stroke which is mainly caused by the interruption of blood flow to a part of the brain due to the formation of a blood clot along the lumen of an artery. These thrombi usually disturb the blood supply through the arteries into the brain , causing damage. These are the common form of lacunar strokes. About half to two-thirds of all strokes are thrombotic strokes.
In such type of stroke, a blood clot (thrombus) forms inside one of the brain’s arteries. The clot blocks blood flow to a part of the brain. This causes brain cells in that area to stop functioning and die quickly.The blood clot that triggers a thrombotic stroke usually forms inside an artery that already has been narrowed by atherosclerosis. This is a condition in which fatty deposits (plaques) build up inside blood vessels.
Thrombotic strokes can affect both large as well as small arteries of the brain. when the clot affects the larger arteries of the brain and intrupt blood flow to the greater portion of it , results in greater disability and when a thrombotic stroke occurs in a small artery, the artery is usually one that is deep within the brain. This stroke is more specifically named a lacunar stroke. Lacunar strokes often have minimal symptoms because only a small part of the brain is affected.
Another type is embolic stroke which is also due to formation of blood clot somewhere in the body other than brain. in this the thrombi(blood clot) travels through the blood stream to the brain artery.. this blood clot usually comes from the heart
CAUSE OF THROMBOTIC STROKE
The cause of thrombotic stroke is migraine headache. In severe cases, a migraine headache can cause a brain artery to go into spasm for a long time. And allows to form blood clot
RISK FACTORS OF THROMBOTIC STROKE
Certain risk factors play an important role these are..
- Family history of stroke
- High blood pressure (hypertension)
- High cholesterol
Article publié pour la première fois le 29/09/2011