Stroke Vs Tia Essay

1097 words - 4 pages

Cerebrovascular disease, a "stroke" or "brain attack", occurs when the blood supply to a part of your brain is blocked or severely reduced, by a blood vessel breaking or a clot, and the brain tissue is deprived of oxygen and nutrients. Within a few minutes to a few hours, the brain cells begin to die. When brain cells die during a stroke, abilities or functions controlled by that part of the brain are lost. These include speech, movement, and memory among others. How a stroke patient is affected depends on where the stroke occurred in the brain and how much the brain is damaged. For example, someone who has a small stroke may experience only minor problems like weakness of an arm or leg. People who have larger strokes may be paralyzed on one side or lose heir ability to speak. Some people recover completely from strokes but more than two-thirds of survivors will have some type of life long disability (Mayo). In the United States stroke is the third leading cause of death and a leading cause of adult disability (Mayo). Every year approximately 700,000 Americans experience a stroke and about 160,000 of these people die (Mayo). Presently fewer Americans die from strokes than 20 or 30 years ago. People controlling major risk factors such as smoking, high blood pressure, and high cholesterol are more likely the reason for the decline. 80% of strokes are preventable! (NAN)There are two levels of a stroke: The Transient Ischemic Attack (TIA) which is a minor stroke or sometimes called a "mini stroke" and a Cerebral Vascular Attack (CVA) which is a major stroke and also has sub categories of different types of strokes. The duration of symptoms and the determination of brain injury is the main difference between the TIA and CVA or stroke. Most people don't realize that the TIA exists and that there is such a thing as a "mini stroke" that can cause literally no harm.There are two types of stroke (or CVA or "brain attack"): an ischemic stroke, which is caused by too little blood in the brain, and a hemorrhagic stroke, caused by too much blood within the brain cavity. About 80% of strokes are ischemic strokes. These occur when blood clots or other particles block arteries to the brain and cause reduced blood flow (ischemia). Hemorrhagic strokes occur when a blood vessel in the brain leaks or ruptures. The escaped blood can compress or pinch nearby blood vessels, cutting off blood flow and depriving the surrounding tissue of oxygen. Hemorrhagic strokes occur less frequently than ischemic strokes, but they tend to affect larger areas of the brain. Symptoms of a hemorrhagic stroke may be more sudden and more severe, and these strokes carry a greater risk of death than ischemic strokes.Stroke symptoms are unexpected and develop suddenly, and may get worse over the next several hours or days. The symptoms usually affect only one side of the body because blood flow is cut off to only part of the brain during a stroke. One of the most common symptoms is a sudden...

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