Surgical Asepsis Flashcards
Bacteriocidal
agent that kills bacteria
Bacteriostatic
inhibition of bacterial growth
Disinfectant
agent that kills microorganisms on inanimate objects
Disinfection
process of destroying pathogenic microorganisms, except spores
Ultrasonic cleaners clean the instruments through the process of what
cavitation: formation of tiny bubbles that expand and implode to create a vacuum which dislodges minute particles of soil form the instrument
Saturated Steam under pressure
the safest most common thermal means of sterilizing supplies
Steam sterilizer at 250*F is at a pressure of what
15 to 17 psi
Steam sterilizer at 275*F is at a pressure of what
27 psi
What are the two test done daily to ensure the removal of air form the pre-vacuum sterilizer?
Bowie-Dick and DART daily air removal test
Dry heat is used to sterilize what
anhydrous oils, petroleum products, and talc, which steam can not penetrate
What is the common method of sterilizing?
Cobalt 60
Ethylene oxide is used to sterilize what?
heat and moisture sensitive items (plastic, rubber)
items must be clean and dry to prevent what
the formation of ethylene glycol
Sterilization for ethylene oxide takes how long?
10 hours
Activated glutaraldehyde is also called
cidex
What is cidex used to sterilize
endoscopes and for plastic and rubber items
Sterrad uses what as a sterilizer?
hydrogen peroxide
Sterrad works at what temperature?
104*F
How long does it take the Sterrad to sterilize?
1 hour
What can not be sterilized in the Sterrad?
Cellulose based products
Steris uses what to sterilize?
Peracetic acid
What equipment is sterilized in the steris?
endoscopes
What temperature and how long does it take for the steris to work?
131*F for 20-25 minutes
Items sterilized in the steris can not be what?
stored, they are for immediate use only.
Gravity air displacement sterilizers occurs at what pressure and temperature? How long?
15 to 17 psi at 25-*F for 15 to 30 minutes
Prevacuum sterilizers occur at what pressure and temperature and for how long?
27 psi, 270F to 276F. minimum exposure time is 4 minutes for a wrapped item. complete cycle takes 15-30 minutes.
The flash sterilizer is set at what pressure and temperature?
27 psi and 270*F
For an unwrapped, nonporous, stainless steel items without a lumen are exposed for a minimum time of what?
3 minutes
For porous items or instruments with lumen or instrument marking tape the exposure time is what for prevacuum and gravity displacement?
4 minutes for prevaccum
10 minutes for gravity
The biological monitoring spore test for a EO gas sterilizer is what?
bacillus subtilis
The biological monitoring spore test for a steam sterilizer is what?
Bacillus steraothermophilus
Muslin must be at least how many threads per square inch?
140
Woven textile drape packs should not exceed what size and weight?
12x12x20 inches, weigh no more than 12 pounds.
Surgical instrument packs should not exceed what weight??
16 pounds
Doors to the OR are kept closed to maintain what type of air pressure in the room?
positive
What type of action is used to surgically clean the hands and arms?
Chemical (germicidal) and mechanical
What part of the gown is considered sterile?
The front from chest to table height or the height of the surgical field.
Are the sleeves of the gown sterile?
They are sterile 2 inches above the elbow to the proximal edge of the cuff
