Edapt
Week 4 Concepts:Controlling Microbial
Growth
Which of the following microbial forms has the highest
resistance to
physical and chemical controls? Bacterial
endospores
The method of removing vegetative microbial life forms and
debris to
reduce contamination to safe levels is termed
.
Sanitization
Sterilization is achieved by steam
autoclave.
HEPA filters are used to remove microbes from air.
The alcohol wipe used on a patient's skin before an injection
is an example of antisepsis.
Chlorine is a halogen used in gaseous and liquid form for large
scale
disinfection of drinking water and sewage.
The sterilizing gas used in chemiclaves is ethylene oxide .
Sterilization – destruction of all microbial life including
endospores.
Disinfection – destruction of most microbial life, but often does
not kill spore-forming bacteria.
Antisepsis (also called degermation or degerming ) – disinfection on a
living surface, such as patient’s arm.
Decontamination (also called sanitization) – mechanical removal of
most microbes from an animate or inanimate surface and can
be accomplished with hot water, steam, or chemicals.
Bacteriocide/Bacteriocidal
–
kills
bacteria.
