Lecture19: Stroke Flashcards
What happens in the vicious cycle of ischemic injury?
The intracranial pressure increases, which increases compression on cerebral vessels
What does the cell injury in ischemic strokes look like?
A dark hypoxic damage circle of irreversible damage, a lighter shade called ischemic penumbra of reversible damage, latin for “almost shadow”
What are the signs of ischemic stroke?
Urinary incontinence, drooping arms, slurred speech
What does the ischemic stroke look like after 12-24 hours?
Oedema
What does the ischemic injury look like in 24-48 hours?
Neutrophilic infiltration
What does ischemic damage look like after 2-10 days?
Histiocytic infiltration
What does the ischemic damage look like after 2-3 weeks?
Liquefactive necrosis
What does ischemic damage look like after 3 weeks-months?
Foamy macrophages
How does intraventricular hemorrhage occur?
Hypoxic pressure exerted on the baby’s head during delivery
How common is Intraventricular hemorrhage in babies?
40%
What is the fate of intracerebral hemorrhage?
A cavity with brown discolored rim
What is the most frequent cause of subarachnoid hemorrhage?
Berry aneurysms
What do berry aneurysms look like?
A thin-walled protrusion from the arteries that explodes at its apex
What defines arteriovenous malformations?
Poor communication of arteries and veins that are prone to rupture
What is the clinical presentation of a Hypertensive hemorrhage?
Headache, loss of consciousness
