Dental Assistant Quiz 4 Flashcards
To minimize environment chemical contamination, the operator should
Follow all applicable osha and cdc guidelines
Best method of preventing transmission of the hepatitis c virus in dhcp
Use of PPE
Allergies to bananas, avocados and kiwi may indicate a possible allergy to
Latex
Regarding bacterial contamination of dental unit waterline
Bacteria can be transmitted to patient through waterlines
The best method of preventing herpetic conjuntivitis amond dhcp is to
Wear protective eyewear
Coming into contact which of the following most likely to cause spread of herpes virus
Lesion
Which of the following would not be considered an exposure incident?
Puncture with an unused needle (pinchar con una aguja no utilizada)
When steam autoclaving instrument packing minimum recommended temperature is
250 degrees F (121 degrees C) for 30 min
During sterilization, if steam condensation is on the edge of the autoclave door, this could indicate
A defective gasket (una junta defectuosa)
Cleaning surfaces prior to disinfection is to
Reduce the concentration of pathogens
Tuberculocidal activity occurs with approach
Disinfection
When should HBV vaccinations be offered to new employees?
Within 10 days of hire
Which of the following is classified by OSHA as a hazardous material because it causes burns and possible sloughing of tissue?
Acid etch solution
Which of the following must be done if a health care worker receives a puncture from a contaminated sharp?
The source patient should be informed of the incident and asked to be tested for HIV, HBV and HCV infection
Which of the following documents is required of all dental offices using hazardous chemicals?
Hazard communication plan
Which type of microorganism is MOST difficult to destroy?
Bacterial spores
In MOST dental settings, health care workers are at greatest risk of contracting
Hepatitis A
Mask used routinely by dental professionals are able to
Filter out the majority of airborne particles
Which of the following is considered a bloodborne virus?
Hepatitis C
Infection with Mycobacterium tuberculosis requires
An immunocompromised host
Which of the following is considered a noncorrosive form of sterilization?
Dry heat
What method does the CDC recommend to determine that sterilization has occurred?
Use of biological monitors
Two substances that commonly INACTIVATE many chemical disinfectants are
Soap and Organic Matter
Which of the following is an effective method for reducing the amount of aerosolization in the dental operatory?
High volume evacuation
The CDC recommends that a disinfectant
Being tuberculocidal
The OSHA Bloodborne Pathogens Standard requires that all employees at risk of occupational exposure receive a training program on bloodborne pathogens at least
Annualy
Which of the following is a possible side effect a of exposure to glutaraldehyde
Severe eye irritation
The BEST method to determinate if a product contains a specific hazardous chemical is to
Review the product’s MSDS
When working with 2% or 3.4% glutaraldehyde the DHCP should
Work in a well ventilation area
A person who is immune to hepatitis B would develop
Hepatitis D
Contaminated surgical instruments used positive patient should be HIV
Immersed in glutaraldehyde for 10 minutes
Washing hands with antimicrobial hand soap will
Reduce the number of microbes
PPE (personal protective equipment) is appropriate for dental healthcare training personnel because
Gloves and mask provide protection spatter injuries of blood and/or saliva
What mode of transmission is MOST likely the spread of tuberculosis
Respiratory aerosol
Operatory safety is improved with regard to sterile/bagged critical instruments by
Packaging prior to sterilization
How often should CHEMICAL indicators be used in sterilization cycles?
At every cycle
How often does CDC recommend that sterilizers be monitored for proper functioning?
At least weekly
Which of the following is indicated for use as surface disinfectants?
Alkaline glutaraldehyde
The PRIMARY problem with the daily use of sodium hypochlorite solution (cloro) as a surface disinfectant is that
May cause corrosion of metals
Who is considered responsible for ensuring that an employee uses appropriate personal 45. A protective equipment?
The employer
An assistant receives a needle-stick from sterile needle. According to the OSHA Bloodborne Pathogens Standard, this
Is not considered and exposure incident
According to OSHA Bloodborne Pathogens Standard, an employee’s medical record must include
Whether or not the employee refused the HBV vaccination
A dental assistant was recently suspected of having activate Mycobacterium tuberculosis and was referred to a physician for further evaluation. The dental assistant may return to work after the dental assistant has
Been declared by a physician as being no longer infectious
Appropriate infection control procedures do NOT include
Bulk dispensing of disposable supplies
What is the primary function of the nitrous oxide / oxigen scavenging system?
Helps remove waste gas from the operatory
The principal reason for using barriers is that they
Reduce the possibility of aerosol cross to contamination
A method to improve dental unit water quality includes
Controlling biofilms in tubing
Which of the following is a true statement about hepatitis B?
Can be transmitted from patient to patient
How should instrument packages be loaded into the autoclave?
Loosely to allow air circulation
What is the BEST method to prevent rust on instruments during dry heat sterilization?
Dry instruments before placing in sterilizer
When selecting a surface disinfectant, the product must be registered by which agency?
EPA
Which of the following is true regarding use of alcohol as a cleaner/disinfectant?
It is not recommended because of its rapid evaporation
What step should be taken to minimize the bio hazard associated with using a 2%-3.4% glutaraldehyde solution
Wear utility gloves and protective eyewear
What is the minimum length of time that OSHA recommended that safety training records be kept?
3 years
Studies have indicated that spontaneous abort and fetal loss have occurred when one or both partners have an occupational exposure to
Mercury
Release of toxic fumes is a PRIMARY hazard of which of the following?
Methylmethacrylate monomers
Monómeros de metacrilato de metilo
The MOST desirable characteristics of an evacuee system cleaner is
Low-sudsing
All of the following may be symptoms of active tuberculosis EXCEPT
Skin rash
Erupción cutánea
Antiseptics differ from disinfectants in that ls the antiseptics
Are applied onto living tissues
Personal protective clothing for the dental healthcare team should be
Made from fluid proof material
If the patient’s medical history reveals that he is allergic to latex, what type of gloves are BEST to wear during the routine? Treatment of this patient?
Nitrile
Which of the following microorganism is NOT transmitted by a needle stick or cut from contaminated instrument?
HAV hepatitis A
Which of the following is considered an effective method of killing spores?
Unsaturated chemical vapor
Which of the following is considered a DISADVANTAGE in the use of the autoclave as a sterilizing system?
Instruments cutting surfaces and burs may become dull
Surfaces to be disinfected after each patient treatment include all of the following EXCEPT
Dental unit lights
The proper technique for decontaminating operatory surfaces is to
spray- wipe- spray
Rociar -limpiar- rociar
According to the OSHA Hazard Communication Standard, the employer must ensure a safe working environment by providing
Yearly OSHA training
A new at-risk employee initially declines an HBV vaccination. Later the employee request to be vaccinated. What is the employer’s responsibility? The employer
Must pay for the vaccination
The MOST important reason why 2 or 3.4% glutaraldehyde should NOT be used as a surface disinfectant is because it
May damage surfaces
What personal protective equipment should be used when replenishing X-ray processing solutions?
Protective eyewear
Symptoms of an irritant contact dermatitis caused by an allergic reaction to latex commonly includes
Dry, cracked skin
According to the 2003 CDC Guidelines, vaccine induced antibodies decline over time and 60% of persons who initially respond to vaccination will
Lose all antibodies within 10 years
Generally, vaccination for HBV includes three injections with the first two being given
4 week apart
An example of a housekeeping non-critical environmental surface would be
Floor, walls, and sinks
For SURGICAL procedures when hands are not visibly soiled, which of the following decontamination methods is sufficient?
An antimicrobial soap and water
An alcohol-based hand scrub is used after wash hands for which type of procedure?
Extraction
When applied to the skin, an alcohol-based is classified as “rapidly germicidal” if it contain
Triclosan
According to CDC, the minimum time for ROUTINE hand wash is
15 seconds
When hand are visible free of blood or soil, an alcohol-base hand scrub should be used
Before and after each patient
A dental assistant’s natural fingers nails should kept
Shorter than a quarter of an inch
Which is true of disposable face masks? They should
Have a moisture-resistant surface to minimize wicking
Clinical contact barriers should be replaced
Between patients
The fundamental reason for the use of gloves during patient care is that
It provides worker protection
Fever and productive cough are indicative of which of the following conditions?
Tuberculosis
According to CDC to the 2003 CDC Guidelines, the water quality standard for routine dental treatment is
200 cfu/mL
According to the 2003 CDC Guidelines, the water quality standard for surgical procedure is
Sterile water
What is the MOST likely cause of sterilization failure?
Operator error
If the proper length of time is used, which of the following is capable of sterilization heat sensitive items at room temperature by immersion?
Glutaraldehyde
Which of the following organism is MOST resistant to chemical disinfection?
Mycobacterium tuberculosis
Which of the following is acceptable for sterilizing high speed handpiece?
Heat process according to manufacturer’s directions
What does a “positive” sterilization biological is monitor report indicate?
Load was not sterile
The CDC requires periodic verification of proper functioning of sterilizers with which of the following?
Biological monitors
Biological monitors are used to
Validate that the process killed live spores
Which of the following is true of synthetic phenols?
Intermediate-level disinfectants
Prior to disinfection a non porous contaminated surface can be cleaned with
Glutaraldehyde
When should contaminated equipment be decontaminated?
As soon as the patient is dismissed
The major DISADVANTAGE of using sodium hypochlorite as a disinfectant is that it can
Corrode metal
During operatory clean-up, what type of gloves is required by OSHA?
Utility
Contaminated barriers should be discarded while the patient is still seated and the assistant is wearing
Exam gloves
When does the OSHA Bloodborne Pathogens Standard require face masks to be worn
At all times
An example of an engineering control is
OSHA compliance manual
The symbol indicates (*)
A biohazard
The term “standard/universal precautions” means
All disease are standard/universally are dangerous to health care workers
In most dental settings, health care workers are greatest risk of contracting
Hepatitis B
Which of the following is required of a new employee?
She/he should be required to study the OSHA manual within the first 10 days of employment
Which of the following is considered “regulated waste” by the EPA
Used suture needles
If the operator suspects a malfunction in the X-ray equipment, what is the FIRST thing to be done?
Stop using the equipment
When an individual receives a hepatitis B immunization, the substance INJECTED into the body is considered a/an
Antigen
After an employee has received initial employment assignment appropriated training, when must an employer and received make a hepatitis B vaccination available?
Within 10 working days
What must be done when a patient reveals HIV positive status?
The dental team must follow the infection control procedures as applied for all patients
According to the OSHA Bloodborne Pathogens Standard, the dentist/employer must
Develop an exposure control plan
OSHA’s role in the dental office is to protect the
Employee
Is a product contains a hazardous chemical, whose responsibility is it to prepare a MSDS?
Manufacturer
Which of the following is true of HIV infected patient
Should be treated at the end of the day
According to OSHA Bloodborne According to Pathogens Standard, the written exposure control plan must be updated at least
Once a year
Which of the following list the stages of biofilm formation in the correct sequential order?
Initial attachment, accumulation, and release
Which of the following organizations supervises and regulates the practice of dentistry?
State Board of Dentistry
High volume evacuation may be used to
Remove water during cavity preparation
The most common oral manifestation of HIV infection is
Candidiasis
During a fire drill, patients are escorted out of the office. What safety measure must be followed on the way out?
Close doors
If a patient’s medical history reveals that the patient is allergic to latex, which type of gloves is best suited for use during routine treatment of this patient?
Vinyl
Instruments that penetrate a patient’s skin should be:
Sterilized
Which of the following liquids is used in an autoclave to sterilize instruments and supplies?
Distilled water
Which precautions means that all patients are treated as if they are infectious?
Universal
The series of components that lead to infection are referred to as the:
Chain of infection
When the chain of infection is broken a/an:
Infection is prevented from happening
Which agency is a regulating body that enforces requirements that employers must protect their employees from exposure to blood and other potentially infectious materials?
Osha
Which agency regulates manufacturing and labeling of medical devices the and solutions?
FDA
Which agency regulates the disposal of hazardous waste as well as the safety and effectiveness of disinfecting and sterile solutions?
EPA
This type of transmission involves the physical transfer of an agent from an infected person to an uninfected person through direct contact
Contact transmission
The rheostat is used to:
Control the speed of the handpiece
HBV and HIV pose a risk to all medical personnel. Unfortunately, patient infected with either of these contagious diseases are asymptomatic meaning:
They have no symptoms
This solution is a preservative and is used to prevent oxidation and increase the life span of the developing solution.
Elon
Safety guard, utility goves, and commercial acid spill clean-up kit should be employed when handling:
Mercury
