enterics 2 Flashcards

(28 cards)

1
Q

what parasite mimic traveler’s diarrhea

a. giardia lamblia
b. a. lumbricoides
c. necator americanus

A

Parasite that mimic the traveler’s diarrhea / ETEC

- Giardia lamblia

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2
Q

what escherichia coli strains is Montezuma revenge

a. ETEC
B. EPEC
C. EHEC
D. EIEC

A

ENTEROTOXIGENIC E. COLI (ETEC)

  • grows only on BAP
  • epidemic diarrhea , montezuma revenge, turista diarhea
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3
Q

most common cause of gram negative health care - associated infection

a. Escherichia coli
b. klebsiella
c. proteus
d. enterobacter

A

Escherichia coli

  • most common cause of gram negative health care - associated infection
  • 90% major cause of UTI (UPEC strain)
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4
Q

agent of severe outbreaks in newborn nurseries in the u.s

a. etec
b. epec
c. ehec
d. eiec

A

enteropathogenic e. coli (EPEC)

  • seen in newborns and infants
  • wtaery diarrhe but no blood
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5
Q

enterohemorrhagic e. coli (EHEC) causes bloody diarrhea from ___________ production, which is a cytoplasm resembling by shigella

a. intimin
b. hydrochloric acid
c. verotoxin

A

verotoxin

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6
Q

which of the following strain of e. coli is associated to HEMORRHAGIC COLITIS AND HEMOLYTIC UREMIC SYNDROME

a. EPEC
B. ETEC
C. EIEC
D. EHEC

A

ENTEROHEMORRHAGIC E. COLI

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7
Q

WHICH OF THE FOLLLOWING STRAINS OF E. COLI MOST COMMON CAUSE OF UTI IN HUMANS

A. DAEC
B. EAEC
C. UPEC
D. ETEC

A

UROPATHOGENIC E. COLI

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8
Q

which of the following serotype of e. coli is negative for sorbitol

a. e. coli 015:H7
b. upec
c. eaec
d. anaerobic e.coli

A

E. coli 015:H7

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9
Q

what medium to used in E.coli 015:H7

.a mac

b. emb
c. smac

A

smac

(+) colorless

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10
Q

diffusely pattern and causes diarrheal syndrome with WATERY STOOL without rbc or wbc present

a. DAEC
b. EAEC
c ETEC

A

DAEC
- watery

EAEC
- mucoid

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11
Q

this e. coli causes watery stool, MUCOID diarrhea without rbc or wbc in the stool

a. DAEC
b. EAEC
c ETEC

A

DAEC
- watery

EAEC
- mucoid

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12
Q

which of the following species of shigella is negative to mannitol

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

mannitol – onpg
s. dysenteriae - - - -

s. flexneri + - -
s. boydii + - -
s. sonnei + - +
ans: shigella dysenteriae

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13
Q

which of the following species of shigella is positive to ONPG

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

mannitol – onpg
s. dysenteriae - - - -

s. flexneri + - -
s. boydii + - -
s. sonnei + - +

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14
Q

which of the following gram negative spp causes Bacillary dysentery

a. e. coli
b. shigella
c. klebsiella
d. proteus

A

shigella

causes SHIGELLOSIS or BACILLARY DYSENTERY

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15
Q

most prevalent spp of shigella in U.S

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

shigella sonnei

  • most prevalent
  • most common
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16
Q

what enrichment medium to be used in shigella

a. bap
b. emb
c. cin
d. selenite f broth

A

selenite f broth

17
Q

which of the following shigella species is a late lactose fermenter

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

s. sonnei

- is a late lactose fermenter and has a positive reaction on onpg test

18
Q

which of the following shigella species is one of the cause of GAY BOWEL SYNDROME

a. s. dysenteriae
b. s. flexneri
c. s. boydii
d. s. sonnei

A

SHIGELLA FLEXNERI

- GAY BOWEL SYNDROME

19
Q

rust tinged sputum

a. s. penumoniae
b. klebsiella pneumoniae

A

streptococcus pneumoniae
- rust tinged sputum

klebsiella pneumoniae
- currant jelly like sputum

20
Q

also known as friendlanders bacillus

a. e. coli
b. shigella
c. klebsiella
d. proteus

A

klebsiella pnuemoniae

- friedlanders bacillus

21
Q

what species of klebsiella is encapsulated and appears mucoid and also tend to form a string

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

klebsiella pnuemoniae

  • friedlanders bacillus
  • encapsulated
  • appers as mucoid
  • tend to form a string
  • cause of PRIMARY BACTERIAL PNUEMONIA
  • currant jelly like
22
Q

donovan body

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

klebsiella granulomatis

  • causes granuloma inguinale
  • donovan body
23
Q

which of the following klebsiella spp is indole positive

a. klebsiella pnuemoniae
b. klebsiella oxytoca
c. klebsiella granulomatis
d. klebsiella ozaenae

A

k. oxytoca

- the only indole positive in klebsiella

24
Q

which of the species of Enterobacter is most frequent clinical isolate

a. enterobacter cloacae
b. enterobacter sakazakii
c. enterobacter gergoviae
d. enterobacter aerogenes

A

Enterobacter aerogenes

- the most frequent clinical isolates

25
which of the species of Enterobacter found as contaminant of powdered infant formula a. enterobacter cloacae b. enterobacter sakazakii c. enterobacter gergoviae d. enterobacter aerogenes
enterobacter sakzakii (now: Cronobacter sakazakii) - contaminant on powdered infant formula BHIA - yellow pigemntation
26
which of the species of Enterobacter has a STRONG UREASE ACTIVITY a. enterobacter cloacae b. enterobacter sakazakii c. enterobacter gergoviae d. enterobacter aerogenes
enterobacter gergoviae - strong urease activity - inable to ferment adonitol and sorbitol
27
Serratia species exhibit pink to red colonies due to production of __________ pigments after incubation a. uroerythin b. urochrome c. staphylokinase d. prodigiosin
serratia non diffusible red pigment PRODIGIOSIN is exhibited by the organism when incubated at 35 degree celsius
28
which of the following serratia species cause bacteremic outbreaks in nurseries, cardiac surgery units and burn units a. serratia marcescens b. serratia liquifaciens c. serratia rubidaea
serratia marcescens - most significant spp - associated with PNEUMONIA AND SEPTICEMIA in immunosuppressed patients including undergoing chemotherapy