What is a Stroke?

What is a Stroke?

A sudden loss of blood flow to the brain or bleeding inside the head leads to a stroke or a brain attack. Each stroke can cause brain cells to stop functioning or eventually die. When nerve cells in the brain die, the function of the body parts that they were controlling is either harmed or lost. Some people recover completely and others can be seriously disabled or can even die.

What are the symptoms of Stroke?

Numbness
Sudden numbness or weakness of face, arm or leg
Confusion
Confusion, trouble speaking
Vision and speech impairment
Vision difficulty
Trouble walking
Walking trouble
Dizziness
Dizziness
Poor balance
Loss of balance
Headache
Severe headache with no cause

Two main causes of stroke

  • Blocked artery
  • Leaking or bursting of a blood vessel

Diagnostic tests

  • Neurological exam
  • Brain imaging tests
    • CT
    • MRI
  • Blood flow tests
    • Carotid ultrasound
    • Transcranial ultrasound
    • Angiography
  • EKG or ECG

The aim of treatment for all stroke patients is to prevent further brain damage. If the stroke is caused by blocked blood flow to the brain

  • Tissue Plasminogen Activator
  • Blood thinning drugs – anticoagulants and antiplatelet medications
  • Carotid endarterectomy

If stroke is caused by bleeding

  • Drugs to maintain normal blood clotting
  • Surgery to decrease pressure in the brain
  • Surgery to fix blood vessels
  • Blocking off bleeding vessels
  • Drugs that prevent brain swelling