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Destruction of microorganisms By: Miss Sara Alamri, Miss Heba Hawsawi and Miss Arwa Alassiri
1. In most medical settings, the
control of microorganisms is of
paramount
concern. Decontamination refers
to the destruction or removal of
microorganisms from instruments,
materials, body surfaces, etc.
Many agents and procedures have
been developed to accomplish this
end. It is imperative that you, as a
medical professional, understand
the modes of action, level of
activity and other factors which
2.
3.
4.
5. Germicidal systems fall into three
categories:
Decontamination:
the process of removing foreign material
such as blood, body fluids, or
radioactivity. It does not eliminate
microorganisms but is a necessary step
preceding disinfection or sterilization.
6. are substances that
are applied to destroy
microorganisms that are living on
the objects Disinfection does not
necessarily kill all
microorganisms, especially
nonresistant bacterial spores it is
less effective than sterilization,
which is an extreme physical
and/or chemical process .
7. Some control terms :
Bactericidal drugs are those that
kill target organisms. Examples
of bactericidal drugs include
aminoglycosides,
cephalosporins, penicillins, and
quinolones.
Bacteriostatic drugs inhibit or delay
bacterial growth and replication.
Examples of such include tetracyclines,
sulfonamides, and macrolides.
10. Number of
microorganisms
Species and
Temperature type of
microorganism
Factors
influencing
disinfection
Physiology of
Environment
organisms
11. Concentration
and Potency of
Disinfectants
Duration of
pH Exposure
Factors
influencing
disinfection
relative Water
humidity hardness
12. Sterilization is any process that eliminates
(removes) or kills all forms of microbial life,
including transmissible agents (such as fungi,
bacteria, viruses, spore forms, etc.) present on:
a surface
contained
in a fluid
in medication
in a compound such as
biological culture media
13. heat
Sterilization : chemicals
can be achieved
by applying the
proper irradiation
combinations of
,,, high
pressure
filtration
