Stroke

A stroke or "brain attack" occurs when a blood clot blocks an artery (a blood vessel that carries blood from the heart to the body) or a blood vessel (a tube through which the blood moves through the body) breaks, interrupting blood flow to an area of the brain.  When either of these things happen, brain cells begin to die and brain damage occurs.

When brain cells die during a stroke, abilities controlled by that area of the brain are lost.  These abilities include speech, movement and memory.  How a stroke patient is affected depends on where the stroke occurs in the brain and how much the brain is damaged.

For example, someone who has a small stroke may experience only minor problems such as weakness of an arm or leg.  People who have larger strokes may be paralyzed on one side or lose their ability to speak.  Some people recover completely from strokes, but more than 2/3 of survivors will have some type of disability.

Every year, worldwide about 6 million people suffer  from a stroke.  In Russia more than 450 thousand, i.e., every 1.5 minutes someone from the Russians developed the disease. In Russia the number of large metropolitan acute stroke ranges from 100 to 120 per a day. Early, 30 days, mortality after stroke is 35%, about 50% of patients die in the course of year. Stroke is currently one of the major causes of disability. Less than 20% of survivors after cerebral stroke patients can return to their previous work. Among all types of ischemic stroke is dominated by the brain lesion. Ischemic stroke account for 70-85% of cases, bleeding in the brain - 20-25% of cases, nontraumatic subarachnoid hemorrhage - 5% of cases.

Mortality rate of stroke in Russia, Ukraine are- one of the highest in the world.

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