Cerebellum: Diseased State Flashcards
T or F: Disease of the cerebellum causes loss of function and paresis.
FALSE. Neither are caused.
What is the major clinical sign of a problem with the cerebellum?
ATAXIA- incoordination
What are the 3 types of Ataxia?
PVC
Proprioceptive Ataxia
Vetibular Ataxia
Cerebellar Ataxia
What is Dysmetria?
Inability to regulate rate, range, or force of movements
Drunk/abnormal
What is Hypermetria?
Overestimation of gait
- uninhibited flexors
- HIGHSTEPPING
What is a disease in cats that causes cerebellar hypoplasia?
Feline Panleukopenia (Feline parvovirus) -still live long and happy lives
What are some clinical signs associated with cerebellar disease?
Tremors Hypertonia/Hyperreflexia Nystagmus Truncal Ataxia/Sway during gait Broad based stance Opisthotonus
What is Opisthotonus?
A CS of cerebellar disease
Extended neck and thoracic limbs
It is hard to diagnose mild cerebellar disease or short legged animals. What test should you use during the neurological exam?
Stair Test: Observe gait going up and down stairs
Cerebellar disease is usually characterized by ipsilateral signs. When would you have cerebellar disease with contralateral signs?
When there is a lesion at the cerebellar peduncle
What is the cerebellar Menace Response?
A learned response, NOT a reflex
What does the menace response test?
Normal vision and facial muscle function
What is supposed to happen with the Menace response?
Animal closes eyes when there is a menacing gesture
If cerebellum is diseased, what happens with the Menace response?
Failure to close eyes with a menacing gesture
Most PRIMARY cerebellar diseases are _________
Congenital- from in utero viral infection
SLOWLY progressive- Cerebellar abiotrophy
What causes congenital cerebellar malformation in the cow? In the cat?
Cow= Bovine Virus diarrhea Cat= Feline Panleukopenia
Clinical signs present at birth
What species are affected by Cerebellar Abiotrophy?
Dogs and Horses
Kerry Blue Terrier, Chinese Crested, Arabians
Atrophy of the cerebellar folia is called?
Cerebellar Abiotrophy
Does Cerebellar Abiotrophy have clinical signs at birth of the puppy or foal?
No. Progressive Cerebellar Ataxia
What is Cerebellar Neoplasia?
A lesion of the cerebellar pundacle
What cerebellar disease causes ipsilateral cranial nerve signs and contralateral peripheral (body) signs?
Cerebellar Neoplasia
