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32 Cards in this Set
- Front
- Back
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Corkscrew motility T🧠 |
Spirocheates and H. Pylori |
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Why Treponema has no animal or environmental reservoir? |
As it is anerobic |
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Cultured in the rabbit testicle |
Treponema |
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Syphilis modes of transmission |
1-sexual 2- transplantal 3- fresh blood transfusion |
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In w' stage of sephillis there is gumma? |
3ry |
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What is the difference BWVDRL & RPR |
In VDRL the flocculation is seen by microscopeWhile in RPR it can be seen by naked eye |
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Advantages of non trepomemal tests |
-inexpensive -rapid -simple |
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Diagnosis of syphilis in latent stage |
Serological only |
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Diagnosis of syphilis in 3ry stage |
Serological only |
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Why Treponemal tests are not used in follow up |
As treponemal tests remain active for life, even after successful treatment |
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Case of - ve VDRL and +ve treponima test. What is ur diagnosis |
Old infection |
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Diagnosis of conginital syphilis |
By detection of IgM antibody by EIA |
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Appear as irregular loose coils |
Borrelia |
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Appear as regular coils é pointed ends |
Treponema |
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Culture growth of borrelia |
Enriched (serum é tessue extract) |
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B. Hermsii transmission |
Tick borne From rodent and small animals to man |
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B. Recurrentis |
Lause born epidimic From man to man |
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Why does relapse occur in relapsing fever? |
Due to antigenic variation of borrelia |
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Causitive organism of lyme disease |
B. Burgdorferi |
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What is the only strain of spirocheates thats spreads non zoonoticaly? |
B. recurrentis |
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Has thin coiled motile rods with hooked ends |
Leptospira |
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Transmission of leptospirosis |
1-Contact é contaminated water enter through skin abrasion 2-ingestion of contaminated food or water |
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W' spirocheates cause jundice |
Leptospira |
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Diagnosis of weils disease |
1-history of expusure ro contaminated water or food 2- marked rise of IgM 3-isolation of organism from blood or csf |
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Has fried egg shaped colonies |
Mycoplasma Microscopic colony |
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Media of mycoplasma |
Serum enriched medium containing cholesterol |
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Why serology is the best way of mycoplasma diagnosis |
1-cant be stained by gram 2-long incubation period 3-pcr cannot distinguish between colonization and infection |
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Non specific test of mycoplasma |
Cold agglutinins above 1:128 is recent infection |
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Cases with false +ve cold agglutinins results |
1- malaria 2- hymolytic anemia 3- viral infection |
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False -ve cold agglutinins result |
50% of cases of m. Pneumonae |
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How to distinguish Bw +ve cold agglutinins w' diagnose mycoplasma infectkon and other false + cold agglutinins results? |
By primary atypical pneumonia |
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Heterophil phenomena 🧠T |
Rhomatic fever Treponima Cold agglutinins Cambilobacter |
