This may result from narrowing ( stenosis) of the arteries, which creates areas of turbulence that can lead to blood clot ( thrombus) formation. Ischemic stroke occurs when the arteries feeding the brain become blocked. Ischemia is the medical term for a reduction of blood and oxygen to the cells. In fact, people who have suffered TIAs are even more likely to die of heart attack than of stroke.Ī TIA is caused by the same factors that cause ischemic stroke. TIAs and strokes generally occur in people with atherosclerosis (hardening of the arteries) or coronary artery disease. Within the first month, the average risk of stroke after a TIA ranges from 1 in 20 to 1 in 10. The risk of stroke is highest within the first 3 months following a TIA, especially within the first few days. Therefore, recognition of TIA symptoms is important because preventative treatment may help to reduce the chance of an impending stroke. A TIA precedes approximately 15% to 30% of strokes. ![]() ![]() TIAs are more common among older people, and often go undiagnosed if the symptoms are not recognized. The longer the symptoms last, the more likely that there will be permanent brain tissue injury. In other words, it's a mini-stroke that you recover from quickly. A transient ischemic attack (TIA) is an ischemic stroke in which the blood flow is restored quickly and the symptoms typically disappear within 1 to 2 hours.
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