Pathologies maladies spécifiques - Bovins nerveux Flashcards

1
Q

Polioencéphalomalacie, dx morpho

A

Nécrose corticale

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2
Q

Polioencéphalomalacie, étiologies

A

Déficience thiamine (B1)

Excès sulfates/soufre

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3
Q

Polioencéphalomalacie, lésions macro

A

Oedème et tuméfaction
Décoloration beige-jaune matière grise
Hernie cervelet possible
Cavitation si subaigu

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4
Q

Polioencéphalomalacie, lésions micro

A

Nécrose neuronale laminaire multifocale

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5
Q

Polioencéphalomalacie, dx

A

Lampe de Wood

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6
Q

Intoxication Pb, dommages directs à quelles cellules/tissus ?

A

Astrocytes, endothélium

Neurones

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7
Q

Lésions macro intox Pb

A

AUCUNE

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8
Q

Lésions micro intox Pb suraigue

A

AUCUNE

Parfois ligne osseuse dense // plaque croissance métaphyse osseuse

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9
Q

Lésions micro intox Pb aigue/subaigue

A

Oedème cérébral e/o nécrose laminaire corticale

Reins : inclusion AAR

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10
Q

Histophilus, lésions causées principalement dues à ?

A

VASCULITE ET THROMBOSES

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11
Q

Histophilus, types formes (3) ?

A

Méningo-encéphalite thrombotique (MET)
Myocardite
Avortement

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12
Q

Histophilus, organes touchés

A

Cerveau, MÉ, coeur, muscles squelettiques, reins

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13
Q

Myocardite (Histophilus) en conséquence à quel phénomène ?

A

Septicémie asymptomatique

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14
Q

Étapes myocardite à Histophilus et lésions associées

A

Infactus/myocardite dans muscles papillaires

Séquestre –> abcès –> fibrose focale

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15
Q

V/F

Histophilus ne requiert pas de milieu de culture spécial

A

FAUX

Bactérie fastidieuse

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16
Q

Listeria, trois formes ?

A

Nerveuse
Abortive
Septicémique

17
Q

Forme nerveuse Listeria

  • SC
  • Pathogénie
  • Lésions micro
A

Tête penchée, paralysie unilatérale, circling disease

Migration nc trijumeau vers tronc cérébral (suite à entrée cavité orale)

Micro-abcès tronc cérébral

18
Q

Forme abortive Listeria

  • Quel tiers gestation ?
  • Lésions macro
A

Derniers tiers

Foyers nécrose hépatique