Enterobacteriaceae Flashcards
(74 cards)
1
Q
What biochemical test are all enterobacteriacea negative for?
A
Oxidase
2
Q
What are the lactose fermenters?
A
Klebsiella E. coli Enterobacter Serratia Citrobacter
3
Q
What are the non lactose fermenters?
A
Proteus Edwardsiella Salmonella Providencia Morganella Yersinia Shigella
4
Q
LF
IMViC + -++
Urease +
Indole +
A
Klebsiella oxytoca
5
Q
LF IMViC + + - - Urease - H2S - Lysine + Ornithine + Lactose +
Beta hemolytic
Large colonies
A
E. coli
6
Q
LF IMViC - - + + Ornithine + Lysine + Arginine -
A
Enterobacter aerogenes
7
Q
LF IMViC - - + + Ornithine + Lysine - Arginine +
A
Enterobacter cloacae
8
Q
NLF
IMViC - - + +
Ornithine +
Lysine +
A
Serratia
9
Q
LF IMViC - + - + Ornithine - Lysine - H2S + Urease + ONPG +
A
Citrobacter freundii
10
Q
LF IMViC - + - + Ornithine - Lysine - H2S -
A
Citrobacter koseri
11
Q
LF IMViC - - + + Ornithine - Lysine + Urease + Indole -
A
Klebsiella pneumoniae
12
Q
NLF
IMViC + + - -
Urease +
H2S +
A
Proteus vulgaris
13
Q
NLF
IMViC - + - +
Urease +
H2S +
A
Proteus mirabilis
14
Q
NLF IMViC + + - Urease - H2S + ONPG + Fish or reptiles!
A
Edwardsiella
15
Q
NLF IMViC - + - V Urease - H2S + ONPG - Ornithine +
A
Salmonella non typhi
16
Q
NLF IMViC - + - V Urease - H2S + ONPG - Ornithine - Lysine +
A
Salmonella typhi
17
Q
NLF IMViC + + - - H2S - Ornithine + PDA +
A
Morganella
18
Q
NLF IMViC + + - + PDA + Ornithine - Urease +
A
Providencia stuartii
19
Q
NLF IMViC + + - Sucrose fermenter Urease - Ornithine-
A
Yersinia pestis
20
Q
NLF IMViC + + - Sucrose fermenter Ornithine + Urease + Bulls eye on CIN
A
Yersinia entercolitica
21
Q
NLF IMViC - + - - H2S - Ornithine + Nonmotile
A
Shigella sonnei
22
Q
NLF
IMViC - + - -
H2S -
Ornithine -
A
Shigella dysenteriae
23
Q
What organisms are H2S +?
A
Prince Edward Cooks Salmon
Proteus Edwardsiella Citrobacter Salmonella
24
Q
What organisms are nonmotile at 37?
A
SKY
SHIGELLA
KLEBSIELLA
YERSINIA
25
What organisms are PDA positive?
PPM
PROTEUS
PROVIDENCIA
MORGANELLA
26
What organisms are positive for vogues?
SERRATIA
ENTEROBACTER
KLEBSIELLA
27
What color is E. coli O157:H7 on SMAC?
Colorless
28
what shigella spp is group A?
dysenteriae (most severe)
29
what shigella spp is group B?
flexneri
30
What shigella spp is group C?
boydii
31
what shigella spp is group D?
sonnei (most common)
32
what organisms are A/A on TSI?
```
(sun over desert) (y/y)
S- serratia
E- escherichia
E- enterobacter
K- klebsiella
```
33
what organisms are A/A H2S+ on TSI?
C- citrobacter
A- arizona
P- proteus
(cap the geyser)
34
what organisms are K/A H2S + on TSI?
```
(moon over desert)
C- citrobacter
A- arizona
S- salmonella
E- edwardsiella
```
35
what organisms are K/A on TSI?
```
moon over desert
S- shigella
Ci- citrobacter
P- providencia
P- plesiomonas
P- proteus
Y- Yersinia
```
36
Test differentiates klebsiella and enterobacter and their reactions
Ornithine
Klebsiella -neg
Enterobacter- pos
37
O antigen use
Serological grouping of salmonella shigella
38
H antigen use
Serotype salmonella
39
K antigen function
Envelope
Prevent phagocytosis
Increase virulence
40
E. coli infections
UTI
Septicemia
Neonatal sepsis and meningitis
Diarrhea
41
Edwardsiella infections
Opportunistic
Bacteremia
Wounds
42
Bipolar staining organism
Yersinia
43
Lactose negative
```
Shigella
Edwardsiella
Salmonella
Citrobacter
Serratia
Proteus
Morganella
Providencia
Yersinia
```
44
H2S +
Edwardsiella
Salmonella
Citrobacter
Proteus
45
VP +
Klebsiella
Enterobacter
Serratia
46
Urease +
Proteus
| Morganella
47
Citrobacter freundii infections
Nosocomial
48
Klebsiella infections
Pneumonia
UTI
Septicemia
49
Enterobacter infections
Opportunistic and nosocomial
UTI
RTI
wounds
50
Serratia infections
Opportunistic
Pneumonia
Septicemia
51
Proteus infections
UTI
Wound
Septicemia
52
Providencia infections
UTI
| Diarrhea
53
Yersinia enterocolitica infections
Diarrhea
54
Enterohemorrhagic (EHEC /STEC) pathogenicity
Diarrhea
Hemorrhagic colitis
HUS
most common cause of renal failure in children
55
EHEC disease mechanism and gram stain
Toxins
| RBCs
56
ETEC infections
Travelers diarrhea
57
ETEC disease mechanism and gram stain
Toxins
| No polys / RBCs
58
EIEC infections
Bloody diarrhea
| Dysentery like
59
EIEC disease mechanism and gram stain
Invasive ness
| POLYS / RBCs / mucus
60
EPEC infections
Diarrhea in infants
61
EPEC disease mechanism and gram stain
Adherence
| No polys/ RBCs
62
EAEC infections
Diarrhea
63
Differentiate VP + GNR
Klebsiella - ornithine -, oxytoca indole +
Serratia - NLF
Enterobacter - ornithine +, aerogenes arginine -, cloacae lysine -
64
Differentiate H2S + GNR
Citrobacter - LF
Salmonella - indole -
Proteus - urease + , vulgaris- indole +
Edwardsiella - indole +
65
Differentiate PD + GNR
Proteus vulgaris - ++- - H2S
Proteus mirabilis - -+-+
Morganella - ++- -
Providencia ++-+
66
What organism is sometimes mistaken for salmonella and will agglutinate salmonella polyvalent antiserum?
Citrobacter freundii
67
Drugs of choice for treatment of enterobacteriaceae infections
Aminoglycosides
Sulfamethoxazole-trimethoprim
3rd generation cephalosporins
68
If K antigen is present what must be done to detect O antigen? Why?
Boiled for 30 minutes
Covers O antigen and is heat labile
69
Kauffman white classification
Classify salmonella based on O and H antigens
70
Only DNAse + organism
Serratia
71
Lysine +
```
E. coli
Klebsiella
Enterobacter aerogenes
Salmonella
Serratia
```
72
Indole +
Proteus vulgaris
Providencia
Morganella
E. coli
73
ETEC E. coli produces a toxin similar to what other organism
Vibrio cholerae
74
Antibiotics to treat infections
Aminoglycosides
Beta lactams
Quinolones
