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OSA > Sterilization > Flashcards

Sterilization Flashcards

1
Q

How much time is required, for a sterilization usually referred to as “flash sterilization”, 28 lbs of pressure at 270•F (132•C)?

A

3 minutes, 10 minutes for Tubing

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2
Q

Effective sterilization under 15lbs of pressure at 250•F (121•C) requires how much time?

A

15 to 30 minutes

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3
Q

What term is used for the elimination of all microorganisms and spores from instruments?

A

Sterilization

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4
Q

In order for surgical instruments to be effectively disinfected they must?

A

Be throughly cleaned and completely dried.

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5
Q

What term is used for the reduction of microorganism on objects and surfaces?

A

Disinfection

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6
Q

What material is most widely used in microsurgical and is extremely resistant to staining and corrosion?

A

Stainless Steel

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7
Q

What material is used to toughen steel, is not only strong, but durable, with a metallic element Ti?

A

Titanium

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8
Q

What metals should not be ultrasonically cleaned together?

A

Stainless Steel and Titanium

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9
Q

What cleaning method is gentle and utilizes ultrasonic wave movements to dislodge any remaining debris?

A

Ultrasonic Cleaning

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10
Q

What should be done to a diamond blade after use?

A

Flushed immediately with sterile distilled water squirted with force through a clean syringe.

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11
Q

What is done to complete the process before returning instruments to storage?

A

Final rinsing with demineralized distilled water and drying completely

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12
Q

What should be done to the instruments after ultrasonic cleaning?

A

Bathed in an instrument bath or milk

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13
Q

Approximately how long is the ultrasonic cleaning cycle?

A

5 minutes

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14
Q

What material should not be ultrasonic cleaned because it can loosen the material?

A

Chrome Plated

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15
Q

What is the most technologically advanced procedure that destroys a wide range of microorganisms?

A

Plasma

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16
Q

What is used to achieve fast low temperature, low moisture sterilization?

A

Low temperature hydrogen peroxide gas Plasma

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17
Q

What alternative method of sterilization for instruments and new materials that cannot be autoclaved, with a minimum time of 20 minutes?

A

Chemical or Cold sterilization

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18
Q

What is the most common form of gas sterilization, and the least taxing?

A

Ethylene Oxide (EO2)

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19
Q

What type of sterilization has an exposure time ranging 1 1/2 to 2 hours with a temperature range of 50• to 60• and humidity range of 40% to 80%?

A

Gaseous Chemical Sterilization

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20
Q

What sterilization can effectively destroy bacteria, fungal spores, tubercle bacilli, viruses and all forms of microbial life?

A

Liquid Chemical Sterilization

21
Q

What is the most common and effective liquid chemosterilizer?

A

Activated Glutaraldehyde 2%

22
Q

What plastic is the only one acceptable for steam sterilization?

A

Polypropylene Film (1-3 mm thickness)

23
Q

What packaging is not acceptable for gas sterilization?

A

Nylon

24
Q

Using chemical solutions to reduce the source of infection is a goal of what?

A

Disinfection

25
Q

What is the most frequently used form of sterilizing instruments that damages steel using moist heat under pressure?

A

Steam Sterilization (Autoclave)

26
Q

What gram negative rod microorganism is the most destructive to the eye?

A

Pseudomonas Aeruginosa

27
Q

What microorganisms causes conjunctivitis, corneal ulcers or endophthalmitis?

A

Streptococcus Pneumoniae

28
Q

What microorganisms is round shaped and gram positive living on the skin?

A

Streptococci

29
Q

What are the smallest infectious organisms that can be transmitted through oral, respiratory, intestinal and urinary tracts?

A

Viruses

30
Q

What must be done to tubing and cannulas that have been utilized to deliver or extract fluids, viscous substances, and or medications?

A

Forcefully flushed clear

31
Q

What is not advised to use to clean Titanium?

A

Hydrogen Peroxide

32
Q

What does METICO suggest to use to complete the cleaning of the diamond blade?

A

Use a diamond knife cleaning block which should be moistened with 3 drops of water

33
Q

What type of gem blades can be sterilized with gas and or steam?

A

Diamond and Ruby Blades

34
Q

What gem is not recommended to be ultrasound cleaned?

A

Sapphire Blade

35
Q

How much time is needed to clean instruments with Gaseous Chemical Sterilization?

A

1 1/2- 2 Hours

36
Q

What range of temperature is needed for Gaseous Chemical Sterilization?

A

50-60 Degrees

37
Q

How much humidity is used for Gaseous Chemical Sterilization?

A

40%-80% Humidity

38
Q

How much pressure is needed for flash sterilization?

A

28 lbs

39
Q

What temperature is used for flash sterilization?

A

270• F (132•C)

40
Q

What is Universal Precautions?

A

Guidelines designed to control the transmission of any infection

41
Q

What is the goal of Disinfection?

A

Reduce the source of infection

42
Q

How is sterilization achieved?

A

By the complete destruction of all microorganisms

43
Q

Steam sterilization requires how much pressure with a 15-30 minute exposure time?

A

15 lbs of pressure

44
Q

Steam sterilization at what temperature requires 15-30 minutes of exposure time?

A

250•F (132•C)

45
Q

When is flash sterilization used?

A

When there is not enough time to sterilize in another method

46
Q

What is the minimum time required for Chemical or Cold sterilization?

A

20 minutes

47
Q

What is a dry chemical sterilization method?

A

Gas

48
Q

What sterilization is the least damaging to fragile instruments?

A

Ethylene Oxide Gas sterilization

49
Q

How long do instruments need to be subjected to a liquid sterilization?

A

10 hours

OSA (12 decks)

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