FA Gram Neg Rods III

Question 1

Major cause of bloody diarrhea, esp in kids; fecal-oral transmission through foods; comma or S-shaped, oxidase positive, grows at 42 degrees

Answer 1

Campylobacter jejuni

Campy likes the hot campfire!

Question 2

campylobacter jejuni is a common antecedent to what two conditions

Answer 2

guillain barre, reactive arthritis

Question 3

produces profuse rice water diarrhea via enteroxin that permanently activates Gs –> increased cAMP

Answer 3

Vibrio cholerae

Question 4

vibrio cholerae shape, oxidase, media

Answer 4

comma shaped, oxidase +, grows in alkaline media

Question 5

vibrio cholerae is endemic to

Answer 5

developing countries; prompt oral rehydration is necessary

Question 6

usually transmitted from pet fees (e.g. puppies), contaminated milk, or pork; caused mesenteric adenines that can mimic Crohn disease or appendicitis

Answer 6

Yersinia enterocolitica

Question 7

Causes gastritis and duodenal peptic ulcers; creates alkaline microenvironment in stomach

Answer 7

H pylori

Question 8

H pylori is a risk factor for

Answer 8

peptic ulcer, gastric adenocarcinoma, and lymphoma

Question 9

Curved gram negative rod that is catalase, oxidase and urease +

Answer 9

H pylori

Question 10

H pylori diagnosis

Answer 10

urea breath teat or fecal antigen test

Question 11

H pylori treatment

Answer 11

triple therapy:

1. proton pump inhibitor
2. clarithromycin
3. either amoxicillin or metronidazole

Question 12

What are the three spirochetes of which to be aware?

Answer 12

BLT
borrelia
leptospira
teponema

Question 13

only one spirochete can be visualized using aniline dye (Wright or Giemsa) in light microscopy

Answer 13

Borrelia is big

Question 14

How do you visualize tremponema?

Answer 14

dark-field microscopy

Question 15

Found in water contaminated with animal urine

Answer 15

Leptosprina interrogans

Question 16

Leptospirosis symptoms

Answer 16

flu-like symptoms, jaundice, photphobia with conjucntival suffusion (erythema without exudate)

Question 17

classic patient for leptospirosis

Answer 17

surfers and in tropics (hawaii)

Question 18

What is Weil disease?

Answer 18

Icterohemorrhagic leptospirosis = severe form with jaundice and azotemia from liver and kidney dysfunction; fever, hemorrhage, and anemia

Question 19

spiral shaped bacteria with axial filaments are called

Answer 19

spirochetes