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NAVEDTRA 14295B HOSPITAL CORPSMAN > CH 10 DISINFECTION > Flashcards

CH 10 DISINFECTION Flashcards

1
Q

Highest level of contamination, destroys all microbial life?

A

Sterilization

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2
Q

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

A

disinfection

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3
Q

Disinfection is achieved using what two means?

A

Chemical, Heat

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4
Q

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

A

2 - 3.2

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5
Q

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

A

6

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6
Q

Chlorine dioxide solution has what shelf life?

A

24hrs

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7
Q

Iodophors are classified how?

A

Intermediate level disinfectants

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8
Q

Iodophor biocidal activity is accomplished in what exposure time?

A

10-25 minutes

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9
Q

Flush HVE how often?

A

Weekly

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10
Q

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

A

Intermediate

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11
Q

Sterilization takes place in what room?

A

CSR (central sterilization room)

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12
Q

What process is safer and more effective than manual scrubbing?

A

Ultrasonic

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13
Q

Bursting bubbles in ultrasonic cleaning?

A

Cavitation effect

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14
Q

Limit ultrasonic cleaning time to how many minutes?

A

5

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15
Q

Triple-sink modules are used for?

A

Manual scrubbing

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16
Q

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

A

180 days

17
Q

What is the most dependable and economical method of sterilization?

A

Autoclave (steam under pressure)

18
Q

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

A

Downward displacement (gravity) Pre-vacuum

high temp sterilizer (most economical)

19
Q

Temp all known organisms are killed

A

250F

20
Q

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

A

Pre-vacuum

21
Q

Complete Bowie-dick test how often?

A

Daily

22
Q

Clean the interior of steam sterilizer how often?

A

Daily

23
Q

Least expensive form of heat sterilization?

A

Dry heat

24
Q

Typical dry heat cycle?

A

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

25
Q

Chemical vapor sterilization cycle?

A

20-40min
270 F
20 psi

26
Q

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

A

16 hrs

27
Q

How many chemicals can render an item sterile?

A

1
(glutaraldehyde)
MUST SOAK FOR 10 HRS

28
Q

Effective/preferred methods of sterilization?

A

Steam autoclave
Dry heat oven
Chemical vapors
Ethylene oxide

29
Q

Sterilization monitors?

A

Physical
Chemical
Biological

30
Q

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

A

Internal indicators

NAVEDTRA 14295B HOSPITAL CORPSMAN (17 decks)

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