Answer
The Cerebrovascular accident or CVA is commonly called a stroke or a brain attack. It is a situation in which the circulation of the blood is impaired. The ischemia that results in the relevant area of the brain deprives the tissue of oxygen( hypoxia) an nutrients. The result is neurons die and the functions that they support are either lost or disabled.
Cerebrovascular accidents may complete with gross resultant gross deficits such as permanent or long term paralysis on one side, loss of speech or inability to understand speech. Blockage of brain cicuatin may involve only very small blood vessels , small areas and short periods of 5-50 minutes. These incomplete strokes are called transient ischemic attacks or TIAs
Work Step by Step
Cerebrovascular attacks whether CVAs or TIAs are caused by impairment of blood supply to large or smaller areas of the brain . The ischemia results in hypoxia, loss of nourishment to the tissue and death of neurons. The result is impairment of neural function dependent of the size of the brain area affected and the length of time of the circulatory blockage. Symptoms may include hemiplegia, loss of speech, minor TIA symptoms of numbness and temporary disorientation.
