Krafts – UTI – bugs & practice Q.
Bug
E. coli
Proteus
mirabilis, P.
vulgaris
Morphology
Gram – Rod
Norm gut flora
Gram – rod
Normal gut flora
Klebsiella
Gram – rod
Staphylococcus
saprophyticus
Normal gut flora
Gram + cocci in
clusters
Enterococcus
faecalis
Ureaplasma
urealyticum
Chlamydia
trachomatis
Candida
albicans
Gram + cocci in
chains
Like mycoplasma,
no cell wall (G -)
Super small bact
Fungus with yeast
& hyphal phases
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
1
Use Krafts’ word doct for the rest.
Pathology
P pilli, F pilli, Type 1
pilli, endotoxin
Fermentation
lactose, reduces nitrate to
nitrite
Notes
Most common cause of
uncomplicated UTI
Urease positive,
swarming motility
Non-lactose-fermenting,
reduces nitrates  nitrites,
urease positive, swarming
motility
lactose, reduces nitrate to
nitrite
Makes Stones
Catalase positive, coag neg,
does not reduce nitrates
Honeymoon cystitis
Urease, swarms & has
capsule
Catalase negative, coag neg,
doesn’t reduce nitrates
STI
Obligate intracellular
parasite
STI
Infection mainly in
immunocompromised,
diabetic or on antibiotics
Practice Questions:
Answer options for #3, 5-11
All of the follow groups have increased UTI risk except?
A. Proteus
a. Sexually inactive women
B. Staph saprophyticus
b. Elderly people
C. E. coli
c. Male patient without catheter
D. Klebsiella
d. Man with urinary tract malformation
E. Pseudomonas
The following bugs are associated with ______________ (complicated or
F. Enterococcus faecalis
uncomplicated) infections: Klebsiella, other enterobacteriaceae,
G. Ureaplasma
pseudomonas, and serratia.
H. Chlamydia trachomatis
A 15-year-old sexually INactive girl presents in clinic with urinary
I. Candida albicans
frequency, urgency, and dysuria. What bug is most likely responsible for
the infection?
For the girl in question 2, is the infection most likely a lower or upper
UTI?
For the girl in Q2, if she were sexually active what would be the most likely bug?
Which of the following bugs has P pilli? What other pilli does it have?
Which of the bugs are sexually transmitted from one partner to another? (1+)
Which of the following bugs are urease positive? (1+)
Which of the bugs are gram negative rods? (1+)
Which of the bugs is most closely associated with kidney stones?
Which of the bugs are lactose fermenters & convert nitrates  nitrites? (1+)
A urine culture can provide you with which of the following information:
a. Bug identity
b. Amount of bug present
c. Sensitivities
d. All of the above
In UTIs the level of ________________enzyme produced by white blood cells can be elevated.
Which of the following can be helpful in distinguishing if a bugs present is “real” or a
contaminate?
a. Amount over 10,000 cfu/mL for an organism
b. Coagulase negative staph in sexually active men
c. Gram positive rods are usually true pathogens
d. If you are unsure, just guess because repeating the test is expensive.
Krafts – UTI – bugs & practice Q.
Use Krafts’ word doct for the rest.
Answers:
1. A (not C because even though sexual activity increases a woman’s risk for UTI, by virtue of female
genital anatomy, she is still at greater risk than a male patient without a catheter.)
2. Complicated UTI
3. C -E. coli – it is responsible for the majority of uncomplicated UTIs
4. Lower UTI (bladder, urethra) because she lacks symptoms of tissue invasion (flank pain, fever, chills).
5. B (honeymoon cystitis)
6. C. E. coli --- F pilli & type 1 pilli.
7. G & H – although not classified as an STI, you could make an argument for B because is a risk factor.
8. A & D
9. A, C, D
10. A
11. C & D
12. D
13. Leukocytes esterase
14. A
2