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21 Cards in this Set

  • Front
  • Back
-sudden onset of neurological deficit caused by alteration in blood flow to a certain portion of the brain
-stoke like episode that resolves itself within 24 hrs
-most resolve in one hr
amaurosis fugax
-TIA characterized by transient monocular visual loss
-caused by alteration of blood flow in the opthalmic artery
what percentage of all strokes are primary hemorrhagic?
what are the symptoms of subarachnoid hemorrhage?
-sudden "thuderclap" onset of worst headache of life
-often loss of conciousness
what are the two main etiologies of subarachnoid hem?
-rupture of berry aneurism
-arteriouvenous malformation
what is an intracerebral hemorrhage?
-hemorrhage within the brain parenchyma
-clinical course is typically progressive over hours
what are the four main etiologies of ICH?
-cerebral amyloidosis
what percentage of strokes are primary ischemic?
large vessel occlusive stroke
-results from blockage of a large cerebral vessel due to a pathologic process arising within that vessel
what are the four main etiologies of large vessel occlusive stroke?
-traumatic dissection
-hypercoaguable states
small vessel occlusive stroke
-blockage of a small cerebral vessel due to a pathologic process arising within that vessel
-subcortical involving deep gray and white structures of the hemispheres
what are the three main etiologies of small vessel occlusive stroke?
-hypercoaguable states
embolic stroke
-blockage of a cerebral vessel by material that originated elsewhere
-characterized by maximal neurological deficit at onset
where do emboli most often occlude?
-middle cerebral artery or one of its branches
which type of stroke has a characteristic wedge pattern of infarct?
what are the two major sources for emboli?
-carotid artery atheromatous plaques
what are the sysptoms of a stroke involving the MCA?
-contralateral weakness/sensory loss involving the face and arm
-contralateral homonymous hemianopsia
what are the symptoms of a stroke involving the ACA?
-motor and sensory deficits of the contralateral leg
what are the symptoms of a stroke involving the PCA?
-contralateral homonymous hemianopsia
-possible contralateral loss of sensation and weakness
-amnesia if hippocampus is involved
what are the symptoms of vertebrobasilar stroke?
-face and extremity weakness and sensory loss