Division of Neurosurgery   
Phone: 217-545-8000
FAX: 217-545-0253 
Email: neurosurgery@siumed.edu 
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Stroke

Stroke: is an abrupt interruption of constant blood flow to the brain that causes loss of neurological function. The interruption of blood flow can be caused by a blockage, leading to the more common ischemic stroke, or by bleeding in the brain, leading to the more deadly hemorrhagic stroke. Ischemic stroke constitutes an estimated 87 percent of all stroke cases. Stroke often occurs with little or no warning, and the results can be devastating.  

It is crucial that proper blood flow and oxygen be restored to the brain as soon as possible. Without oxygen and important nutrients, the affected brain cells are either damaged or die within a few minutes. Once brain cells die, they generally do not regenerate, and devastating damage may occur, sometimes resulting in physical, cognitive, and mental disabilities.

There are two types of stroke

Ischemic Stroke

Hemorrhagic Stroke

Transient ischemic attack (TIA):

This is a warning sign of a possible future stroke, and is treated as a neurological emergency. Common temporary symptoms include difficulty speaking or understanding others, loss or blurring of vision in one eye, and loss of strength or numbness in an arm or leg. Usually these symptoms resolve in less than 10 to 20 minutes, and almost always within one hour. Even if all the symptoms resolve, it is very important that anyone experiencing these symptoms call 911 and immediately be evaluated by a qualified physician.