DANB DANB Patient Medical History & Infection Risk Assessment 1 — Questions and Answers
Question 1: Why is obtaining a thorough medical history essential from an infection control perspective?
- It is required only for insurance billing purposes
- It helps identify patients with conditions that may increase infection risk or require special precautions (Correct answer)
- It is only important for patients over 65
- It is required only for surgical procedures
Correct answer: It helps identify patients with conditions that may increase infection risk or require special precautions
A thorough medical history identifies patients with conditions such as immunosuppression, bloodborne infections, or antibiotic requirements that require modified infection control or treatment protocols.
Question 2: Under Standard Precautions, blood and body fluid precautions apply to:
- Only patients who are known to be HIV-positive
- Only patients with visible signs of illness
- All patients regardless of known or unknown infection status (Correct answer)
- Only patients who disclose communicable diseases
Correct answer: All patients regardless of known or unknown infection status
Standard Precautions require treating all patients as potentially infectious regardless of their known diagnosis, because many infections are asymptomatic or undiagnosed.
Question 3: A patient with an active oral herpes (HSV) lesion presents for a routine cleaning. What is the appropriate infection control response?
- Proceed with treatment using standard precautions only
- Postpone elective procedures until the lesion resolves; if urgent, use additional barrier precautions (Correct answer)
- Refuse to treat the patient
- Treat normally — oral herpes is not an infection control concern
Correct answer: Postpone elective procedures until the lesion resolves; if urgent, use additional barrier precautions
Elective dental procedures should be postponed when a patient has an active HSV lesion due to the high risk of transmission; urgent care should proceed with enhanced barrier precautions.
Question 4: Which of the following medical conditions requires an antibiotic prophylaxis consultation with the patient's physician before invasive dental procedures?
- Seasonal allergies
- Certain cardiac conditions at risk for infective endocarditis (Correct answer)
- Type 2 diabetes
- Mild hypertension
Correct answer: Certain cardiac conditions at risk for infective endocarditis
Patients with certain cardiac conditions (such as prosthetic heart valves or a history of infective endocarditis) may require antibiotic prophylaxis before invasive dental procedures per AHA guidelines.
Question 5: A hepatitis B surface antigen (HBsAg)-positive patient presents for dental treatment. The appropriate response is:
- Refuse treatment
- Refer to a hospital setting only
- Treat with standard precautions; no additional precautions are required (Correct answer)
- Ask the patient to reschedule after they are no longer contagious
Correct answer: Treat with standard precautions; no additional precautions are required
Patients who are HBsAg-positive (carriers of hepatitis B) should receive dental treatment using standard precautions, as these precautions are designed to protect against bloodborne pathogen exposure.
Question 6: What is the primary reason dental healthcare workers must be vaccinated against hepatitis B?
- It is required by the CDC for all US residents
- Dental workers are at significant occupational risk of HBV exposure through blood and OPIM contact (Correct answer)
- It is required by dental licensure boards in all states
- HBV can be spread through casual contact
Correct answer: Dental workers are at significant occupational risk of HBV exposure through blood and OPIM contact
Dental workers are at occupational risk of hepatitis B through needlesticks and blood contact, and HBV is the most efficiently transmitted bloodborne pathogen, making vaccination a critical protective measure.
DANB DANB Patient Medical History & Infection Risk Assessment 1
Why is obtaining a thorough medical history essential from an infection control perspective?