CHAPTER 20: PRINCIPLES AND TECHNIQUES OF DISINFECTION

Question 1

Clinical contact surfaces

Answer 1

directly contaminated by direct spray or spatter

Question 2

Single use items

Answer 2

aka disposable items. (usually made of plastic)

Question 3

Pre-cleaning

Answer 3

to clean before disinfecting

reduces the number of micro organisms and removes bioburden

Question 4

soap and water can be used for pre cleaning. true or false?

Answer 4

true

Question 5

what are the three levels of disinfection

Answer 5

high level
intermediate level
low level

Question 6

what is a high level disinfection

Answer 6

high level disinfectant with a short contact time and a sterilant when used with a prolonged contact time

Question 7

what is intermediate level disinfection

Answer 7

hospital disinfectant w/ tuberculocidal activity

used in dental offices

Question 8

what is low level disenfection

Answer 8

non-tuberculocidal

not to be used in dental offices

Question 9

are spores killed during disinfecting procedures?

Answer 9

no

Question 10

what is a disinfectant

Answer 10

chemicals that kill microorganisms (some not all) to inanimate surfaces

Question 11

what is antiseptic

Answer 11

antimicrobial agents that are used on living tissue (skin)

ex. hand sanitizer

Question 12

what is a sterliant?

Answer 12

kills ALL microorganisms

Question 13

sporicidal

Answer 13

chemical capable of killing spores

Question 14

virucidal

Answer 14

product capable of killing viruses

Question 15

what is sanicloth plus

Answer 15

germicidal disposable cloth

Question 16

residual activity

Answer 16

action that continues long after initial application

Question 17

iodophors

Answer 17

intermediate level hospital disinfectant with tuberculocidal action

( may also be used as an immersion disinfectant for nonhydrocolloid impressions)

Question 18

sodium hypochlorite

Answer 18

house hold bleach (intermediate disinfection)

Question 19

immersion disinfectants

Answer 19

chemicals that can be used for sterilization or high level disinfection.

Question 20

glutaraldehyde

Answer 20

high level disinfectant/sterilant. it can be used as a liquid sterilant when the immersion time is greatly incerased (10 hours)

Question 21

chlorine dioxide

Answer 21

high level disinfectant/sterilant

Question 22

cold soak

Answer 22

soaking instruments in chemicals for 10 hours for sterilization

Question 23

HVE

Answer 23

high volume evacuation

reduces escape of saliva and spatter from patients mouth

Question 24

what type of fabric should be avoided in a dental patient room/lab and why

Answer 24

carpet. collects more bacteria and harder to clean

Question 25

what time should an acceptable disinfectant be able to kill Mycobacterium bacteria (TB)

Answer 25

10 mins or less

Question 26

what are the two methods used to deal with surface contamination?

Answer 26

prevent (barriers)

pre-clean and disinfect between patients

Question 27

two intermediate level disinfectants

Answer 27

iodophor

phenols

Question 28

three high level disinfectant/sterilants

Answer 28

glutaraldehyde
chlorine dioxide
oral pthaladehyde

Question 29

the cdc guidelines for infection control divides environmental surfaces into:

Answer 29

clinical contact surfaces

housekeeping surfaces

Question 30

clinical surfaces are classified under which 3 catergories?

Answer 30

touch
transfer
splash, spatter and droplet.