Transient ischemic attack

A temporary inadequate blood supply to an area of the brain that causes transient neurological manifestations, often due to a “ministroke” caused by a small blood clot.


A temporary spasm of a cerebral artery that produces symptoms similar to those of a minor stroke is often a fore warning of a true cerebrovascular accident.


Temporary interference with blood supply to the brain by small clots, causing no permanent brain damage.


Usually very brief episode in which there is insufficient blood supply to the brain, usually caused by atherosclerotic plaque or embolus. Symptoms depend on the site affected and the size of the blockage and may include dizziness, disturbance of vision, and numbness.


A sudden neurologic disturbance due to a temporary lack of adequate blood supply caused by cerebral artery spasm. May cause brief periods of inability to move or speak. Recurrent attacks may be predictive of stroke.


Also known as a TIA or a mini stroke, a brain disorder caused by a temporary interruption of blood supply to the brain. A TIA is caused by reduced blood flow (ischemia). Ischemia may in turn be the result of atherosclerosis (narrowing of the arteries) or emboli (clots that travel and lodge in blood vessels). A TIA results in a temporary loss in brain functions that may last from several minutes to several hours. A TIA that lasts for more that 24 hours is a stroke.


A neurologic deficit, having a reversible vascular cause, that produces stroke symptoms that resolve within 24 hr. (In practice, most TIAs resolve within an hour of onset). Patients who have suffered a TIA have an increased risk of peripheral and coronary artery atherosclerosis, and an increased risk of subsequent heart attack and stroke.


Referred to as a mini-stroke, a transient ischemic attack (TIA) occurs when there is a momentary disruption of blood flow in a specific region of the brain. Unlike a full-fledged stroke, normal brain function is typically restored within 24 hours.


 


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