CBIC Multidrug-Resistant Organisms

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

Airborne droplet nuclei

Answer

Common vehicle (contaminated food/water)

Answer

Vector-borne transmission

Question 2

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

Accepted Answer

Several weeks to months

Answer

24 hours

Answer

1 week

Answer

Only a few hours

Question 3

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

Accepted Answer

Penicillins and cephalosporins

Answer

Aminoglycosides

Answer

Fluoroquinolones

Answer

Macrolides

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

Airborne precautions

Answer

Droplet precautions

Answer

Protective environment

Question 5

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

Accepted Answer

Asymptomatic patients to detect colonization

Answer

Patients showing signs of clinical infection only

Answer

All staff members upon hire

Answer

Patients with positive blood cultures

Question 6

Carbapenem-resistant Enterobacterales (CRE) are considered particularly dangerous because:

Accepted Answer

Treatment options are extremely limited due to resistance to last-resort antibiotics

Answer

They spread only via airborne routes

Answer

They produce toxins similar to C. difficile

Answer

They form spores that survive standard disinfection

Question 7

Which anatomical site is MOST commonly used for MRSA decolonization therapy?

Accepted Answer

Anterior nares

Answer

Axilla

Answer

Groin

Answer

Oropharynx