WorksheetsInfection Control Derby's
Total questions: 53
Worksheet time: 27mins
Use Case A: 1. Which of the following pathways of desease transmisión is depicted in this case?
•A. Patient to DHCP
•B. DHCP to patient
•C. Patient to patient
•D. Cmmunity to patient
Use Case A: 2. Which of the following modes of desease transmisión is depicted in this case?
•A. Direct contact
•B. Indirect contact
•C. Droplet infection
•D. Airborne infection
Use Case A: 3. What is the source of the microbes in this case?
•A. Patient’s oral cavity
•B. Hygienist’s hands
•C. Contaminated instrument
•D. Dental unit water
Use Case A: 4. In this case, which of the following infection control procedures likely would have prevented disease transmisión?
•A. Using barries
•B. Cleaning the housekeeping surfaces
•C. treating dental unit wáter lines
•D. Wearing proper PPE
Use Case A: 5. Which of the following microorganism types is responsable for Legionnaires’ disease?
•A. Bacterium
•B. Prior
•C. Virus
•D. Fungis
Use Case A: 6. What was the portal of entry of Legionella into the Elder patient’s body?
•A. Breathing in contaminated wáter vapor
•B. Swallowing contaminated wáter
•C. Infiltrating microbes into nonintact mucosa
•D. Splashing of droplets on mucous mebranes
Use Case B: 7. What should Preston the dental hygienist do next?
•A. Scrub the finger using a stiff brush
•B. Squeeze the finger to let out the contaminants
•C. Wash the finger with antimicrobial soap
•D. Immerse the finger in bleach for 1 minute
Case B: 8. Preston, the employee, has sustained a percutaneous injury and may have been exposed to a bloodborne pathogen. In this situation, what is the responsability of his employee according to OSHA?
•A. None; an employee Works at his own risk
•B. Pay for the treatment of any acquired disease
•C. Give the employee the following day off with pay
•D. Arrange for a consultation with a qualified HCP
Case B: 9. Which of the following modes of disease transmisión is depicted in this case
•A. Direct contact
•B. Indirect contact
•C. Droplet infection
•D. Airbone infection
Use Case B: 10. What is the source of the microbes in this case?
•A. Contaminated droplets
•B. Hygienist’s hands
•C. Contaminated instruments
•D. Dental unit water
11. The dental hygienist elects to be tested for bloodborne pathogens (HCV and HIV), and he is informed of the reults by a qualified health care profesional. Which of the following actions is he then required to take?
•A. Inform his employer of the results
•B. Document the results in his emplyee file
•C. inform the CDC and OSHA
•D. None of the above is required
12. According to Osha, which of the following does not need to be included in a dental office’s record keeping?
•A. Employee vaccine declination statements
•B. Records of anual staff trainings on infection control
•C. Log of employee injuries and illnesses
•D. Employees’ Social Security numbers
13. What is the level of risk related to the transmisión of HCV?
•A. High
•B. Moderate
•C. Low
•D. Very low
14. All the following viruses are bloodborne pathogens except:
•A. Human immunodefiency virus
•B. Hepatitis B virus
•C. Hepatitis C virus
•D. Varicella-zoster virus
15. Which term is used for the practice of treating a patient’s blood, body fluids, nonintact skin, and mucous membranas as potentially infectiuos?
•A. Standard precautions
•B. Pervasive precautions
•C. Universal precatious
•D. protective precautions
16. Glutaraldehyde is a high-level disinfectant; therefore it can be used to sterilize critical ítems
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE; the second statement is FALSE
•D. The first statement is FALSE; the second statement is TRUE
17. A dental health care employee has occupationally acquired tuberculosis. Which of the following modes of disease transmisión would be implicated in this case?
•A. Direct contact
•B. Indirect contact
•C. Droplet infection
•D. Airborne infection
18. Which of the following methods Will achieve sterilization?
•A. Dry heat at 320°F for 50 minutes
•B. Steam autoclave at 200°F for 30 minutes
•C. Chemical vapor at 270°F for 20 minutes
•D. Ethylene oxide gas for 5 hours.
19. The cdc recommends disinfecting clinical contact that is tuberculocidad, because mycobacterium tuberculosis var. Bovis is a resistant microbe and all other, les resistant microbes would also be killed.
•A. Both the statement and the reason are TRUE
•B. Both the statement and the reason are FALSE
•C. The statement is TRUE, but the reason is FALSE
•D. The statement is FALSE, but the reason is TRUE.
20. What is the ultimate goal of disease prevention in the oral health care (ohc) setting?
•A. Prevent pathogens from entering the OCH setting
•B. Sterilize clinical contact surfaces between patients
•C. Prenvent OHC related infectious and diseases
•D. Eliminate all microbes in the OHC setting
21. alcohol-based sanitizers may be used instead of handwashing when no visible soil is present, because hand sanitizers have been found to be at least as effective as handwashing.
•A. Both the statement and the reason are TRUE
•B. Both the statement and the reason are FALSE
•C. The statement is TRUE, but the reason is FALSE
•D. The statement is FALSE, but the reason is TRUE
22. All the following are TRUE related to using instruments cassettes except:
•A. Unwrap the cassette in view of the patient
•B. Sterilized cassettes are used as instrument trays
•C. Exposure to sharps is decreased
•D. Using cassettes is less time-efficient
23. Many dhcp experience skin problems on their hands related to the use of gloves. In most cases, these problems are caused by an allergic response to latex proteins in gloves
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE, the second statement is FALSE
•D. the first statement is FALSE; the second statement is TRUE
24. Which of the following indicators is used to determine sterility?
•A. External Indicator
•B. Integrated indicator
•C. Biologic indicator
•D. Chemical indicator
25. Which of the following is osha primarily concerned with protecting?
•A. Employee
•B. Employer
•C. Patient
•D. Community
26. Which of the following characteristics is an advantage of chemical vapor sterilization?
•A. A ventilation system is not required
•B. It can sterilize closed containers
•C. Extra drying time is not needed
•D. It is the least costly method of sterilization
27. All the following are vaccine-preventable illness except.
•A. Hepatitis B virus (HBV)
•B. Hepatitis A virus (HAV)
•C. Hepatitis C virus (HCV)
28. Which of the following statements best characterizes the resident flora on hands?
•A. They colonize the deeper layers of the skin
•B. They are less resistant to removal by handwashing
•C. They are the primary source of disease transmisión
•D. They are associated with allergic contact dermatitis
29. Which of the following statements is true regarding the handling of regulated infectious waste?
•A. Containers of infectious waste must be identified with the biohazard symbol
•B.Infectious waste can be disinfected and then combined with the regular trash.
•C.Infectious waste does not be sterilized before leaving the oral health care setting
•D. Infectious waste does not require any speacial handling in some states.
30. Examination gloves to be used intraorally should be donned immediately prior to:
•A. Dental operatory setup
•B. Unwrapping the cassette
•C. Taking the blood pressure
•D. Entering the patient’s mouth
31.Which of the following packaging materials should not be used with chemical vapor sterilization?
•A. Paper wrap
•B. Paper pouches
•C. Plastic pouches
•D. Cloth wrap
32. Which of the following characteristics best describes the use of protective barriers for clinical contact surfaces?
•A. They need to be changed only when visibly soiled
•B. They should be used after sterilization of the Surface
•C. They are ideally used for surfaces that are difficult to desinfect
•D. They decrease the cost of maintaining asepsis
33. All the following characteristics describe epa-registered intermediate-level disinfectants except:
•A. Must inactivate Mycobacterium tuberculosis var, bovis
•B. Will kill vegetative bacteria and most viruses
•C. Must be used on surfaces with visible blood
•D. Will achieve sterilization if long contact time is used
34. All dhcp who are vaccinated for hepatitis b Will become immune to the virus. Therefore, the cdc does not recommend booster injections.
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE; the second statement is False
•D. The first statement is FALSE; the second statement is TRUE
35. Face shields provide máximum coverage for the face and protection from spatter during oral health care procedures. Therefore, wearing a facemask is not required when using a fase shield.
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE; the second statement is False
•D. The first statement is FALSE; the second statement is TRUE
36. Which of the following pathogens has been identified in the biofilm that accumulates inside dental unit wáter lines?
•A. Pseudomonas aeruginosa
•B. Neisseria meningitidis
•C. Candida albicans
•D. Treponema pallidum
37. Which of the following governmental agencies is responsable for approving the safety and affectiveness of small office sterilizers and ultrasonic units?
•B. FDA
•B. FDA
•C. CDC
•D. OSHA
38. An individual should be tested for antibodies to hbv 1 to 2 months after receiving the last doce of the hepatitis b vaccine. The reason for this testing is that not all individuals Will seroconvert
A. Both statements are TRUE
B. Both statements are FALSE
C. The first statement is TRUE; the second statement is FALSE
D. The first statement is FALSE; the second statement is TRUE
39. In which of the following methods are biologic monitors containing spores of geobacillus stearothermophilus used to verify sterilization?
•A. steam autoclave
•B. dry-heat oven
•C. Ethylene oxide gas
•D. Rapid heat transfer
40. Which of the following is not considered a safe work practice control?
•A. Using an instrument casette instead of autoclave bags
•B. Hand scrubbing instruments using exam gloves
•C. Using a one-banded technique to recap needles
•D. Instrumenting a tooth using a fulcrum one tooth away
41. Sterilization failure is most often caused by:
•A. The autoclave not working properly
•B. Improper packaging materials used
•C. Overloading the office sterilizer
•D. Inadecuate sterilization time
42. A chemical indicator is used on the outside of packaging to identify the ítems that have been processed through the sterilizer. Tyhe chemical indicator changes color when the packages are sterile.
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE; the second statement is FALSE
•D. The first statement is FALSE; the second statement is TRUE
43. Dental handpieces are considered semicritical ítems, and therefore they can be disinfected by wiping with an intermediate-level disinfectant.
•A. Both statements are TRUE
•B. Both statements are FALSE
•C. The first statement is TRUE; the second statement is FALSE
•D. The first statement is FALSE; the second statement is TRUE
44. What is the máximum level of bacteria that the cdc has recommended for wáter exiting dental unit waterlines?
•A. 400 CFU/mL
•B. 500 CFU/mL
•C. 600 CFU/mL
•D. 700 CFU/mL
45. In most cases , what is the number of bacteria in the wáter exiting from an untreated dental unit watr line?
•A. lower tan in drinking wáter
•B. The same as in drinking wáter
•C. Slightly higher than in drinking wáter
•D. Much higher tan in drinking water
46.All the following materials are considered regulated infectious waste except:
•A. Extracted tooth
•B. Blood-soaked gauze
•C. Anesthetic needle
•D. Saliva coated exam gloves
47. The primary reason for patients to perform a preprocedural rinse before undergoing oral health care is to:
•A. Remove malodorous breath
•B. Remove adherent food debris
•C. Reduce the microbes in aerosols
•D. Eliminate oral infections
48. Using biologic indicators to test sterilizing equipment, biologic monitors should be used once every:
•A. Day
•B. week
•C. Month
•D. Quarter
49. All the following methods inhibit the formation of biofilm in dental unit wáter lines except:
•A. Flushing wáter lines for 2 minutes
•B. independent wáter reservoir
•C. Chemical disinfection of wáter lines
•D. Sterile wáter delivery systems
50.The practice of using a cotton roll taped to the bracket tray for wiping instruments, instead of a gauze square wrapped around the finger, is considered by osha as a/an:
•A. Standard bioburden control
•B. Safe practice control
•C. Engineering control
•D. Work practice control
51. Considering the Covid-19 pandemic, which of the following masks is now recommended for use during aerosion generating procedures
•A. N95
•B. Level 1
•C. Level 2
•D. Level 3
52. Based on the cdc interim infection prevention and control recommendations for Patients suspected of Covid-19 the new definition od fever is:
•A. 99.0°F or higher
•B. 99.5°F or higher
•C. 100.0°F or higher
•D. 100.4°F or higher
53. A patient presenting for a routine prophylaxis has symtoms consistent with a respiratory infection (cough, low grade fever), but has not been tested for covid-19. the patient says that they Will be okay, it’s probably just a “cold” and to proceed with treatment. Which of the following actions should a dental hygienist take?
•A. Provide patient care using standard precautions
•B. Use an isolation room and respiratory precautions
•C. Dismiss and reschedule patient for a future time
•D. Wear a N95 respirator while providing care.
