Unit 2: TBI and Stroke Flashcards
L1: Which pathologic finding? Concussion with catastrophic cerebral congestion and increased intracranial pressure due to pathologic dysregulation of intracranial vessels
Second Impact Syndrome
L1: Which pathologic finding? Downward pressure centrally that causes bilateral uncal herniation
Central herniation
L1: Which pathologic finding? Intracraial bleeding resulting from tearing of bridging veins that connect the cortical surface to the sagittal sinus
Subdural Hematoma
L1: Which pathologic finding? Protrusion of the cerebellar tonsils down into the foramen magnum, which can produce Cushing’s reflex by medullary compression
Tonsillar herniation
L1: Which pathologic finding? Uncus crosses the tentorial edge and pushes into the posterior fossa, compressing on midbrain, cerebral peduncle, and ispilateral, oculomotor nerve
Uncal herniation
L1:Which pathologic finding? Intracranial bleeding frequently resulting from fractures near the middle meningeal artery
Epidural Hematoma
L2: ______ infarcts appear on Diffusion Weighted Imaging (DWI) MRI.
New
L2: ______ infarcts appear on FLAIR T2-weighted MRI.
Old
L2: Imaging protocol for suspected stroke: _______ > _______ > ________
Noncontrast CT; Perfusion CT; CT angiogram
L2: On CT scan, hemorrhagic strokes appear _____ (whiter/darker), or more radio______, than surrounding brain tissue.
whiter; -paque
L2: On CT scan, ischemic strokes appear _____ (whiter/darker), or more radio_____, than surrounding brain tissue.
darker; -lucent
L2: On MRI, infarcts appear ______.
white
L2: On perfusion CT, at-risk tissue shows _____ time to perfusion, ______ time to peak, and ______ blood flow
increased; increased; normal
L2: On perfusion CT, completed infarcts show ______ time to perfusion, _______ time to peak, and ______ blood flow
increased; increased; decreased
L2: Surgical Treamtment for ischemic strokes
Endarterectomy
L2: Treatment for hemorrhagic stroke prevention
Aneurysm clipping or coiling
L2: Treatment for ischemic stroke resuscitation
t-PA
L2: What is a sign visible on imaging that demonstrates axonal injury has occurred?
Hemorrhage