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Presented by Group 1

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vincent rivera

on 25 June 2014

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Transcript of Presented by Group 1

STERILIZATION VERSUS DISINFECTION
--> Joseph Lister - aseptic surgery

DISINFECTION
- process that eliminates a defined scope of microorganisms.

STERILIZATION
- destruction of all forms of life including bacterial spores.
PHYSICAL METHODS OF STERILIZATION
*
Incineration
-
burned to ashes ; 870° - 980°

*
Moist Heat
-
steam under pressure
-
bio hazardous trash & heat stable objects

*
Dry Heat
-
longer exposure times ; 1.5 - 3 hours

*
Filtration
-
for antibiotic solutions.

*
Ionizing radiations
-
sterilizing disposables
-
Et 0
FACTORS THAT INFLUENCE THE DEGREE OF KILLING
* Types of organisms
* Number of organisms
* Concentration of disinfectina agent
* Presence of organic material
* Nature of surface to be disinfected
* Contact time
* Temperature
* pH
* Biofilms
* Compatibility of disinfectands and sterilants
TYPES OF ORGANISMS
PRIONS Most Resistant

BACTERIAL SPORES

MYCOBACTERIA

NONLIPID VIRUSES

FUNGI

BACTERIA VIRUSES Least Resistant
NUMBER OF ORGANISMS
Microbial load
- number of organism
( bioburclen )
present
That's all.
Thank You!
Presented by Group 1
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