Smith 2 - Manifestations of Dz Flashcards
Most likely cause of epistaxis in cattle
CVCT - caudal vena cava thrombosis
CVCT
culminates in rupture of pulmonary artery aneurysm into a bronchus
tachypnea, lethargy, painful cough, melena, anemia –> red foamy d/c, severe resp distress
Toxic Causes of Epistaxis in Ruminants
mercury, arsenic, warfarin, diphacinone, furazolidone, trichloroethylene-extracted feed, oak/acorn, bracken fern, moldy sweet clover, phytogenous selenium, oxalate, stachybotryotoxicosis, mycotoxicosis
Toxic Causes of Epistaxis in Horses
arsenic, warfarin, dicoumarol, stachybotrys, plants, moldy sweet clover, PA, fiddle neck, tansy ragwort
Toxic Causes of Cough in Horses
crofton weed, a-naphthyl thiourea, pentachlorophenol, organophosphate, carbamate
Common Causes of Cough in Ruminants
mannheimia hemolytica / pasturella multocida shipping fever, enzootic calf pneumonia histophilus somni pneumonia lungworm chronic abscesses - arcanobacterium pyogenes IBR, BHV-1 BRSV parainfluenza virus 3 mycoplasma pneumonia necrotic laryngitis / calf diphtheria
Toxic Causes of Cough in Ruminants
organophosphate, carbamate, mercury, iodine, insect fogging, levamisole (O/C), nitrogen dioxide, hairy vetch, sneeze weed, aflatoxins (C)
Drugs that cause increased temp
penicillins, sulfonamides, erythromycin, antihistamines, procainamide, quinidine, amphotericin b
Toxins causing increased temp in the horse
cantharidin, selenium, arsenic, mercury, chlorinated hydrocarbons, dinitrophenol, propylene glycol, trichloroethylene extracted feed
Plant Toxins causing increased temp in the Horse
PA, algae, castor bean, water hemlock, jimsyn weed, mycotoxins
Toxins causing increased temp in Ruminants
Arsenic, selenium, mercury, zinc, oil, kerosine, chlorinated hydrocarbons, iodine, paraquat, dinitrophenol, propylene glycol, trichloroethylene extracted feed, halothane
Plant Toxins causing increased temp in Ruminants
fescue, ergot, PA, algae, brassica, bracken fern, castor bean, water hemlock, milkweed, buttercup, rhododendron, gossypol, jimsyn weed
Infectious causes of Fever in the Horse
URT virus, strangles, pneumonia, GI parasites, enteritis, salmonella, PHF, DPJ, Endotoxemia, septicemia, septic arthritis, osteomyelitis, tracheal. abscess, peritonitis, tetanus, cellulitis / tenosynovitis, occult abscess, tumors
Infectious causes of fever in Ruminants
mastitis, metritis, pneumonia, hardware, peritonitis, septic neonate, GI toxemia, enteritis, abscesses, endocarditis, listeria, tetanus, BVD, foot rot, otitis media or interna, clostridial infections, histophilus somni, mycoplasma, m. Bovis, verminous pneumonia
Neoplastic causes of fever
ALL: lymphosarsoma
Horses: metastatic melanoma, SCC, fibrosarcoma
Causes of hemoptysis in ruminants
CVCT, aspiration pneumonia, pharyngeal/retrop abscess or trauma, thoracic trauma, FB, pulmonary aspergilliosis
Cyanosis
Hb saturation <80%
PaO2 usually <40mmhg
must have adequate Hb concentration
Causes of increased capillary permeability
trauma, infection, Endotoxemia, hypersensitivity vasculitis
Causes of increased hydrostatic pressure
CHF, venous thrombosis, liver dz obstructing portal vein, lymphadenopathy, cranial mediastinal mass, limb immobilization
Causes of enlarged LNs in ruminants
Caseous lymphadenitis - corynebacterium pt
Lymphosarcoma - bovine leukosis virus
Abscess / cellulitis
Causes of melena in Ruminants
abomasal ulcer, intussusception
VS
- cattle, horses, rarely sheep
- vesicles -> large ulcers, tongue involved
- teats and feet too
Bluetongue
- sheep, rarely goats or cattle
- large oral ulcers, esp dental pad and tongue, + gen vasculitis
- coronitis, muscle degeneration, lameness, pulmonary edema, face and ear edema
Contagious Ecthyma (Orf)
- sheep, goats
- proliferative scabby lesion on lips, fleshy growth on gums
- can be on dams teats
Bovine papular stomatitis
- round, dark red, raised papule on muzzle and hard palate
- sometimes esophagus
Foot-and-mouth
- Cattle, sheep, goats
- vesicles -> large ulcers
- teats and coronary bands
BVD/MD
- ulcers on hard palate, erosive stomatitis
- skin lesions, corneal edema, enlarged LNs, pneumonia, esophageal lesions, diarrhea
MCF - malignant catarrhal fever
- cattle and bison
- erosive stomatitis with ulcers, gen vasculitis
- purulent nasal discharge, corneal edema, enlarged LNs, cracking skin, CNS signs, severe D+, high fever
Pestes des Petits ruminants (PPR)
- sheep and goats
- erosive stomatitis
- severe D+, purulent ocular and nasal d/c
Alimentary IBR
- calves
- gray pinpoint pustules on soft palate and nares
- MINIMAL oral lesions
- rhinotracheitis, conjunctivitis, pneumonia
Icterus in Ruminants - Liver
PA, aflatoxicosis, fatty liver / fat cow syndrome
Hemolytic Icterus in Ruminants
Lepto, anaplasmosis, bacillary hemoglobinuria, piroplasmosis, babesiosis
anaplas = RBCs in cattle but neutrophils in horses!
Lesion Location - Ataxia
spinocerebellar tracts, spinal cord, brainstem, vestibular, cerebellum