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9 Cards in this Set

  • Front
  • Back
what is a concussion?
a transient functional impairment with NO DEMONSTRABLE anatomic abnormality. transient amensia
what is a contusion?
a focus of necrosis at the crest of a gyrus, not in the sulcus. this should make sense, as the trauma occured near the surface!
epidural hematoma - list the facts
-always assoc w/ skull fracture
-usually middle meningeal a.
-lucid period after trauma, before major effects - bleeding occurs and Pressure is building up. large P is needed to have any major effect, thus these are not veinous
subdural hematoma - list the facts
doesn't require a skull fracture
-rupture of bridging veins. slow onset of symptoms. more common in elderly, as their brain atrophies and there is more subdural space for veins to move
multiple sclerosis - who/where
~20-40 yr olds, slow to progress, can affect myelin anywhere, diffusely. stain will show reactive astrocytes (gliosis). axons are preserved. acute rxn will have all inflammatory cells (not many PMNs). oligoclonal IgE in csf
what is the acute, rapidly progressing demyelinating disease?
Acute Disseminated Encephalomyelitis. like MS, it's autoimmune. unlike MS, it progresses very quickly.
what is central pontine myelinolysis
occurs after rapid correction of hyponatremia. used to occur in alcoholics upon treating them for low Na
periventricular plaques are associated with:
MS
demyelination around a vein?
seen in Acute Disseminated Encephalomyelitis. usually post infection, see perivenular demyelination