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07 Inf. Asepsis Procedures

Terms in this set (90)

Which should occur following the removal of an alginate impression from a patient's mouth?
Spray the impression with a disinfectant.
Which of the following terms indicates the highest level of killing power?
Bacteriocidal agent
Which is the purpose of placing contaminated dental instruments in a presoaking solution?
Prevents debris from drying on the instruments
Which is an example of a noncritical item in instrument processing and sterilization?
Blood pressure cuff
Which is an improper technique regarding infection control in the dental office?
Eating in the dental laboratory
After instruments have completed the cleaning cycle of the ultrasonic cleaner, they should be
rinsed with water.
When a denture is to be repaired by a commercial laboratory, it should be
disinfected before being sent out and after being received back from the laboratory.
What is the appropriate procedure for preparing to send an impression to a dental laboratory?
Rinse, disinfect the impression, and package for transport.
Wear ________________ when disinfecting operatory surfaces.
utility gloves
Which is classified as a high-level disinfectant?
Glutaraldehyde
What should one do before changing a vacuum line trap?
Evacuate a disinfectant-detergent into the line and flush with water.
The OSHA Hazard Communications Standard requires employers to do all except
submit annual hair sample results of all employees.
Which is an example of a semicritical item in instrument processing and sterilization?
Dental mouth mirror
A victim who immediately feels the effects of a chemical spill with symptoms of dizziness, headache, nausea, and vomiting, is experiencing
acute chemical toxicity.
For which of the following is there not a vaccine?
Strep throat
For each product in the office that contains hazardous ingredients, there must be a(n)
Safety Data Sheet.
OSHA indicates that one way to prevent exposure to human body fluids is to use engineering controls. What is an engineering control?
Using a device to isolate or remove a hazard
Which of the following best describes the exposure control plan required for the office by the Occupational Safety and Health Administration (OSHA)?
A health care facility's written protocol for reducing contact with bloodborne pathogens
Which of the following examples of clinical contact surfaces does not require decontamination after patient treatment?
Sinks
Which of the following is not a recommended method for sterilizing dental burs?
Steam sterilization
What should one do to a clinical contact surface after removal of a plastic surface cover and before seating the next patient?
If no contamination is present, then place a new plastic cover.
Which chemical used for disinfection is classified as a high-level disinfectant?
Chlorine dioxide
Which Occupational Safety and Health Administration (OSHA) document required for the office contains a plan for postexposure evaluation and follow-up?
Exposure control plan
Which is the process that is initiated in the ultrasonic cleaner when sound waves are produced?
Cavitation
There are areas of the instrument processing facility that govern the workflow pattern. The processing should flow in a single loop from
dirty to clean to sterile to storage.
Instruments should be packaged for sterilization to
maintain sterility.
At the beginning of the day after cleaning and disinfecting the operatory surfaces, do gloves have to be worn when placing surface barriers? If so, what type of gloves?
No, use clean bare hands.
Which term is defined as an inanimate object that can harbor pathogens?
Fomite
Select the statement that is not true.
HIV is transmitted through casual contact.
Which of the following microbes on the hands are the most important in the spread of diseases?
Transient flora
Which of the following antimicrobial agents should never be used to disinfect operatory surfaces?
Sterilant/high-level disinfectant
Which method is used to sterilize unwrapped instruments for immediate use?
Flash sterilization
Which statement best describes the disadvantage of using disposable items?
Performance may be less efficient than their reusable counterparts.
From the list below, select the best procedure for reprocessing for an explorer.
Steam under pressure
What is the maximum volume that a single container of alcohol-based hand rub solution placed within a dental treatment room can legally have?
2.0 L
What two bacteria have been most implicated in causing infections from dental unit water?
Pseudomonas aeruginosa and Legionella pneumophila
Which of the following is not a recognized type of regulated medical waste?
Used PPE
For instruments to be sterilized, they must first be
cleaned of blood and debris.
Which of the following are the recommended five parts of the Hazard Communication Standard?
Written program, inventory of hazardous chemicals, SDS for every chemical, proper labeling of containers, employee training
Preventing or removing biofilm from dental unit water lines can be accomplished by these methods except
flushing water lines for 20 to 30 seconds.
After the required OSHA training on bloodborne pathogens is provided at the time of employment, update training is to be given at least every
1 year.
What should be done to a clinical contact surface after its protective surface cover has been carefully removed at the end of a patient appointment?
Nothing—just add a fresh cover for the next patient.
The process that kills disease-causing microorganisms, but not necessarily all microbial life, is defined as
disinfection.
How should a filled sharps container be sterilized before discarding?
Process containers with their vents open.
The best way to avoid contracting a bloodborne disease in the office is to
handle sharps carefully.
Dental treatment water that is unfiltered or untreated may be the source of pathogenic microorganisms, including
Legionella.
Which disinfectant is an iodine-containing compound?
Iodophors
All dental professionals must use surgical masks and protective eyewear to protect the eyes and face
whenever spatter and aerosolized sprays of blood and saliva are likely.
Which of the following may be used for surface disinfectant in the dental office?
Hydrogen peroxide
A sharps container is an example of which type of control?
Engineering
Regulated medical waste in a dental office is comprised of?
Items heavily saturated with blood, tissue and sharps
Which chemical agent is not recommended for use as a surface disinfectant in a dental office?
Glutaraldehydes
The source of bacterial contamination in dental unit water lines is
municipal water.
Which material should be avoided when using it as a cover barrier for a bracket table or mobile cart?
Paper sheet
Which chemical is not recommended as a disinfectant?
Alcohol
How often should a surface on a dental light handle or light switch be replaced?
After every patient
To prevent cross-contamination from clinical contact surfaces in a dental operatory the surfaces should be cleaned and disinfected after treatment or
equipment and surfaces are covered with impervious barriers.
What should one do if the outside of a biohazard bag becomes contaminated?
Place it inside another biohazard bag.
Who is required by the Occupational Safety and Health Administration to pay for the protective clothing used by dental assistants?
The employer
The rule that requires employers to do certain things to prevent employees from being exposed to human body fluids at work is called the
Bloodborne Pathogens Standard.
In order to achieve disinfection on environmental surfaces, the surfaces must first be
cleaned to remove bioburden.
If you opt not to receive a hepatitis B vaccination, you will be required to sign
an informed refusal that is kept on file in the dental office.
What is the maximum number of bacteria allowed by the Environmental Protection Agency per milliliter of potable (drinking) water?
500
When can a liquid sterilant or high-level disinfectant achieve sterilization?
When the solution is used only for the longer exposure times
Which chemical agent is not recommended for use as a surface disinfectant in a dental office?
Glutaraldehydes
__________ is considered regulated waste and requires special disposal.
Human tissue
Which type of sterilization used in the dental office requires the longest processing time?
Dry heat sterilization
The microbial level in untreated dental unit water is usually
higher than drinking water.
What method of decontamination or protection is recommended for dental light switches?
Use of surface covers
Repeated exposure to chemicals at low levels for extended periods of time can result in liver disease or brain disorders that are examples of
chronic chemical toxicity.
Which is classified as a low-level disinfectant?
Quaternary amine
Which item is an example of regulated medical waste?
Used anesthetic needles
What are standard precautions?
The concept that considers that blood and all patient body fluids are potentially infectious
A slime layer that forms in all water environments and allows microorganisms to stick to water containers or tubing is called
biofilm.
How often should one replace the plastic cover placed over the light handles?
After every patient
What kinds of dental operatory surfaces best lend themselves to being covered with a surface barrier rather than being cleaned and disinfected between each patient?
Difficult to clean
According to the OSHA Hazard Communication Standard, who determines the hazards of a chemical?
Manufacturer
Which item listed is not a clinical contact surface?
Sink in the treatment room
The OSHA Bloodborne Pathogens Standard is designed to prevent which of the following diseases?
Hepatitis C
An intermediate-level surface disinfectant would not kill which microbe?
Spores
The best way to determine how to properly use a disinfectant is to
read the disinfectant label.
The use life of a disinfectant is defined as the length of time that the product can be
used after it has been opened, activated, or prepared for use.
The solution in the ultrasonic cleaner should be replaced at least __________
once a day.
Which area of the instrument processing center can contain both contaminated and sterilized instruments?
Sterilization area
Patient-to-patient cross-contamination may occur when a patient closes his or her lips around which of the following?
Saliva ejector tip
Which of the following may be used for surface disinfectant disinfection in the dental office?
Hydrogen peroxide formulas
Instruments must be absolutely dry or they will rust or have an ash layer when using which type of sterilization process?
Unsaturated chemical vapor
How often should sodium hypochlorite disinfectant be prepared?
Daily
Which method of sterilization is used to sterilize unpackaged instruments using a short exposure time?
Flash sterilization
_____ is defined as the absence of pathogens, or disease-causing microorganisms.
Asepsis
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