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Capno and Strepto
Micro Unit VII
| Question | Answer |
|---|---|
| How does Capnocytophaga relate to HACEK organisms? With what condition is it most commonly associated? | Canpnocytophaga is similar to HACEK organisms in that it needs CO2 for growth enhancement. However, it more commonly associated with septicemia, not endocarditis. |
| What media is best for Capnocytophaga? What notable characteristic does it present on the agar? | BAP and CHOC are best for culturing Capnocytophaga. It's most notable characteritic is it presents "Gliding Motility", where a haze of growth surrounds the colonies. |
| How is Streptobacillus moniliformia transmitted? What conditions does it cause? | S. moniliformia can be acquired through a rat bite, causing "rate-bite" fever, or through the ingestion of contaminated milk, food or water, causing "Haverhill Disease". |
| What media does Streptobacillus moniliformia require and what does this media consist of? | S. moniliformia requires molten or brain heart infusion media with yeast extract and 20% horse serum. |
| What Capnocytophaga species is of clinical significance and what are the biochemical reactions? | C. ochracea is the species of clinical significance and is Oxidase (-), Catalase (-), Urea (-), Spot Indole (-), and Glucose Fermenter. |
| What tests can be used to identify Streptobacillus moniliformia and how can it be treated? | S. moniliformia can be identified by Oxidase (-), Catalae (-), Nitrate (-), Indole (-), Motility (-), Urea (-), and LIA (-). Treatment of this organisms requires Penicillin and Streptomycin synergistically. |
| What disease does Capnocytophaga cause? How is this organism identified? | Periodontal disease and sepsis in immunocompromised patients. Capnocytophaga is identified using Maldi-Tof and/or RapID ANA system. |