CVA

Question 1

TIA

Answer 1

• usually linked to atherosclerotic thrombus causing temporary blood flow interruption
• most often in carotid and vertebrobasilar arteries
• may indicate future CVA

Question 2

Stroke in Evolution

Answer 2

CVA usually caused by thrombus that gradually progresses.

Total neurological deficits not seen for 1-2 days after onset

Question 3

Causes of stroke (%)

Answer 3

Ischemic - 80-90%

Hemorrhagic - 10-20%

Question 4

What percentage of ischemic strokes are caused by embolus?

Answer 4

20%

Question 5

Characteristics of embolus stroke

Answer 5

• MCA most commonly affected (cardioembolus from internal carotid)
• sudden onset of occlusion > higher permanent damage of distal tissues
• often presents with HA

Question 6

Characteristics of thrombotic CVA

Answer 6

• variable presentation

- usually occurs during sleep or upon awakening from an MI or post-surgically

Question 7

Characteristics of hemorrhagic stroke

Answer 7

• rupture in blood supply
• often precipitated by HTN or trauma
• symptoms: HA, vomiting, high bp, abrupt onset of sxs
• worst outcomes