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CST Exam - Sterilization & Disinfection (2024) Questions & Answers!!
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CST Exam - Sterilization & Disinfection (2024) Questions & Answers!!
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Name: Score:72 Multiple choice questions
Term 1 of 72
Which of the following statements regarding the sterilization of basin sets is TRUE?
c) basins should be placed in a single layer without any separation
a) Basins must be separated by a porous material if they are nested
d) basins must be filled with water before sterilization
b) basins can be stacked directly on top of each other
Term 2 of 72
What is the minimum number of minutes to sterilize unwrapped metal instruments with lumens in
the gravity displacement sterilizer at 270 degrees F?
15 minutes
24 hours
3 minutes
10 minutes
Term 3 of 72
The amount of pressure necessary in a steam sterilizer set at 250F is:
a) 10-30 lb
a) 14-19 lb
a) 15-17 lb
a) sterilant
,Definition 4 of 72
a) 12 lb
For ETO sterilization, how long must instruments remain in the aerator being operated at
140 degrees F?
To kill spores, an item must be immersed in a 2% aqueous solution of glutaraldehyde for
How many hours must the steam sterilization biological indicator indicate?
To be sterilized effectively, a linen pack must not weigh more than
Term 5 of 72
Why would gas sterilization be chosen over steam sterilization?
c) it is more effective for all types of materials
b) it is less damaging to items
d) it requires lower temperatures than steam sterilization
a) it is faster than steam sterilization
Term 6 of 72
Gluteraldehyde is a high-level disinfectant that is, a sporicidal, a bacteriocidal, and virocidal at a
2% concentration for -----, it is also a tuberculocidal.
b) 48 hours
b) 3 minutes
a) 5 minutes
c) 20 minutes
, Term 7 of 72
All of the following statements regarding steam sterilization are true EXCEPT:
d) solutions may be autoclaved along with other items as long as they are on a shelf alone
c) steam sterilization requires a vacuum to be effective
a) steam sterilization is effective for all types of materials
b) items must be wrapped in plastic for steam sterilization
Term 8 of 72
How many minutes are unwrapped instruments with no lumens sterilized at 270 degrees F?
10 minutes
3 minutes
15 minutes
12 minutes
Term 9 of 72
When steam is used to sterilize a rubber tubing or catheter
d) a residual of distilled water should be left inside the lumen
a) the tubing should be completely dry before sterilization
c) steam should not come into contact with the tubing
b) the rubber tubing must be submerged in boiling water
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