Stroke, a medical condition is characterized by rapid loss of brain function due to a disturbance in the blood supply to the brain. Stroke is sometimes called a “brain attack.” If blood flow is stopped for longer than a few seconds, the brain cannot get the required oxygen and nutrients through blood and eventually brain cells can die, causing permanent damage.
Sometimes referred to as cerebrovascular accident (CVA), stroke cause rapid loss of brain function due to a disturbance in the blood supply to the brain. This can be due to ischemia (lack of blood flow) caused by blockage (thrombosis, arterial embolism), or a hemorrhage (internal bleeding or loss of blood that occurs from the vascular system into a body cavity). As a result, the affected area of the brain cannot function, which might result in an inability to move one or more limbs on one side of the body, inability to understand or formulate speech, or an inability to see one side of the visual field. A stroke is a medical emergency and if untreated, it can cause permanent neurological damage and death.
Genes that have a vital role in regulating the blood & oxygen supply to the brain through formation & disruption of an atherosclerotic plaque are analyzed for variations which when present, imply that a person has increased risk for stroke.