CH 8 INFECTION CONTROL Flashcards
Explain the difference between antisepsis, disinfection, sanitization, and sterilization
- Antisepsis: using physical/chemical means to remove microorganisms from living tissue.
- Disinfection: Removal of vegetative bacteria from tissue or an object.
- Sanitization: Reduction of microorganisms from an object through cleansing.
- Sterilization: Removing all infectious particles, including spores.
What is the term for slowing of the rate of microbial growth?
Microbistasis
Name an infectious agent that has high resistance.
Bacterial endospores
Name some infectious agents with moderate resistance.
- Tuberculosis
- Staph aureus
- Pseudomonas
- Protozoans
- Unenveloped viruses
Name some infectious agents with low resistance
- Most vegetative bacteria
- Fungal spores/hyphae
- Enveloped viruses
- Yeasts
- Trophozoites
What does HEPA stand for?
High efficiency particulate air
What is a common example of a filtrative device?
Masks
Does filtration produce sterile liquids?
No
Why would you use filtration rather than heat?
For liquids sensitive to heat like drugs.
What is another term for incineration?
Dry heating
What temperature is pasteurization done at?
About 69-72 degrees celsius
At what temperature is dry heating/incineration done?
800-6500 degrees
What temperature are most household freezers kept at, and what temperature is more longer term microbistasis done at?
-20 degrees and -80 degrees
What does radiation do to bacteria?
Disrupts DNA
What are two examples of ionizing radiation?
Gamma rays and x-rays