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Flashcards in PART 8 Deck (32)
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1
Q

sporotrichosis agent

2 forms

A

Agent: Sporothrix schenckii
Dimorphic fungus (2 forms:)

Yeast form → inoculated into wounds
Papules which may exude purulent material (initial form)
Nodules commonly found in the limbs reaching up to the chest area
Mold form
In the environment

2
Q

sporotrichosis dx

what shape can be found in WBC

A

Cytology
Giemsa stain
Cigar-shaped yeast inside the WBC
Culture of tissue or exudate
Skin biopsy

3
Q

Systemic antifungal suspension tx for sporotrichosis

A

Sodium iodide

4
Q

Most common skin tumor of horses
Locally invasive fibroblastic neoplasms
Head ears limbs
May arise spontaneously
Or may be found in areas with severe trauma to the skin

suspected causative agent

A

sarcoids

CA: Bovine papillomavirus (Suspected)

5
Q

skin bipsy and surgery is recommnede din sarcods t/f

A

f -Not recommended
Lead to fibroblastic sarcoids
Histopath: whirls or circular formation of fibroblast
Interracing bundle of fibroblast

6
Q

types of sarcoids
Warts
Benign neglect
Walang gagawin

“Proud flesh”
Tx: Surgical removal of tumors followed by the injections of the BCG vax

A

verrucous

fibroblastic

7
Q

types of sarcoids
Flat and circular; not all have bulging appearance
Benign neglect

A

occult

8
Q

Skin biopsy and surgery not recommended in occult and verrucous sarcoids.
Can lead to fibroblastic sarcoids
t/f

A

t

9
Q

tx of sarcoids

A

Surgical debulking

BCG (Bacille Calmette Guerin) vaccine
To stimulate immune response (host LOs and NKs) to tumor cells

Flunixin meglumine and Prednisone: given first (pretreatment) to prevent anaphylaxis risk due to vax 30mins before
Every 2-3 weeks for 4 tx

Cisplatin: 100% effective in some reports

10
Q

benign or malignant
Lesions: nodular, black in appearance
Observed at the ventrum of tail

A

melanoma

11
Q

melanoma
breeds predisposed + color + age

A

arabian
perceheron

Predilected in Gray colored horses
Even in dapple gray horses
Relationship between gray coat color and melanomas ; >15 yrs of age

12
Q

reporeted to cause regression in tumors (melanoma)

melanomas commonly interfere with the horses function t/f

A

cimetidin

f- No Tx
Unless tumors interfere with function
Rare that these tumors interfere with horse performance

13
Q

MOST COMMON NODULAR DZ IN HORSES

2 common proposed causes

nodules common in

A

EOSINOPHILIC GRANULOMA COMPLEX

reaction on insect bites
Other environmental allergens
Saddle / riding equipment

neck back trum

14
Q

size variatios f EGC

A

0.5-1cm

15
Q

EGC other terms

A

eosinophilic granuloma with collagen degeneration,
nodular necrobiosis of collagen or
collagenolytic granuloma

16
Q

EGC: ___due to chronic irritation and chronic insect bites = ____ texture

A

calcify

rock hard

17
Q

tx of EGC

A

Corticosteroids (high doses)
Antibiotics (secondary infections)
Surgical removal
For chronic cases; for calcified lesions

18
Q

Vesicles: fluid filled lesion <1cm in size
Vesicles → ulcerations/erosions
Suspect vesicle producing disease

A

MUCOCUTANEOUS VESICULAR DISEASE

19
Q

lesions on reproductive tract
Transmitted during coitus
PIc: Start at vesicles → ulcers (urethra, penis, vulva) → lack of libido due to pain

causative agent

A

Equine herpes coital exanthema
Caused by EHV-3 (Equid alphaherpesvirus 3)

20
Q

digansis of EHV3

A

appearance of lesions
skin biopsy
virus isolation

21
Q

tx of EHV3

A

Mainly symptomatic
Avoid corticosteroids

22
Q

transmission of EHV3

A

Coitus
Insects
Fomites
Inhalation

23
Q

Sore nose and sore mouth

A

vesicular stomatitis

24
Q

vesicular stoma:
major serotype
enzootic in 3 places
incubation period
causatve agent

A

rhabdovirus
Major Serotypes:
New jersey
Indiana
Enzootic in north, central, south america
IP 24-72 H

25
Q

vesicular stoma tx

A

Tx: symptomatic treatment
Soft diet (gruel) until oral lesions heal

26
Q

During surgery or poorly fitting riding equipment, tight/unevenly wrapped bandages → impedance to blood flow (capillaries)

A

Decubital ulcers
“Pressure sores”
Pressure sores, setfasts, saddle galls and saddle sores

27
Q

high risk for decubital ulcers

A

High risk: thin and emaciated animals
Lesions on bony prominences
Lesions start as hair loss → swollen → erythematous → lose elasticity → sloughing → hardened skin → necrosis
necrotizing skin ulcer

28
Q

decubital ulcers causes

A

May develop from:
Poorly fitting tack
Impedance to blood flow
Prolonged recumbency
Tight bandages

29
Q

lesions of decubital ulcers

hardening of skin or

A

Hair loss
Swelling
Erythema
Necrosis
Loss of elasticity
Sloughing of SC tissue
Hardening of skin “Parchment-like” skin
No distinct odor
Impedance of blood flow only (no infection)
If with secondary infection: will have odor due to pus

30
Q

tx of decubital ulcers

A

Wound management
Surgical debridement of necrotic skin

31
Q

Some body areas without skin
Secondary infection is common
Small defects → surgical correction
Large defects → already fatal especially in foals

other term

A

Aplasia cutis

Epitheliogenesis imperfecta

32
Q

Abnormal masses in areas without skin e.g., mucous membrane

Mm in eyes: ectopic skin with hair → infection or irritation of the eyes
Surgically removed if small cysts

occur in what breeds

A

Dermoid sinuses or cysts

thoroughbred