CST_Exam_Sterilization_and_Disinfection
_Study_Guide
1. The amount of pressure necessary in a steam sterilizer a) 15-17 lb
set at 250F is:
2. Positive assurance that sterilization conditions have a) biological control test
been achieved can only be obtained through
3. A wrapped tray of instruments is sterilized in a gravity c) 30 minutes
displacement sterilizer at 250 F for
4. The minimum exposure time for unwrapped instru- b) 3 minutes
ments in a flash sterilizer that is set at 270F is
5. When steam is used to sterilize a rubber tubing or d) a residual of distilled
catheter water should be left inside
the lumen
6. To be sterilized effectively, a linen pack must not weigh a) 12 lb
more than
7. Gravity displacement utilizes ---- to destroy microor- d) steam
ganisms
8. The process called cavitation occurs in the b) ultrasonic cleaner
9. All of the following statements regarding instrument c) all instruments must be
sets are true EXCEPT: closed
10. All of the following statements regarding steam steril- d) solutions may be au-
ization are true EXCEPT: toclaved along with other
items as long as they are
on a shelf alone
11. Wrapped basin sets may be sterilized by steam under d) 20 minutes
pressure at 250F for a minimum of
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, 12. Which of the following statements regarding the ster- a) Basins must be separat-
ilization of basin sets is TRUE? ed by a porous material if
they are nested
13. Why would gas sterilization be chosen over steam ster- b) it is less damaging to
ilization? items
14. The chemical agent used in gas sterilization is: d) ethylene oxide
15. What chemical system uses peracetic acid as the ster- b) STERIS
ilant?
16. The lumen of a tubing undergoing ethylene oxide (EO) b) dried thoroughly
sterilization is
17. The commercial name for glutaraldehyde is d) CIdex
18. A 30 minute, single use, sterilization system useful for a) STERIS
endoscopes is
19. Which of the following is essential when using the a) Items must be rinsed
shelf of the autoclave in a combined load-activated thoroughly in sterile water
glutaraldehyde for sterilization? before use
20. What is shelf life of Cidex? a) 14 days
21. In which procedure would the use of high-level disin- c) Cystoscopy
fectant be acceptable instrument preparation?
22. In a high-speed flash sterilizer, unwrapped instru- b) 3 minutes
ments are exposed for a minimum of:
23. To kill spores, an item must be immersed in a 2% c) 10 hours
aqueous solution of glutaraldehyde for
2/7
_Study_Guide
1. The amount of pressure necessary in a steam sterilizer a) 15-17 lb
set at 250F is:
2. Positive assurance that sterilization conditions have a) biological control test
been achieved can only be obtained through
3. A wrapped tray of instruments is sterilized in a gravity c) 30 minutes
displacement sterilizer at 250 F for
4. The minimum exposure time for unwrapped instru- b) 3 minutes
ments in a flash sterilizer that is set at 270F is
5. When steam is used to sterilize a rubber tubing or d) a residual of distilled
catheter water should be left inside
the lumen
6. To be sterilized effectively, a linen pack must not weigh a) 12 lb
more than
7. Gravity displacement utilizes ---- to destroy microor- d) steam
ganisms
8. The process called cavitation occurs in the b) ultrasonic cleaner
9. All of the following statements regarding instrument c) all instruments must be
sets are true EXCEPT: closed
10. All of the following statements regarding steam steril- d) solutions may be au-
ization are true EXCEPT: toclaved along with other
items as long as they are
on a shelf alone
11. Wrapped basin sets may be sterilized by steam under d) 20 minutes
pressure at 250F for a minimum of
1/7
, 12. Which of the following statements regarding the ster- a) Basins must be separat-
ilization of basin sets is TRUE? ed by a porous material if
they are nested
13. Why would gas sterilization be chosen over steam ster- b) it is less damaging to
ilization? items
14. The chemical agent used in gas sterilization is: d) ethylene oxide
15. What chemical system uses peracetic acid as the ster- b) STERIS
ilant?
16. The lumen of a tubing undergoing ethylene oxide (EO) b) dried thoroughly
sterilization is
17. The commercial name for glutaraldehyde is d) CIdex
18. A 30 minute, single use, sterilization system useful for a) STERIS
endoscopes is
19. Which of the following is essential when using the a) Items must be rinsed
shelf of the autoclave in a combined load-activated thoroughly in sterile water
glutaraldehyde for sterilization? before use
20. What is shelf life of Cidex? a) 14 days
21. In which procedure would the use of high-level disin- c) Cystoscopy
fectant be acceptable instrument preparation?
22. In a high-speed flash sterilizer, unwrapped instru- b) 3 minutes
ments are exposed for a minimum of:
23. To kill spores, an item must be immersed in a 2% c) 10 hours
aqueous solution of glutaraldehyde for
2/7
