Neurology Flashcards
What % of dogs/cats with transtentorial herniation had no direct clinical signs of herniation?
JVIM 2016: 75%
What is a minimally invasive means of detecting high ICP?
JVIM 2018: Transcranial doppler ultrasound, Increased ratio of systolic to diastolic mean velocity was associated with MRI findings of increased ICP
What was the agreement in stereotactic brain biopsy versus traditional biopsy?
JVIM 2019: High agreement for diagnosis (K - 0.95) but grade agreement for gliomas was only k = 0.47
Is cognitive dysfunction progressive? what is a potential biomarker?
JVIM 2015: Progressive signs in 50% of affected dogs and some pre-clinical dogs developed signs. Potential marker is A-Beta (amyloid beta) 42, higher in affected dogs
Can CT be used to diagnose Chiari malformation?
JVIM 2015: Yes - can identify herniation. Though the length of the herniation seen is longer than in MRI but this doesn’t appear to be significant for management. MRI is still recommended as the test of choice for screening for syringomyelia.
Can indentation in the cerebellum be seen in normal dogs?
JVIM 2015: yes, in 44% of asymptomatic dogs in this study. Recommended against using it to diagnose chair malformation. herniation was not seen in asymptomatic dogs.
Apart from chiari malformation/syringomyelia, what other structural difference can this breed have in its spinal cord?
JVIM 2019: Spinal cord terminates more caudally, dural sac termination more caudally (later associated with thoracolumbar syringomyelia)
What are some signs seen more commonly in CCKS with large syrinxes, versus CM dogs that may not have synrinxes or have smaller ones?
JVIM 2019: phantom scratching, scoliosis, sensory and motor signs. Vocalisations and other signs of pain could be seen in even dogs without syrinxes.
What are the most common VP shunt complications in dogs and cats respectively?
JVIM 2019: Dogs - obstruction, 10%. Cats - coiling of the shunt - 15%. Most common in the 6 months post placement
Nova Scotia Duck Tolling retrievers can get what sort of brain disease associated with rapid eye movement sleep behaviour?
JVIM 2016: Degenerative encephalopathy, autosomal recessive, affected the caudate nuclei and brainstem/spinal cord axons.
What is the expected progression for Lagottos with juvenile epilepsy?
JVIM 2015: Most will go into remission for seizures. However, this study showed more excitability and inattention in these dogs compared to controls
What factor was associated with a better prognosis for Italian Spinone diagnosed with epilepsy?
JVIM 2015: Starting AEDs after the second seizure rather than 3+. Clusters associated with worse prognosis
What gene region was found to be associated with hereditary ataxia in Scottish terriers?
JVIM 2017: CFA X
What is Lafora’s disease? What breed can be affected? What are the CSx?
JVIM 2021; Lysosomal storage disease. Lafora protein absent, leading to branched precipitous glycogen. Seen in Beagles secondary to NHLRC1 gene. CSx: Myoclonus, seizures, behavioural abnormalities. Usually a normal life span, onset of CSx in middle age (8yo)
What are the features of Paroxysmal dyskinesia in Border terriers?
JVIM 2017: Dystonia, muscle fasciculations and falling over. Some responded to AED, some responded to gluten free diet
What is gangliosidoses a disease of? what is the pathogenesis and a breed affected?
JVIM 2018; storage disease of ganglioside lipids. Two forms; GM1 = deficiency of beta-galactosidase. GM2 = B-hexosaminidase deficiency. Shiba Inu get both types
What evidence is there to suggest MUO is an immune mediated disease?
JVIM: No link to infectious agent (in this time period, -ve Bartonella paper and broader search for infectious organisms).
Another paper found some dogs positive for Anti-N-methyl-D-aspartate receptor antibodies (neuronal surface protein)
What is the significance of increased lactate on CSF?
JVIM: Weak positive correlation with nucleated cell count
Are thoracolumbar and cisternal CSF samples equivalent?
JVIM 2019: No. Significant differences noted for TNCC for cervical and thoracolumbar lesions (not brain). Cisternal tap considered likely to have missed diagnosis for TL lesions.