What Causes A Stroke

A stroke is a sudden condition which occurs when a blood clot or ruptured artery or blood vessel restricts blood flow to a region of the brain. A reduction in oxygen and glucose (sugar) going to the brain will cause the death of brain cells and brain deterioration, which typically causes a defect in speech, movement, and memory, which are usually permanent.

The two major kinds of stroke are ischemic stroke and hemorrhagic stroke. Ischemic stroke is far more common and is responsible for approximately 75% of all cases of strokes and will manifest when a blood clot, or thrombus, develops that obstructs blood flow to a portion of the brain. If a blood clot forms in another area of the body and separates and begins moving errantly throughout the body, it is deemed an embolus. This mobile clot may be taken through the bloodstream to the brain where it can induce an ischemic stroke. A hemorrhagic stroke will materialize when a blood vessel on the brain’s surface bursts and fills the space found directly between the brain and skull with blood this is also known as a subarachnoid hemorrhage. It may also occur when a deficient artery within the brain ruptures and fills the encompassing tissue with blood this is also known as a cerebral hemorrhage. Both types of conditions will bring about a decrease in blood flow to the brain and an accumulation of blood in specific regions of the brain that adversely increases pressure within the brain.

Ischemic strokes are definitively the result of a thrombus or embolus that hinders blood supply to the brain. Blood clots or thrombus clots typically appear in regions of the arteries that have been impaired by atherosclerosis from an accumulation of plaques. Embolus are normally induced by atrial fibrillation which is an irregularity in the pattern of the heart beat that will progress into the formation of a blood clot and inadequate circulation.

Hemorrhage strokes can be influenced by rampant high blood pressure, an injury to the head, or aneurysms.

Elevated blood pressure level is the most prevalent cause of cerebral hemorrhage. It will cause small arteries within the brain to rupture. This decreases blood flow to the brain cells and inevitably increases pressure within the brain.

It will not only cause the pressure in the brain to rise unfavourably, but will also destroy some brain cells as the blood in the brain begins to breakdown. The increase in pressure can be detrimental to the brain’s functioning as it will destroy brain cells with the progressive rise in pressure. Any damage that occurs during this period as mentioned before will likely be irreversible.

An aneurysm which is an irregular blood-filled pouch that expands from deterioration in the wall of an artery is generally the likely causative agent of a subarachnoid hemorrhage. If an aneurysm bursts, blood will flow into the area between the surface of the brain and skull. This may also result in spasms within the blood vessels of the brain. Aneurysms are normally induced and exacerbated by high blood pressure.

Hemorrhagic strokes have a tendency to be much more serious than ischemic strokes. Death will often manifest in 30-50% of people who experience this type of stroke.

If you have symptoms such as a sudden acute headache accompanied by slurred speech, vision impairment, coordination problems, weakness in the muscles within the face, arms and legs, seek emergency treatment instantly to decrease the risk of serious complications or death from a possible stroke.