SA Med MT II

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HLW
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175778
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SA Med MT II
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2012-10-05 17:04:24
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SA Med MT II
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SA Med MT II
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  1. What type of superficial pyoderma produces a moth-eaten appearance?
    Folliculitis
  2. What explains varying manifestations of staphylococcal folliculitis? 2
    • Varying toxins
    • Differing immune response (Type 1 IgE or Type 4 cell mediated)
  3. What type of reaction is seen in furrunculosis (deep pyoderma)?
    • Pustular exudative reaction in which purulent material is readily expressed
    • Nodular reaction
  4. What type of deep pyoderma dissects along tissue plains?
    Cellulitis
  5. When should you do antibiotic sensitivity testing for canine staphylococcal pyoderma?
    In area where there is incidence of methicillin-resistant staph is common
  6. How is bacterial overgrowth (surface pyoderma) usually managed?
    Topical/shampoo therapy
  7. How do you treat an underlying folliculitis in pyotraumatic dermatitis (surface pyoderma)?
    • Antibiotics
    • Short course of corticosteroids
  8. How are fold pyodermas (surface pyoderma) treated? 3
    • Clipping hair
    • Apply steroid/antibiotic cream
    • Permanent cure is surgical correction
  9. How long do you administer antibiotics for superficial pyodermas?
    • Impetigo: 15 days
    • Folliculitis: 15-20 days or longer
  10. How long should you administer antibiotics for deep pyodermas?
    Minimum of 30 days
  11. What are some useful antibiotics for pyoderma therapy? 4
    • Erythromycin
    • Lincomycin
    • Trimethoprim-sulfadizine
    • Cephadroxyl & Cephalexin
  12. What antibiotics are usually not effective against S. pseudointermedius infections? 4
    • Penicillin
    • Ampicillin
    • Amoxicillin
    • Tetracyclines
  13. Should corticosteroids be given along with antibiotic therapy in treating pyodermas?
    No
  14. What type of topical therapy is suggested for deep pyodermas?
    Povidone iodine bath
  15. What animal is the main reservoirs for MRSP?
    Dogs
  16. What animal is the main reservoirs for MRSA?
    Human
  17. What are two important things to remember when managing MRSs? 2
    • Ensure you give attention to underlying causes
    • Avoid last chance antibiotics
  18. What are some factors that predispose pyodermas to recurrence?
    • Atopic dermatitis
    • Tendancy to surface colonization (Seborrhoea)
    • Integrity of skin barrier is impaired
  19. How should you approach recurrent pyodermas? 6
    • Evaluate for seborrhoea
    • Look for Demodex
    • Check thyroid fx
    • Skin test
    • Elimination diet for food allergy
    • Immunological tests
  20. How should idiopathic recurrent pyodermas be managed? 3
    • Antibiotic therapy w/ repeated in vitro sensitivity tests
    • Antibacterial shampoos
    • Immunotherapy
  21. What type of equine skin disease is commonly seen in warmer months, is common in areas of the saddle, shoulders, lateral trunk, cervical areas, and distal limbs?
    Equine staphylococcal folliculitis ("Saddle sores", "Summer rash", and "Sweating eczema")
  22. How should equine staphylococcal folliculitis be treated? 2
    • Antimicrobial shampoos
    • Procaine penicillin
  23. What mycobacterial infection causes nodular skin disease in dogs and cats?
    Tuberculous mycobacteria
  24. What organism causes feline leprosy, producing nodular, granulomatous lesions especially the head and ears?
    M. leprimurium
  25. What bacterial skin disease of dogs produces nodular, granulomatous lesions of the head and ears and has been reported in Australia and the Western USA?
    Canine leprosy (diagnosed by PCR)
  26. What is a fungal infection of the Stratum corneum, hair or nail caused by Microsporum, Trichopyton, or Epideropyton?
    Dermatophytosis
  27. What is the most common dermatophyte in dogs and cats?
    Microsporum canis
  28. What is the most common dermatophyte in horses? 2
    • Trichopyton equinum
    • Trichopyton mentagraphytes
  29. What is the most common dermatophyte in guinea pigs, hamsters and rabbits?
    Trichopyton mentagraphytes
  30. What is responsible for self cure of dermatophytosis, usually within 60-90 days?
    Cell-mediated immunity
  31. What are some different ways to diagnose dermatophytosis? 3
    • Wood's Lamp
    • Microscopic examination of plucked hairs
    • Fungal culture (most reliable)

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