STERILIZATION&DISINFECTION Flashcards
sterilization is
killing of all microorganism include bacterial spores and in germ free state
disinfection is
killing of many but not all microorganisms , bacterial spores not killed
disinfectant is
is a chemical agent that is used for disinfection used in inanimate tissue
antiseptics is
safe to apply at skin or mucous membrane living tissue used to prevent infection by inhibiting growth of bacteria
bacericide/cidal is
killing microbes excepts those at endospore stage ex: fungicidal algacidal
bacteriostatic is
inhibit not killl microbes ex: fungistatic, algastatic
factors influence efficacy of strelization
contact time
physiochemical env
temp
type of microorganism
antimicrobial procedure used to control microbial growth is based on ?
types of microorganism - some more resistant to the bacteria
extent of microbial population - large take more time to destroy
environmental conditions - presence of blood, dirt , grease
potential risk
types of environment contact
direct contact w tissue
hv contact w mucous membrane but not penetrate
indirect contact w unbroken skin (stethoscope)
physical method to control microbial growth
heat sterilization
filtration
radiation
chemical method to control microbial growth
gas sterilization- used ETHYLENE OXIDE used for endoscope
disinfection used germicidal chemical like alcohol
asepsis is
practice that prevents the entry of infections agent into sterile tissue and thus prevent infection
the methods of microbial control used outside he body are designed to results
sterilization
disinfection
decontamination
antisepsis
sepsis is
growth of microorganism in the blood and other tissue
action of physical and chemical on microorganism
cell wall and membrane destroy allows chemical to enter
cellular synthesis -ribosomes inhibit protein needed for growth
proteins -prevent from interacting w its chemical substanct
