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LO5: Control & Regulatory Systems
Malfunctions
Stroke (Brain)
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Created by
Skye Matthews
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Cards (25)
What is a stroke primarily classified as?
A
cardiovascular
malfunction
How does a stroke affect the brain?
It directly affects brain
function
What are the two main types of stroke?
Ischaemic stroke
Haemorrhagic stroke
What happens during an ischaemic stroke?
Clots block
blood vessels
, starving the
brain
What is the result of an ischaemic stroke?
Brain cells
die due to lack of oxygen
What occurs during a haemorrhagic stroke?
A
blood vessel
ruptures
, cutting off blood supply
What is a transient ischaemic attack (TIA)?
A
temporary blockage
that
clears
itself
What percentage of strokes are ischaemic?
85%
What causes ischaemic strokes?
Blood clots
block blood flow to the
brain
What is a common cause of blood clots in ischaemic strokes?
Atherosclerosis
from fatty deposits
What is atrial fibrillation?
An irregular
heartbeat
causing
blood clots
What are haemorrhagic strokes also known as?
Cerebral
or
intracranial
haemorrhages
What happens during a haemorrhagic stroke?
Blood leaks into and around the
brain
What is the main cause of haemorrhagic stroke?
High blood pressure
What can cause a brain aneurysm?
Rupture of a
balloon-like
blood vessel expansion
What are some lifestyle factors that increase stroke risk?
Smoking
High-fat
, salt, and sugar diet
High cholesterol
diet
Excessive
alcohol intake
Obesity
Lack of
exercise
What are other risk factors for stroke?
Coronary Heart Disease (CHD)
Stress
High blood pressure
Age over
65
Family history
of stroke
What are the symptoms of a stroke?
Face
weakness
Arm weakness
Speech problems
Time to call
emergency services
What should you do if you suspect a stroke?
Call
emergency services
immediately
What is thrombectomy used for in stroke treatment?
Removes blood clots and restores blood flow
How does thrombectomy benefit stroke patients?
It restores blood flow to the brain
What is the purpose of surgical stents in stroke treatment?
To widen clogged arteries for blood flow
How do surgical stents work in treating strokes?
They inflate a
balloon
to widen the
artery
What are the two main treatments for stroke mentioned?
Thrombectomy
Surgical
stents
What are the steps involved in using surgical stents for stroke treatment?
Insert a tiny
balloon
into the
artery
Inflate the balloon to widen the area
Allow blood to flow freely to the brain