Lecture 4 Flashcards
What are the 3 major arteries that provide the cerebrum with blood?
1) Anterior. 2) Middle. 3) Posterior.
What is a stroke?
The sudden appearance of neurological symptoms as a result of severe interruption of blood flow.
What are some stroke statistics?
1) In Canada, every 10 mins someone dies from heart disease or stroke
2) Stroke costs the economy 3.6 billion/yr.
3) 741 800 Canadians are living with stroke disability.
What are the 2 classes of stroke?
Ischemic- Blocked blood vessel, more common and less severe
Hemorrhagic- Burst blood vessel, more severe, less common.
What are the FAST symptoms of stroke?
F-face drooping
A- Arm weakness
S- Speech Difficulty
T- Time to call 911
What are the more precise symptoms associated with stroke?
Weakness on contralateral side of the body, slowed behaviour, short-term memory problems, vision problems, loss of coordination and balance.
Where is stroke most commonly found?
In the medial (middle) artery.
How is stroke treated?
Goal is to restore blood flow ASAP. Usually use tissue plasminogen activator (only effective for ischemic strokes).
What is tissue plasminogen activator (t-PA)?
Breaks down the blood clot- 24 hour window during which treatment is effective (lots of literature says 3).
What are some effects of stroke?
Over-excitation of neurons, increase in protein production, inflammation, diaschisis (neural shock)-areas connected to stroke cease to function, changes in metabolism.
When a neuron dies can it come back?
No. Which is why it’s important to protect the neurons at risk of death (ones closer to the stroke).
What is constraint-induced therapy?
When stroke patients experience learned non-use of an affected limb, this type of therapy forces them to learn to use it again-binds the unaffected limb in place and forces patient to use the affected limb.
