CBIC Ultimate CBIC 5 — Questions and Answers
Question 1: When performing a hand hygiene compliance audit, an infection preventionist observes that a nurse applies alcohol-based hand rub but does not cover all surfaces of both hands. This represents which type of hand hygiene failure?
- Missed indication failure
- Technique failure (Correct answer)
- Product selection failure
- Timing failure
Correct answer: Technique failure
A technique failure occurs when hand hygiene is performed at the correct indication but with improper technique, such as insufficient coverage of all hand surfaces.
Question 2: Which of the following is the RECOMMENDED antiseptic for skin preparation prior to inserting a central venous catheter?
- Povidone-iodine 10% solution
- Isopropyl alcohol 70% alone
- Chlorhexidine gluconate >0.5% in alcohol (Correct answer)
- Benzalkonium chloride 0.1%
Correct answer: Chlorhexidine gluconate >0.5% in alcohol
Current evidence and NHSN/APIC guidelines support chlorhexidine gluconate in an alcohol base as the preferred antiseptic for central line insertion site preparation due to superior residual activity.
Question 3: A hospital experiences a cluster of E. coli infections in the neonatal ICU. Pulse-field gel electrophoresis (PFGE) reveals identical banding patterns in all isolates. This finding suggests:
- Random, unrelated infections from different community sources
- A common clonal outbreak source requiring investigation (Correct answer)
- Lab contamination of specimen cultures
- Normal variation in endemic E. coli strains
Correct answer: A common clonal outbreak source requiring investigation
Identical PFGE banding patterns indicate that the isolates are clonally related, strongly suggesting a common source or transmission chain requiring a formal outbreak investigation.
Question 4: Which of the following best describes the purpose of a ventilator bundle in ICU patients?
- To standardize mechanical ventilator settings for all patients
- To combine evidence-based interventions that collectively reduce VAP rates (Correct answer)
- To establish weaning criteria for prolonged mechanical ventilation
- To ensure proper circuit changes every 48 hours
Correct answer: To combine evidence-based interventions that collectively reduce VAP rates
A ventilator bundle groups multiple independent evidence-based practices — such as head-of-bed elevation and daily sedation vacations — which together achieve greater VAP reduction than any single measure.
Question 5: In the context of infection prevention program management, a process measure would BEST be exemplified by:
- The central line-associated bloodstream infection (CLABSI) rate per 1,000 line-days
- The percentage of staff who completed annual infection prevention competencies (Correct answer)
- The number of patients diagnosed with MRSA in a given month
- The 30-day readmission rate for surgical patients
Correct answer: The percentage of staff who completed annual infection prevention competencies
Process measures evaluate whether recommended practices are being performed, such as training completion rates, whereas outcome measures (like CLABSI rates) reflect the end result.
Question 6: Which of the following is an example of horizontal infection prevention strategy?
- Targeted MRSA decolonization with intranasal mupirocin and CHG bathing
- Implementation of universal contact precautions in the ICU (Correct answer)
- Vaccination of healthcare workers against influenza
- Screening all admissions for C. difficile colonization
Correct answer: Implementation of universal contact precautions in the ICU
Horizontal strategies apply broad interventions to all patients regardless of pathogen or culture result, such as universal contact precautions, rather than targeting a specific organism.
Question 7: A healthcare worker with active, weeping hand dermatitis should be:
- Instructed to double-glove during all patient care activities
- Temporarily reassigned from direct patient care pending treatment and healing (Correct answer)
- Permitted to work normally as long as gloves are worn consistently
- Reported to the state health department as an infection risk
Correct answer: Temporarily reassigned from direct patient care pending treatment and healing
Active weeping dermatitis compromises the skin barrier, increases colonization risk, and impairs glove integrity — temporary reassignment from direct patient care is the standard occupational health recommendation until resolved.
CBIC Ultimate CBIC 5
When performing a hand hygiene compliance audit, an infection preventionist observes that a nurse applies alcohol-based hand rub but does not cover all surfaces of both hands.
This represents which type of hand hygiene failure?