exam 3 chapter 19

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alicia0309
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276000
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exam 3 chapter 19
Updated:
2014-06-02 23:35:07
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exam 3 chapter 19
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  1. Bacillus
    • Aerobic 
    • gram positive rods
    • spore forming
    • catalase positive

    • Anthracis- tetracycline, PCN, Cipro
    • Cereus- 24 hour bug no Tx
  2. Bacillus anthracis

    B. anthracis
    • spore forming
    • gram +
    • aerobic 
    • spores develop under all conditions except in living body
    • 3 types Cutaneous- thru skin, Pulmonary- inhale spores, Gastrointestinal- ingest spores
    • Treat with PCN, Tetracycline, Cipro
  3. Baccillus cereus
    • grows in food, spores survive cooking and reheating
    • 24 hour bug
    •  No Treatment

    Gram +, catalase +, Aerobic
  4. Clostridium
    spore forming only under anaerobic conditions

    gram + rods, catalase -
  5. Clostridium perfringens
    • Gas Gangrene
    • Alpha toxins cause RBC to rupture, edema, and tissue destruction
    • Collagnase, Hyalnase, DNase

    Gram + Rods
  6. Clostridium Tetani
    • common geriatric and IV drug users
    • spores usualy enter thru accidental puncture
    • Causes Tetanus - Lockjaw
    • Tetanospasm- Muscles contract uncontrollably

    Gram + rods
  7. Clostridium Difficile
    • Normal resident in colon in low amounts
    • caused by use of broad spectrum Abx 
    • Mild - replace fluids
    • Severe - Vancomycin or Metronidazole

    • Gram+ rods
  8. Clostridium botulinum
    • rare but severe
    • Botulin toxin blocks the release of Acetylcholine which is needed for muscle contraction
    • Usually Caused from Home Canning of Food
    • Spores are on food when gathered and if not prepared right or preservatives not added
    • TREAT with PCN
    • Gram + rods
  9. difference between Bacillus and Clostridium?
    • Baccillus is Aerobic
    • Clostridium is Anaerobic

    Both are gram + rods, and sporeforming
  10. Listeria Monocytogenes
    • resistant to Cold, Heat, Salt, pH extremes
    • can contaminate foods and grow in refrige
    • Listerosis caused by unpast dairy, poultry, meat
    • Treat with Ampicillin, and Trimethopriim/Sulfamethaxazole
    • Gram + rods, NonSpore Forming
  11. Eryipelothrix rhusiopathiae

    ER
    • Primary reservoir Tonsils of healthy Pigs
    • Treat with PCN, Erythromycin

    • multiplies to produce Erysipeloid DARK RED LESONS  
    • NonSpore-Forming, Gram +rods
  12. Corynebacterium diptheriae
    • healthy people can be carriers
    • Targets Heart and Nerves
    • Treat with Antitoxins or PCN or Erythromycin


    Gram +, irregular staining, Pleomorphic
  13. Propionibacterium Acnes
    • causes acne
    • common resident of pilosebaceous glands
    • Aerotolerant or Anaerobic
    • NonToxigenic

    Gram +, irregular staining, pleomorphic
  14. Mycobacterium
    • No Cell Wall
    • Acid fast staining
    • Gram +
    • Strict Anerobe

    • Mycobacterium tuberculosis
    • Mycobacterium leprae
  15. Mycobacterium Tuberculosis
    • strict anerobe
    • very resistant
    • passed by resp droplets
    • Mantoux Test (inject PPD), XRay
    • Treat with lengthy Large Range Abx

    Gram + rods, no cell wall
  16. Mycobacterium leprae
    • leporsy
    • 2 forms: Tuberculoid - shallow lesions, Lepromatous - deep nodular infection, causes disfigurement of face and extremities
    • Treat with long term combined therapy

    Gram + rods
  17. NTM
    • 3 types
    • m. avium- 3rd most common cause of death in AIDS pts
    • m. marinum- complex inhabitant, lesions develop after scrapping on swimming pool
    • m. paratuberculosis- raw cows milk

    Gram + rods

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