Term
| The Tribe Klebsielleae include what species? |
|
Definition
Klebsiella
Enterobacter
Serratia
Hafnia |
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Term
| Key biochemicals for Klebsielleae |
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Definition
VP: Positive (Only Enterobacteriaceae to be pos)
H2S: Negative
ONPG: Positive (lactose pos)
PAD: Negative
Indole: Negative (except for kleb. oxytoca) |
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Term
|
Definition
NF of stool
Common cause of nosocomially acquired pneumonia, UTI and septicemia
Seen with increased frequency in alcoholics |
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Term
| Klebsiella colonial morphology |
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Definition
BAP: Large, mucoid colonies (they are encapsulated)
MAC: Large, mucoid, pink
XLD: Large, mucoid, yellow colonies
EMB: Large, mucoid, purple/brown |
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Term
| Key biochemicals for Klebsiella spp. |
|
Definition
Motility: Negative
VP: Positive
H2S: Negative
PAD: Negative
MR: Negative |
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Term
| Clinically significant species of Klebsiella: Klebsiella pneumoniae |
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Definition
| Klebsiella pneumoniae (originally known as Friedlander's bacillus) most common Klebsiella isolate. Common cause of pneumonia and UTI, as well as wound infections and septicemias |
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Term
| Clinically significant species of Klebsiella: Klebsiella oxytoca |
|
Definition
Biochemically almost identical to Klebsiella pneumoniae, however it is indole positive.
Causes pneumonia, UTI, septicemia, wound infections |
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Term
|
Definition
NF of stools
Opportunistic pathogens |
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Term
| Colonial morphology of Enterobacter spp. |
|
Definition
BAP: Large, wet, mucoid colonies
MAC: May be rapid or late lactose fermenters
XLD: Yellow colonies, no H2S
EMB: Large purple/brown colonies |
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Term
| Enterobacter spp key biochemicals |
|
Definition
VP: Positive
MR: Negative
Motility: Positive
H2S: Negative
PAD: Negative
Indole: Negative
DNase: Negative |
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|
Term
| What tests are helpful when speciating Enterobacter spp? |
|
Definition
Lysine decarboxylase
Ornithine decarboxylase
Sorbitol
Inositol |
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Term
| Enterobacter clinically significant species: Enterobacter cloacae |
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Definition
Most common species of Enterobacter isolated
Causes pneumonia, UTI, wound infections |
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Term
| Enterobacter clinically significant species: Enterobacter agglomerans |
|
Definition
New name= Pantonea agglomerans
Causes nosocomial infections |
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Term
| Enterobacter clinically significant species: Enterobacter aerogenes |
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Definition
| Causes nosocomial infections |
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Term
| Enterobacter clinically significant species: Enterobacter sakazakii |
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Definition
| Similar to E. claoacae, but has a yellow pigment |
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Term
| Enterobacter clinically significant species: Hafnia alvei |
|
Definition
Only species in the genus Hafnia
Formerly known as E. alvei
Opportunistic pathogen in the immunocompromised host |
|
|
Term
| Differentiating biochemicals of Enterobacter cloacae |
|
Definition
Ornithine: Positive
Lysine: Negative
Sorbitol: Positive
Inositol: Negative |
|
|
Term
| Differentiating biochemicals of Enterobacter aerogenes |
|
Definition
Ornithine: Positive
Lysine: Postive
Sorbitol: Positive
Inositol: Positive |
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|
Term
| Differentiating biochemicals of Enterobacter agglomerans |
|
Definition
Ornithine: Negative
Lysine: Negative
Sorbitol: Variable
Inositol: Variable |
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|
Term
| Differentiating biochemicals of Hafnia alvei |
|
Definition
Ornithine: Negative
Lysine: Positive
Sorbitol: Negative
Inositol: Negative |
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|
Term
|
Definition
Opportunistic pathogen, especially in cancer patients
Causes pneumonia, septicemia, UTI, nosocomial infections
Highly resistant to antibiotics |
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Term
| Colonial morphology of Serratia spp. |
|
Definition
BAP: Large, mucoid colonies
MAC: Late lactose fermenters
XLD: Yellow colonies |
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|
Term
| Key biochemicals of Serratia spp. |
|
Definition
VP: Positive
MR: Negative
Motility: Positibe
H2S: Negative
PAD: Negative
DNase: Positive (*)
ONPG: Positive |
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Term
| What can be used to speciate the Serratia spp? |
|
Definition
|
|
Term
| Clinically significant Serratia spp: Serratia marcescens |
|
Definition
Can have red pigment
Nosocomial infections
Widespread in nature
Arabinose: Negative |
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|
Term
| Clinically significant Serratia spp: Serratia liquefaciens |
|
Definition
Environmental organism
May cause pnenumonia and nosocomial infetions in ICP's
Arabinose: Positive |
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