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39 Cards in this Set
- Front
- Back
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Aerobic non spore forming gram +ve bacilli |
Corynebacterium |
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Gram +ve bacilli characterized by cub shape |
Corynebacterium |
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Why bacilli of diphtheria appear beaded when stained with methylene blue stain |
Due to presence of metachromatic granules |
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Culture of c. Dephtheria |
Enriched media eg. Blood agar and loffelers serum Slective differential media (blood tellutite agar) |
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Corynebacterium colony on selective deferential media appears |
Gray/black |
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Why not all dephtheria is toxigenic? |
1- as not all dephtheria are lysogenic 2- as it is characteristic of prophage not bacterial dna |
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Transmitted by case or carrier 🧠 T |
Staph. Aureus Staph. Epidermidis Strept. Agalactia Strept. Pneumonae C.dephtheria |
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Componentes of local pseudomembrane |
Cell debris Infection products Fibrinous exudates |
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Complication of dephtheria (اسباب الوفاه) |
1-extension of pseudomembrane into larenx ▶️ airway obstraction 2-myocarditis ▶️heart failure 3-nerve paralysis (especially cranial n) |
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Must be done immediately to dephtherial patient |
Resp support Antitoxins |
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Differential morphological characteristic of lesteria from other corynebacterium |
Being motile |
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Can grow in cold temperature 4C |
Lesteria |
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The only listeria species that infect human |
Listeria monocytogenes |
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Listeria escape phogcytosis by ..... And escape immune defensive mechanism by.... |
Lesteriolysin O Actin rockets |
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Mode of transmission of listeria |
1- feces of animal 2-contaminated vegetables and milk 3-vertical transmission |
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Listeria has longer incubation periode than staph aureus |
As it invade the intestinal epithelium by itself not by its toxins |
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What type of food favorable by listeria |
Dairy products Under cooked meat |
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Can be gram +ve or - ve |
Gardnerella vaginalis |
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Associated with bacterial vaginosis |
Gardernella vaginalis |
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Laboratory diagnosis of gardnerella vaginalis |
Clue cells with almost abcense of lactobacilli |
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Anaerobic non spore forming gram +ve bacilli |
Propionibacterium Lactobacilli |
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Has a typecal morphology of diphtheroids |
Propionibacterium |
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Has probiotic effect |
Lactobacilli |
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Characteristic of genus of mycobacterium |
1-acid fasness 2- slow rate of growth 3-obligate aerobe |
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AFB florecence compared to zein neelsen method |
More sensitive Faster Less specific |
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Steps of Sputum processing in TB contaminated sputum |
1-liquifaction of Sputum 2-centrifugation of mycobacterium 3-decontamination of normal flora |
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What type of broth used in fluid media system in AFB culture |
Middlebrook broth |
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QuantaFERON test compared to Tuberculin test |
More spesific as it wont give false +ve resultes |
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Ist line drugs agains TB |
Isoniazid Rifambin Pyrenzemide Ethambutol. Streptomycin |
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Ttt of latent tb infection |
6 to 9 month izoniazid To patient who are recently turned +ve And to +ve patient who susbected to be imunocompramized |
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Why skin and superfacial nerves is the most affected by M. Leprae |
Is it grow best in low temp (30C) |
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How to replase heat in kinyoun method |
By phenol |
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1st line drugs against tb |
Refambin Isoniazid Pyrazinamide Ethambutol |
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Ttt of latent tb infection |
Izoniazid for 6 to 9 months to Resent +ve Or patient subjected to be imunocompramized |
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Resistance of NTM |
Much more than TB |
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Ttt of LL |
Refampicin clofazimine dapsone For 2 years |
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TL ttt |
Refampicin for 6 months |
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Most common site of reactivation of TB |
Apex of the lung |
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Route of administration of BCG |
Intradermally |
