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WorksheetsInfection Control
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
The proper time and temperature for autoclaving is:
a)
350 degree for 1 hour (177 degree C)
b)
250 degree F for 15-20min (121 degree C)
c)
450 degree F for 5min (232 degree C)
d)
89 degree F for 30min (31 degree C)
2.
The proper time and temperature for dry heat sterilization is:
a)
320 degree F for 2 hours (160 degree C)
b)
250 degree F for 20-30min (121 degree C)
c)
450 degree F for 5min (232 degree C)
d)
89 degree F for 30min (31 degree C)
3.
Which type of pathogen provides the ultimate test for efficacy of sterilization?
a)
Bacteria
b)
Spore-forming
c)
Viruses
d)
Fungi
4.
The killing or removal of all microorganisms, including bacterial spores, is called:
a)
Disinfection
b)
Cleaning
c)
Sterilization
d)
Wiping
5.
The greatest occupational health care worker risk for bloodborne infection is:
a)
Hepatitis C virus
b)
HIV
c)
Hepatitis B virus
d)
Tuberculosis
6.
It is recommended that face masks be changed:
a)
Between patients
b)
Daily
c)
2x per day
d)
Twice in the morning and twice in the afternoon
7.
Because ______ are the hardiest microbes, their destruction is required before the defined parameters/levels of sterilization have been met.
a)
Hepatitis B virus
b)
Bacterial endospores
c)
Mycobacteria
d)
Vegetative bacteria
8.
One major difference between current “standard” infection control precautions and previous “Universal precautions” recommendations, is that the latter:
a)
Primarily targets protection against respiratory infections
b)
Provided specific precaution to protect against all microbial pathogens
c)
Was designed to primarily protect against bloodborne pathogens
d)
Addressed infection control precautions to eliminate opportunistic pathogen risk
9.
The oral health care team uses a steam autoclave for sterilization. If you are responsible for purchasing spore strips to test sterility, which of the following would you order?
a)
Clostridium botulinum
b)
Bacillus stearothermophilus
c)
Clostridium tetani
d)
Bacillus anthracis
10.
Which method of sterilization is most appropriate for heat-sensitive items?
a)
Dry heat
b)
Ethylene oxide
c)
Chemical vapor
d)
Complex phenol
11.
The hygienist has just removed the instrument cassette from the autoclave. The indicator tape on the wrapping has turned brown. One can be assured of which of the following?
a)
The instruments have been sterilized
b)
The instruments have been heat processed
c)
All microorganisms except spores, have been killed
d)
All microorganisms, except TB, have been killed
12.
What is one disadvantage of chemical vapor pressure sterilization?
a)
Materials must be aerated
b)
Rusting can occur
c)
Adequate ventilation is necessary
d)
Instruments are wet at the end of the cycle
13.
Which of the following behaviors associated with hand washing is recommended?
a)
Use cloth towels for drying
b)
Use a brush on hands two times a day
c)
Perform a short scrub at the beginning of each day
d)
Perform a surgical scrub at the beginning of each day
14.
For disinfection of an operatory, a hygienist should select an agent that has which of the following?
a)
Fungicidal
b)
Bactericidal
c)
Tuberculocidal
15.
Cationic surfactants can inactivate microbial cells by acting on the:
a)
DNA
b)
RNA
c)
Mitochondria
d)
Cell membrane
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