CH 10 DISINFECTION Flashcards Preview

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Flashcards in CH 10 DISINFECTION Deck (30)
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1

Highest level of contamination, destroys all microbial life?

Sterilization

2

Less lethal than sterilization, does not include the destruction of resistant bacterial spores

disinfection

3

Disinfection is achieved using what two means?

Chemical, Heat

4

Glutaraldehyde, a high level disinfectant needs to be what % agent to be FDA registered?

2 - 3.2

5

Chlorine dioxide can disinfect in 3 minutes and sterilize in how many hrs?

6

6

Chlorine dioxide solution has what shelf life?

24hrs

7

Iodophors are classified how?

Intermediate level disinfectants

8

Iodophor biocidal activity is accomplished in what exposure time?

10-25 minutes

9

Flush HVE how often?

Weekly

10

Non-critical category items require at least what level disinfection?

Intermediate

11

Sterilization takes place in what room?

CSR (central sterilization room)

12

What process is safer and more effective than manual scrubbing?

Ultrasonic

13

Bursting bubbles in ultrasonic cleaning?

Cavitation effect

14

Limit ultrasonic cleaning time to how many minutes?

5

15

Triple-sink modules are used for?

Manual scrubbing

16

Heat sealed overwrapping will extend a 30 day shelf life up to?

180 days

17

What is the most dependable and economical method of sterilization?

Autoclave (steam under pressure)

18

What are the two most common types of steam sterilizers used by the USN?

Downward displacement (gravity) Pre-vacuum

high temp sterilizer (most economical)

19

Temp all known organisms are killed

250F

20

Bowie-dick test (checks for air removal) was developed for what type of sterilizer?

Pre-vacuum

21

Complete Bowie-dick test how often?

Daily

22

Clean the interior of steam sterilizer how often?

Daily

23

Least expensive form of heat sterilization?

Dry heat

24

Typical dry heat cycle?

90min
320 - 345F
(375 is max temp)

25

Chemical vapor sterilization cycle?

20-40min
270 F
20 psi

26

ETO gas can sterilize in 4-12 hrs at only 120F but needs how much aeration time?

16 hrs

27

How many chemicals can render an item sterile?

1
(glutaraldehyde)
MUST SOAK FOR 10 HRS

28

Effective/preferred methods of sterilization?

Steam autoclave
Dry heat oven
Chemical vapors
Ethylene oxide

29

Sterilization monitors?

Physical
Chemical
Biological

30

Chemical dyes that change color when exposed to steam, dry heat, or chemical vapor for specified periods of time?

Internal indicators