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DANB CDIPC practice questions

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Question 1Infection Prevention and Control Program Management and Leadership

Who bears ultimate legal responsibility for the dental practice's infection prevention and control program?

  1. The office manager
  2. The dental hygienist
  3. The employing dentist Correct answer.
  4. The infection control coordinator

Explanation

The employer, typically the practice owner or employing dentist, is accountable for compliance with OSHA and CDC requirements. Duties may be delegated to an infection control coordinator, but accountability remains with the employer.

Question 2Infection Prevention and Control Program Management and Leadership

How often must a dental practice's written exposure control plan be reviewed and updated?

  1. At least annually Correct answer.
  2. Only after an exposure incident
  3. Only when a new employee is hired
  4. Every five years

Explanation

The plan must be reviewed at least yearly and whenever new tasks or procedures change employee exposure risk. The review must also reflect changes in technology or job classifications.

Question 3Infection Prevention and Control Program Management and Leadership

Within what timeframe must an employer offer the hepatitis B vaccination to a newly hired employee with occupational exposure?

  1. Within 30 days of the first paycheck
  2. Within 24 hours of the first exposure incident
  3. Only after the employee requests it in writing
  4. Within 10 working days of assignment Correct answer.

Explanation

The vaccine must be offered within 10 working days of initial assignment at no cost to the employee. Exceptions apply when the employee has documented prior vaccination or antibody testing.

Question 4Infection Prevention and Control Program Management and Leadership

How often must employees with occupational exposure receive bloodborne pathogens training?

  1. Every two years
  2. Only when a new procedure is introduced
  3. Only after an exposure incident
  4. At initial assignment and annually Correct answer.

Explanation

Training is required at the time of initial assignment and at least once every 12 months thereafter. It must cover the exposure control plan, transmission, PPE, and post-exposure procedures.

Question 5Infection Prevention and Control Program Management and Leadership

When should dental health care personnel perform hand hygiene during a routine appointment?

  1. Before and after glove use Correct answer.
  2. Only after removing gloves
  3. Only before gloving
  4. Only when hands are visibly soiled

Explanation

Hand hygiene is performed before donning gloves and immediately after removing them. Gloves do not substitute for hand hygiene, and alcohol-based rub is acceptable when hands are not visibly soiled.

Question 6Infection Prevention and Control Program Management and Leadership

When should a sharps container be replaced?

  1. When it is completely full
  2. At the end of each day
  3. Only when a needle protrudes
  4. At about three-quarters full Correct answer.

Explanation

Containers are replaced when they reach the fill line, typically about three-quarters full. Overfilling increases the risk of percutaneous injury during disposal.

Question 7Infection Prevention and Control Program Management and Leadership

What is the minimum recommended frequency for biological (spore) testing of a dental sterilizer?

  1. Daily
  2. Weekly Correct answer.
  3. After every load
  4. Monthly

Explanation

Biological monitoring with spores is performed at least weekly for each sterilizer. Every load is also checked with chemical and process indicators, which do not replace spore testing.

Question 8Infection Prevention and Control Program Management and Leadership

How must safety data sheets for hazardous chemicals be made available in the dental office?

  1. Kept only in the sterilization area
  2. Readily accessible to employees Correct answer.
  3. Stored at the dentist's home office
  4. Locked in the office manager's file

Explanation

Employees must be able to reach safety data sheets during their work shift without delay. The hazard communication program also requires labeling and training on the chemicals used.

Question 9Infection Prevention and Control Program Management and Leadership

After a needlestick injury, when must the employer make a confidential medical evaluation available to the exposed employee?

  1. Within 24 hours only if symptoms appear
  2. Within 10 working days of the incident
  3. Only after the source patient tests positive
  4. Promptly, at no cost to the employee Correct answer.

Explanation

Post-exposure evaluation and follow-up must be provided promptly after the incident, confidentially and at no charge. It includes source evaluation, counseling, and consideration of post-exposure prophylaxis.

Question 10Infection Prevention and Control Program Management and Leadership

How long must an employer keep an employee's medical records, including hepatitis B vaccination status?

  1. Duration of employment plus 7 years
  2. Three years
  3. Duration of employment plus 30 years Correct answer.
  4. Five years

Explanation

Employee medical records are retained for the duration of employment plus 30 years. Training records are kept for three years, which is a different retention rule.

Question 11Infection Prevention and Control Program Management and Leadership

Which detail must be entered in the sharps injury log for a percutaneous exposure?

  1. The employee's social security number
  2. The patient's insurance information
  3. Device type and brand Correct answer.
  4. The name of the treating physician

Explanation

The sharps injury log records the type and brand of device, the department or work area, and an explanation of how the incident occurred. Entries must protect employee confidentiality.

Question 12Infection Prevention and Control Program Management and Leadership

An employee completes the hepatitis B vaccine series but post-vaccination testing shows no immunity. What is the appropriate next step?

  1. Permanent transfer to non-clinical duties
  2. No further action is required
  3. Immediate termination of employment
  4. Counseling and possible revaccination Correct answer.

Explanation

A non-responder should be counseled and evaluated for a second vaccine series or other follow-up. The employee should also be informed of susceptibility and precautions during exposure.

Question 13Infection Prevention and Control Program Management and Leadership

How often must an employee who is required to wear a tight-fitting respirator be fit tested?

  1. Every six months
  2. Every two years
  3. At least annually Correct answer.
  4. Only at the time of hire

Explanation

Annual fit testing is required for tight-fitting respirators, and it must be repeated when facial changes or a different respirator model affect the seal. Medical evaluation and training are also required.

Question 14Infection Prevention and Control Program Management and Leadership

What is the CDC-recommended maximum heterotrophic bacterial count for dental unit water used in routine, non-surgical care?

  1. 100 CFU/mL
  2. 50 CFU/mL
  3. 500 CFU/mL Correct answer.
  4. 2,000 CFU/mL

Explanation

Non-surgical dental unit water should contain no more than 500 CFU/mL of heterotrophic bacteria. Practices monitor waterlines and use treatment or flushing protocols to maintain that level.

Question 15Infection Prevention and Control Program Management and Leadership

Which microorganism is used in the biological indicator for a steam sterilizer?

  1. Geobacillus stearothermophilus Correct answer.
  2. Bacillus atrophaeus
  3. Pseudomonas aeruginosa
  4. Mycobacterium tuberculosis

Explanation

Steam sterilizers are monitored with spores of Geobacillus stearothermophilus, which are highly resistant to moist heat. Bacillus atrophaeus is used for dry heat and ethylene oxide monitoring.

Question 16Infection Prevention and Control Program Management and Leadership

Why must instruments be cleaned of debris before they are placed in a sterilizer?

  1. Cleaning replaces weekly spore testing
  2. Only visible blood needs to be removed
  3. Debris shields microbes from steam Correct answer.
  4. Cleaning shortens the sterilization cycle

Explanation

Organic material can protect microorganisms and prevent the sterilant from contacting all surfaces. Instruments must be cleaned and dried before packaging and sterilization.

Question 17Infection Prevention and Control Program Management and Leadership

How should employee medical records such as vaccination records be maintained?

  1. Posted in the break room for verification
  2. In the patient charting system
  3. In the same file as personnel evaluations
  4. Confidential, in a separate medical file Correct answer.

Explanation

Medical records must be kept confidential and separate from general personnel files. Access should be limited to those with a legitimate need, and employee privacy must be protected.

Question 18Infection Prevention and Control Program Management and Leadership

Standard precautions require infection control measures to be applied to which patients?

  1. Only patients who appear acutely ill
  2. Only patients with a known bloodborne pathogen
  3. All patients, regardless of diagnosis Correct answer.
  4. Only patients in identified high-risk groups

Explanation

Standard precautions are applied to every patient because infection status cannot be determined from appearance or history. They include hand hygiene, PPE, safe injection practices, and safe handling of contaminated items.

Question 19Infection Prevention and Control Program Management and Leadership

Which practice is an example of a work practice control?

  1. Using a self-sheathing needle
  2. Not recapping needles by hand Correct answer.
  3. Placing a sharps container in each operatory
  4. Installing a HEPA filter

Explanation

Work practice controls change how tasks are performed, such as prohibiting two-handed recapping. Engineering controls change or isolate the hazard through device design or equipment.

Question 20Infection Prevention and Control Program Management and Leadership

A dental assistant develops an exudative lesion on the hand. What action is most appropriate?

  1. Allow care if a single pair of gloves is worn
  2. Exclude from direct patient care until healed Correct answer.
  3. Assign only front-desk duties permanently
  4. Allow care if the lesion is covered with a bandage

Explanation

Personnel with exudative lesions or weeping dermatitis should be restricted from direct patient care until the condition resolves. Gloves and bandages do not reliably contain drainage.

Question 21Infection Prevention and Control Program Management and Leadership

A steam sterilizer's weekly biological indicator shows growth. What is the most appropriate immediate response?

  1. Stop use and quarantine the loads Correct answer.
  2. Switch to a chemical indicator for monitoring
  3. Repeat the test and continue using the sterilizer
  4. Discard only the items processed that day

Explanation

A positive biological indicator signals sterilization failure, so the unit is removed from service and all loads since the last negative test are quarantined. The sterilizer is repaired or adjusted, then retested per the manufacturer's instructions.

Question 22Infection Prevention and Control Program Management and Leadership

What must the exposure determination in a written exposure control plan include?

  1. The cost of personal protective equipment
  2. A list of employees who have had a needlestick
  3. Names of patients known to carry bloodborne pathogens
  4. Job classifications and tasks with exposure risk Correct answer.

Explanation

The exposure determination lists all job classifications and tasks in which employees may be exposed, without regard to PPE use. It is prepared before the plan is implemented and updated as duties change.

Question 23Infection Prevention and Control Program Management and Leadership

When is a dental practice required to establish a written respiratory protection program?

  1. Only during a community tuberculosis outbreak
  2. Only when an employee requests a respirator
  3. Whenever respirators are required Correct answer.
  4. Whenever the office treats pediatric patients

Explanation

A written program is required whenever respirators are necessary to protect employees, including medical evaluation, fit testing, and training. Voluntary use of filtering facepieces carries lighter requirements.

Question 24Infection Prevention and Control Program Management and Leadership

After an exposure incident, the source patient refuses to consent to bloodborne pathogen testing. What should the employer do?

  1. Inform the exposed employee to seek testing on their own
  2. Close the case because no source information is available
  3. Document the refusal and proceed with employee evaluation Correct answer.
  4. Test the source patient's blood without consent

Explanation

The employer documents the refusal and still provides the exposed employee with confidential medical evaluation and follow-up. Local law may provide a process for source testing when consent cannot be obtained.

Question 25Infection Prevention and Control Program Management and Leadership

Which activity best demonstrates ongoing evaluation of an infection prevention and control program?

  1. Relying on staff self-report of compliance
  2. Reviewing the program only after a citation
  3. Auditing compliance and correcting gaps Correct answer.
  4. Filing the written program in a binder

Explanation

Program evaluation uses measurable indicators such as audits, observation, and monitoring data to identify gaps and verify corrective actions. A written document alone does not show that practices are effective.

Question 26Infection Prevention and Control Program Management and Leadership

Who holds ultimate responsibility for ensuring that a dental practice's infection prevention and control program is implemented and enforced?

  1. The dentist who owns the practice Correct answer.
  2. The front office manager
  3. The most senior dental assistant on staff
  4. The designated infection control coordinator

Explanation

The employer bears the legal duty to establish, implement, and enforce the infection prevention and control program. Specific tasks may be delegated to an infection control coordinator, but accountability cannot be transferred.

Question 27Infection Prevention and Control Program Management and Leadership

Within what time frame after initial assignment must an employer offer the hepatitis B vaccination to an employee with occupational exposure to blood?

  1. Within 10 working days of the assignment Correct answer.
  2. Within 24 hours of the assignment
  3. Within 30 calendar days of the assignment
  4. Within 90 days of the assignment

Explanation

The Bloodborne Pathogens Standard requires the vaccine series to be made available within 10 working days of initial assignment to tasks with exposure risk. The offer must be at no cost and during working hours, and the employee may decline in writing.

Question 28Infection Prevention and Control Program Management and Leadership

How long must an employer retain employee infection control training records?

  1. For the duration of employment plus 30 years
  2. For one year after the training session
  3. For three years after the training session Correct answer.
  4. Until the employee's next annual review

Explanation

Training records must be kept for three years from the date the training occurred. The longer retention period of employment plus 30 years applies to medical records, not training records.

Question 29Infection Prevention and Control Program Management and Leadership

Which type of sterilizer monitoring confirms that the correct temperature, pressure, and exposure time were achieved during a cycle?

  1. Process challenge device monitoring
  2. Biological monitoring
  3. Chemical indicator monitoring
  4. Mechanical monitoring Correct answer.

Explanation

Mechanical monitoring uses gauges, displays, and printouts to verify cycle parameters such as temperature, pressure, and time. Chemical indicators respond to one or more conditions, and biological indicators use spores to verify lethality.

Question 30Infection Prevention and Control Program Management and Leadership

A dental practice begins using a new EPA-registered surface disinfectant. Which action should be taken before staff use the product?

  1. Train staff and review the safety data sheet Correct answer.
  2. File the product label in the office manager's desk drawer
  3. Post the manufacturer's marketing brochure in the sterilization area
  4. Ask the sales representative to demonstrate the product once

Explanation

The hazard communication program requires that a safety data sheet be available and that employees be trained on hazards and safe use before they work with a new chemical. Training must be understandable and occur at the time of initial assignment.

Question 31Infection Prevention and Control Program Management and Leadership

An audit finds that hand hygiene compliance among clinical staff is 50 percent. Which response best reflects sound program management?

  1. Post a memo reminding staff of the policy and take no further action
  2. Identify barriers, retrain staff, and re-audit Correct answer.
  3. Reassign all hand hygiene duties to the sterilization technician
  4. Wait six months and repeat the audit to confirm the finding

Explanation

A compliance gap calls for root-cause review, targeted education, and follow-up measurement to confirm improvement. Monitoring without intervention does not correct the deficiency.

Question 32Infection Prevention and Control Program Management and Leadership

A dental assistant is hired to perform tasks that involve exposure to blood. What must occur before the assistant begins these tasks?

  1. The assistant must receive training on the exposure control plan Correct answer.
  2. The assistant must complete a tuberculosis skin test
  3. The assistant must sign a waiver of bloodborne pathogen training
  4. The assistant must observe three sterilization cycles

Explanation

Training on the exposure control plan must be provided at no cost and during working hours before the employee is assigned tasks with exposure risk. Annual refresher training follows thereafter.

Question 33Infection Prevention and Control Program Management and Leadership

What is the primary purpose of conducting a periodic review of a practice's written infection prevention and control program?

  1. To determine which staff members should be disciplined
  2. To create a record for the local health department
  3. To satisfy the practice's malpractice insurance carrier
  4. To keep policies current with regulations and practice Correct answer.

Explanation

Reviewing the program at planned intervals and whenever procedures change keeps written policies aligned with current regulations, published guidance, and actual office practice. It is a quality improvement activity rather than an insurance or disciplinary exercise.

Question 34Infection Prevention and Control Program Management and Leadership

A hygienist has been observed on several occasions not wearing protective eyewear. What is the most appropriate management response?

  1. Ignore the behavior because the hygienist wears prescription glasses
  2. Document the lapse, retrain, and monitor compliance Correct answer.
  3. Reassign the hygienist to non-clinical duties permanently
  4. Send a general memo to the entire staff about eyewear

Explanation

Repeated noncompliance is handled through documented observation, focused retraining, and follow-up monitoring, escalating to the practice's disciplinary process if it continues. Everyday prescription glasses are not equivalent to protective eyewear with side shields.

Question 35Infection Prevention and Control Program Management and Leadership

Which statement describes the employer's responsibility for personal protective equipment in the dental office?

  1. The employer provides appropriate PPE at no cost to employees Correct answer.
  2. The employer supplies PPE only after a probationary period
  3. PPE is provided only to employees who request it in writing
  4. Employees purchase their own gloves and masks from an approved vendor

Explanation

The employer must provide, maintain, and pay for PPE needed to protect employees from occupational exposure, in sizes that fit properly. Cost and availability cannot be allowed to become barriers to use.

Question 36Infection Prevention and Control Program Management and Leadership

A national public health agency issues updated infection prevention recommendations. What is the most appropriate leadership action?

  1. Evaluate them and revise written policies as needed Correct answer.
  2. Continue current practice until the manufacturer issues guidance
  3. Adopt the recommendations only if they reduce supply costs
  4. Wait until a regulatory inspection requires the change

Explanation

Program leadership includes reviewing new guidance, judging how it applies to the practice, and updating written policies and staff training accordingly. Waiting for an inspection or a vendor leaves the practice out of step with current standards.

Question 37Infection Prevention and Control Program Management and Leadership

A manufacturer claims a new device eliminates the need for sterilization monitoring. What is the most appropriate response?

  1. Document the claim in the policy manual and adopt the device
  2. Ask the sales representative to sign a compliance statement
  3. Purchase the device to reduce supply costs
  4. Request validation data and continue required monitoring Correct answer.

Explanation

Marketing claims do not override the requirement to monitor sterilization cycles, and proposed changes should be judged on validation and published evidence. Monitoring continues unless and until a change is supported by data and appropriate professional guidance.

Question 38Infection Prevention and Control Program Management and Leadership

A boil-water advisory is issued for the community where a dental practice is located. Which action is most appropriate for patient care?

  1. Disinfect the dental unit waterlines with an algaecide and resume care
  2. Continue routine care after flushing the dental unit lines for two minutes
  3. Use an alternative water source and follow public health guidance Correct answer.
  4. Resume care once the office water is boiled and cooled by staff

Explanation

During a boil-water advisory the municipal supply cannot be assumed safe, so the practice should use an alternative water source for patient care and follow the advisory's instructions. Routine waterline treatment and flushing do not reliably address the organisms of concern during an advisory.

Question 39Infection Prevention and Control Program Management and Leadership

After a practice changes its instrument reprocessing workflow, which measure best confirms that the new process is working as intended?

  1. A staff satisfaction survey about the new workflow
  2. The number of instrument sets processed per day
  3. Biological monitoring results and infection outcome review Correct answer.
  4. A one-time visual inspection of the sterilization area

Explanation

Effectiveness is judged by objective process verification, such as ongoing biological monitoring, together with review of clinical outcomes. Appearance, volume, and staff opinion do not demonstrate that instruments are sterile.

Question 40Infection Prevention and Control Program Management and Leadership

What is the most reliable basis for selecting a disinfectant for a specific clinical situation?

  1. Its popularity among practices in the same city
  2. Its cost per gallon compared with competing products
  3. Its EPA-registered claims for the intended use Correct answer.
  4. Its fragrance and ease of use reported by staff

Explanation

Selection should match the product's EPA-registered label claims and required contact time to the organisms and surfaces involved. Cost, scent, and market popularity are secondary considerations and cannot substitute for validated claims.

Question 41Standard Precautions, Hand Hygiene and Personal Protective Equipment

Standard precautions are based on which principle?

  1. Precautions are used only when blood is visible
  2. Precautions apply only during invasive procedures
  3. Only patients with known infections require protection
  4. All patients are treated as potentially infectious Correct answer.

Explanation

Standard precautions apply to every patient because a patient's infection status may be unknown. They include hand hygiene, appropriate PPE, and safe handling of sharps and contaminated items. The approach is not limited to patients with a known diagnosis or to procedures that produce visible blood.

Question 42Standard Precautions, Hand Hygiene and Personal Protective Equipment

Hand hygiene should be performed at which time in patient care?

  1. Only before putting on gloves
  2. Only after removing gloves
  3. Only when hands are visibly soiled
  4. Before and after every patient contact Correct answer.

Explanation

Hand hygiene is indicated before and after each patient contact, and also after removing gloves. It is not limited to moments when gloves are used or when soil is visible. This timing interrupts transmission between patients and the environment.

Question 43Standard Precautions, Hand Hygiene and Personal Protective Equipment

A dental assistant's hands are visibly soiled with blood. Which hand hygiene method is appropriate?

  1. Alcohol-based hand rub followed by a water rinse
  2. An alcohol-based hand rub used twice
  3. Alcohol-based hand rub only
  4. Soap and water washing Correct answer.

Explanation

When hands are visibly soiled or contaminated with blood or body fluids, wash with soap and water. Alcohol-based hand rubs do not remove organic material and are intended for hands that are not visibly soiled. Washing physically removes soil and reduces organisms.

Question 44Standard Precautions, Hand Hygiene and Personal Protective Equipment

What is the recommended minimum contact time for washing hands with soap and water?

  1. 15 seconds
  2. 10 seconds
  3. 5 seconds
  4. 20 seconds Correct answer.

Explanation

Handwashing should last at least 20 seconds, covering all surfaces of the hands and wrists. Shorter contact times may not allow adequate removal of transient organisms. The time is a minimum, not a target to shorten.

Question 45Standard Precautions, Hand Hygiene and Personal Protective Equipment

Which fingernail practice is acceptable for clinical dental staff?

  1. Long nails if gloves fit tightly
  2. Natural nails kept short and clean Correct answer.
  3. Nail extenders under gloves
  4. Artificial nails with a fresh coat of polish

Explanation

Staff should keep natural nails short and clean because artificial nails, extenders, and long nails can harbor microorganisms and damage gloves. Fresh polish does not make artificial nails acceptable. Glove fit does not correct the contamination risk.

Question 46Standard Precautions, Hand Hygiene and Personal Protective Equipment

What is the recommended practice regarding hand jewelry during patient care?

  1. A watch is allowed if it is waterproof
  2. Rings and watches should be removed Correct answer.
  3. Bracelets may be worn under gloves
  4. A plain ring may be worn if gloves fit over it

Explanation

Rings, watches, and bracelets should be removed because they interfere with hand hygiene and can trap microorganisms under gloves. Waterproof or plain-metal designs do not eliminate that problem. Jewelry-free hands are easier to clean and glove.

Question 47Standard Precautions, Hand Hygiene and Personal Protective Equipment

Which gloves are appropriate for routine dental examinations and treatment?

  1. Utility gloves reused between patients
  2. Sterile surgical gloves for every procedure
  3. Cotton gloves under examination gloves
  4. Single-use medical examination gloves Correct answer.

Explanation

Routine dental care requires single-use medical examination gloves that are changed between patients. Sterile surgical gloves are reserved for surgical procedures, and utility gloves are for cleaning or handling contaminated equipment. Cotton liners are not a substitute for an impermeable barrier.

Question 48Standard Precautions, Hand Hygiene and Personal Protective Equipment

During a procedure, a glove tears. What should the clinician do?

  1. Put a new glove over the torn one
  2. Apply alcohol-based hand rub over the torn glove
  3. Remove both gloves, perform hand hygiene, and don new gloves Correct answer.
  4. Continue until the procedure is finished

Explanation

A torn glove no longer provides a barrier, so both gloves should be removed, hands cleaned, and new gloves applied before continuing. Hand rub over a glove or layering a new glove does not restore a safe barrier. Continuing care exposes the clinician and patient.

Question 49Standard Precautions, Hand Hygiene and Personal Protective Equipment

What should be done immediately after removing examination gloves?

  1. Apply hand lotion
  2. Put on utility gloves
  3. Perform hand hygiene Correct answer.
  4. Wipe hands with a paper towel only

Explanation

Hands may become contaminated during glove removal, so hand hygiene is performed immediately afterward. Lotion is not a substitute for cleaning, and utility gloves are not worn for hand hygiene. A dry paper towel does not disinfect hands.

Question 50Standard Precautions, Hand Hygiene and Personal Protective Equipment

When removing PPE after patient care, which item should be removed first?

  1. Eye protection
  2. Respirator
  3. Gown
  4. Gloves Correct answer.

Explanation

Gloves are the most contaminated item and are removed first, followed by eye protection or face shield, gown, and finally the mask or respirator. Hand hygiene follows removal. Removing the respirator first would contaminate the face and airway.