Saturday, 10 March 2012

What Is a Stroke?


A stroke is a sudden episode that may affect consciousness, sensation, and motion, which ends from a blockage or rupture of a blood vessel within the brain. It causes signs that final for at the least 24 hours. A stroke (recognized medically as a cerebrovascular accident or CVA) occurs when the blood supply to a part of the mind is suddenly interrupted or when a blood vessel in the mind bursts, spilling blood into the areas surrounding mind cells. Brain cells die once they not receive oxygen and nutrients from the blood or there is sudden bleeding into or around the brain.

Kinds of Stroke
There are two main types -- ischemic and hemorrhagic.
 The ischemic sort happens when there's a lack of oxygen- or nutrient-wealthy blood to a half of the brain for a protracted enough time period that brain tissue dies. This lack of blood move happens due to a severely narrowed or blocked artery within the neck or brain. The ischemic type makes up 80 percent of all cases.

The second kind is a hemorrhagic stroke. This type happens because of bleeding within the mind from a broken blood vessel. For every type -- ischemic and hemorrhagic -- the causes can vary

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