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34 Cards in this Set
- Front
- Back
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The pounds of pressure necessary in a steam sterilizer set at 250 degrees F is
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15 to 17 pounds pressure
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When steam enters the steam sterilizer under pressure, it forces the heavier air ahead of it and forward until it is discharged at the front of the sterilizer. This is called?
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gravity displacement
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The most dependable control measure used to assure that sterile conditions have been achieved is
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biologic control test
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A wrapped tray of instruments is sterilized in a gravity displacement sterilizer at 250 degrees F for
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30 minutes
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The minimum exposure time for unwrapped instruments in a flash sterilizer that is set at 270 degrees F (132degreesC) is
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3 minutes
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When steam is used to sterilize a rubber tubing or catheter
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a residual of distilled water should be left inside the lumen
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In order to be effectively sterilized, a linen pack must not weigh more than
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12 pounds
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The washer-sterilizer utilizes
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steam under pressure
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The process called cavitation occurs in the
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ultrasonic cleaner
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All of the following statements regarding instrument sets are true (instruments must be placed in perforated trays, heavy instruments are placed on the bottom, all detachable parts must be disassembled) EXCEPT:
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All instruments must be closed
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All of the following statements regarding steam sterilizatio are true (flat packages are placed on the shelf on edge, small packages placed one on top of the other are criss crossed, basins are placed on their sides) EXCEPT:
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Solutions may be autoclaved along with oher items as long as they are on a shelf alone
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Wrapped basin sets may be sterilized by steam under pressure at 250 degreesF for a minimum of
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20 minutes
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Basins must be separated by a porous material if they are nested
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True
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Why would gas sterilization be chosen over steam sterilization
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it is less damaging to items
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The chemical agent used in gas sterilization is
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ethylene oxide
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Positive assurance that sterilization conditions have been achieved can be obtained only through
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biologic indicators
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The lumen of a tubing undergoing ethylene oxide (EO) sterilization is
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dried thoroughly
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Why is ethylene oxide diluted with an inert gas such as chlorofluorocarbon
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it provides flame retardation
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Cidex is a
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liquid chemical sterilant
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The usual temperature in a gas sterilizer is
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85 to 145 degrees F
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Which of the following is essential when using activatedglutaraldehyde for sterilization
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items must be rinsed thoroughly in sterile water before use
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An example of an activated glutaraldehyde is
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Cidex
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In which procedure would the use of a high level disinfectant be acceptable instrument preparation?
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Cystoscopy
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In a high-speed flash sterilizer, unwrapped instruments are exposed for a minimum of
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3 minutes
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In order to kill spores, an item must be immersed in a 2% aqueous solution of glutaraldehyde for
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10 hours
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When placing tubing in an activated glutaraldehyde solution, one should
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be certain that the interior of the tubing is completely filled
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What is the role of moisture in EO sterilization
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dried spores are resistant to the gas, so they must bey hydrated
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Slow exhaust in a gravity displacement steam sterilizer is used for
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solutions
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Which item requires dry heat sterilization
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petroleum-impregnated gauze
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What is the function of an aerator in EO sterilization
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it is a separate unit used to decrease the aeration time
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Ethyleve oxide destroys cells by
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interfering with the normal metabolism of the protein and reproductive processes
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Activated glutaraldehyde is used to disinfect endoscopes for
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20 minutes
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When using a high-level disinfectant, always
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rinse items with sterile distilled water before using
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The chemical sterilant used in the STERIS method of sterilizing is
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peracetic acid
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