Low blood pressure may also cause an
ischemic stroke, although this is less common. Low blood pressure results in reduced
blood flow to the brain. It may be caused by narrowed or diseased
arteries, a heart attack, a large loss of blood, or a severe infection.
Thrombolysis, also known as thrombolytic therapy, is a treatment to dissolve dangerous clots in blood vessels, improve blood flow, and prevent damage to tissues and organs. Thrombolysis may involve the injection of clot-busting drugs through an intravenous (IV) line or through a long catheter that delivers drugs directly to the site of the blockage. It also may involve the use of a long catheter with a mechanical device attached to the tip that either removes the clot or physically breaks it up.
Some surgeries (such as endarterectomy) or other procedures (such as
carotid artery stenting) that are used to treat narrowed carotid arteries may cause a blood
clot to break loose, resulting in a stroke.
Causes of hemorrhagic stroke
hemorrhagic stroke is caused by bleeding in or around the
Bleeding inside the brain itself (intracerebral hemorrhage, or ICH) may be a
result of long-term high blood pressure.
Bleeding in the space around the
brain (subarachnoid hemorrhage, or SAH) may be caused by a ruptured
aneurysm or uncontrolled high blood pressure.
Other less common causes include head or neck injuries, certain diseases, and radiation treatment for cancer in the neck or brain.
WebMD Medical Reference from Healthwise
February 05, 2013
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