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Strokes: The Ischemic Stroke

Ischemic strokes are the most common, making up about 83 percent of all strokes. An ischemic stroke occurs when a blood vessel becomes blocked, usually by a blood clot. Clots can form when blood vessels become clogged with fat and cholesterol, a condition known as atherosclerosis. In an ischemic stroke, blood can't reach the brain, and brain cells suffer from the lack of nutrients and oxygen that they would normally get.

There are actually two different types of ischemic stroke, depending on where the clots form. Clots that form inside a blocked blood vessel in the brain cause a thrombotic stroke. Embolic strokes result from clots that form elsewhere in the body and travel toward the brain until they become lodged in a narrow artery, causing a blockageIschemic stroke may also be caused by a deformity in the valves of the heart or as a result of a condition called endocarditis, in which the lining inside the heart becomes inflamed. Clots can form on these abnormal surfaces and later travel to and lodge in a small artery in the brain. simple and casual wedding collections in short length

Strokes: The Hemorrhagic Stroke

A hemorrhagic stroke occurs when a blood vessel in the brain bursts or breaks, causing bleeding in the brain.

Hemorrhagic stroke can most often be traced to high blood pressure, but it may also be caused by an aneurysm. This is when a weakened portion of a blood vessel balloons out, ruptures, and causes bleeding in the brain.

Another possible cause is an arteriovenous malformation, or AVM, a group of malformed blood vessels that can rupture, again resulting in bleeding in the brain.

The buildup of the protein amyloid inside the arteries is also a common cause of hemorrhagic stroke, especially in older individuals.

Strokes: A Word About TIAs

A transient ischemic attack (TIA) is a so-called pre-stroke, or a warning sign of an impending serious stroke that could cause damage. A TIA is minor, generally does no damage, and is usually caused by a blood clot. A TIA does produce temporary stroke symptoms that then subside. But a TIA means you should get checked out immediately by your doctor or in a hospital emergency department, and start making changes to prevent a more serious stroke.