Bcid Training - Module 4 Quiz

12 Questions | By GenMark | Updated: Mar 19, 2022 | Attempts: 190

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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