chpt 19&20 environmental infection control

Question 1

environmental surfaces consist of

Answer 1

housekeeping and clinical contact surfaces

Question 2

clinical contact surfaces consist of 3 categories

Answer 2

touch, transfer and splash, spatter and droplet surfaces

Question 3

touch surface is

Answer 3

directly touched or contaminated

Question 4

transfer surfaces are

Answer 4

non directly touched but often are touched by contaminated instruments

Question 5

splash, spatter and droplet surfaces

Answer 5

do not actually contact DHCP or contaminated instruments

Question 6

surface barriers are used

Answer 6

on hard to clean, high contact surfaces

Question 7

single use items may include

Answer 7

saliva ejectors, pastiest bibs, gloves, masks, prophy cups, needles, sharps container

Question 8

disposable or reusable items

Answer 8

impression trays, fairwater syringes , evacuation tips, holder for X-ray film, traps

Question 9

procedure for pre-cleaning and disinfecting

Answer 9

spray wipe spray

Question 10

what is bioburden

Answer 10

saliva, blood and other bodily fluids

Question 11

what are disinfectant precautions

Answer 11

following manufacturers guidlines

Question 12

significance of an evacuator system

Answer 12

controlling aerosols that are produced during procedure

Question 13

disinfectants

Answer 13

applied to inanimate objects

Question 14

antiseptics

Answer 14

applied to living tissue

Question 15

only products that are registered with the epa as hospital disinfectants with tuberculocidal claims should be used

Answer 15

true

Question 16

2 purposes in which disinfectants are used in dentistry

Answer 16

holding solution for dirty instruments prior to cleaning and sterilization AND as a surface disinfectant for contaminated working areas

Question 17

sterilization is the destruction of

Answer 17

ALL microbial life

Question 18

chlorine dioxide

Answer 18

high level disinfectant, used only on items not subject to corrosion, fast acting (3 minutes)

Question 19

glutaraldehyde

Answer 19

high level disinfectant, used for items that cannot withstand heat (plastics), disinfect 10-90 mins

Question 20

iodophors

Answer 20

intermediate level, effective in 5-10 mins, used for disinfecting soiled surfaces

Question 21

sodium hypochlorite

Answer 21

intermediate level, 10-20 mins, NOT EPA APPROVED, fast acting

Question 22

synthetic phenol compounds

Answer 22

intermediate level, broad spectrum activity, 10 mins, can leave residual film, used for surface disinfection provided its been cleaned first

Question 23

ortho-phthalaldehyde

Answer 23

high level, 12 min, used on heat sensitive instruments, can stain

Question 24

ideal disinfectant

Answer 24

kills tb bacteria, era registered, no damage to surface being treated

Question 25

chlorine dioxide and glutaraldehyde can be used as chemical sterilants if immersion time is increased

Answer 25

true

Question 26

impressions should be

Answer 26

rinsed under water, disinfected

Question 27

alginate impressions should be

Answer 27

sprayed with liquid sterilant, then sealed in a airtight bad