small animal neuromuscular disease

Question 1

what is the most common muscular disease of dogs

Answer 1

polyradiculoneuritis
(inflammation of the nerve roots)

Question 2

polyradiculoneuritis clinical signs

Answer 2

acute onset and rapidly progressive non ambulatory tetraparesis with no cranial nerve defects and no sensory deficits. Can affect respiratory muscles

Question 3

what causes muscle weakness due to reduced neuromuscular transmission

Answer 3

myasthenia gravis

Question 4

clinical signs of myasthenia gravis

Answer 4

muscle weakness
megaoespohagus in 90% of cases

Question 5

breed of cat predisposed to myasthenia gravis

Answer 5

abyssinians

Question 6

botulism clinical signs

Answer 6

tatreaparesis
locked jaw
gi dysmotility

Question 7

breeds predisposed to immune mediated myositis

Answer 7

(large breed dogs) newfoundland, boxer, GSD, labrador, golden retriever

Question 8

clinical signs of immune mediated polymyositis

Answer 8

pyrexia, stiffness, non ambulatory tetraparesis, muscle swelling

Question 9

immune mediated polymyositis treatment

Answer 9

predinsolone!

Question 10

what causes infectious myositis

Answer 10

neospora/toxoplasma

Question 11

who is mostly affected by infectious myositis and what are the clinical signs

Answer 11

puppies!
pelvic limb hyperextension
ascending paralysis of pelvic limbs

Question 12

what causes severe atrophy of the masticatory muscles

Answer 12

masticatory myositis

swollen and painful muscles followed by atrophy

prednisolone

Question 13

what causes masticatory muscle paresis with a characteristic dropped jaw appearance

Answer 13

trigeminal neuritis

Question 14

clinical signs of brachial plexus avulsion

Answer 14

monoparesis with cutaneous trunci reflex absent on ipsilateral side.
horners syndrome also present

Question 15

clinical signs of brachial plexus tumors

Answer 15

chronic progressive thoracic limb lameness, pain and muscle atrophy.
monoparesis
palpable mass sometimes