Brain ischemia
Brain Ischemia
Brain ischemia (pronunciation: /braɪn ɪˈskiːmiə/), also known as cerebral ischemia or cerebrovascular ischemia, is a condition that occurs when there is insufficient blood flow to the brain to meet metabolic demand. This leads to poor oxygen supply or cerebral hypoxia and results in the death of brain tissue, or cerebral infarction / ischemic stroke. It is a sub-type of stroke along with hemorrhagic stroke.
Etymology
The term "ischemia" is derived from the Greek ischaimos meaning "stopping blood". The term "cerebral" or "brain" refers to the brain, and "vascular" refers to the blood vessels.
Causes
Brain ischemia is caused by a variety of conditions, most commonly by thrombosis or embolism, both of which involve blockages within the blood vessels. Other causes can include systemic hypoperfusion (a reduction in blood supply), vasospasm (a sudden constriction of a blood vessel), or atherosclerosis (a disease of the arteries).
Symptoms
Symptoms of brain ischemia can include sudden numbness or weakness of the face, arm, or leg, especially on one side of the body, confusion, trouble speaking or understanding speech, difficulty seeing in one or both eyes, and severe headache with no known cause.
Treatment
Treatment for brain ischemia is typically aimed at restoring blood flow to the brain. This can be achieved through the use of thrombolytic therapy, which involves the use of drugs to dissolve the clot and restore blood flow. Other treatments can include anticoagulant therapy, antiplatelet therapy, and in some cases, surgical intervention.
See Also
External links
- Medical encyclopedia article on Brain ischemia
- Wikipedia's article - Brain ischemia
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