HM MAN ch 10: disinfectin and sterilization Flashcards
____ is a less lethal process than sterilization, which kills disease causing micro-organisms
disinfections
what is the contact time for chlorines?
2-10 mins
what is the contact time for complex phenols?
10 mins
what is the contact time for dual/synergized quaternary ammonium compounds?
10 mins
what is the contact time for iodophors?
10 mins
what is the contact time for phenol-alcohol combinations?
10 mins
what is the contact time for other halogens?
5 mins
what level of disinfectants are glutaraldehyde solutions?
high-level
chlorine dioxide solutions have a rapid action of __ minutes for disinfection or __ hours for sterilization.
3 minutes
6 hours
Iodophors are classified as what level of disinfectant?
intermediate
iodophors have a biocidal activity that is accomplished within __ to __ minutes of exposure.
10-25
Phenolics are have what level of disinfectant?
intermediate
to prevent skin and eye irritation, protective gloves and eyewear must be worn during what’s use?
phenolics
three-way syringe tips, high volume evacuator saliva ejector tips and radiographic positioning devices are all example of what classification and require chemical disinfection?
semi-critical
what is the highest level of contamination control?
sterilization
why is sterilization the highest level of contamination control?
because it results in the total destruction of all forms of microbial life
what is the safest method and provides an effective cleaning process?
automated washer processor
which process is safer and more effective than manual scrubbing?
ultrasonic cleaning
when the sound waves travel through the liquid, millions of tiny bubbles form and burst continuously. what is this process called?
cavitation effect
how does the cavitation effect work?
the bursting bubbles scrub everywhere the liquid can penetrate
limit ultrasonic cleaning time to ___ to avoid damage to instruments.
5 minutes
never use what to remove instruments from the ultrasonic cleaning unit.
your hands
heat sealed overwrapping will extend a 30 day shelf life to ___ days.
180
what is the shelf life of an item that has a paper envelope sealed with sterilization tape?
365 days
what is the shelf life of an item that has a nonwoven blue wrap.
30 days
what is the shelf life of an item that has a nonwoven blue wrap, plastic covered, heat-sealed?
365 days
what is the shelf life of an item that has a peel plastic packs, heat-sealed or self sealed?
365 days
what is the shelf life of an item that has parchment paper or dennison wrap
30 days
what is the shelf life of an item that uses glass test tubes with screw caps?
indefinite
___ is the most dependable and economical method for sterilization?
steam under pressure
what are the two most common types of steam sterilizers used in the Navy?
- downward displacement (gravity)
2. high temperature
when does the timing begin when using the downward displacement autoclave?
when the temperature is above 245 F
what is the most modern and economical autoclave to operate and requires the least time to sterilize a single load?
prevacuum, high temperature autoclave
sterilization using the prevacuum high temperature autoclave can be accomplished at ___ degrees F for __ min or ___ degrees F for __ mins
250 F for 30 minutes
273 F for 10 minutes
Wrapped covered opeaned instruments placed in perforated trapys are flash sterilized for __ minutes at ___ Degrees F.
3 minutes at 270 Degrees F
How frequent must all Navy Prevacuum sterilizers be tested with the bowie-dick test?
daily
A typical dry heat cycle is __ minutes at ___ - ___ degrees F
90 minutes at 320-345 degrees F
what is the only liquid chemical that is capable of rendering an item sterile?
glutaraldehyde
an item to be sterilized must be totally submerged in the glutaraldehyde solution for how long?
10 hours
what are the effective and preferred methods of strilizaion for surgical instruments?
steam autoclave
dry heat oven
chemical vapor
ethylene oxide
one accepted method of sterilization for burs and diamonds are to place them in a screw cap glass test tube or aluminum foil wrapped bur block and dry heat sterilize for __ minutes at __ to __ degrees F.
90 minutes at 320-345 degrees F
what involves lookin at the gauges and readings on the sterilizer and recording the temperatures, pressure, and exposure time?
physical monitoring
what involves the use of a heat-sensitive chemical that changes color when exposed to certain conditions?
chemical monitoring
___ are chemical dyes that change color when exposed to steam, dry heat, or chemical vapor for a specified period of time?
internal indicators
what are designed to assess whether sterilization actually occurred and to confirm that all bacteria and endospores have been killed?
biological monitors
the CDC, and the ADA recommend that biological monitoring be performed at least how frequent? though they preferably recommend ___.
at least weekly but preferably daily
