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22 Cards in this Set
- Front
- Back
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Ideal disinfectant (7)
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kills all pathogens
fast acting nontoxic residual action noncorrosive not easily inactivated low cost |
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antiseptic vs disinfectant
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antiseptic - living tissue
disinfectant - inanimate objects |
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advantages of alcohol
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bactericidal
noncorrosive |
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disadvantages of alcohol
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evaporates quickly
easily contaminated harsh on injured tissue coagulates cell proteins does not get spores, fungi |
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ideal use for alcohol
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last layer in sx scrub
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Aldehydes
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eg. Formalin
used little now vary caustic cold sterilization |
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Oxidizing agents mode of action
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react w/ protein molecules of cells causing O2 exchange which deactivates enzymes
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Oxidizing agents - examples
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iodine base
povidone iodine compounds BisGuandine compounds Chlorine H2O2 (hydrogen peroxide) |
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Iodine base agents
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sx prep of skin
somewhat irritating stains little risidual effect bactera, viruses, fungus, some spores |
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Povidone Iodine Components
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slower release of iodine
easily inactivated no residual effect stains bacteria, fungi, viruses, protozoa |
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BisGuanide Compounds
(Chlorhexidine - Nolvosan) |
alter cell wall permeability
good residual activity bacteria, viruses, fungi (ringworm) Epidene -reddish |
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Chlorine (bleach)
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widespread use
cheap easily inactivated caustic, irritating stains no residual effect clean area before use viruses, fungi, bacteria, algae (no spores) |
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Hydrogen Peroxide (H2O2)
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degrades into O2 and H2O
breaks down membranes not effective against nonenveloped viruses |
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Surfactants/Detergents
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Quaternary ammonium compounds
reduce surface tension easier to detach material emulsify lipids long contact time expensive |
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Phenolic Derivatives
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Bis-Phenol: hexachlorophene
very corrosive, irritating rarely used |
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Ethylene Oxide
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poisonous
used for autoclaving one-time objects longer sterilization time, but lower temp does not ruin delicate objects |
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Steps in cleaning cage
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remove organic matter
soak with detergent & rinse bleach + H2O 1:32, leave on 10-15 min & rinse roof, door, sides, floor |
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Anionic detergent
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has free negatively charged ions that precipitate when combined with calcium and magnesium in hard water
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Cationic detergent
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contains positively charged ions that remain suspended in solution
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Biocide
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kills living organisms
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Sanitize
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reduce number of microbes to safe level
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Detergent
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chemical that contains free ions and leaves film on surfaces
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