Brain has 100 billion neurons and trillions of synapses,Although brain weight does not exceed 2% of body weight, but it consumes 70% of body's oxygen and other nutrients.Brain could not store these nutrients as muscles do, it needs to be a constant flow of blood to function normally. Stroke happens when the amount of deficiency undergone this blood and deprive brain tissues need it. After four minutes of interruption the essential nutrients, brain cells begin to die.
There are two types of stroke:
Ischemic stroke:
Produces 80% of the cases of stroke for Atherosclerosis is a fatty build-up deposits containing cholesterol-called "plaque".
Leads to plaque growth inside wall rough artery. This may cause irregular surface disruption in blood flow around sediment - just a rock in river flow - a thrombus component.
Usually on a temporary basis, Statistics indicate symptoms that are caused by interruptions in blood flow to transient ischemic attack. During this attack, body can call enzymes dissolve thrombus and restore blood quickly to its normal flow.
Hemorrhagic stroke:
Exposed to one of these stroke when an artery in brain bursting and leaking blood. Bleeding from artery to surrounding tissue, leading to damage. While cut off the blood cells that behind leak or rupture of damage in turn.
Hemangioma of reasons responsible for a hemorrhagic stroke. With advancing age, this develops swelling in weak point within blood vessel wall. It is worth mentioning that some of a genetic alert caused vascular tumors. However, most common cause of hemorrhagic stroke is high blood pressure.
In fact, hemorrhagic stroke is less common than ischemic stroke, but mortality rate high. Statistics indicate that 50% of patients with hemorrhagic strokes die while this drop to 20% in cases of ischemic stroke. As for cases of stroke among young adults are generally hemorrhagic.
In general we can go away from stroke by help our body to avoid following dangerous elements:
Hypertension (high blood pressure);
Smoking;
Cardiovascular morbidity;
High blood cholesterol levels.
