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CRAM SEMR > I. ENTEROBACTERIACEAE > Flashcards

I. ENTEROBACTERIACEAE Flashcards

1
Q

gram negative
non spore
f. anaerobic bacilli
reduces nitrate to nitrite
ferments glucose

present in intestinal tract as commensal flora

A

enterobacteriaceae

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2
Q

enterobacteriaceae are usually present as commensal flora except for

OVERT OR TRUE PATHOGENS

A

yersinia, shigella, salmonella

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3
Q

enterobacteriaceae are large smooth gray colonies, non encapsulated except

A

klebsiella, enterobacter

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4
Q

enterobacteriaceae are non hemolytic except for –

A

E. coli (b-hemolytic)

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5
Q

all enterobacteriaceae are motile with peritrichous flagella except –

A

klebsiella, shigella, yersinia

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6
Q

may grow at low temp 1-5c

A

serratia, yersinia

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7
Q

extended spectrum b lactamase producing enterobacteria

A

EKK, e.coli, k. pneu, k. oxy

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8
Q

isolated from urinary tract and cause bacteremia

A

EPK, e. coli, p.mirabilis, k. pneu

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9
Q

antibiotic resistant genera

A

SEC, serratia, enterobacter, citro

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10
Q

assoc with diarrhea

A

yersinia, e.coli, shigella, salmonella

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11
Q

antigen determinants

heat stable; cell wall for e.coli and shigella

A

somatic o

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12
Q

antigen determinants

heat labile; flagellum for salmonella

A

flagellar h

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13
Q

antigen determinants

heat labile; covers o antigen

found as k1- e. coli
found as Vi- s. enterica

A

capsular k

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14
Q

infection:

neonatal sepsis

A

e. coli

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15
Q

infection:

dysentery

A

shigella

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16
Q

infection:

plague

A

y. pestis

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17
Q

infection:

wounds contaminated with soil and vegatation

A

erwinia

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18
Q

infection:

meningitis

A

e.coli, edwardsiella

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19
Q

infection:

enteric fever

A

edwardsiella, salmonella

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20
Q

infection:

mesenteric adenitis

A

y. pseudotuberculosis, entero

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21
Q

colon bacillus
inhabits normal bowel flora and female genital tract
invades enterocytes lining of the large intestine

marker of fecal contamination in water purification
leading cause of nosocomial infection- UTI

A

e. coli

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22
Q

flat dry with pink colonies: mc conkey
greenish metallic sheen: EMB

A

e. coli

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23
Q

antigenic determinants: O,H,K
VF: endotoxin, common pilli, intimin, k1 antigen. sex pili and adhesive fimbriae

A

e.coli

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24
Q

VF that causes neonatal meningitis in e. coli

A

k1 antigen

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25
Q

formerly called as e.coli atypical or enteric group 2
isolated from CSF, wounds and blood
culture: yellow-pigmented colonies

A

e. hermanii

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26
Q

infection:

infantile diarrhea stool wo blood

A

enteropathogenic E. coli EPEC

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27
Q

infection:

traveler’s diarrhea

BAP

A

`enterotoxigenic E. coli ETEC

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28
Q

infection:

montezumas’s revenge

BAP

A

`enterotoxigenic E. coli ETEC

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29
Q

infection:

dysentery like-shigella like infx
watery diarrhea with WBCs

A

enterinvasive E.coli EIEC

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30
Q

infection:

hemorrhagic colitis
hemolytic uremic syndrome

A

enterohemorrhagic e.coli EHEC

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31
Q

infection:

watery diarrhea

A

enteroadherent e.coli EAEC

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32
Q

infection:

UTI

A

enteroadherent e.coli EAEC
diffusely adherent e.coli DAEC

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33
Q

adheres to Hep2 cells forming clumps of bacteria ‘stacked brick appearance’

A

enteroadherent e.coli EAEC

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34
Q

most common cause of UTIs in human

A

uropathogenic e.coli

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35
Q

determines the organim’s ability to produce keratoconjuctivitis in guinea pig, virulence test for shigella and EIEC

A

sereny test

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36
Q

most common cause of UTIs in human

A

uropathogenic e.coli

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37
Q

production of cGMP

A

ST

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38
Q

production cAMP

A

LT

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39
Q

phage encoded cytotoxin identical to the shiga toxon produced by s.dysenteriae

produces damage to vero cells (african green monkey)

A

veratoxin I

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40
Q

e.coli strains that produce verotoxins are also called as -

A

STEC shiga toxigenic e.coli

41
Q

friedlander’s bacillus
bacillus capsulatus

A

klebsiella pneu subsp pneu

42
Q

CA of community acquired pneumonia
currant jelly like sputum

LOWER respiratory tract infx

A

k. pneu subsp pneu

43
Q

CA of chronic atrophic rhinitis
foul smelling rhinitis

A

k.pneu subsp ozanae

44
Q

CA of granuloma of nose and osopharynx

A

k.pneu subsp rhicoscleromatis

45
Q

all + except for indole, gelatin

A

k pneu pneu

46
Q

all - except for lysine

A

k pneu oza

47
Q

all + except for gelatin

A

k pneu oxy

48
Q

resembles klebsiella when gwoing on mac conkey

A

enterobacter

49
Q

formerly known as e. taylorae
isolated with osteomyelitis following traumatic wounds

A

enterobacter cancerogenus

50
Q

formerly known as enterobacter agglomerans

from POWDERED INFANT formula

A

chronobacter sakazakil

51
Q

formely known as enterobacter agglomerans

from CONTAMINATED IV FLUIDS

triple decarboxylase negative

A

pantoea agglomerans

52
Q

serratia

musty pungent odor potato like

A

s. odorifera

53
Q

most clinically significant in serratia species

bacteremic outbreaks in nurseries, burn units, cardiac surgery

epidemic of SEPTIC ARTHRITIS

A

s. marcescens

54
Q

causes osteomyelitis following a motorcycle accident

A

s. plymuthica

55
Q

has a delayed citrate reaction

A

hafnia

56
Q

hafnia that grows in beer wort of breweries

A

h. alvei biotype 1

57
Q

can cause acute glomerular nephritis

a rapid urease producer=renal stone formation

A

proteus

most common isol: p. mirabilis

58
Q

swarming phenomenon
burnt chocolate/burnt gun powder odor

A

proteus

59
Q

nosocomial outbreaks in burn units

A

providencia stuartil

60
Q

same biochemical reaction with P. vulgaris except citrate -

A

morganella

61
Q

isolated from cold blooded and warm blooded animals

A

edwardsiella

62
Q

plant pathogen

A

erwinia

63
Q

resmbles e.coli on mac conkey

biochemically resembling salmonella

A

citrobacter

64
Q

causes false + agglutination test with salmonella

A

citrobacter

65
Q

endocarditis with IV drug users

A

citrobacter freundii

66
Q

produces type 1 cephalosporinase

A

citrobacter freundii

67
Q

nursery outbreak of neonatal meningitis

A

citrobacter koseri

68
Q

formerly known as c.diversus

A

c. koseri

69
Q

most serious pathogenic enterobacteria causing

enteric fever, typhoid, gastroenteritis (food poisoning)

can be carried by human carriers

found in cold blooded animals as well as rodents and birds: natural hosts

A

salmonella

70
Q

VF: fimbriae and enterotoxin

somatic o and flagellar H antigen, Vi antigen

A

salmonella

71
Q

CA of enteric fever

A

S. serotype typhi

72
Q

CA of parathypoid fever

A

s. serotype paratyphi a,b,c
s serotype choleraesuis

73
Q

salmonella

all are motile except

A

s. pullorum, s. gallinarum

74
Q

salmonella

all produces gas except for

A

s. gallinarum, s. typhi

75
Q

salmonella found in lizards and other cold blooded animals

A

s. bongori

76
Q

most common form of food poisoning
mostly caused by s. enterica subsp enterica

A

gastroenteritis

77
Q

CA peanut butter outbreaks

A

s. typhimurium

78
Q

also known as typhoid fever caused by s. typhi

MOT: transmission thru fomites is possible, ingestion of contaminated food and water, human carriers

A

enteric fever

79
Q

characteristics: ROSE SPOTS- 2nd week of fever

complications: stays/harbor GALLBLADDER causing necrosis

A

enteric fever

80
Q

necrotizing cholecystitis
PEYER’s patches

A

enteric fever

81
Q

CA of enteric fever

resistant to gastric acids

A

S. typhi

82
Q

specimen for salmonella:

1st week of infx

A

blood

83
Q

specimen for salmonella:

2nd week of infx

A

stool

84
Q

specimen for salmonella:

3rd week of infx

A

urine

85
Q

intracellular organism multiply within the cells of colon

transmitted by 4Fs
flies, fingers, food, feces

somatic O antigen
spx: rectal swab

A

shigella

86
Q

most virulent shigella

A

s. dysenteriae

87
Q

CA of gay bowel syndrome

A

shigella flexneri

88
Q

CA of bacillary dysentery

A

s. dysenteriae type 1

89
Q

acute inflammatory colitis, bloody diarrhea (WBCs in tool)

caused: improper sanitary conditions-poor personal hygiene

highly communicable

symptoms: tenesmus

complications: ileus-obstruction of the intestine

A

bacillary dysentery

90
Q

plague bacillus
class a bioterrorism agent

CA of bubonic plague/ black death

A

yersinia pestis

91
Q

MOT: bite of xenopsylla cheopis

has the ability to survive and multiply inside phagocytes

A

yersinia pestis

92
Q

closed safety pin appearance

stalactile pattern

A

y. pestis

93
Q

plague: transmitted by fleas/rats/rodents which multiply in BLOOD and LYMPHS

– inflammatory swelling of axilla and groin buboes
results from infected flea

A

bubonic plague

94
Q

plague: transmitted by fleas/rats/rodents which multiply in BLOOD and LYMPHS

– acquired by close contact with victims, secondary to bubonic plague

A

pulmonary plague

95
Q

CA of enterocolitis
survive in cold temperature (food refrigeration)
contaminated packed RBCs

requires cold enrichment technique

BULLS EYE COLONIES

A

yersinia enterocolitoca

96
Q

only oxidase + member of the enterobacteriaceae

A

plesiomonas shiggeloides

97
Q

found in freshawater- warmer climates

APRON like colonies

ingestion of uncooked oysters, dlamps, shrimps

A

plesiomonas shigelloides

98
Q
A

CRAM SEMR (7 decks)

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