Brainstem and CN Dysfuction

How is Listeria monocytogenes transmitted?

Rotting vegetation w/ pH 5.4 (poor silage management)

Milk to humans- ZOONOTIC

What are potential signs of listeriosis?

Septicemia in neonates

Diarrhea in young

Opthalmitis/ uveitis

Neuro dz

What part of the brain does listeria affect?

Caudal brainstem/spinal cord

Neuro signs of listeria are often ___ in presentation?

Asymmetric

What are neuro signs of listeria?

CN5-12 affected

-dropped jaw/ facial analgesia

-Medial strabismus

-Pitosis/ loss of menace

-nystagmus/head tilt/ circling towards lesion

-Dypsnea

-Tongue paralysis/protrusion

How is listeria dx?

High CSF TP and WBC

microabcesses in brain stem

What is tx for listeria?

Oxytet

POTASSIUM pen G

-cross bbb

What is the cause of TEME?

Histophilus somni - Common in feedlots

TEME will affect ___ organs?

Multiple organs - myocarditis, pleuropneumonia, laryngeal abscess, poly arthritis and serositis, otitis, etc...

What are neuro clinical signs fo TEME?

Depression

Consious proprioception deficits

Head tilt

Nystagmus/ blindness

Opisthotonous - star gazing

How is TEME dx?

Hemorrage/ xanthochromia in CSF

Elisa

What are tx for TEME?

Tetracycline

Pen

Ampicillin

(Aminoglycosides - voluntary ban)

Otitis media/ interna is most common in which large animals?

Sheep/ cattle

What are the five resp pathogens that can cause secondary Otitis media/ interna?

M. hemolytica

P. multocida

H. somni

Corynebacterium pseudoTB

Mycoplasma

What are clinical signs of O.M.?

Head shaking

Hematoma

Ear droop

Head tilt/ circling

Nystagmus/ facial paralysis

How is most O.M tx?

Florfenicol

Tetracyclines

Macrolides

Pen - not for mycoplasma

What is the ear mite of sheep and goats?

Psoroptes cuniliculi

What is tx for ear mites in LA?

Ivermectin inj

What can cause cerebellar hypoplasia?

BVDV - 90-170 days of gestation

What are signs of Cerebelar hypoplasia?

Ataxia

Opisthotonous

wide base stance

Coarse intentional tremors

Hypermetria

Hyperreflexia