06 - Diagnostic Aids Flashcards

1
Q

(Skin Scrapings)

  1. skin scraping is indicated anytime the differential diagnosis includes what?
  2. cheap, easy, informative
  3. equipment needed (scalpel blade, mineral oil, slides, slips, microscope)
A
  1. microscopic ectoparastic diseases (eg. demodicosis, sarcoptic mange, and cheyletiellosis)
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2
Q

(Skin scrapings cont)

Just read circled portion on p30

but also answer these questions

  1. superficial scrapings covering a broad area are sufficient for what?
  2. To assure that adequate sample is obtained, scrape until you get what?
  3. deep scrapings are needed for what?
A
  1. surface dwelling mites such as Cheyletiella, Chorioptes, Demodex gatoi, demodex cornei
  2. small amount of blood from laceration
  3. deeper-dwelling parasites such as demodex canis, demodex injay and demodex cati
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3
Q

(B. Trichogram or Trichography)

(read through this section as well… will cover important points though)

  1. what is this?

(interpretation of abnormal findings)

  1. presence of broken tips =
  2. large melanin clumps =
  3. hyphae and spores =
  4. the presence of most or all hair shafts in telogen (rest) stage suggests what?
  5. what do anagen bulbs look like?
  6. telogen?
A
  1. analyzing plucked hairs
  2. excessive licking in feline self inflicted alopecia
  3. color dilution alopecia
  4. dermatophysis
  5. a diagnosis of telogen defluxion or endocrinopathy

(normal animals have mix of anagen and telogen hairs)

  1. rounded, smooth, shiny, soft
  2. club or spear-shaped, rough-surfaced, non-pigmented, straight
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4
Q

(C. Direct Examination of Hair and Scales for Dermatophytes)

just read circled portion on p31

A
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5
Q

(D. Wood’s Lamp Examination)

  1. just read on p31
A
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6
Q

(E. Cytologic Examination)

just read the rest until p37… seems silly to do flash cards on this stuff

A
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