Ch. 5 Control of Microorganisms

3 decisions about how to best control microorganisms daily

• inhibit growth

• remove them

• destroy them

a dead body could be a host for a _______ .

virulent organism

the first line of defense is _____.

PPE

PPE consists of:

• impermeable gown

• gloves

• face shield

• shoe covers

to treat every body as if it’s carrying deadly or infectious diseases

universal precautions

to reduce microbe populations to a safe level as determined by public health

sanitation

includes all methods of microbial control

sanitation

the method used to reach safe levels is determined by _________.

surface and level of sanitization

3 types of sanitation

• sterilization

• disinfection

• disinfectants

the process that eliminates a defined scope of organisms

disinfection

disinfection can include some _______.

spores

the destruction of all life forms and their products

sterilization

this sanitation method includes bacterial spores

sterilization

the chemical agents used on inanimate objects

disinfectants

substances applied to the skin to eliminate or reduce the number of bacteria present

antiseptics

prevent or inhibit microbial growth on living tissue

antisepsis

_______ do not kill spores.

antiseptics

9 factors that influence the degree of killing:

• type of organism

• microbial load

• concentration of sanitation agent

• presence of organic material

• nature of surface

• contact time

• temperature

• pH

• compatibility

the number of organisms

microbial load

more organisms require more _____ to kill

exposure time