Lecture 11 - Microbial Control Flashcards
Four possible outcomes microbial control outside the body
sterilization
disinfection
antisepsis
decontamination
what is the primary targets of microbial control?
microorganisms capable of causing infection or spolage
Considered the most resistant microbial entities
bacterial endospores
Destruction of endospores is the goal of ____.
sterilization
most resistant type of microbial forms
- prions
least resistant type of microbial forms
- enveloped viruses
A process that destroys or removes all viable microorganisms, including viruses.
sterilization
any material that has been subject to sterilization
sterile
sterilized products are essential to human well being (3)
- surgical instruments
- syringes
- commercially packaged foods
The use of a physical process or a chemical agent to destroy vegetative pathogens but not bacterial endospores.
disinfectection
are normally only used on inanimate objects
disinfectants
the growth of microorganisms in blood and other tissues
sepsis
any practice that prevents the entry of infectious agents into sterile tissues and prevents infection
asepsis; aseptic techniques
chemical agents that kill microorganisms
germicide and microbicide
chemical that destroys bacteria except for those in endospore stage
bactericide
kills fungal spores, hyphae, and yeasts
fungicide
inactivates viruses, especially on living tissue
virucide
capable of killing endospores
sporicide
Prevent the growth of bacteria on tissues or objects in
the environment
bacteriostatic agents
Inhibit fungal growth
fungistatic chemicals
Chemicals used to control microorganisms in the body (antiseptics and drugs)
microbistatic agents
Any cleansing technique that mechanically removes
microbes and debris
• Reduces contamination to safe levels
sanitization
- reduction of the # of microbes on the skin
- involves scrubbing the skin or immersing it in chemicals or both
- emulsifies oils on the outer cutaneous layer
- mechanically removes potential pathogens on the outer layers of the skin
antisepsis/degermation
expected to come into contact with sterile tissues
critical medical devices