CBIC Ultimate CBIC 4

Question 1

Which of the following is the MOST important risk factor for developing a surgical site infection (SSI)?

Accepted Answer

Prolonged preoperative hospitalization

Answer

Prolonged preoperative hospitalization allows colonization with hospital-adapted, drug-resistant organisms, significantly increasing the risk of SSI.

Question 2

The Hawthorne effect in infection prevention surveillance refers to:

Accepted Answer

Improvement in hand hygiene compliance when observers are present

Answer

The Hawthorne effect describes the phenomenon where compliance improves temporarily because individuals know they are being observed, which can inflate hand hygiene audit results.

Question 3

Which bloodborne pathogen has the HIGHEST transmission risk following a needlestick exposure from an infected patient?

Accepted Answer

Hepatitis B virus (HBV)

Answer

HBV has the highest per-exposure transmission risk following a needlestick (6–30%) compared to HCV (~1.8%) and HIV (~0.3%), particularly with HBeAg-positive source patients.

Question 4

An infection preventionist is reviewing the literature to assess the effectiveness of a new intervention. Which study design provides the highest level of evidence?

Accepted Answer

Randomized controlled trial

Answer

A randomized controlled trial (RCT) is the gold standard study design, minimizing bias through random allocation of participants to intervention and control groups.

Question 5

Which of the following pathogens is associated with waterborne outbreaks in healthcare facilities through contaminated ice machines and water systems?

Accepted Answer

Legionella pneumophila

Answer

Legionella pneumophila thrives in warm water systems such as cooling towers, hot water tanks, and decorative fountains, causing healthcare-associated Legionnaires' disease outbreaks.

CBIC - Certification Board of Infection Control Practice Test

CBIC - Certification Board of Infection Control Practice Test

CBIC Ultimate CBIC 4