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DEA 201

QUiZ 2 Sterilization

Define Disinfection destruction of most pathogens (not spores)
Define Sterilization destruction or removal of ALL forms of life.
#1 requirement for sterilization The destruction of Bacterial and Fungal Spores
Sterilization Methods Prolonged dry heat, Unsaturated chemical vapor, Steam under Pressure, Ethylene Oxide, Chemical sterilants
Prolonged Heat Time and TEMP 340 degrees, initial heat time is 20 minutes and sterilization (glass is 1 hour (glass and metal instruments)
Advantages/ disadvantages of prolonged heat, Advantage: no dulling, no corrosion/rust, easy Disadvantage: Long time, Can cause discoloration/ warping, Melts Plastic,Without good organization poor penetration of instruments
unsaturated Chemical Vapor Uses a combination of heat, water, pressurized chemicals
Chemicals used for chemical vapor Alcohols, Formaldehyde, Ketone, Acetone, Water (must be purchased VIA manufacturer) sanitized in a chamber
Unsaturated Chemical Vapor 270 degrees, 20 to 30 minutes (high/slow handpieces, contra angles)
Advantages/ Disadvantages Chemical Vapor Advantages: short cycle time, no corrosion, reliable, won't dull cutting edges Disadvantages: oder (Ventilation) expensive solution, dry instuaments before sterilization
Steam Under pressure (autoclave/ FLASH STERILIZER) Time and temp 250 - 270 degrees, 15 to 20 minutes (3-10 statium) Pressure 15 - 20 LBS
Steam under pressure facts efficient & effective MOST COMMON STERILIZATION METHOOD (cotton, rubber, metal tools)
Steam Under pressure Advantages / disadvantages Advantages: short cycle time, sterilized hand pieces, Cheap (run off distilled water) Disadvantages: rust/ corrosion, Dull edges, must oil hand pieces before sterilizing, mets plastic,
Ethylene Oxide Time and Temp Chemical sterilant (uncommon 2 types Heater 120 degrees2 - 3 hours) and room temp at 12 hours
Ethylene Oxide Advantages / disadvantages Advantages Cheep, reliable, most materials can be sterilized (not metal or glass closed containers) Disadvantage: long processing time, toxicity of gas (ventilation) 24 hours for residue to dissipate
Monitoring of Sterilization (3 methods) Process Indicators, Biological Monitoring, Control Indictors
process Indicators heat sensitive Tape, USE IN CONJUNCTION with biological monitors because its only tells you the temp reached a certain point, not that its actually sanitized
Biological monitoring Most accurate 9sent away weekly to a lab DETERMINES IF SPORES HAVE SURVIVED
Control indicators In the package, same idea as tape
Created by: ashblake4
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