Chapter 15 (Notes)

Question 1

The basic EtO sterilization cycle consists of five stage:

Answer 1

1. ) Preconditioning
2. ) Humidification
3. ) Gas
4. ) Introduction
5. ) Exposure,
6. ) Evacuation
7. ) Air washes

Question 2

The basic EtO sterilization cycle takes approximately

Answer 2

2.5 hours

Question 3

Minimum general recommendations for aeration time

Answer 3

8 hours

Question 4

Minimum general recommendations for aeration temperature (8hrs)

Answer 4

140F (60C)

Question 5

Hydrogen peroxide gas plasma using a hydrogen peroxide solution ranging from

Answer 5

59% to 95%

Question 6

The phases of hydrogen peroxide gas plasma include:

Answer 6

1. ) Vacuum - The load is heated while the vacuum system removes any remaining water as it evaporates. Air is removed from the chamber and packages until the pressure is reduced to below atmospheric pressure.
2. ) Injection - Once the correct pressure has reached, a premeasured amount of concentrated hydrogen peroxide is pumped from a cassette into the vaporizer bowl and then vaporized into the chamber.
3. ) Diffusion - The diffusion stage drives hydrogen peroxide vapor into a small cervices and lumens of devices. The chamber returns to atmospheric pressure to accomplish this.
4. ) Plasma - A vacuum decreases the pressure, and radio frequency (RF) energy is radiated within the chamber from an electrode screen. The RF energy ionizes the hydrogen peroxide, creating hydrogen peroxide gas plasma. The injection and plasma phases are repeated a second time.
5. ) Vent - At the end of the second plasma sequence, the RF is turned off. Air is then vented into the chamber through bacterial high-efficiency particular air (HEPA) filters, returning it to atmospheric pressure. The process byproducts are only water vapor and oxygen. Aeration is not required, and instruments can be used immediately following the 24- to 75-minute sterilization cycle

Question 7

The hydrogen peroxide cassette is automatically ejected into a collection box for safe disposal after

Answer 7

5 cycles

Question 8

Hydrogen peroxide gas plasma is not compatible with:

Answer 8

1. ) Liquids and powders
2. ) Any material that absorbs liquids.
3. ) Items that contain cellulose, such as cotton, paper or cardboard, linens, huck towels,gauze sponges or any item containing wood pulp

Question 9

AORN guidlines recommend that biological monitoring should be performed at least

Answer 9

Daily (Preferably with each load)

Question 10

Vaporized hydrogen peroxide sterilization uses a

Answer 10

59% hydrogen peroxide solution

Question 11

Vaporized hydrogen peroxide is injected ______ times during each sterilization cycle

Answer 11

4

Question 12

Vaporized Hydrogen Peroxide Cycle Temperature:

Answer 12

Less than 122F (50C)

Question 13

Ozone sterilization cycle time is

Answer 13

4.5 hrs

Question 14

Ozone Sterilization cycle temperature:

Answer 14

87.4F to 97F (30.8 to 36C)

Question 15

Ozone Sterilization Relative Humidity

Answer 15

85% to 100%

Question 16

Who regulates Ozone as a toxic gas?

Answer 16

1. ) OSHA
2. ) FDA
3. ) NIOSH

Question 17

Ozone sterilization requires a well ventilated room with ________

Answer 17

10 air exchanges per hour

Question 18

_____ is the byproduct of Ozone sterilization

Answer 18

Oxygen

Question 19

The ________ method of low temperature sterilization uses gas cartridges for sterilant

Answer 19

Ethylene Oxide

Question 20

The probability of a viable microorganism being present on an item after sterilization is the _________

Answer 20

Sterility Assurance Level

Question 21

The bacterial spore used to test ethylene oxide sterilization cycles is ______

Answer 21

Bacillus Atrophaeus

Question 22

Cycle time for items sterilized using ozone sterilization is _____

Answer 22

4.5 hours

Question 23

An aeration time of ______ at 140F is recommended for items sterilized with ethylene oxide.

Answer 23

2.5 hours

Question 24

_________ is a bacterial spore used to test hydrogen peroxide sterilization cycles.

Answer 24

Geobacillus Stearothermophilus

Question 25

Exposure time for items sterilized using ethylene oxide sterilization is ______

Answer 25

8 hours

Question 26

_______ sets exposure standards for chemical sterilants

Answer 26

OSHA

Question 27

________ recommends that sterilants be rigorously tested before being marketed.

Answer 27

FDA

Question 28

_______ is a byproduct of Ozone sterilization

Answer 28

Oxygen

Question 29

The _______ method of low-temperature sterilization uses gas cartridges for a sterilant

Answer 29

Ethylene Oxide

Question 30

The probability of a viable microorganism being present on an item after sterilization is the

Answer 30

Sterility assurance level

Question 31

The bacterial spore used to test ethylene oxide sterilization cycles is

Answer 31

Bacillus atrophaeus

Question 32

Cycle time for items sterilized using ozone sterilization is

Answer 32

4.5 hrs

Question 33

An aeration time of ____ at 140F is recommended for items sterilized with ethylene

Answer 33

2.5 hrs

Question 34

________ is a bacterial spore used to test hydrogen peroxide sterilization cycles

Answer 34

Geo stearlthermophilos

Question 35

Exposure time for items sterilized using ethylene oxide sterilization is ____

Answer 35

Eight hours

Question 36

____________ sets exposure standards for chemical sterilants

Answer 36

OSHA

Question 37

______ recommends that sterilant be rigorously tested before being marked

Answer 37

U.S. Food and Drug Administration

Question 38

_______ is a method of stock rotation which ensures that older items are used first

Answer 38

First in, first out

Question 39

Air flow in the sterile storage area should be

Answer 39

Positive

Question 40

Packaging that prevents microorganisms from entering the packages and allows aseptic opening is called

Answer 40

Barrier packaging

Question 41

Humidity in the sterile storage area should be ___

Answer 41

Less than 70%

Question 42

Temperature in the sterile storage area should be ____

Answer 42

75 or lower

Question 43

The _____ shelf of storage carts should solid

Answer 43

Bottom

Question 44

Stacking rigid containers too high can cause ______ damage

Answer 44

Gasket

Question 45

Items should be stored at least _______ inches below sprinkler heads

Answer 45

18