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invasion of human body tissue by microorganisms which multiply and produce a reaction
act of washing one's hands with soap and water or alcohol soultion
specialized clothing or equipment worn
method of using appropriate barriers to prevent trasmission of infectious organisms from contact with blood and all body fluids
absence of microorganisms that cause disease
any activity or procedure that prevents infection or breaks the chain of infection
procedures performed to reduce the number of microorganisms to minimize their spread
procedures performed to eliminate the presence of all microorganisms, and/or to prevent the introduction of microorgansms to an area
conductivty (of water)
a measurement of the ablility of wate to carry an electrical current
a unit of measurement that expresses te amountof resistance to the flow of an electric current
the process by which ions with an electrical charge are removed from water
the diffusion (flowing) of water through a semi-permeable membrane to eliminate impurities that it contains
a mineral commonly found in water that is derived from silca found in quartz and other components
a compound commonly found in water that is created when chlorine is combined with another element or radical
occurs when water contains sediments or solids that, when stirred, make the water appear cloudy
water that has been treated and is acceptable for drinking
unit of measurement; 1/1,000 or a millimeter or 1/25,000
cation resin tank
a tank into which untreated hard water flows, and in which sodium ions are exchanged for calcium and magnesium ions to produce soft water
basic attire worn by central service techs
- a facility-issued scrub uniform
- hair covering that covers head and facial hair except eyebrows and eyelashes
- shoes with non-skid soles
attire for decontamination area
- fluid resistant covering with sleeves
- full face protection
- shoe covers
...adopted the use of universal precautions as a major component of its blood borne pathogens
- 60-65 F
- 30-60% humidity
- 10 air exhanges per hr
prep and pack
- 68-73 F
- 30-60% humidity
- 10 air exchanges per hr
- 75 F - or lower
- less than 70% humidity
- 4 air exchanges per hour
what to wear in decontamination
surgical scrubs and PPE
surgical scrubs and hair covering
surgical scrubs, hair covering, masks may be required
may be contaminated, ppe is required
- peripheral support areas to the OR, central service (clean and sterile storage), access corridors to OR
- surgical scrubs and hair coverings
- area where sterile procedures are performed
- surgical scrubs, hair coverings, and masks required
- normal traffic areas
- street clothes
work area cleanliness
- floors wet mopped cleaned daily
- work tables cleaned daily
- light fixtures at least every 6 months
2 types of aseptic tech.
- medical asepsis (clean tech)-reduce number of microorganisms ex: hand washing and decon equip
- surgical asepsis (sterile tech)-eliminate the presence of microorganisms
5 principles of asepsis
- know what is dirty
- knowwhat is clean
- know what is sterile
- keep the 3 conditions
- remedy contamination immediately
water from any source typically contains
- dissolved solids
- oranic and non-organic chemicals
water used as a final rinse in any cleaning process should be....
purified to reduce the eliments found in water
factors that impact water
- total dissolved solids
- acidity or alkalinity
- other particales
todays technology provides water that is...
resistant to a min of 300,000 ohms
total dissolved solids include..
hard water...(dissolved stains)
stains (water spot), bluish or rainbow-color and powdery stins result in dissolved stains
bluish or rainbow stains are caused by...
iron and silicates in the water
powdery stains or chalky build-ups on surfaces of cleaning machines result from...
silicates are natural minerals found in....
- soil and therefore found in water.
- silicate level of tap water is usually 400 parts per million (ppm) or more
it is important to conduct daily tests for a few weeks to assure the silicate level is consistently at...
100 ppm or less
purified water should have a pH level of...
chlorides are aways found in...
- treated water
- most tap water has a chloride concentration of 400 ppm or more the goal: 100 ppm or less.
the size of filters to be used is also important... the filter size is measured in..
- water purification usually involves a pre-and post-filter
granular activated charcoal (GAC) is used to....
- remove chlorides in water
- ex: fresh water fish aquariums
an acceptable amount of chlorides in the final water is ...
100 ppm or less
softeners are used to remove ...
- the calcium and magnesium in the water
- word "softened" describes the result of the process
- process involves use of cation resin tank
- dissolved sollids
- along with particles, bacteria, pyrogens, and endotoxins
deionization systems are used for heating/cooling therapy units, and for...
the final rinse water in anual and automated cleaning processes
deionization process does remove....
- dissolved solids and gases
- provides for little or no removal of organics, particles, bacteria, pyrogens, and endotoxins, this is why filters must be part of the system
reverse osmosis systems require the water to be treated by (in sequence) pre-filter, softener, GAC, and another filter
reverse osmosis can remove a large percentage of...
- dissolved solids and organics
- capable of removing all particles, bacteria, pyrogens, and endotoxins
- removes LITTLE if any gases
diff types of chemicals used in cleaning process include:
- enzymatic products
enzyme products contain protease enzyymes that are especially useful in removing...
proteins such as dried on blood and tissue
enzymatic solutions should not exceed....
- temperatures of 140 degrees F
- because the enzymes become inactive
- multi-enzymatic products contain protease, lipase, and amylase
detergents do not....
kill microorganisms, however, germicidal detergents do have this capability
are not typically required if the water quality and soap/detergent mixtures are correct and if equipment is operating properly
main funciton is to remove soil, not kill microorganisms
manufacturer's labels and MSDS materias always indicate that ...
city, county, and state laws concerning disposal should be followed
brushes used for cleaning made of..
brushing should be done under water by ...
following the grain to prevent the formation of aerosols
wash cloths are made of
- some have lint and others are low-or-lint free
sponges can be used to ...
- clean basins
- they should be replaced daily to assure they will not become a source of contamintion
- their structure makes them impossible to completely clean and sterilize
each year, approximately_____pts develop healthcare-associated infection
to protect themselves from splashes and spills, central service technicians assigned to the decontaminationarea should wear:
the main theory of standard precautions is that:
pts may pose a risk of infection whether they have been diagnoed with an infectious disease or not
requirements of OSHA bloodborne pathogen standard
- provide hep B vaccine to employees at no cost
- observe standard precautions
- use engineering controls to prevent biohazard exposures
absence of microorganisms that cause disease is called:
what color should biohazard labels/signs be
traffic control/dress code requirements applies to the OR
which of the following is a system used to treat the final rinse water used for cleaning?
blush or rainbow-type stains are caused by ____ in water
iron and silicates
ideal level of silicates in water used for cleaning is ____ ppm or less
which of the following can be removed from water when a revese osmosis process is used??
main purpose of manual cleaners is to