Bcid Training - Module 4 Quiz

12 Questions

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Bcid Training - Module 4 Quiz

Quiz based upon the materials covered in Module 4: Clinical Relevance of Microorganisms found in Blood Stream Infections


Questions and Answers
  • 1. 
    Which type of organism is responsible for the largest number of blood stream infections?
    • A. 

      A. Gram negative bacteria

    • B. 

      B. Gram positive bacteria

    • C. 

      C. Fungi

    • D. 

      D. Viruses

  • 2. 
    Which of the following correctly shows the order of taxonomic classification of bacteria?
    • A. 

      A. Genus, species, family

    • B. 

      B. Genus, kingdom, species

    • C. 

      C. Family, genus, species

    • D. 

      D. Species, genus, family

  • 3. 
    Which of the following statements does not describe gram negative bacteria? 
    • A. 

      A. They have a thick, homogenous peptidoglycan sheath making up the cell wall

    • B. 

      B. They have an outer lipopolysaccharide (LPS) membrane

    • C. 

      C. The cell wall secretes an endotoxin that protects it from attack

    • D. 

      D. They are often more resistant to antibiotics than gram positive bacteria

  • 4. 
    Why are gram stains valuable as a companion to molecular?  
    • A. 

      A. They aid in bacterial ID when a molecular test is negative

    • B. 

      B. It is required for selecting optimal growth media for sub-culture (which is needed for full susceptibility)

    • C. 

      C. Skipping the gram stain is off-label for all FDA cleared MDx assays

    • D. 

      D. Gram stains may aid in detecting polymicrobial infections

    • E. 

      A & b only

    • F. 

      B & d only

    • G. 

      All of the above

  • 5. 
    True or false:  Nosocomial infections and Community acquired infections are basically the same thing.
    • A. 

      True

    • B. 

      False

  • 6. 
    Why is it important to know a patient’s history when diagnosing sepsis/blood stream infections? 
    • A. 

      A. It doesn’t matter because a molecular test reports a result after only 1 hour from bottle positivity

    • B. 

      B. Because the patient may be contagious

    • C. 

      C. A patient’s history can help guide empiric antibiotic treatment while waiting for definitive test results

    • D. 

      D. To distinguish a UTI from a blood stream infection

  • 7. 
    Which one of the following is more likely a true infection, rather than a contaminant? 
    • A. 

      A. S. aureus

    • B. 

      B. Corynebacterium

    • C. 

      C. Bacillus

    • D. 

      D. Propionibacterium

  • 8. 
    Why would a clinician draw multiple blood samples from different body sites on a patient? 
    • A. 

      A. Because some sites are easier to get a blood sample from

    • B. 

      B. To rule out contamination introduced at the site of the blood draw

    • C. 

      C. To rule out contamination from a catheter

    • D. 

      D. To get a sufficient amount of blood to run multiple tests

  • 9. 
    Which one of the following is not a common cause of gram positive bacteremia?
    • A. 

      A. Staphylococcus aureus

    • B. 

      B. Streptococcus pneumoniae

    • C. 

      C. Bacillus subtilus

    • D. 

      D. Enterococcus faecium

  • 10. 
    Which of the following is an important, multi-drug resistant, gram negative bacteria? 
    • A. 

      A. Acinetobacter baumannii

    • B. 

      B. Candida albicans

    • C. 

      C. Cryptococcus species

    • D. 

      D. Streptococcus pyogenes

  • 11. 
    What approximate % of blood stream infections are caused by fungi? 
    • A. 

      A. 0-2%

    • B. 

      B. 5-10%

    • C. 

      C. 20-30%

    • D. 

      D. >30%

  • 12. 
    True or False:  Gram-negative bacterial species tend to be more drug resistant.
    • A. 

      True

    • B. 

      False