chapter 13 Flashcards
(20 cards)
What is fomite ? Examples
An inanimate object that can transmit infectious pathogens. EX- Doorknobs,toys, and towels
HEPA filters are required for which biological safety level (BSL)?
Level 4 (BSL-4)
What is the purpose of aseptic technique?
To prevent contamination during medical procedures and prevent infection in the patient.
The autoclave uses which mechanism for sterilization?
The autoclave uses heat and pressure for sterilization
The decimal reduction time (D-value) is how long it takes to kill which percentage of a microbial population?
90% of the microbial population
Microbial death follows which type of trend?
Logarithmic trend
How does pascalization control microbial growth?
Pascalization controls microbial growth by using high-pressure treatment
X-rays and gamma rays are examples of which type of radiation?
ionizing radiation
Which method of microbial control introduces double-strand breaks into DNA
Ionizing radiation introduces double-strand breaks into DNA
UV light is an example of which type of radiation?
UV light is an example of non-ionizing radiation
Which physical method of microbial control would surgical staff use to disinfect surfaces in operating rooms?
Chemical disinfectants to disinfect surfaces in operating rooms
How do heavy metals control microbial growth?
Binding inhibiting enzymes and other proteins
A chemical used to control microbial growth on inanimate objects is called what?
disinfectant
What affects the efficiency of a germicide?
Concentration, contact time, and the presence of organic matter
Low-level disinfectants are sufficient to remove microbes from which equipment tiers?
Noncritical equipment tiers
Which halogen or halogen-containing compound is typically used as a form of topical antisepsis?
Povidone-iodine
Contact lens cleaners commonly use which type of chemical agent to control microbial growth?
hydrogen peroxide
Which are the alkylating agents?
Ethylene oxide, formaldehyde, and glutaraldehyde are alkylating agents
Know how to interpret a disk diffusion assay
It is used to evaluate the effectiveness of a chemical agent against a particular microbe
Which test is used to determine if a solution of disinfectant is actively used in the clinical setting and is contaminated
It is used to determine if a solution of disinfectant actively used in the clinical setting is contaminated
