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BDS4 BAMS Patient Safety > Decontamination > Flashcards

Decontamination Flashcards

1
Q

What standards should be followed with regard to sterilisation ?

A

SHTM 2030 (01-01 Part C)
Scottish Health Technical Memorandum

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2
Q

What standards should be followed with regard to automated cleaning and disinfection ?

A

SHTM 2030 (01-01 Part D)
Scottish Health Technical Memorandum

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3
Q

What standards should be followed with regard to decontamination in LDUs ?

A

SHTM 2030 (01-05 Part B)
Scottish Health Technical Memorandum

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4
Q

What standards does the SHTM guidance follow ?

A

BS EN
ISO
SDCEP

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5
Q

What is the purpose of cleaning (step 2) ?

A

Remove all biological matter from surface of instruments which might prevent proper disinfection/sterilisation.
Including removal of proteins and prions (vCJD).

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6
Q

What are the 3 options for cleaning methods ?

A

Automatic washer disinfector.
Ultrasonic bath.
Manual cleaning.

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7
Q

What are the two types of manual cleaning ?

A

Immersion and non-immersion.

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8
Q

What are the advantages of using automatic washer disinfectors ?

A

Traceability.
Consistency.
Reduce risk of human error.
Removal of proteins and prions which might damage device or prevent adequate sterilisation.
Achieves steam contact with all surfaces of the instruments.

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9
Q

What are the daily checks which should be carried out for AWDs ?

A

Check spray arm moves freely.
Check there is no blockage of water jets.
Remove and clean strainers and filters and check there is no debris.
Check condition of door seal.
Suitable amount of disinfectant in reservoir.
ACT - automatic control test.

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10
Q

What does the automatic control test measure (ACT) ?

A

Disinfection temperature of first cycle.

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11
Q

What weekly tests should be carried out for automated washer disinfector (AWD) ?

A

Water hardness (of all process stages).
Water conductivity (final rinse stage).
Cleaning efficacy test by residual soil detection.

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12
Q

What are the stages of a automatic washer disinfector (AWD) ?

A
  1. Flush/prewash (<35 degrees).
  2. Main wash with detergent (MI).
  3. Rinse (<65 degrees).
  4. Thermal disinfection (90-95 degrees).
  5. Dry (100 degrees hot air).
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13
Q

What type of detergency should be used in AWD ?

A

Alkaline detergent.

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14
Q

What type of water should be used in AWD ?

A

Tap water.

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15
Q

When should an US bath be used in cleaning stage ?

A

AWD has failed to remove matter.
Washer is out of service.

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16
Q

What type of water should be used in US bath ?

A

Tap water of 20-30 degrees.

17
Q

What type of detergent should be used in US bath ?

A

Enzymatic/pH neutral detergent.

18
Q

What test should be carried out before any production cycle for an US bath ?

A

Degas cycle - removes air and gas from water which will reduce efficacy of cleaning.

19
Q

What should be used for inspection of the instruments following cleaning ?

A

Illuminated magnifier.

20
Q

If there is contamination still present following cleaning, what should be done ?

A

Process through AWD again or US bath.

21
Q

What are the four requirements for adequate sterilisation (step 5) ?

A

Achieve temperature of 134-137 degrees.
Achieve 2.5 bar gauge pressure.
At least 3 minute hold time.
Drying stage.

22
Q

What type of water can be used in sterilisation ?

A

Reverse osmosis.
Distilled water.
Sterile water.

23
Q

Why is a Type N steriliser not recommended ?

A

Can leave air pockets, air cannot achieve temperature same as steam.
Therefore, not all surfaces will achieve sterilisation temperature for minimum hold time.

24
Q

What instruments cannot be processed through a Type N steriliser ?

A

Wrapped instruments.
Lumened.

25
Q

Are devices sterile or sterilised at point of use after Type N sterilisation ?

A

Sterilised - packaged after processing.

26
Q

Why is Type B steriliser recommended ?

A

Removes all air and creates vacuum.
Chamber fills with steam.
Meaning steam contact is made with all surfaces of the machine and instruments due to vacuum.

27
Q

What daily tests should be carried out for Type B steriliser ?

A

Steam penetration test.

28
Q

What weekly tests should be carried out for Type B steriliser ?

A

Air leakage test.
Air detection function test.
ACT.

29
Q

What two tests packs can be used for steam penetration test ?

A

Bowie Dick.
Helix.

BDS4 BAMS Patient Safety (2 decks)

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