CRCST Quiz Chapter 9

15 Questions | Total Attempts: 9949

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CRCST Quiz Chapter 9

Cleaning and decontamination


Questions and Answers
  • 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

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