12 Questions
What are the two main causes of a cerebrovascular accident (stroke)?
The two main causes of a stroke are blockage (ischemic stroke) and rupture (hemorrhagic stroke) in the arteries that supply blood and oxygen to the brain.
What are the two main types of ischemic strokes?
The two main types of ischemic strokes are thrombotic and embolic.
What is the key difference between thrombotic and embolic ischemic strokes in terms of their time of onset and course?
Thrombotic strokes typically occur during or after sleep and have a stepwise progression, while embolic strokes have a sudden onset and are not related to activity.
What is the most common type of stroke, and what percentage of all strokes does it account for?
Ischemic strokes are the most common type of stroke, accounting for approximately 80% of all cases.
What is a transient ischemic attack (TIA), and how does it relate to the different types of ischemic strokes?
A transient ischemic attack (TIA) is a temporary interruption of blood supply to the brain, which can precede both thrombotic and embolic ischemic strokes. TIAs occur in 30-50% of thrombotic strokes, but are less common in embolic strokes.
What are the key differences in the presentation and course of thrombotic and embolic ischemic strokes?
Thrombotic strokes have a stepwise progression, with signs and symptoms developing slowly, and often some improvement over time. In contrast, embolic strokes have a sudden onset, with signs and symptoms developing quickly, and a higher risk of recurrence without aggressive treatment of the underlying disease.
What is the most common type of stroke?
Cerebral infarction
What are the two main types of spontaneous intracranial hemorrhage?
Intracerebral hemorrhage and subarachnoid hemorrhage
What is the usual cause of an intracerebral hemorrhage?
Rupture of microaneurysms in brain arterioles due to prolonged hypertension
What can cause arterial spasm leading to cerebral ischemia in a subarachnoid hemorrhage?
The irritant effect of the blood in the subarachnoid space
What symptom is commonly associated with subarachnoid hemorrhage?
Headache
What factor increases the likelihood of fatality in intracerebral and subarachnoid hemorrhages?
The presence of coma
Test your knowledge about strokes and their causes, symptoms, and types. Learn about ischaemic strokes, haemorrhagic strokes, and classic stroke presentations.
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