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FINALS > Decon > Flashcards

Decon Flashcards

1
Q

what is the definition of a critical device

A

device that penetrates soft tissues, makes contact with bone and enters or contacts bloodstream

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2
Q

what is the definition of a semi-critical device

A

device that comes into contact with non-intact skin or mucous membranes but does not penetrate soft tissue

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3
Q

what is the definition of a non-crital device

A

device that only comes into contact with the skin and intact mucous membranes

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4
Q

what are the stages in the life cycle for processing instruments

A

cleaning
disinfection
inspection
packaging
sterilisation
transport
storage
use
transport

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5
Q

name three reasons why instruments are cleaned before sterilisation

A

minimise spread of contamination
to achieve steam contact
legal requirement

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6
Q

what is the type B steriliser

A

vacuum type

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7
Q

what is the type N steriliser

A

non-vacuum type

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8
Q

what is an operator

A

defined as a person with the authority to operate a WD

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9
Q

what are the two types of manual cleaning methods

A

immersion
non-immersion

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10
Q

what are the recommendations for manual cleaning

A

chemical doses based on manufacturers instructions (5milliltres per 1 litre of water)
temperature must not exceed 35 degrees
60ml of chemical per 12L of water

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11
Q

why may instruments need to be scrubbed below the surface of the water

A

instruments must be in contact with water and detergent
minimise splashing
minimise aerosols

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12
Q

when should manual cleaning be carried out

A

specifically recommended in manufacturers instructions
no alternative
WD or ultrasonic has failed to remove contamination

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13
Q

what is the ultrasonic bath

A

considered a back up option for the WD

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14
Q

how does the ultrasonic operate

A

uses soundwaves at high frequencies to produce bubbles that implode and have scouring effect on the hard surface of instruments

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15
Q

what is the process of cavitation in an ultrasonic machine

A

sound waves pass through the water causing micro-bubbles to form
fluctuation in pressure causes bubbles to expand and then collapse

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16
Q

what is the operating temperature for the ultrasonic

A

between 20-30 degrees

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17
Q

what must be ran before instruments can be cleaned in an ultrasonic

A

degas cycle

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18
Q

what must be recorded from the degas cycle of an ultrasonic

A

date
cycle number
detergent added
temperature
time
operator name

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19
Q

what must occur following manual or ultrasonic cleaning

A

they must be processed through the WD

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20
Q

name the stages of the WD

A

pre-wash
wash
rinse
thermal disinfection
drying

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21
Q

what is the temperature for the prewash stage

A

less than 35 degrees

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22
Q

what is the temperature for the wash stage

A

dependent on chemical used

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23
Q

what is the temperature for the rinse stage

A

less than 65 degrees

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24
Q

what is the temperature required for thermal disinfection

A

90-95 degrees for minimum hold of one minute

25
Q

what is the temperature for the drying stage

A

100 degrees

26
Q

name five daily checks for the WD

A

check spray arms spin freely
check spray jets are not blocked
no debris in strainer or filter
check door seal
make sure there is enough chemical in reservoir

27
Q

name four loading requirements of the WD

A

clip trays must be used and positioned correctly
hinged instruments open at the hinge
all assemblies must be disassembled
no overlapping equipment

28
Q

what is used for inspecting instruments after the WD

A

illuminated magnifier

29
Q

if following inspection after WD there is still contamination, what can be carried out next

A

process through ultrasonic or manual cleaning
after ultrasonic or manual cleaning they must go back through the WD

30
Q

give three reasons why steam sterilisation is used

A

non-toxic component
no waste except pure water
main ingredient is water which is readily available

31
Q

what are the four types of purified water that can be used in the steam steriliser

A

reverse osmosis
de-ionised
distilled
sterile

32
Q

what cannot be processed in a type N steriliser

A

channelled or lumened instruments
wrapped instruments

33
Q

what is the temperature required for steam sterilisation and what is the corresponding pressure for this

A

134-137 degrees celsius
2.05-2.35 bar gauge
3.05-3.35 for pressure ABSOLUTE

34
Q

how long must the steam sterilisation hold the temperature of 134-137 degrees for

A

3 minutes

35
Q

name five daily tests for the steam steriliser

A

check door seals are intact
verify the chamber is free from damage
verify condition of load carrier
steam penetration test
drain used water reservoir

36
Q

give 2 examples of steam penetration tests

A

Bowie Dick test pack
Helix

37
Q

what weekly tests are required for steam sterilisers

A

air leakage test
air detector function test

38
Q

what must the container for transporting instruments be (4 points)

A

rigid sided
tight fitting lid
leak proof
colour coded or clearly marked

39
Q

what guidance documents are available for steam sterilisation

A

SHTM 01-01 part C

40
Q

name five factors related to the ability to clean instruments properly

A

time
temperature
water
chemicals
energy

41
Q

what is sinner circle and what are the four elements

A

it shows the 4 key elements required for successful cleaning process
energy
temperature
time
chemicals

42
Q

what part of the SHTM 01-01 is referenced for Automated Cleaning and Disinfection (WD)

A

part D

43
Q

what are the four weekly tests for a WD on top of the daily tests

A

water hardness
water conductivity in final rinse
cleaning efficacy test by residual soil detection

44
Q

what are the quarterly tests for a WD on top of daily and weekly tests

A

thermometric tests
doors and door interlocks
chemical dosage checks

45
Q

what are the weekly tests for the steam steriliser on top of the daily tests

A

air leakage tests
air detector function tests
automatic control test

46
Q

how should sterile medical devices be stored

A

in a manner that will not compromise their quality including the sterility status

47
Q

what is the definition of a medical device

A

instrument to be used for
- diagnosis, prevention, prognosis or treatment
- investigation, replacement, modification of anatomy
- devices for control or support of conception

48
Q

what is SHTM

A

scottish health technical memoranda (01- 01 focuses on decon in CDU)

49
Q

which part of SHTM focuses on decontamination in LDU

A

SHTM 01-05

50
Q

what protection act is relevant to verify the equipment we use has gone through rigorous testing

A

the consumer protection act

51
Q

what should instruments be marked with if they are from a reputable company

A

CE (UKCA)

52
Q

what information is required in the automatic control test (ACT) about the cycle data for a WD

A

cycle number
wash temperature
disinfection temperature
cycle duration

53
Q

what information should be recorded from the sterilisation process

A

operator
date
time started
cycle number
sterilisation temperature
if sterilisation was successful

54
Q

where can you find information about buying dental instruments and staff training

A

SDCEP

55
Q

what is a CP(D)

A

competent person (decontamination)
the person designated to carry out maintenance, validation and periodic testing of WDs and sterilisers

56
Q

what does lubrication of handpieces provide

A

prevents build up of scale
keeps fine spray nozzles free

57
Q

what are the top 5 handpiece faults

A

incorrect or inadequate lubrication
poor or inadequate cleaning
incorrect instrument usage
damaged or oversized bur fitted
incorrect compressor settings

58
Q

what should never be used to clean handpieces

A

ultrasonic baths

FINALS (25 decks)

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