Disinfection/ sterilization Flashcards
(25 cards)
methods of control
sterilization, disinfection, cleaning
Destroys all forms of microbial life including parasites, fungi, bacteria, bacterial spores, and viruses
Sterilization
eliminated virtually all recognized pathogens but not all
Disinfection
Chemical disinfection of tissue usally skin or mucous membrane
Antisepsis
Removal of pathogenic microorganisms from inaminate (non-human).
Sanitation
Removal of foreign material such as soil or body secretions but does not imply sterilization or disinfection.
Cleaning
-cidal
suffix meaning death
static
no further growth can occur but microorganism is not killed
critical items such as needles and surgical equipment
contact with human tissue
contact with non-sterile mucous membranes and body surfaces such as ETT tubes and laryngoscope blade
Semi- critical items
contact with skin such as counters or stretchers
non- critical items
intermediate bacterial forms that develop in response to adverse condition
Endospores
Prion disinfection
high concentration NaOH
3 types of sterilization
Incineration, autoclave, ethylene oxide
Things that should incinerated
anything diposable that could have been contaminated with bodily fluids; gloves, used needles, lab cultures, blood samples, bandages
sterilization method that uses pressure and steam to kill microorganisms. 15 psi, 121C in 15 min
Autoclave
ETO/ ethylene oxide
sterilization: kills all microorganisms; most respiratory equipment is sterilized this way.
Types of disinefection
chemical, mechanical
low level disinfectants
Alcohol, quatenary ammonium compounds
Intermediate level cleaners
Cholrine containing agents, iodine, phenolic compound
High level disinfectant, toxic to tissue
Glutareldehyde
mechanical disinfection that uses moist heat at 77C for 30 min
Pasteurization
Filtration- microbes get caught in the filter surface. Give 2 types.
membrane filters, HEPA filters
protects the workers from aerosols, uses HEP filters, redierct air flow, exhaust system
Bio safety cabinets
