12 Flashcards
ultrasonic cleaning vs ultrasonic waves
ultrasonic cleaning = cavitationultrasonic waves create minute gas bubbles, implode, removes debris
washer decontaminators vs disinfectants
washer decontaminators carry no specific claims on antimicrobial efficacywasher disinfectants achieve high level disinfection
what is the only approved method to dry instruments
filtered medical grade compressed air
characteristics of wrapping for sterile instruments
permeable to steam/gasesresistant to heatresistant to physical damage/penetrationminimal wrap memorylong shelf lifefree of toxic ingredients/dyesstorage in controlled air/temp environment
most common wrapping material used for steam sterilization
cotton muslin (140-270 count)requires double wrapnot moisture resistant
how does steam sterilization kill microorganisms
coagulation and denaturation of proteins by moist heat
what is the typical temperature for steam sterilization for 30 minutes in a gravity displacement sterilizer? how long should it dry?
121 C (250 F) 15-30 minutes drying
what is the typical temperature for steam sterilization for 4 minutes in a pre vacuum unit
132 C (270 F)
how long does flash sterilization take? what desired temperature?
3 minutes135 C (275 F)1 min drying
shelf life of 2 layer cotton muslin
2 days
shelf life of 2 layer each double wrapped cotton muslin?
3 weeks
shelf life of polypropylene peel pouches
12 months/1 yearwater impermeable
most common chemical sterilant for liquid cold sterilization
glutaraldehyde14 d half life
most common type of steam sterilization autoclave in vet practice
gravity displacement sterilizer
recommended indicators of sterilization
type 1 (tape) to be on outside of outer wraptype 5 (react to all parameters) in inside of deepest portion of pack
