The brain depends on a constant supply of blood for the oxygen and nutrients it needs to survive. Pipe-like vessels called arteries carry oxygenated blood from the heart and lungs to all parts of the brain. AIS can occur when blood flow through one of these arteries is blocked. Stroke robs the brain of oxygen, causing brain cells to become damaged or die. As a result, parts of the body controlled by those cells often become disabled.
Ischemic stroke represents 87% of all strokes. A large vessel occlusion is a severe and debilitating type of ischemic stroke as the clot occludes major arteries and prevents blood flow to significant portions of the brain.
IMPORTANT NOTE: This overview is provided for informational purposes only and should not be used as a substitute for talking with your doctor. Be sure to talk with your doctor for a complete discussion of this condition as well as the benefits and risks of any treatment options.