CH 10 DISINFECTION

Question 1

Highest level of contamination, destroys all microbial life?

Answer 1

Sterilization

Question 2

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

Answer 2

disinfection

Question 3

Disinfection is achieved using what two means?

Answer 3

Chemical, Heat

Question 4

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

Answer 4

2 - 3.2

Question 5

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

Answer 5

6

Question 6

Chlorine dioxide solution has what shelf life?

Answer 6

24hrs

Question 7

Iodophors are classified how?

Answer 7

Intermediate level disinfectants

Question 8

Iodophor biocidal activity is accomplished in what exposure time?

Answer 8

10-25 minutes

Question 9

Flush HVE how often?

Answer 9

Weekly

Question 10

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

Answer 10

Intermediate

Question 11

Sterilization takes place in what room?

Answer 11

CSR (central sterilization room)

Question 12

What process is safer and more effective than manual scrubbing?

Answer 12

Ultrasonic

Question 13

Bursting bubbles in ultrasonic cleaning?

Answer 13

Cavitation effect

Question 14

Limit ultrasonic cleaning time to how many minutes?

Answer 14

5

Question 15

Triple-sink modules are used for?

Answer 15

Manual scrubbing

Question 16

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

Answer 16

180 days

Question 17

What is the most dependable and economical method of sterilization?

Answer 17

Autoclave (steam under pressure)

Question 18

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

Answer 18

Downward displacement (gravity) Pre-vacuum

high temp sterilizer (most economical)

Question 19

Temp all known organisms are killed

Answer 19

250F

Question 20

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

Answer 20

Pre-vacuum

Question 21

Complete Bowie-dick test how often?

Answer 21

Daily

Question 22

Clean the interior of steam sterilizer how often?

Answer 22

Daily

Question 23

Least expensive form of heat sterilization?

Answer 23

Dry heat

Question 24

Typical dry heat cycle?

Answer 24

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

Question 25

Chemical vapor sterilization cycle?

Answer 25

20-40min 270 F 20 psi

Question 26

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

Answer 26

16 hrs

Question 27

How many chemicals can render an item sterile?

Answer 27

1 (glutaraldehyde) MUST SOAK FOR 10 HRS

Question 28

Effective/preferred methods of sterilization?

Answer 28

Steam autoclave Dry heat oven Chemical vapors Ethylene oxide

Question 29

Sterilization monitors?

Answer 29

Physical Chemical Biological

Question 30

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

Answer 30

Internal indicators