06 - Diagnostic Aids Flashcards
1
Q
(Skin Scrapings)
- skin scraping is indicated anytime the differential diagnosis includes what?
- cheap, easy, informative
- equipment needed (scalpel blade, mineral oil, slides, slips, microscope)
A
- microscopic ectoparastic diseases (eg. demodicosis, sarcoptic mange, and cheyletiellosis)
2
Q
(Skin scrapings cont)
Just read circled portion on p30
but also answer these questions
- superficial scrapings covering a broad area are sufficient for what?
- To assure that adequate sample is obtained, scrape until you get what?
- deep scrapings are needed for what?
A
- surface dwelling mites such as Cheyletiella, Chorioptes, Demodex gatoi, demodex cornei
- small amount of blood from laceration
- deeper-dwelling parasites such as demodex canis, demodex injay and demodex cati
3
Q
(B. Trichogram or Trichography)
(read through this section as well… will cover important points though)
- what is this?
(interpretation of abnormal findings)
- presence of broken tips =
- large melanin clumps =
- hyphae and spores =
- the presence of most or all hair shafts in telogen (rest) stage suggests what?
- what do anagen bulbs look like?
- telogen?
A
- analyzing plucked hairs
- excessive licking in feline self inflicted alopecia
- color dilution alopecia
- dermatophysis
- a diagnosis of telogen defluxion or endocrinopathy
(normal animals have mix of anagen and telogen hairs)
- rounded, smooth, shiny, soft
- club or spear-shaped, rough-surfaced, non-pigmented, straight
4
Q
(C. Direct Examination of Hair and Scales for Dermatophytes)
just read circled portion on p31
A
5
Q
(D. Wood’s Lamp Examination)
- just read on p31
A
6
Q
(E. Cytologic Examination)
just read the rest until p37… seems silly to do flash cards on this stuff
A