Stroke is caused mostly due to complete loss of blood circulation to the brain. A stroke of any kind results in a total or partial loss of the neurological functions. It is also called a cerebrovascular accident or CVA. The term stroke is very nonspecific and it can be of any type like thrombosis, embolism, ischemic or hemorrhagic.
Strokes of ischemic type refer to a condition caused by a thrombosis or an embolism and it accounts for 85 percent of all the strokes.
The definition of an ischemic stroke is a sudden loss of blood circulation to the brain. The brain cannot store blood or oxygen and it needs a constant supply of it to function normally. The brain needs the arteries that carry blood and oxygen. When the arteries are blocked the brain cells do not function and die quickly. That is why an ischemic stroke leads to several complications like physical impairment for example.
An ischemic stroke can be caused due to diseases and conditions. Cholesterol, high blood pressure and habits like smoking can cause ischemic strokes. Ischemic strokes are of two types, embolic and thrombosis. An embolic stroke is caused when a block travels up to a blood vessel in the brain or the neck and causes a stroke. Thrombosis occurs when a block is formed within the brain. Another variation is when blocks in the heart are found and this is called atrial fibrillation.
All strokes are treated as emergencies and the immediate attending physician can handle it best in order to avoid complications.
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