Clinical Pearls Microbio

Question 0

Give some examples of spirochetes.

Answer 0

Treponema pallidum (causes syphilis), Borrelia, Leptospira

Question 1

What is the causative agent of syphilis?

Answer 1

Treponema pallidum

Question 2

Smells::Proteus

Answer 2

Burned chocolate brownies

Question 3

Smells::Pseudomonas

Answer 3

Grape juice or corn tortillas

Question 4

Smells::S. aureus

Answer 4

Cheezeits or dirty socks

Question 5

Smells::Citrobacter

Answer 5

Rotten eggs

Question 6

Smells::Streptococcus milleri group

Answer 6

Butterscotch (pleasant smell)

Question 7

Which bacteria type is more virulent, in general? Exceptions?

Answer 7

Aerobic generally more virulent; exceptions of some genus i.e. Clostridium; host factors i.e. Immunosuppression

Question 8

P. acnes looks like what on a gram stain?

Answer 8

Squished spiders

Question 9

Squished spider on gram stain may indicate …

Answer 9

P. acnes

Question 10

Propionibacterium acnes - describe, found where, associated with what conditions?

Answer 10

Gram-positive anaerobic rod found predominantly in the sebaceous gland-rich areas of the skin and am associated with inflammatory conditions such as acne vulgaris, sarcoidosis and implant-related infections such as prosthetic joint infections

Question 11

I am a gram-positive anaerobic rod found predominantly in the sebaceous gland-rich areas of the skin and am associated with inflammatory conditions such as acne vulgaris, sarcoidosis and implant-related infections such as prosthetic joint infections. Who am I?

Answer 11

Propionibacterium acnes

Question 12

What color do gram-positive organisms stain? Gram-negative?

Answer 12

Purple; red

Question 13

On gram stain staphylococci look like?

Answer 13

Grape clusters; billiard balls

Question 14

Grape clusters on a gram stain may indicate?

Answer 14

Staphylococci

Question 15

Many non-lactose fermenters are famous for what?

Answer 15

Frequently being resistant to multiple antibiotics?

Question 16

Name non-lactose fermenter examples that are frequently resistant to multiple antibiotics.

Answer 16

Acinetobacter, pseudomonas, serratia, stenotrophomonas