Decon

Question 1

non critical (spaulding classification)

Answer 1

contact with intact skin or mucous membranes only
e.g chair, light handle
requires cleaning and low level disinfection

Question 2

critical (spaulding classification)

Answer 2

penetrates skin or is in contact with normally sterile tissues e.g bloodstream or bone
e.g scalpel, forceps
requires high level disinfection and sterilisation

Question 3

semi critical (spaulding classification)

Answer 3

contact with non intact skin or mucous membranes but no contact with bloodstream or normally sterile tissues
e.g mirror, reusable impression trays
requires high level disinfection

Question 4

instrument processing cycle (9, in order)

Answer 4

washing
disinfection
inspection
packaging
sterilisation
transport
storage
transport
use

Question 5

what temperature should water be when cleaning/ washing instruments and why

Answer 5

less than 35 degrees
above this proteins coagulate and are more difficult to remove

Question 6

aim of cleaning stage

Answer 6

remove proteins and prions that can withstand high temperatures

Question 7

hierarchy of cleaning methods

Answer 7

AWD - first choice, legal requirement
ultrasonic - if first AWD failed
Manual - if AWD and ultrasonic failed (or only able to manual)

Question 8

4 requirements of an instrument transport box

Answer 8

rigid
tight fitting lid
leak proof
colour coded or clearly labeled

Question 9

two main reasons for using the washer disinfector as first choice

Answer 9

consistency
traceability

Question 10

discuss manual cleaning

Answer 10

done as last resort
ideally using immersion technique with long handled soft bristled brush
tap water and pH neutral detergent
water <35 degrees

Question 11

how does ultrasonic work

Answer 11

produces soundwaves which cause microbubbles to form
when these contact hard surfaces of instruments they collapse having a scouring effect on instruments
process is known as cavitation

Question 12

what must be done prior to running an ultrasonic cycle

Answer 12

degas cycle
remove any air/gas bubbles that would decrease machine efficacy

Question 13

what are the 5 stages of an AWD cycle

Answer 13

pre wash
main wash
rinse
thermal disinfection
dry

Question 14

thermal disinfection temperature and hold time

Answer 14

90-95 degrees for at least 1 minute

Question 15

what stage of AWD requires detergent

Answer 15

main wash - pH neutral detergent

Question 16

what is used for inspection

Answer 16

illuminated magnifier

Question 17

4 types of water that can be used for sterilisation

Answer 17

reverse osmosis
distilled
de-ionised
sterile

Question 18

what are the 3 types of steriliser

Answer 18

Type N - basic
Type B - vacuum capable (wrapped, channeled and lumened)
Type S - specialised

Question 19

sterilisation temperature, pressure and hold time

Answer 19

134-137
2.05-2.35 (atmospheric) bar gauge
minimum 3 mins

Question 20

what are the 4 elements of the sinner cycle

Answer 20

time
temperature
chemicals
energy

Question 21

name 4 daily tests for the AWD

Answer 21

check spray arms rotate
check filter for debris
check door seal for damage
check load carrier undamaged
check chemical level

Question 22

name 4 daily checks for the steriliser

Answer 22

fill and drain water daily
check chamber for debris
check load carrier undamaged
check door seal undamaged

Question 23

type B steriliser - name a daily and weekly test

Answer 23

daily: bowie dick steam penetration
weekly: air detector function test, air leakage test