17. RTI-6

Question 1

A military recruit is brought to basic training and has a routine examination done. Part of this examination includes an CXR which is notable but the patient doesn’t complain of any significant symptoms besides a cough. Culture is done failing to stain. What is characteristic of the lickley infectious agent?

A. Increased risk of infection in burn victims
B. Thick polysaccharide capsule
C.cystic fibrosis is a predosing condition
D. Produces red currant jelly sputum
E. lacks a cell wall

RFA

Answer 1

Ans. E. The patient has “walking pneumonia” causes by mycoplasma pneuomiae like other mycoplasma it lack a cell wall

A. B and C all describe Pseudomonas infection

D. Is characteristic of Klebsiella

Question 2

A 6 y/o boy is diagnosed with otitis externa from a gram negative rod, aerobic, motile bacteria. Which of the following is another characteristic of the specimen?

A. Alpha-hemolytic
B. Serum cold agglutination 
C. Pyocyanin and flurorescein green-yellow color
D. Large thick polysaccharide capsules
E. Sensitive to optochin

SZ

Answer 2

Ans. C. Pyocyanin and flurorescein green-yellow color

The boy is diagnosed with Pseudomonas aeruginosa which is Beta or gamma hemolytic.

B. Serum cold agglutination - mycoplasma pneumoniae
D. Large thick polysaccharide capsules - klebsiella pneumoniae
E. Sensitive to optochin - Strep pneumoniae

Question 3

A elderly woman is diagnosed with community acquired “walking” pneumonia. She is experiencing confusion, bloody mucuoid sputums, and GI symptoms. Which of the following is the bacterial diagnosis?

A. Mycoplasma pneumoniae
B. Chlamydophila pneumoniae
C. Coxiella burnetti
D. Legionella
E. Chlamydophila psittaci 

SZ

Answer 3

Ans. D. Legionella

Confusion in elderly patients, bloody mucuoid sputums, and GI symptoms are specific to Legionella

Question 4

A 39 year old alcoholic is brought to the hospital due to a persistent cough of thick red sputum. What describes this infection?

A. Most common causes of Swimmer ear
B. Produces hydrogen peroxide which mediates tissue destruction
C. Alpha hemolytic and optochin sensitive
D. Has two high affinity iron uptakes systems
E. Is a gram negative Rod

RFA

Answer 4

Ans. D. Has two high affinity iron uptake systems- aerobactin & enterochelin helps klebsiella grow. Which is the infection of the patient : Alcoholic and the thick red sputum are you clues.

A. Most common causes of Swimmer’s ear- this describes Pseudomonas.

B. Produces hydrogen peroxide which mediates tissue destruction-

C. Alpha hemolytic and optochin sensitive-S. pneumoniae

E. Gram negative Rod- is Pseudomonas. Klebsiella is a gram negative bacillus