Discussion 3: Case Studies Flashcards
what skin function is adversely affected to cause death in a case of chytridiomycosis in a frog
osmoregulation
- leads to lethal electrolyte imbalances
- Bd infection –> loss of functional Na channels –> hypokalemia –> cardiac arrest/sudden death
how does amphibian skin differ from endothermic (mammalian species)
thinner and more vascular
- allows for osmoregulation and cutaneous respiration
which environmental factors negatively impact amphibians because of their unique integument
- increased water pH
- increased environmental temperature
- accumulation of environmental toxins
- global changes in water resources
what are signs of terminal stages of chytridiomycosis in frogs
- half closed eyes
- depressed attitude
- accumulation of shed skin
which skin layers are involved in third degree burns
epidermis, dermis, subcutis
site is no longer painful due to coagulated nerve endings
what requires IMMEDIATE management in burn patients
- pain
- electrolyte imbalances
- risk of secondary infections
what is a possible outcome of burns in 2-3 months
development of scar tissue that may interfere with normal functions of the animal
what determines the prognosis of burns
severity, location, immunocompetence, adequacy of supportive care
location: face, pelvic/perineal region, inguinal/axillary region
what is the initial life threatening consequence of thermal burns
electrolyte derangements
dehydration
sepsis
what structure is no longer intact in junctional epidermolysis bullosa
basement membrane zone
- completely separates dermis and epidermis
what disrupted skin functions are most deleterious in JEB
immune surveillance, barrier function, thermoregulation
which function remains working in JEB, but negatively impacts the foal
sensory perception
- allows pain to be felt
what will a foal with JEB likely die from if not euthanized
sepsis due to decreased barrier function of the skin
how does oil on an oiled bird affect buoyancy
disrupts the interlocking mechanism of the barbs, barbules, and hooks
inability to lock leads to disrupted:
- water proofing
- flight
- insulation
what may happen if the uropygial gland is affected
disruption of feather functions:
- lipid secretion
- antimicrobial production
- pheromone release
