Preventing Stroke :Recognize the Type of Stroke
Stroke cases increased in developed countries like America, where obesity and junk food has become an epidemic. Based on U.S. statistics, every year there are 750,000 new stroke cases in the United States. It means that every 45 minutes, there was one person in America who suffered a stroke.
Stroke is the rapidly loss of brain function due to disturbance in the blood supply to the brain. Stroke can be caused by ischemia i.e the lack of oxygen and glucer supply caused or thrombosis or embolism or due to bleeding (hemorrhagic). As a result, the affected area of the brain can not function, causing an inability to move one or more limbs on one side of the body, inability to understand or formulate speech or inability to see one side of the visual field
Stroke divided into two types: ischemic stroke and hemorrhagic stroke. In ischemic stroke, the blood flow to the brain stopped because atherosclerosis (cholesterol buildup in blood vessel walls) or a blood clot that has clogged the blood vessels to the brain. This is the most type of stroke or 83% type of stroke.
In hemorrhagic stroke, broken blood vessels that block normal blood flow and blood seeped into an area in the brain and damage it. Nearly 70 percent of cases of Acute hemorrhagic strokes occur in people with hypertension.
In ischemic stroke, blockage can occur along the arterial route leading to the brain. Blood to the brain is supplied by two arteria the internal carotid and two vertebral arteries. These arteries are branches of the aortic arch heart.
An atheroma (fatty deposits) may form in the carotid arteries causing reduced blood flow. This situation is very serious because each carotid artery normally provides blood to most of the brain. Fat deposition could also separated from the artery walls and flows in the blood, clogging arteries and smaller.
Carotid arteries and the vertebral artery and its ramifications could be blocked due to blood clots that come from elsewhere, such as the heart or a valve. This kind of stroke called a cerebral embolism (embolism = occlusion, cerebral blood vessels of the brain =) The most frequently occurs in patients who had heart surgery and people with heart valve abnormalities or heart rhythm disturbances (especially atrial fibrillation).
Fat emboli rarely cause stroke. Fat emboli formed when fat from a broken bone marrow released into the bloodstream and eventually joined in an artery.
Stroke can also occur when an infection causes inflammation or narrowing of blood vessels leading to the brain. The drugs (eg cocaine and amphetamines) can also narrow the blood vessels in the brain and cause strokes.
Blood pressure that drops suddenly can cause reduced blood flow to the brain, which usually causes a person to faint. Stroke can occur if the low blood pressure is very heavy and chronic. This happens if one gets a lot of blood loss due to surgery, heart attack or abnormal heart rhythms.
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