Every 3.3 minutes, someone dies of one. Stroke is the third leading cause of death behind diseases of the heart and cancer, and is a leading cause of serious, long-term disability. Each year about 600,000 people suffer a new or recurrent stroke. In 1996 stroke killed 159,942 people and left many of those who survived with severe disability. It can make the difference between life or death and in the quality of life for a stroke survivor.
Treatment can be more effective if given quickly.
Early detection and immediate treatment of stroke may prevent permanent brain injury. A stroke is similar to a heart attack. It occurs when a blood vessel bringing oxygen and nutrients to the brain bursts or is clogged by a blood clot or some other particle. This rupture or blockage keeps part of the brain from getting the oxygen it needs. Without oxygen, the nerve cells in that area can't function and die within minutes.