24 - Stroke

Question 1

Stroke Definition

Answer 1

rapidly progressive clinical symptoms and signs of focal, and at times global, loss of cerebral function lasting more than 24 hours or leading to death with no apparent cause other than that of vasculature origin

Question 2

Pathology of intracerebral haemorrhage

Answer 2

Opaque blood

large white section on CT

Question 3

Mechanism of ICH

Answer 3

o Charcot-bouchard micro aneurysms
o Microbleeds
o Haemorrhagic transformation of infarcts
o Vasculitis

Question 4

Causes of ICH

Answer 4

o Primary – Hypertension (microaneurysm)

o Secondary – Trauma, tumour, drugs, coagulopathy

Question 5

Complications of ICH

Answer 5

o Local damage
o Local mass effect/herniation
o Raised ICP
o Hydrocephalus

Question 6

What percent are ischaemic strokes

Answer 6

70-80%

Question 7

What is penumbra

Answer 7

ischemic but still viable cerebral tissue

Question 8

Cause of ischaemic stroke

Answer 8

).
o Pathologies – Atherosclerosis (50%), Arteriosclerosis (25%), Cardiac embolism/AF (15%), Carotid dissection (<5%), Other – Haematological, vasculitis

Question 9

Percent of haemorrhagic stroke

Answer 9

20-30%

Question 10

Hemianopia caused by strokes of where

Answer 10

MCA and PCA strokes