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42 Cards in this Set
- Front
- Back
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Three factors in the control disease is |
1) eliminate the source of the disease 2) preventing the transmission of disease 3)Providing a method for the host to resist the disease |
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What is an example of eliminating the source of the disease? |
disinfecting and sterilizing |
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What is an example of preventing the transmission of disease? |
prevention aerosol of agents respiratory discharge |
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What is an example of Providing a method for the host to resist the disease? |
vaccination |
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What are two physical methods of microbial control |
Washing and drying removes alot of microbial load change out of and washing dirty cloths immediately |
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What should be used for incineration? |
soiled disposable items such as laundry mops basins trays and food bowels |
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How does Incineration work? |
with moist heat sterilization |
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What is the process of incinerating |
water is heated to 60c most effective if use detergent and agitation
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Boiling water is not good for killing? |
spore forming bacteria and heat resistant viruses
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What should be added to boiling water to help aid the process? |
detergent |
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What temp must be reached when boiling for it to be effective? |
100c |
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How long should items be boiled for them sterilized? |
Must boil for 30 minutes |
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In Chemical control it is important to follow... |
instructions for the use of the various agents |
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In chemical control; words ending in -cidal indicate? |
death of the organism |
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In chemical control; words ending in -static indicate? |
indicate inhibition of growth of organisms |
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What is the relationship between an antiseptic and a disinfectant? |
antiseptics may be a dilute form of a disinfectant |
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What is used in cold sterilization? |
objects are soaked in disinfectant |
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Concentrations above 50% in the use of alcohols are considered .. |
bacteriacidal |
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Why should alcohols not be used in cold trays? |
Alcohols evaporate to quickly |
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Where should alcohols not be used? |
on traumatized skin |
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What is an example of an Aldehyde? |
Formaldehyde |
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What is formaldehyde (aldehyde) used for? |
tissue preservation |
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What environment should a aldehyde be used in and why |
One with good ventilation because it is a carcinogen |
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What is an example of a Glutaraldehyde? |
Cidex |
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What are glutaraldehydes used for |
Kills most organisms |
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How long should objects be left to soak in cidex for it to kill most organisms? |
kills most organisms in 10 minutes |
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How long should objects be left to soak in cidex for it to be considered sporacidal |
It is sporacidal if objects are left to soak for several hours |
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What are some examples of oxidizing agents? |
chlorine, iodine and hydrogen peroxide |
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How do oxidizing agents work? |
By disrupting the cell process |
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What dilution of household bleach is effective against many bacteria and viruses ? |
1:5 dilution bleach:water |
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How does iodine work? |
Iodine reacts with cells to inhibit enzyme activity |
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At what concentration does iodine begin to burn living tissue? |
3.5% or higher |
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What chemicals should never be combined? and why? |
ammonia and chlorine it forms toxic chlorine gas |
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What are surfactants? |
Detergents |
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Why are surfactants used? |
surfactants are used to lower surface tension of a liquid and allow dislike substances (water and oil) to mix more easily |
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What are the three groups of surfactants? |
1. Anionic 2. nonionic 3. cationic |
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What are some examples of anionic's? |
soap, mostly cleaning agents |
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What are cationic's good for |
bacterial compounds |
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What are some phenolic derivatives? |
Lysol, pine-sol |
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When are phenolic's not as effective ? |
by excessive organic material |
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What is a heavy metal that was once used, but was removed from the market? |
Mercury |
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What Heavy metal is available as an antiseptic? |
Zinc compounds |
