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37 Cards in this Set
- Front
- Back
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Disinfection is used on |
Inanimate objects |
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Aseptic |
Free of pathogenic contamination |
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Antisepsis |
Reduction of pathogens on living tissue |
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Germicide |
Chemical that kills pathogens microbes |
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Intermediate level germicide |
Fungal spores, protozoan cysts, viruses and bacteria |
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Low level germicide |
Vegitative bacteria, fungi, protozoa, most bacteria |
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Thermal death point |
Lowest temperature to kill ALL cells in a broth in ten minutes |
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Thermal death time |
Time to sterilize a volume of liquid at a set temperature |
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Decimal reduction time (D) |
Time to kill 90% |
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Boiling kills... |
Bacteria, fungi, protozoan trophozoites and most viruses |
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Autoclaving |
Kills all microbes, 121°C at 15 pounds per square inch for 15 minutes |
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Batch method of pasteurization |
63° for 30 minutes |
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Flash method |
72° for 15 seconds |
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Ultra high temperature pasteurization |
135° for 1 second |
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Ultra high temperature sterilization |
140° for 1-3 seconds |
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Osmotic pressure |
Inhibits growth by using a high concentration of salt or sugar, fungi have a greater ability to survive |
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Ionizing radiation |
Less than 1 nano meter |
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Electron beams |
Effective to kill but do not penetrate well |
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Gamma rays |
Penetrate well but take hours to kill |
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X rays |
Take a really long time |
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Non ionizing radiation |
Greater than one nano meter, excites electrons causing new covalent bonds |
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UV rays cause |
Pyramidine dimers in DNA |
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Chemical methods are not as effective as physical for.... |
Fungal spores, protozoan cysts and bacterial endospores |
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Phenol and phenolics |
Low to intermediate level, denatured proteins and disrupt the cell membrane |
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Alchols |
Intermediate (bacteriosidal, fungicidal, viruscidal) , denature proteins and disrupt the cell membrane |
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Hallogens |
Intermediate, damage enzymes by denaturing |
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Oxidizing agents |
High level, kill by oxidizing |
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Sufactants |
Surface active chemicals that reduce surface tension of solvents |
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Detergents |
Positively charged organic surfactants that disrupt the cell membrane |
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Quaternary ammonium compounds (quarts) |
Low level, disrupt the cell membrane |
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Heavy metals |
Low levels, denature proteins |
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Aldehydes |
Contain terminal CHO groups |
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Glutaraldehyde |
Disinfects and sterilization 2% solution |
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Formalin |
Used inbalming and disinfection of rooms and insterments |
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Gases agents |
High level |
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Enzymes |
High level against its substrate |
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Prionzyme |
Can remove prions on medical instruments |
