3: Preparation for aseptic surgery

Question 1

Sterilization

Answer 1

destruction of all living organisms

Question 2

Chemical indicators

Answer 2

do not provide time exposed to temperature

paper strips

Question 3

non-irritating to the skin
effective against gram + and -
bactericidal

Answer 3

Chlorhexidine

Question 4

Shelf life of double wrapped paper

Answer 4

Closed: 6 months
Open: 3 months

Question 5

Most common agents used in chemical sterilization

Answer 5

ethylene oxide

Plasma

Question 6

Biological indicator

Answer 6

truly indicates sterility

Question 7

How should muslin be wrapped

Answer 7

double thickness

Question 8

Heat

Answer 8

Can be dry or wet (100% humidity)

Question 9

antiseptics that bind to idodine.
non-toxic
non-irritating

Answer 9

Iodophors

betadine

Question 10

Steam sterilization

Answer 10

Uses pressure to reach high temps
permeates porous substances
autoclave

Question 11

Shelf life of double wrapped muslin

Answer 11

Closed cabinet: 8 weeks

Open shelves: 4 weeks

Question 12

Dry heat

Answer 12

oxidation process
slow
not common

Question 13

Can you sterilize the skin

Answer 13

no

Question 14

When antibacterial chemicals normally used on inanimate objects are also used on skin and wounds

Answer 14

antiseptics

Question 15

Shelf life of plastic/paper pouches

Answer 15

Closed: 1 year
Open: 6 months

Question 16

Filtration

Answer 16

separation of particulate matter from liquids and gasses

Question 17

Cold sterilization

Answer 17

soaking instruments in disinfectant

not recommended

Question 18

3 types of physical sterilization

Answer 18

Filtration
Radiation
Heat

Question 19

Radiation

Answer 19

used when heat or chemicals don’t work

commercial pre-packaged suture

Question 20

3 basic principles of aseptic techniques

Answer 20

1-prevent contamination of open wound
2-isolating the operative site from environment
3-creating a sterile field

Question 21

Problems with ethylene oxide

Answer 21

explosive

poison

Question 22

How long should you aerate before using instruments that were sterilized with ethylene oxide

Answer 22

48 hours

Question 23

reduces the bacterial flora of the skin
residual antibacterial activity
may cause burns if used on large areas of skin

Answer 23

Iodine preparations

Question 24

When do you use chemical sterilization

Answer 24

Delicate sharp edges
some plastics
optical viewing systems

Question 25

Most common agents used for preop skin prep in dogs

Answer 25

Chlorhexidine and iodophor compounds

Question 26

Disadvantages of iodophors

Answer 26

less effective in the presence of organic matter
dermal irritation
unreliable residual activity and toxicity

Question 27

common alcohol rub skin antiseptic

Answer 27

Ethyl alcohol

Question 28

3 types of sterility indicators

Answer 28

Physical
chemical
Biological

Question 29

wet heat

Answer 29

denaturation of bacterial protein molecules
100% humidity
common

Question 30

Flash autoclave

Answer 30

270 degrees
rubber things damaged
emergency

Question 31

Physical indicators

Answer 31

built into sterilizer
thermometers
interior of surgical pack not monitored

Question 32

Shelf life of sterile single wrapped muslin

Answer 32

closed: 1 week

Open shelves: 2 days

Question 33

Disinfectant

Answer 33

agent that destroys or inactivates microorganisms

Question 34

What should be included in surgical instrument packs sterilized

Answer 34

Not suture

gowns, towels, drapes folded specifically