Module 6 quiz Flashcards
List the microbes in order from most to least resistance to disinfectants
- Bacterial spores
- Tubercle Bacilli
- Lipid viruses
- Vegetative bacteria
Hexachlorophene products, such as phisohex, should ne be used to do what?
To bathe newborns
Glutaraldehydes may be used in the health care setting to do what?
To disinfect metal equipment
Which of the following is a proper procedure for loading a bench top autoclave?
Material placed on perforated autoclave trays
An effective high level disinfectant would be what?
- Viricidal
- Sporicidal
- Fungicidal
- Bactericidal
A detergent with antimicrobial activity is what?
Zephiran
What falls within the term Disinfection?
- Treatment of instrument with a chemical solution that kills pathogenic microoganisms
- Cleansing work surfaces with bleach solution or disinfectant wipes after each shift
- Killing pathogenic microbes, but not necessarily all microbes on an inanimate surface
What falls within the term sanitation?
Used dishes are washed with a detergent and hot water followed by hot water rinse
What falls within the term Antisepsis?
Cleansing the skin before giving an injection
What falls within the category of sterilization?
- Processing scalpel blades/ dental equipment to be used in surgery in an autoclave
- Required for material coming in contact with sterile tissue
- Killing all forms of microbial life, including spores
- Processing a pacemaker in ethylene oxide prior to insertion in a patient
What falls within the category of Cleaning?
Washing used instruments with a detergent and water before further processing
The optimal concentration of alcohol used as an antiseptic is what?
70%
A suture tray wrapped and secured with autoclave tape does not show any dark markings on the take is what?
It may not have been autoclaved
What are the following factors that will affect the disinfectant properties of bleach?
- Strength of the bleach solution
- Time elapsed since bleach was diluted and dispensed
- Presence of blood in the material being disinfected
In the health care setting, iodophores may be used for what?
Skin cleansing prior to invasive procedures
Alcohols suitable for use as disinfectants include what?
Ethanol and Isopropyl alcohol
What are indications that autoclaved materials may not be sterile?
- Report indicating growth from spore test
- The date on the package indicates the material was autoclaved over a year ago
- Tape seal is broken
Most biological waste produced in a clinical setting is terminally decontaminated by what?
Inceneration
A disadvantage of iodine as a disinfectant is what?
May cause allergies
Two spore strips were placed in the routine autoclave load. These two strips and a control strip (not autoclaved) were incubated three days in broth. All three strips gave a cloudy broth. What does this mean?
The autoclave was not functioning properly
According to the spaulding classification, which of the following would be classified as critical item?
Hypodermic needles
Ethylene oxide is what?
- Is toxic to human tissue
- Kills all forms of microbial life (including spores)
- Does not destroy heat sensitive plastic items
Detergent and soaps have what in common?
- Reduce surface tension
- Act as surfactants
- Act as wetting agents
Which of the following disinfectants has the ability to kill all forms of microbial life including spores?
High level disinfectants
HEPA filters can be used to do what?
Remove microorganisms from air in a patients room
Vinyl gloves used as part of standard precautions would be considered what?
Non critical items
The most common use of alcohol in the health care setting is what?
Skin antisepsis
Aseptic technique would be used to do what?
- Keep sterile items sterile
- Remove liquids from a vial
- Collect laboratory swabs for culture
Methods of microbial control can include what?
- Ionizing radiation
- Boiling
- Ultraviolent light
When using “sterile” items, you may use them if what?
- Wrappings are not wet
- Indicator strip is colored
- Item has been properly sterilized
The usual time for items to be sterilized in an autoclave is what?
15 minutes from the time the material in the chamber reaches 121 C
Disadvantages of bleach as a disinfectant include what?
- Corrosive metal
- Should be diluted fresh daily
- Irritating to skin and mucous membranes
Membrane filters can do what?
Remove bacterial from fluids
The culture results of spore controls from a office autoclave indicated growth in the control strip, and growth in the strip placed in the bottom of the chamber. The other strip failed to grow. This is interpreted as what?
The autoclave is not functioning properly
A germicide might kill what?
- Bacteria
- Viruses
- Fungi
A routine patient area could be wiped down (terminally disinfected) with what?
Surface disinfectant spray or wipe
Which of the following is not true of glutaraldehydes?
Sterilization achieved within 30 minutes
A disinfectant that kills vegetative bacteria, tubercle bacilli, fungi, lipid, viruses and under some conditions spores and no lipid viruses is classed by spaulding as what?
Intermediate level disinfectant
Autoclaves require what?
The routine use of spore strips (biological indicator) to ensure efficiency
All of the following are iodine based disinfectants except what?
Chlorhexidine gluconate used for hand washing
A type of disinfectant that has been found to support bacterial growth is what?
Quaternary ammonium compound
You are about to use a needle and syringe to withdraw fluid from a vial for injection in to a patient when you notice that the normally clear fluid appears cloudy. You should do what?
Suspect that the fluid is contaminated with bacteria
Which of the following is the least resistant to the action of disinfectants
Vegetative bacteria
Strong bleach, as defined by health Canada should be what?
Diluted fresh daily, one part bleach plus nine parts water
The main effect of soaps and detergents is what?
Reducing surface tension allowing removal of bacteria
Alcohols are rated as what?
Intermediate level disinfectants
Which of the following disinfectants will definitely not kills tubercles bacilli?
Low level
Pasteurization at 75C for 30 minutes accomplishes all of the following except what?
- Kills tubercle bacilli
- Kills bacterial spores
- Kills lipid viruses
- Kills non-lipid viruses
Kills bacterial spores
A hand wash product containing the following ingredients is highly antibacterial
Chlorohexidine gluconate
Which of the following statements applies to health Canada weak Bleach
May be used for routine cleaning of surfaces
Peroxygens is what?
- High level disinfectants
- May act as sterilants
- Contain peroxide/ peracetic acids
The waiting room in a health care facility often has some toys. Children with infectious diseases may contaminate the toys, making them vehicles of transport for microorganisms. What type of toys do you think are suitable for waiting rooms?
- Plastic with smooth surfaces and no crevices
- May be immersed in liquid disinfectant
The most likely place to find an ethylene oxide sterilzier in a health care setting is where?
Sterile processing department
Glutaraldehyde is an example of what?
A high level disinfectant
