This type of stroke occurs when the blood vessel clogs within because of a clot obstruction. Ischemic stroke accounts for about 87 percent of all cases. The underlying condition for this type of obstruction is the development of fatty deposits lining the vessel walls, known as atherosclerosis. These deposits cause two types of obstruction, cerebral thrombosis and cerebral embolism.
Urgent treatment for ischemic stroke - A clot busting drug, tissue plasminogen activator or tPA, is the only U.S. Food and Drug Administration approved drug for use in certain patients having a heart attack or stroke. Studies show that tPA can reduce the amount of damage if given within a few hours after symptoms.
Hemorrhagic stroke accounts for approximately 13 percent of stroke causes. It results from a weakened vessel that rupture and bleeds into the surrounding brain. The blood accumulates and compresses the surrounding brain tissue. The two types of hemorrhagic strokes are intraoarenchymal and subarachnoid hemorrhage.
Two types of abnormal blood vessels usually cause hemorrhagic stroke: aneurysms and arteriovenous malformations (AVMs).
1. An aneurysm is a ballooning of a weakened region of a blood vessel. If left untreated, the aneurysm continues to weaken until it ruptures and bleeds into the brain.
2. An arteriovenous malformation is a cluster of abnormally formed blood vessels. Any one of these vessels can rupture, also causing bleeding into the brain.
Before surgical treatment After surgical treatment
On some patients we can offer Pipeline Embolization Device. This procedure allows our neurointerventionalist to provide additional support to the aneurysm. By providing additional support to the weakened area this creates a lower risk for patients of future aneurysms.
Example of the Pimpeline Embolization Device
TIA (Transient Ischemic Attack)
Commonly referred to as a mini stroke, a TIA is a warning to be taken very seriously. A TIA is caused by a clot. The only difference between a stroke and TIA is that with TIA the blockage is temporary. TIA symptoms occur rapidly and last a relatively short time. Most TIAs last less than five minutes; the average is about a minute. Unlike a stroke, when a TIA is over, there's no permanent injury to the brain.
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To learn more about stroke visit, www.stroke.org.