CIC Environment of Care 3 — Questions and Answers
Question 1: An infection preventionist is reviewing the ICRA (Infection Control Risk Assessment) for a renovation project. Which patient population warrants the most stringent Class IV containment measures?
- Ambulatory outpatients in a clinic
- Post-surgical patients in a general ward
- Severely immunocompromised hematology/oncology inpatients (Correct answer)
- Patients in a skilled nursing facility
Correct answer: Severely immunocompromised hematology/oncology inpatients
Severely immunocompromised patients (e.g., stem cell transplant recipients) face the highest risk from construction-related fungal exposure and require Class IV ICRA measures.
Question 2: Which disinfectant is the preferred choice for environmental surfaces contaminated with Clostridioides difficile spores?
- Quaternary ammonium compound (quat)
- Alcohol-based product (70% ethanol)
- EPA-registered sodium hypochlorite (bleach) solution (Correct answer)
- Phenolic disinfectant
Correct answer: EPA-registered sodium hypochlorite (bleach) solution
EPA-registered sodium hypochlorite (bleach) is sporicidal and is the recommended disinfectant for C. difficile-contaminated environmental surfaces.
Question 3: What is the primary purpose of a 'protective environment' (PE) room in infection prevention?
- Prevent infectious aerosols from leaving the room
- Protect a severely immunocompromised patient from external environmental pathogens (Correct answer)
- Provide a safe space for infectious waste disposal
- Isolate patients with multi-drug resistant organisms
Correct answer: Protect a severely immunocompromised patient from external environmental pathogens
A protective environment uses positive pressure and HEPA filtration to protect severely immunocompromised patients from exogenous airborne pathogens, particularly fungi.
Question 4: A hospital observes an increase in gram-negative infections traced to shared equipment. Which practice most directly reduces this risk?
- Implementing contact precautions for all gram-negative infected patients
- Dedicating or thoroughly disinfecting equipment between patients (Correct answer)
- Increasing antibiotic prophylaxis for high-risk patients
- Installing UV-C robots in all patient rooms nightly
Correct answer: Dedicating or thoroughly disinfecting equipment between patients
Dedicating equipment to individual patients or rigorously disinfecting shared equipment between patients is the most direct way to interrupt gram-negative transmission via fomites.
Question 5: Which agency publishes the primary guidelines for ventilation requirements in healthcare facilities referenced by the CIC exam?
- Centers for Disease Control and Prevention (CDC) alone
- Occupational Safety and Health Administration (OSHA)
- American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) (Correct answer)
- Joint Commission on Accreditation of Healthcare Organizations (TJC)
Correct answer: American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
ASHRAE Standard 170 (Ventilation of Health Care Facilities) is the primary reference for healthcare ventilation requirements and is widely adopted in building codes.
Question 6: Improper reprocessing of flexible endoscopes most frequently leads to which type of healthcare-associated infection (HAI) transmission?
- Airborne transmission of respiratory pathogens
- Direct inoculation of pathogens during the procedure (Correct answer)
- Droplet transmission from contaminated surfaces
- Vector-borne transmission
Correct answer: Direct inoculation of pathogens during the procedure
Inadequately reprocessed endoscopes can directly inoculate patients with residual pathogens from previous patients during invasive procedures.
Question 7: What is the appropriate dwell time consideration when using a disinfectant wipe on a patient care surface?
- The surface must remain visibly wet for the manufacturer-specified contact time (Correct answer)
- Wiping the surface once is sufficient regardless of drying time
- Applying a second dry wipe immediately after the wet wipe to speed drying
- Only the number of wipes applied matters, not wet contact time
Correct answer: The surface must remain visibly wet for the manufacturer-specified contact time
Disinfectants must remain in contact with the surface (stay wet) for the manufacturer-specified dwell time to achieve the labeled kill claims.
CIC Environment of Care 3
An infection preventionist is reviewing the ICRA (Infection Control Risk Assessment) for a renovation project.
Which patient population warrants the most stringent Class IV containment measures?