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Stroke and Cerebrovascular Disease in Neurology

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Stroke and Cerebrovascular Disease in Neurology

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Questions and Answers

What are the two main ways in which blood vessels can fail, leading to stroke?

Blockage (ischaemia) 2) Leakage (haemorrhage)

What percentage of strokes are ischemic (caused by blockages) versus hemorrhagic?

85% ischemic, 15% hemorrhagic

What are the main causes of embolic strokes, which carry a risk of hemorrhagic transformation?

Cardiac sources, aortic arch sources, and extracranial vessel sources

What type of stroke is more common in Asian and African populations compared to European populations?

Small vessel stenosis strokes caused by lipohyalinosis/arteriosclerosis Signup and view all the answers

What clinical features distinguish a focal stroke from a global stroke?

A focal stroke causes localized neurological deficits, while a global stroke causes encephalopathy (diffuse brain dysfunction). Signup and view all the answers

Why does the passage state that stroke is a clinical diagnosis, and that scans should not slow down time to intervention?

Stroke diagnosis is based on clinical symptoms and signs, and delaying treatment to get imaging could worsen outcomes. Signup and view all the answers