When the blood supply to the brain is interrupted or blocked for any reason, the consequences are usually dramatic. Control over movement, perception, speech, or other mental or bodily functions is impaired, and consciousness itself may be lost. Disruptions of blood circulation to the brain may result in a stroke -- a disorder that occurs in two basic forms, both potentially life-threatening.
Clots near the brain. About three-quarters of all strokes are due to blockage of the oxygen-rich...
For people who have partial obstruction of a carotid artery -- the artery in the neck that provides blood supply to the brain -- a surgery called a carotid endarterectomy may be an option to prevent a stroke or TIA. This procedure involves the removal of fat and plaque buildup from these arteries.
If diagnosed early, because of warning signs of a problem, a carotid aneurysm can be repaired, preventing a possible stroke.