CDC Clinical Operations & Patient Care 2 — Questions and Answers
Question 1: A dental consultant reviewing infection control protocols notices staff are reprocessing heat-sensitive instruments using only high-level disinfection rather than sterilization. What is the correct standard?
- High-level disinfection is acceptable for semi-critical items
- All instruments that penetrate soft tissue must be sterilized (Correct answer)
- Chemical vapor sterilization is the only acceptable method
- Heat-sensitive instruments may be used without reprocessing if single-use packaging is intact
Correct answer: All instruments that penetrate soft tissue must be sterilized
Instruments that penetrate soft tissue or bone are classified as critical items and must be sterilized, not merely disinfected.
Question 2: Under the ADA and CDC guidelines, what is the recommended approach for managing dental unit waterlines to prevent biofilm contamination?
- Flush waterlines for 20–30 seconds at the start of each day and between patients (Correct answer)
- Replace all waterline tubing monthly regardless of contamination levels
- Use sterile saline for all procedures; tap water is never acceptable
- Waterlines only require treatment if a patient reports illness
Correct answer: Flush waterlines for 20–30 seconds at the start of each day and between patients
Flushing waterlines for 20–30 seconds at the start of the day and between patients helps reduce microbial counts from stagnant water.
Question 3: A patient presents with uncontrolled hypertension (BP 180/110 mmHg) for a routine extraction. What is the most appropriate course of action?
- Proceed with treatment after administering nitrous oxide for relaxation
- Refer the patient to their physician and postpone elective treatment (Correct answer)
- Use epinephrine-free local anesthetic and complete the extraction
- Reduce the procedure time and complete the extraction quickly
Correct answer: Refer the patient to their physician and postpone elective treatment
A blood pressure of 180/110 mmHg represents Stage 2 hypertension, and elective dental procedures should be deferred until the patient's blood pressure is controlled by their physician.
Question 4: Which of the following best describes the role of a dental consultant when reviewing a claim for crown placement on a tooth with a periapical abscess?
- Approve the crown since it restores function
- Request radiographic evidence showing endodontic treatment or extraction prior to crown placement (Correct answer)
- Deny the claim as abscessed teeth cannot support crowns
- Approve conditionally if the patient signs a waiver
Correct answer: Request radiographic evidence showing endodontic treatment or extraction prior to crown placement
A crown placed on a tooth with an active periapical abscess is clinically inappropriate without prior definitive treatment; the consultant should request evidence of resolved infection.
Question 5: OSHA's Bloodborne Pathogens Standard requires dental employers to offer hepatitis B vaccination to which employees?
- Only employees who perform surgical procedures
- All employees hired within the last 12 months
- All employees with occupational exposure to blood or OPIM at no cost to the employee (Correct answer)
- Employees who request it, with cost shared between employer and employee
Correct answer: All employees with occupational exposure to blood or OPIM at no cost to the employee
OSHA mandates that employers offer hepatitis B vaccination at no cost to all employees with occupational exposure to blood or other potentially infectious materials (OPIM).
Question 6: A patient undergoing a lengthy restorative procedure reports symptoms of syncope (lightheadedness, pallor, diaphoresis). What is the immediate first step?
- Administer oxygen via nasal cannula at 6 L/min
- Place the patient in Trendelenburg position and loosen restrictive clothing (Correct answer)
- Terminate the procedure and call 911 immediately
- Administer 0.9 mg sublingual nitroglycerin
Correct answer: Place the patient in Trendelenburg position and loosen restrictive clothing
Vasovagal syncope is managed by placing the patient supine with legs elevated (Trendelenburg) to restore cerebral perfusion and loosening any restrictive clothing.
Question 7: According to best practices in clinical documentation, when must a dental office correct an error in a patient's paper chart?
- Draw a single line through the error, initial and date it, and write the correct information (Correct answer)
- Use correction fluid to cover the error and write the correct entry
- Remove the page and replace it with a corrected version
- Leave the error uncorrected and add a separate addendum page only
Correct answer: Draw a single line through the error, initial and date it, and write the correct information
The legally and ethically correct method is to draw a single line through the error, initial and date it, then record the correct information — never obliterate original entries.
CDC Clinical Operations & Patient Care 2
A dental consultant reviewing infection control protocols notices staff are reprocessing heat-sensitive instruments using only high-level disinfection rather than sterilization.
What is the correct standard?