F, Lec (campylobacter20)

Question 1

Campylobacter spp. have been known to cause

Answer 1

abortion in
domestic animals

Question 2

Campylobacter is the most common cause of _______ worldwide

Answer 2

Bacterial gastroenteritis

Question 3

most common
cause of bacterial gastroenteritis worldwide is

Answer 3

Campylobacter
jejuni

Question 4

transmission of campylobacterioses has been attrib-
uted to

Answer 4

direct contact with animals and handling infected pets

Question 5

autoimmune disorder characterized by acute
paralysis

Answer 5

Guillain-barre syndrome

Question 6

recognized as a major cause of type B gas-
tritis,

Answer 6

Helicobacter pylori

Question 7

chronic condition formerly associated primarily with
stress and chemical irritants

Answer 7

type B gas-
tritis

Question 8

There is speculation that long-term H. pylori infection
resulting in chronic gastritis is an important risk factor for

Answer 8

gastric
carcinoma

Question 9

can be recovered in several routine blood
culture media

Answer 9

C. fetus subsp. fetus

Question 10

Campylobacter spp. that cause enteric illness are
isolated from

Answer 10

stool samples and rectal swabs

Question 11

toxic to enteric campy-
lobacters and should therefore be avoided.

Answer 11

buffered glycerol saline

Question 12

Tissue samples may also be
placed in

Answer 12

cysteine-Brucella broth with 20% glycerol and frozen
at −70° C

Question 13

commonly used medium

Answer 13

enriched selective agar, Campy-BAP

Question 14

commercially available medium contains

Answer 14

Brucella agar base, 10% sheep red blood cells, and a combination
of antimicrobials—vancomycin, trimethoprim, polymyxin B,
amphotericin B, and cephalothin

Question 15

H. pylori can be recovered from

Answer 15

gastric biopsy

Question 16

Other selective media that have
been successful in recovering Campylobacter spp.

Answer 16

Butzler
medium and Skirrow’s medium.

Question 17

It is important that
the inoculated medium be fresh and moist and that the culture be
incubated in a

Answer 17

Microaerophilic and capnophilic environment

Question 18

Temp to recover campylobacter jejuni

Answer 18

42C

Question 19

Temp to recover campylobacter fetus

Answer 19

37C

Question 20

The ideal atmo-
spheric environment for campylobacter

Answer 20

gas mixture of 5%
O2, 10% CO2, and 85% N2

Question 21

The ideal atmo-
spheric environment for helicobacter

Answer 21

5% to
10% O2 and 5% to 12% CO2

Question 22

Microscopic Morphology. Campylobacter spp

Answer 22

curved,
non–spore-forming, gram-negative rods

Question 23

Enteric campylobacters may appear as

Answer 23

long spirals or ‘S’ or seagull-wing
shapes

Question 24

recommended as a counterstain

Answer 24

carbolfuchsin

Question 25

Motility of campylobacter

Answer 25

“darting” motility

Question 26

typical colony morphology of C. jejuni and other enteric campylobacters is

Answer 26

moist, runny looking, and spreading

Question 27

Colonies are usually

Answer 27

nonhemolytic

Question 28

observed in some enteric campylobacter colo- nies

Answer 28

tan or slightly pink coloration

Question 29

Definitive identification of campylobacter

Answer 29

Positive oxidase, motile, positive hippurate hydrolysis

Question 30

important characteristic for the identification of C. jejuni

Answer 30

positive hippurate hydrolysis

Question 31

infections usually are identified by nonculture methods.

Answer 31

Helicobacter

Question 32

Important test for helicobacter pylori

Answer 32

Rapid urease test

Question 33

collected tissue sample is placed onto

Answer 33

Christensen’s urea medium and incubated at 37° C for 2 hours.

Question 34

Urease activity can also be detected by the

Answer 34

urea breath test,

Question 35

H. pylori in the stomach releases

Answer 35

13CO2 or 14CO2,

Question 36

In urea breath test the patient is given

Answer 36

13C- or 14C-labeled urea orally

Question 37

Detects 13CO2 or 14CO2,

Answer 37

scintillation counter