3: Preparation for aseptic surgery Flashcards Preview

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Flashcards in 3: Preparation for aseptic surgery Deck (34):
1

Sterilization

destruction of all living organisms

2

Chemical indicators

do not provide time exposed to temperature
paper strips

3

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

Chlorhexidine

4

Shelf life of double wrapped paper

Closed: 6 months
Open: 3 months

5

Most common agents used in chemical sterilization

ethylene oxide
Plasma

6

Biological indicator

truly indicates sterility

7

How should muslin be wrapped

double thickness

8

Heat

Can be dry or wet (100% humidity)

9

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

Iodophors
(betadine)

10

Steam sterilization

Uses pressure to reach high temps
permeates porous substances
autoclave

11

Shelf life of double wrapped muslin

Closed cabinet: 8 weeks
Open shelves: 4 weeks

12

Dry heat

oxidation process
slow
not common

13

Can you sterilize the skin

no

14

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

antiseptics

15

Shelf life of plastic/paper pouches

Closed: 1 year
Open: 6 months

16

Filtration

separation of particulate matter from liquids and gasses

17

Cold sterilization

soaking instruments in disinfectant
not recommended

18

3 types of physical sterilization

Filtration
Radiation
Heat

19

Radiation

used when heat or chemicals don't work
commercial pre-packaged suture

20

3 basic principles of aseptic techniques

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

21

Problems with ethylene oxide

explosive
poison

22

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

48 hours

23

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

Iodine preparations

24

When do you use chemical sterilization

Delicate sharp edges
some plastics
optical viewing systems

25

Most common agents used for preop skin prep in dogs

Chlorhexidine and iodophor compounds

26

Disadvantages of iodophors

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

27

common alcohol rub skin antiseptic

Ethyl alcohol

28

3 types of sterility indicators

Physical
chemical
Biological

29

wet heat

denaturation of bacterial protein molecules
100% humidity
common

30

Flash autoclave

270 degrees
rubber things damaged
emergency

31

Physical indicators

built into sterilizer
thermometers
interior of surgical pack not monitored

32

Shelf life of sterile single wrapped muslin

closed: 1 week
Open shelves: 2 days

33

Disinfectant

agent that destroys or inactivates microorganisms

34

What should be included in surgical instrument packs sterilized

Not suture
gowns, towels, drapes folded specifically