Costley Module 3

Question 1

3 objectives for infection control

Answer 1

Reduce pathogens to tolerable levels
Eliminate cross contamination
Standard precautions

Question 2

3 methods of pre cleaning instruments?

Answer 2

Washer/thermal disinfector
Ultrasonic processor
Manual scrubbing

Question 3

Advantages of ultrasonic bath for pre cleaning of instruments

Answer 3

Increased efficiency 
Improved effectiveness 
Reduced danger to clinician 
Bette Penetration into instrument areas 
Eliminates scrubbing which produces aerosols

Question 4

Ultrasonic:

Guard against —- instruments must be —- —–

Answer 4

Overloading

Completely immersed

Question 5

Non stainless steel instruments require you to do what before sterilizing

Answer 5

Pre dip in rust inhibitor

Question 6

Color change indicators indicate what?

Answer 6

Sterilizer reached a specific temp NOT that they are sterile

Question 7

What are the approved methods of sterilization

Answer 7

Steam under pressure
Dry heat
Chemical vapor

Question 8

Steam under pressure includes what two methods

Answer 8

Gravity displacement

Prevacuum

Question 9

Gravity displacement takes how long and what temperatures

Answer 9

15-30min
250F
121C

Question 10

Pre vacuum sterilization takes how long and at what temperatures

Answer 10

3.5-10min
270F
132C

Question 11

Dry heat ovens take how long and at what temperatures

Answer 11

120min
320F
160C

Question 12

Chemical vapor takes how long and at what temperatures

Answer 12

20min
270F
132C

Question 13

What are the 3 tests for sterilization

Answer 13

Internal indicator
External indicator
Biological indicator

Question 14

What are the 2 types of dry heat sterilization

Answer 14

Static and forced air

Question 15

What is the ingredient used in chemical vapor sterilization

Answer 15

Formaldehyde

Question 16

The external indicator strip says what?

Answer 16

Temperature was reached

Question 17

The internal indicator says what

Answer 17

Instruments were exposed to temp and steam for required time

Question 18

The biological indicator says what

Answer 18

The autoclave is functioning properly

Question 19

Biological testing is done how often

Answer 19

1xweek

Question 20

Moist heat sterilizing —- but has the — temp

Dry heat takes the —- time

Answer 20

corrodes
lowest
Longest

Question 21

Steam autoclaves use —- bacteria test strips vials ampules

Answer 21

Geobscillus stearothermophilus

Question 22

Dry heat uses —- bacteria

Answer 22

Bacillus ateophaeus

Question 23

Chemical vapor uses — bacteria

Answer 23

Geobscillus stearothermophilus

Question 24

Moist heat cause distraction of Microorganisms by?

Answer 24

Coagulation of essential proteins

Question 25

Moist heat can't be used on what type of materials

Answer 25

Oils Waxes Powders

Question 26

The most economical method of sterilization is?

Answer 26

Steam autoclave

Question 27

One disadvantage of steam under pressure is?

Answer 27

Corrosion of carbon steel instruments

Question 28

The action of dry heat is?

Answer 28

Oxidation

Question 29

High level chemical disinfectants inactivate ----- and --- Microorganisms

Answer 29

Spores | All forms

Question 30

High level chemical disinfectants can be used as sterilants if?

Answer 30

Left in for a long time

Question 31

Intermediate level chemical disinfectants inactivate --- but not ---

Answer 31

All Microorganisms | Spores

Question 32

Low level chemical disinfectants inactivate ---- but not?

Answer 32

Vegetative bacteria and lipid viruses | Spores TB and non lipid viruses

Question 33

Definition of Critical items Do you sterilize or disinfect Examples

Answer 33

Items that penetrate soft tissue/bone Sterilize or dispose Needles,probes,explorers,ultrasonic tip, curets

Question 34

Definition of Semi-critical items Sterilize or disinfect Examples

Answer 34

Touch intact mucous membranes and oral fluids Sterilize or high level disinfection Bite blocks, mirrors, ultrasonic handpiece

Question 35

Definition of Non-critical items Sterilize or disinfect Examples

Answer 35

Only contacts unbroken epithelium Clean and use intermediate level disinfectant Light handles, eyewear, bite sticks

Question 36

Definition of Environmental items Sterilize or disinfect Examples

Answer 36

No contact with pt surfaces Clean and intermediate to low level disinfection Countertops etc

Question 37

Flush water lines at beginning of the day for how long? And how long between pts?

Answer 37

2min | 30sec

Question 38

What should you do before giving a shot?

Answer 38

Apply antiseptic to reduce bacteria

Question 39

You should do what before scaling into pockets

Answer 39

Apply/swab with antiseptic solution