterial spores

Answer

Gram-positive bacteria

Answer

Gram-negative bacteria

Answer

Viruses

Question 2

What is the Spaulding Classification used for in central service?

Accepted Answer

Categorizing medical devices by the level of disinfection or sterilization required

Answer

Classifying employee roles

Answer

Ranking sterilization chemical costs

Answer

Ordering surgical instruments by size

Question 3

Which Spaulding category applies to instruments that enter sterile tissue or the vascular system?

Accepted Answer

Critical

Answer

Non-critical

Answer

Semi-critical

Answer

Minimal-risk

Question 4

What is the correct term for killing all microorganisms including bacterial spores on inanimate objects?

Accepted Answer

Sterilization

Answer

Disinfection

Answer

Sanitization

Answer

Antisepsis

Question 5

Which organism is used as the biological indicator (BI) for steam sterilization?

Accepted Answer

Geobacillus stearothermophilus

Answer

Staphylococcus aureus

Answer

Bacillus atrophaeus

Answer

Mycobacterium tuberculosis

Question 6

What is the Chain of Infection, and why is it important in CS?

Accepted Answer

The sequence of elements required for an infection to spread, which CS interrupts by reprocessing instruments

Answer

A supply ordering process

Answer

A type of instrument linkage

Answer

A hospital policy document