17852855
Description
Flashcards by Katerina Lalaouni, updated more than 1 year ago
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Created by Katerina Lalaouni
almost 5 years ago
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| Question | Answer |
| Describe microscopic appearance of Klebsiella..... | ~Gram - ~Rod shaped,non motile |
| General characteristics of Klebsiella strain: | !)Facultative anaerobes 2)Opportunistic bacteria 3)Lactose:+ 4)Catalase:+5)Oxidase:- 6)H2S:- 7)Polysaccharide based capsule 8)Commensals of the intestinal tract |
| What are the ideal cultivation conditions for the genus Klebsiella? | Facultative anaerobic conditions 35-37°C and ph 7.2 MacConkey agar:Pink(acid) XLD agar:Yellow(acid) |
| Besides obstetric equipment and cleaning devices which other sites are prone to infection from Klebsiella bacterias? | Fecal-contaminated equipment + clinical surfaces |
| What does the word diazotroph indicate for Klebsiella? | The ability to collect nitrogen gas ->into usable form e.g Ammonia |
| How does Klebsiella pneumoniae manifest within the organism? | Is found in the flora of the mouth,skin and intestine and WHEN inhaled-> destruction of the alveoli->creation of sputm(mucus from lower airways) |
| What does Klebsiella pneumoniae cause amongst species? | {HORSE}:Metritis,Abortions +generalised infection of foals {CATTLE}:Mastitis.,enteritis of calves+pneumonia in calves {PIG};Diarrhea in piglets+MMA syndrome {HUMAN}:Pneumonia,Eye infections,nosocomail infection |
| Which are the two typical antigens on the surface of Klebsiella pneumoniae? | K antigen:a capsular polysaccharide(CPS) AND O antigen:most important,component of the lipopolysacchride(LPS),protects against complement-mediated killing |
| Klebsiella pneumoniae vs Klebsiella oxytoca | Kleb.pneumoniae|Kleb.oxytoca Indole: - + Capsule: + + Diazotrophic ability: + - Growth on melezitose: - + Nosocomial infection : + - Hemolysis : Both non hemolytic |
| What is the reason behind Klebsiella's atb resiastance? | Plasmids=source of resistance genes against multiple antibiotics(Beta lactams) |
| XLD,TSI or chocolate agar for detection of this genus? | None of them. Klebsiella is easily identified through routine laboratory culture(37°C). Colonies simply on blood agar,No hemolysis large and very mucoid,ferment lactose OR MacConkey agar->Mucoid lactose fermentation |
| How is Salmonella and Enterobacter similar? | They are not. CITROBACTER produces H2S in TSI agar and makes it hard to distinguish from Salmonella! |
| Charactersitics of Enterobacter strains: | 1.Anaerobic 2.Motile 3.Rod shape 4.Lactose fermenters(after 48 h) 5.Catalase::+ 6.Oxidase: - 7.Lactose: + 8.Indole: - |
| Name two Enterobacter species | 1.Enterobacter cloacae 2.Enterobacter aerogenes |
| What are the top 2 to go destinations for Enterobacter and Citrobacter? | 1)One way ticket for Urogenital tract 2)Contaminated wounds |
| No 1 suggestion for treatment against Enterobacter: | Cefepime |
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