Clinical Neuro Flashcards
(63 cards)
1
Q
Diagnostic approach to sudden death in sheep
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2
Q
What kills suddenly in sheep?
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3
Q
Diseases causing sudden death in sheep in Australia
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4
Q
Organism, source, risk factors?
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5
Q
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6
Q
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7
Q
Sudden death sheep, what would added to diagnosis?
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8
Q
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9
Q
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Malignant Oedema (Big Head)
10
Q
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11
Q
Diagnosis of Clostridial Diseases
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12
Q
Treatment and Control of Clostridial Diseases
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13
Q
Important Clostridial disease
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14
Q
Anthrax Epi
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15
Q
Anthrax Diagnosis
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16
Q
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17
Q
Phalaris PE like Sudden Death
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18
Q
Other Phalaris Toxicities
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19
Q
Blue Green algae
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20
Q
Cyanide Poisoning
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21
Q
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22
Q
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23
Q
Nitrate poisoning
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24
Q
Nitrate poisoning diagnosis and treatment?
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25
Other causes of sudden death
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27
Diagnosis of staggers
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Staggers syndromes
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Aetiology/Pathogenesis
\* Tryptamine alkaloid neurotoxins in plant affect midbrain function
\* Deficient/ marginal cobalt areas
\* All ages affected
\* n.b. different syndrome to acute toxicity
Epi
\* Autumn- winter
\* onset
- weeks-months grazing
- can be delayed
\* Variable morbidity, low direct mortality
\* May recover or signs persist
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Perennial Ryegrass Toxicosis
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Mgt and prevention of Perennial Ryegrass Toxicosis (PRGT)
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Annual Ryegrass Toxicity
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ART: Diagnosis
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ART Tx and Prevention
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Plant poisonings causing CNS signs
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Hairy Shaker Disease
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Border Disease Pathogenesis: Stage of pregnancy
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Border Disease Diagnosis and Treatment
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Common Diseases Causing Lingering Deaths
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Lingering Deaths
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Lingering Deaths with Neuro Signs
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Polioencephalomalacia Clinical Signs
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Polioencephalomalacia
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Outbreak Case in Drought Feedlot
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Overview of listeriosis
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Focal Symmetrical Encephalomalacia
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What's your diagnosis and treatment?
50
What's a good way to differentiate preg tox from hypocalcaemia in the early days?
Preg tox mentally dull-- where they blur together is the later stages of hypocalcaemia
\* you can see hypocalcaemia in non-pregnant, non-lactating sheep if they don't have good calcium stores
\* If you even have any suspicion of hypocalcaemia then give 4 in 1
51
Causes of recumbency in an ewe
Preg tox-- energy intake \< requirements
Hypocalcaemia- can't maintain serum Ca
Conditions often occur together
52
Lower lamb birth weights
More deaths from mismothering and/or exposure
poorer milk supplies and lamb growth rates
53
Differentiate between PT and hypoCa in the field? Clin exam, Response to 4 in 1 tx (60+ mL IV), clin path
54
Differentiate between PT and hypoCa-- further hx/ extra exam, more tx and prevention
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Don't muster ewes in the last month (especially the last 2 weeks) of gestation!!! Greater risk for hypocalcaemia
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Stop calcium the week before lambing-- switch on calcium homeostasis
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Why did I diagnose preg tox in these ewes?
Ewes down for several days
no hx of interrupted grazing
moderately dull
concurrent cause of lameness despite good FOO
To confirm: confirm ketonuria
Tx: hay, a/bs, flunix, ketol
Favourable prognosis
Other potential causes of recumbency: parasitism, mastitis, hypoMg, Botulism, spinal abscess
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Capeweed- brown MM because nitrate poisoning-- sunny day at risk
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Patterson's curse- purple flowers
pyrrolizadine alkaloids-hepatotoxic, jaundice, lingering death
63
Barley grass- penetrate the fleece of sheep- cause grass seed abscesses
Annual grass-- nutritional content decreases by the end of the year
