CRCST Quiz Chapter 9
Cleaning and decontamination
- 1.Softened water:
- A.
Is not compatible with detergents
- B.
Can cause rusting of metal instruments
- C.
Increases the likelihood of mineral scale deposits
- D.
Decreases the likelihood of mineral scale deposits
- 2.Which of the following is an example of regulated medical waste?
- A.
General trash from the surgery department
- B.
Blood-soaked sponges
- C.
Used copier toner cartridges
- D.
Discarded sterilization wraps
- 3.Water must be degassed each time the ultrasonic cleaner's tank is changed, because:
- A.
Excess bubbles make it difficult to see items being cleaned.
- B.
Excess bubbles decrease the temperature of the tank.
- C.
Excess bubbles from filling reduce the energy of the cavitation process.
- D.
Excess bubbles reduce the effectiveness of the detergent.
- 4.Detergents used in mechanical cleaners should be:
- A.
Low acid
- B.
Low alkaline
- C.
Low foaming
- D.
Low temperature
- 5.What is the preferred pH for detergents used for most cleaning processes?
- A.
Low pH
- B.
It depends on the water temperature and exposure time.
- C.
Neutral pH
- D.
High pH
- 6.To prevent coagulation of proteins, water temperature should be:
- A.
Above 43°C (110°F)
- B.
Below 100°C (212°F)
- C.
Below 24°C (7 °F)
- D.
Below 43°C (110°F)
- 7.The desired solution for cleaning instruments is:
- A.
A detergent
- B.
Steam
- C.
A disinfectant
- D.
Soap
- 8.Pyrogens:
- A.
Are fever-producing substances
- B.
Are soil particles
- C.
Are microorganisms that have survived sterilization
- D.
Are fever-producing substances
- 9.These are used to breakdown fatty tissue on instruments:
- A.
Neutral pH cleaners
- B.
Amylase enzymes
- C.
Lipase enzymes
- D.
Protease enzymes
- 10.Instrument lubrication is preformed:
- A.
After cleaning
- B.
Before cleaning
- C.
After sterilization
- D.
Immediately before use
- 11.Which of the following statements about the use of mechanical washers is NOT true?
- A.
Multi-level trays should be separated
- B.
All items should be washed on the same cycle
- C.
Instruments should be disassembled and opened
- D.
Trays with lids should be opened
- 12.Aluminum items should be cleaned:
- A.
Using a circular motion
- B.
Using a water spray
- C.
Using a stiff metal brush
- D.
Using a to and fro motion with the grain
- 13.Specialized clothing or equipment worn by an employee for protection against a hazard is called:
- A.
Safety Apparel
- B.
Restricted Apparel
- C.
Personal Protective Equipment
- D.
Hazard Equipment
- 14.Written cleaning instructions for surgical instruments should be provided by:
- A.
The healthcare facility
- B.
The detergent manufacturer
- C.
The mechanical washer manufacturer
- D.
The instrument manufacturer
- 15.Powered surgical instruments:
- A.
Can be immersed
- B.
Should be cleaned using a mechanical washer
- C.
Can not be immersed
- D.
Should be cleaned at the point of use