what is stroke
What is a Stroke
A stroke is any interruption in blood flow to the brain. This includes blockages cause by clots in a blood vessel or when a vessel bursts and blood leaks into the brain tissue causing damage. Without quick restoration of proper blood flow brain cells may die and permanent damage may occur.
About 80% of strokes are ischemic, which means they are caused by the interruption of blood flow to the brain due to a blood clot. The buildup of plaque (fatty materials, calcium and scar tissue) is involved in most ischemic strokes – narrowing the arteries that supply blood to the brain, interfering with, or blocking the flow of blood. This “narrowing” is called atherosclerosis
What is TIA?
A TIA, or Transient Ischemic Attack – which is also known as a “mini-stroke” – is caused by a temporary interruption of blood flow to the brain. The symptoms (warning signs) are similar to an ischemic stroke except they go away within a few minutes or hours. Many people can have a TIA without even knowing it. A TIA is an important warning sign that puts you at increased risk of a full-blown stroke.
Did you know?
Stroke is the third leading cause of death in Canada. Six percent of all deaths in Canada are due to stroke.
Of every 100 people who have a stroke
- 15 die (15%)
- 10 recover completely (10%)
- 25 recover with a minor impairment or disability (25%)
- 40 are left with a moderate to severe impairment (40%)
- 10 are so severely disabled they require long-term care (10%)
other stroke facts
- Each year, nearly 14,000 Canadians die from stroke.
- Each year, more women than men die from stroke.
- There are over 50,000 strokes in Canada each year. That’s one stroke every 10 minutes.
- For every 100,000 Canadian children under the age of 19, there are 6.7 strokes.
- About 300,000 Canadians are living with the effects of stroke.
- After age 55, the risk of stroke doubles every 10 years.
- A stroke survivor has a 20% chance of having another stroke within 2 years.