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8 Cards in this Set
- Front
- Back
General characters of pseudomonas |
Non fementative, motile, gram negative Aerobic Oxidase positive |
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Why non fementitive |
Bec it's areobic |
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Cluture of pseudomonas aeruginosa |
Nutrient agar: (diffusable exopigemnts) yellow pyoverdin+blue pyocyanin》bright green colour characteristic of p. Blood agar: comolete hemolysis MacConkey's: pale lactose none fermenting colonies TSI: red butt and red slant Grape like(fruity) odour |
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Buochemical activities of p.aeruginosa |
Oxidase positive Carbohydrate non fermenter |
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P.aeruginosa is tha major cause of.....infection |
Hospital acquired (nosocomial) |
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Virulence factors of p.Aeruginosa |
Pilli Exotoxin A: tissue necrosis by same mech. as diphtheria toxin Endotoxin: related to negative bacilli Enz.: proteases and elatases Capsule: polysaccharide material allow the org to live in biofilm away from Ab and phagocytes |
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Treatment |
Combimed antibiotic treatment in serous infections (anti pseudomonal beta lactam eg piperacillin+ aminoglycosides e.g gentamyocin |
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Diseases |
Eye infection usually associated with lens Wound infection esp burns Follculitis External ear infection in swimmers , diabetics and elderly |