Left-side Stroke

(Stroke, Left-side; Left Hemisphere Stroke; Stroke, Left Hemisphere)

Definition

The cerebrum is the largest part of the brain. It is made of a left and a right hemisphere. In most people, the left hemisphere is in charge of the functions on the right-side of the body. It is also involved in abilities such as the ability to speak, or use language.A left-side stroke happens when the blood supply to the left side of the brain is interrupted. Without oxygen and nutrients from blood, the brain tissue quickly dies.
cerebrum
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There are two main types of stroke: ischemic and hemorrhagic. An ischemic stroke is the most common type of stroke.

Causes

An ischemic stroke is caused by a blockage of the blood flow, which may be due to:
  • A clot from another part of the body like the heart or neck. The clot breaks off and flows through the blood until it becomes trapped in a blood vessel supplying the brain.
  • A clot that forms in an artery that supplies blood to the brain.
  • A tear in an artery supplying blood to the brain. Called an arterial dissection.
A hemorrhagic stroke is caused by a burst blood vessel. Blood spills out of the broken blood vessel and pools in the brain. This interrupts the flow of blood and causes a build up of pressure on the brain.
Hemorrhagic vs. Ischemic Stroke
factsheet image
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Risk Factors

Certain factors increase your risk of stroke but can not be changed, such as:
  • Race—People of African American, Hispanic, or Asian/Pacific Islander descent are at increased risk.
  • Age: Older than 55 years of age
  • Family history of stroke
Other factors that may increase your risk can be changed such as:Certain medical condition that can increase your risk of stroke. Management or prevention of these conditions can significantly decrease your risk. Medical conditions include:Risk factors specific to women include:
  • Previous pre-eclampsia
  • Use of birth control pills , especially if you are over 35 years old and smoke
  • Long-term use of hormone replacement therapy
  • Menopause
  • Pregnancy—due to increased risk of blood clots

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