stroke prepared by: nik nur alaniah bt nik isa optometry1

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strokeprepared by nik nur alaniah bt
nik isa optometry/1
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TYPES OF STROKE
CAUSES OF THE STROKES
DEFINITION
STROKE
RISK FACTORS
PREVENTION
SYMPTOMS
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DEFINITION OF STROKE

• A stroke is the sudden death of brain cells
  due to a problem with the blood supply. When
  blood flow to the brain is impaired, oxygen and
  important nutrients cannot be delivered. The
  result is abnormal brain function. Blood flow to
  the brain can be disrupted by either a blockage
  or rupture of an artery to the brain. A stroke is
  also referred to as a cerebrovascular accident or
  CVA.

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Types of stroke
Ischemic
Haemorrhagic
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Causes of Ischemic stroke

• Arteries to the brain are blocked
• due to atherosclerotic deposits on the
  artery wall.
• Embolus (a fragment of material from another
  part of the body)
• when the embolus loose, travels in the
  blood stream to the arteries supplying the brain
  and blocks off an artery.

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Causes of Haemorrhagic stroke
Occurs when thinned out of abnormal blood vessels
in the brain burst.
The blood then moves out of the blood vessel to
exert pressure on the affected part of the brain
and its surrounding.
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High blood pressure
diabetes
obesity
Risk factors of getting stroke.
Raised blood cholesterol
smoking
Excessive alcohol consumption
Lack of exercise
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Difficultly speaking or understanding whats
being said
headache
Varying loss of sensation
confusion
Problems with balance and co-ordination of
movements
Weakness on side of the body
Weakness of facial muscles
Loss of consciousness in severe cases
Symptoms of having stroke.
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