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Clinical Bacteriology Lec > Infection Control > Flashcards

Infection Control Flashcards

1
Q

render an area, device, item, or material safe to handle that is reasonably free from a risk of disease transmission

A

decontamination

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2
Q

a process of cleansing an object or a substance

A

decontamination

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3
Q

act or process, physical or chemical that destroys or eliminates all forms of life, especially microorganisms

A

sterilization

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4
Q

less lethal process than sterilization

A

disinfection

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5
Q

is absolute

A

sterilization

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6
Q

elmination of nearly all recognized pathogenic microorganisms but not necessarily all microbial forms

A

disinfection

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7
Q

most common physical method of sterilization

A

incineration

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8
Q

decontaminate potentially infectious materials before disposal or reuse

A

biosafety process

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9
Q

in incineration, materials are burned to ashes at a temperature of

A

870-980 degree C

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10
Q

15 psi, steam under pressure for heat stable object

A

moist heat

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11
Q

the fastest and simplest, also most effective

A

moist heat

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12
Q

biological indicator of moist heat

A

bacillus steatothermophilus

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13
Q

moist heast uses an equipment called __ which is like a large pressure cooker

A

autoclave

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14
Q

most common autoclave

A

gravity displacement type

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15
Q

moist heat for media, liquids, and instruments

A

121 C (250F) at 15 psi for 15 minutes

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16
Q

moist heat for infectious medical waste

A

132 C for 30-60 minutes

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17
Q

contains bacterial spores suspended in a growth medium, incubate at 35 C

A

sealed ampules

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18
Q

no color change of the medium (purple)

A

spores were killed

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19
Q

there is acid production that causes color change to the medium

A

Spores were not killed

20
Q

What should not be autoclaved!

A

corrosive materials
radioactive materials

21
Q

‘alternate heating, incubation and heating

A

Fractional sterilization

22
Q

Tyndallizarion

A

100° C, 30 minutes for 3 days

23
Q

inspissation

A

76-80°C, 2 hours for 3 days

24
Q

Temp for dry heat

A

100-180 C for 1.5 - 3 hours

25
Q

ovens for items such as glassware, oil and powders

A

Dry heat

26
Q

Biologic indicator for dry heat

A

Bacillus subtilis var nigar

27
Q

For heat sensitive items

A

Filtration

28
Q

Liquid filtration

A

• cellulose acetate or cellulose nitrate member with a vacuum

29
Q

Air filtration

A

HEPA Filters (high efficiency particulate air)

30
Q

HEPA can filer organisms in the air that is

A

> 0.3 mm

31
Q

-for disposables ruch as plastic syringes, calmeters, and gloves
-short wardiengin and high energy gamma rays (microwaves)

A

lonizing Radiation (Gramma Rays)

32
Q

most common chemical method of sterilization

A

Ethylene oxide

33
Q

Gaseous form ethylene oxide

A

For heat sensitive objects

34
Q

Ethylene oxide biological indicator

A

Bacillus subrilis var. globigii

35
Q

for HEPA filters in BSC’s

A

Formaldehyde vapor and vapor phase hydrogen peroxide

36
Q

Formaldehyde vapor and vapor phase hydrogen peroxide is also used for medical equipment such as ____ because it does not corrode lenses, metal, or rubber

A

Bronchoscopes

37
Q

• sporocidal in 3 to 10 hours
• cold sterilization

A

glutaraldehyde or Peracetic Acid

38
Q

Boiling kills vegetative bacteria for?

A

100°C, 15 minutes

39
Q

Temp for 30 minutes pasteurization

A

63°C

40
Q

Temp for is seconds pasteurization

A

72°C

41
Q

UV rays are __ wavelength and __ energy

A

long wavelength and low energy

42
Q
  • Chemical sterilants used to destrong all life
  • use for shorter periods
A

Biocides

43
Q

disingechants used on living tirsue (skin) are called

A

Antiseptics

44
Q

Aldehyde agents

A

8 % formaldehyde, 2% glutaraldehyde

45
Q

Halogens agents

A
  • Tincture of iodine (2% in 70% alcohol)
  • chlorine and chlorine compounds
46
Q

Denature proteins

A

Alcohols

47
Q

Inactivates proteins

A

Halogens

Clinical Bacteriology Lec (4 decks)

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