CRCST Quality Assurance 3

Question 1

Which action should be taken first when a sterilizer load fails a biological indicator (BI) test?

Accepted Answer

Quarantine all items from that load and investigate the cause

Answer

When a BI fails, all items from that load must be recalled or quarantined immediately, and an investigation into the root cause must be initiated before any items are used.

Question 2

What does 'D-value' mean in the context of sterilization quality assurance?

Accepted Answer

The time or dose required to reduce the microbial population by 90% (1 log)

Answer

The D-value (decimal reduction value) is the time or radiation dose required to reduce the number of microorganisms by 90%, or one logarithmic unit.

Question 3

Which sterilization quality record must be retained to allow for instrument tracking in the event of a recall?

Accepted Answer

Load content records linking items to a specific sterilization cycle

Answer

Load content records that link specific instruments or implants to a sterilization cycle number are essential for effective traceability and recall management.

Question 4

How often should mechanical/physical parameters (time, temperature, pressure) of a sterilizer be reviewed for each cycle?

Accepted Answer

For every sterilization cycle run

Answer

Mechanical monitoring of sterilizer parameters must be reviewed for every cycle to ensure the equipment is functioning within acceptable ranges before items are released.

Question 5

What is the significance of the '12D concept' in sterilization?

Accepted Answer

Sterilization must achieve 12 log reductions of Clostridium botulinum spores

Answer

The 12D concept, originating from food canning, requires achieving a 12-log reduction of the most resistant organism (Clostridium botulinum) to ensure safety.

(CRCST) Certified Registered Central Service Technician Exam Practice Test

(CRCST) Certified Registered Central Service Technician Exam Practice Test

CRCST Quality Assurance 3