CBIC Multidrug-Resistant Organisms 1

Question 1

Which of the following is the primary route of transmission for Methicillin-resistant Staphylococcus aureus (MRSA) in healthcare settings?

Accepted Answer

Direct and indirect contact

Answer

MRSA is primarily transmitted via direct contact with colonized or infected individuals and indirect contact through contaminated surfaces or equipment.

Question 2

Vancomycin-resistant Enterococcus (VRE) can survive on dry environmental surfaces for up to:

Accepted Answer

Several weeks to months

Answer

VRE is notably hardy and can persist on dry inanimate surfaces for several weeks to months, making environmental cleaning critical for control.

Question 3

Extended-spectrum beta-lactamase (ESBL)-producing organisms are MOST resistant to which class of antibiotics?

Accepted Answer

Penicillins and cephalosporins

Answer

ESBLs are enzymes that hydrolyze and inactivate most penicillins and cephalosporins, making ESBL-producing organisms resistant to these antibiotic classes.

Question 4

According to CDC/HICPAC guidelines, patients colonized or infected with an MDRO should be placed on which type of precautions?

Accepted Answer

Contact precautions

Answer

Contact precautions are the standard recommendation for MDROs to prevent transmission via direct or indirect contact with the patient or their environment.

Question 5

Active surveillance cultures (ASC) for MDROs are BEST described as cultures obtained from:

Accepted Answer

Asymptomatic patients to detect colonization

Answer

Active surveillance cultures are obtained from asymptomatic patients to identify colonization before clinical infection develops, enabling earlier implementation of precautions.

CBIC - Certification Board of Infection Control Practice Test

CBIC - Certification Board of Infection Control Practice Test

CBIC Multidrug-Resistant Organisms 1