St. Alphonsus Regional Medical Center
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Are There Different Types of Strokes?

There are two types of strokes. The most common is the ischemic stroke, which accounts for almost 84% of all strokes. Ischemic strokes occur when a blood vessel to the brain becomes blocked by a clot or fatty deposit. The blockage prevents vital blood and oxygen from reaching part of the brain, causing damage to the brain. It is estimated that at least 31% of ischemic strokes are caused by an embolus. An embolus is a clot that forms in another part of the body and travels in the blood vessel until it becomes lodged in the brain.

The second type of stroke is a hemorrhagic stroke. Hemorrhagic strokes occur when a blood vessel wall in the brain ruptures, causing bleeding into the surrounding brain tissue. Hemorrhagic strokes account for 16% of all strokes.

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Saint Alphonsus Regional Medical Center  |  1055 N. Curtis Road  |  Boise, Idaho 83706  |  208-367-2121

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