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clinic Disinfection
disinfection
58
Dentistry
Undergraduate 1
05/05/2014

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Term
may become contaminated
not directly involved in infectious disease transmission
does not require strict decontamination procedures
Definition
Environmental Surfaces
Term
high potential for direct contamination from spray or spatter or by contact with DHCP's gloved hand
Definition
clinical contact surfaces
Term
do not come into contact with patients or devices
limited risk of disease transmission
Definition
housekeeping surfaces
Term
clean housekeeping surfaces daily with water and detergent or EPA registered low-level disinfectant
Definition
true
Term
either use surface barriers that can be changed between patients on Clinical Contact Surfaces OR
Definition
clean then disinfect using an EPA approved low to intermediate level (tuberculocidal claim) hospital disinfectant
Term
not all surface barriers are
Definition
biodegradable
Term
surface barriers can
Definition
cost more than chemical wipes
Term
do NOT use what on environmental surfaces
Definition
sterilant or high level disinfectants
Term
cleaning and disinfecting can be
Definition
a one stop process
Term
if visibly soiled, cleaning and disinfecting becomes
Definition
a two step process (clean, then disinfect)
Term
concentration and nature of microorganisms
amount of accumulated bio-burden
concentration of chemical
exposure time
Definition
factors of clinical effectivness
Term
chemicals are not effective against
Definition
highly resistant forms (SPORES)
Term
If you can sterilize
Definition
do not disinfect instead!
Term
use an intermediate level disinfectant if
Definition
there is visible blood
Term
formulated for use in living tissues
Definition
Antiseptics (FDA)
Term
used for germicides or surface disinfection
Definition
Disinfectant (EPA)
Term
can disinfectants and antiseptics be interchanged?
Definition
NO
Term
misuse if disinfectants and antiseptics
Definition
can lead to tissue toxicity or equipment failure
Term
immersion sterilants
sprays
wipes
environmental surface solutions
Definition
Product varieties
Term
Must be registered with and have a label from EPA
Definition
requirement for use as disinfectant
Term
high level disinfection use
Definition
must be stated on the label
Term
tuberculocidal claims are labeled as
"virucidal and fungicidal hospital disinfectant"
ADA seal required
Definition
intermediate level disinfectant
Term
Borad spectrum
Rapid lethal action
Not affected by physical factors
non toxic. non allergenic
residual effect
compatible
economical
easy to use
odorless
Definition
Ideal disinfectant criteria (no single product meets all of these!)
Term
inactivates bacterial spores and all forms of bacteria, fingi and viruses
contact time determines disinfection or sterilization
Definition
High level disinfectant
Term
inactivates all forms of microorganisms except spores, but DOES kill TB
Definition
intermediate disinfectants
Term
inactivates vegetative bacteria and some viruses but NOT TB or spores
Definition
low level disinfectant
Term
bacterial spores
Definition
high resistance (only killed by sterilization)
Term
vegetative bacteria, fungi and enveloped viruses
Definition
low resistance
Term
mycobacterium, non enveloped viruses
Definition
intermediate resistance
Term
high level disinfectant/sterilant
use: submersion
Advantages:
most potent germicide
EPA registered sterilant
kill time 10 hrs
active in presence of organic matter
prolonged activated life
useful for heat liable materials
Definition
Glutaraldehydes
Term
prolonged interval required for use as sterilant
items must be rinsed with STERILE water
Not good for surfaces (environmental)
corrosive to some metals
highly toxic
Definition
disadvantages of Glutaraldehydes
Term
only for heat sensitive critical and semi critical devices
powerful, toxic chemicals
rinse safety concerns
heat tolerant or disposable alternatives are available
Definition
Liquid Chemical sterilant/ disinfectant
Term
EPA intermediate
broad spectrum
5-10 min
few adverse tissue reactions
residual effects
dilution and contact time CRITICAL
daily prep necessary
may discolor
inactivated by hard water
Definition
Iodophores
Term
first introduced by Dr Lister 1850
Definition
complex synthetic phenols (carbolic acid)
Term
EPA intermediate
broad spectrum
rapid tuberculocidal (1-5 min)
useful on metal, glass, rubber, plastic
NOT sporicidal
difficult to rinse
film accumulation
irritating
can etch glass or degrade plastic
Definition
Complex synthetic phenols
Term
intermediate EPA
new generation tuberculocidal
broad spectrum
rapid evaporation
Definition
Quaternary Ammonium Compounds (alcohol dual)
Term
unstable
mixed daily
EPA intermediate
no toxic residue
unaffected by water harness
corrosive to metals
damaging to fabrics
degrades plastics and rubbers
Definition
Hypochlorite Compounds (Clorox)
Term
rapid bactericidal
tuberculocidal and virucidal
not very irritating
economical
NOT sporicidal
rapid evaporation
Definition
Alcohol
Term
is alcohol recommended as a surface disinfectant?
Definition
NO
Term
EPA intermediate and high
broad spectrum
no odor or irritation
biodegradable
comprise certain types of metals
can damace ocular tissue
few long term studies
Definition
Accelerated Hydrogen Peroxide
Term
All sterilization packaging must include _____________.
Definition
an internal indicator. if it is not visible then an external indicator must also be used
Term
______________ indicate that sterility has been achieved
Definition
Biological indicators
Term
he chain of infection comprises ______________ elements
Definition
five
Term
Host susceptibility depends on ____________.
Definition
overall health and vaccination status
Term
All employees in dental offices must be offered ______________
vaccinations by the employer
Definition
Hepatitis B
Term
Hand hygiene is _____________.
Definition
the single most important factor in preventing disease transmission
and is performed with the objective of removing transient flora that can be transmitted from one person to another or to an inanimate object.
Term
Keeping fingernails (or artificial nails) short and smooth
_________.
Definition
reduces risk of glove puncture
Term
Compliance with hand hygiene can be improved
by ___________.
Definition
using soap containing emollient, avoiding hand hygiene products with ingredients that a user might be allergic to, selecting products that feel and smell pleasent
Term
he use of barrier protection for disinfection _____________.
Definition
may better protects areas that are more difficult to access, saves time, and reduces need for cleaning and disinfecting with chemicals
Term
he Centers for Disease Control and Prevention recommends
the use of single-use, disposable patient care items when
possible to reduce the risk of _______________.
Definition
cross-contamination and
disease transmission
Term
Sharps disposal chairside reduces the risk of _____________.
Definition
percutaneous injuries.
Term
SHA is charged with protecting the health and safety of
______________ in the United States.
Definition
all workrs
Term
Waste contact and noncontact amalgam must be _____________.
Definition
gray bagged
Term
____________ can be placed in presoaks and ultrasonic cleaners
or washers/disinfectors for cleaning prior to packaging and
sterilization
Definition
closed perforated cassettes
Term
Enzymatic solutions/foams begin dissolving _____________.
Definition
organic tissues (blood,protein, carbohydrates, fat) and help breakdown bio-burden
Term
(n) _____________ must be used on clinical contact surfaces
Definition
EPA registered, hospital grade disinfectant
Term
A one-step process combining cleaning and disinfecting
of clinical contact surfaces may be used if _____________.
Definition
1) there
is no heavy soiling of the surface and 2) the chemical used
contains both a disinfectant and a detergent.
Term
f using impregnated wipes to clean and disinfect clinical
contact surfaces, check that the wipes contain sufficient
liquid to _____________.
Definition
cover the surface, remain wet for the required TB kill time
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