UTI (Exam #3)

Question 1

What are the four UTI organisms? Which is most common?

Answer 1

• E. coli (UPEC) = MOST common
• Proteus spp.
• Staphylococcus saprophyticus
• Streptococcus agalactiae (GBS)

Question 2

Which two UTI organisms are G-? Which two are G+?

Answer 2

G-:

• E. coli (UPEC) = MOST common
• Proteus spp.

G+:

• Staphylococcus saprophyticus
• Streptococcus agalactiae (GBS)

Question 3

What four VF are associated with E. coli for UTI?

Answer 3

• Dr adhesins
• K antigen
• P. fimbriae
• Alpha/Beta hemolysis

Question 4

What organism involves VF of Dr adhesins and K antigen?

Answer 4

E. coli

- UTI

Question 5

What diagnostic test is used for UTI, and what are the two components?

Answer 5

CLED/EMB

• CLED: differentiate between G- (lactose)
• EMB: G- selective

Question 6

What organisms involves destruction of IgA protease?

Answer 6

Proteus spp.

- UTI

Question 7

What UTI organism involves urease release, and what can this result in?

Answer 7

Proteus spp.

- Forms struvite crystals

Question 8

What organism can present with “swarming” on culture agar?

Answer 8

Proteus spp.

- UTI

Question 9

What organism involves “honeymoon” cystitis?

Answer 9

Staphylococcus saprophyticus

- UTI

Question 10

What organism is coagulase negative WITH Novobiocin resistance, and what is the significance of this?

Answer 10

Staphylococcus saprophyticus

• UTI
• Helps differentiate from other Staph (which are Novobiocin sensitive)

Question 11

What organism involves CAMP factor?

Answer 11

Streptococcus agalactiae (GBS)
- UTI