Rad Care Essay

1758 WordsSep 11, 20148 Pages
Cerebrovascular Accident By Mike Smith RADT153 Radiography Patient Care Cypress College Just what is a cerebrovascular accident (CVA) one might say? A cerebrovascular accident otherwise known as a stroke occurs when the blood supply leading to the brain is interrupted or reduced; causing the tissue in the surrounding area to become oxygen deprived, which can lead to brain damage. This can be caused either by a type of blockage, known as ischemic stroke or by a rupture in a blood vessel, a hemorrhagic stroke. There is also a condition called a transient ischemic attack, where the individual for a brief period of time shows symptoms that are similar to a stroke. About 85 percent of strokes are ischemic strokes (Stroke, 2014). There are two main things that can cause an ischemic stroke, the first being a reduction in blood flow in a vessel leading to the brain. A thrombosis is a clot that forms in an artery, usually due atherosclerosis, which is a disease that causes plaque to build up on the inside of the artery. This plaque over time can reduce the blood flow reaching the brain or just outright block the blood vessel completely causing a CVA. The second cause of ischemic stroke is due to a traveling blood clot called an embolism. These clots usually form in the heart, break loose into the bloodstream and “travel through the brain's blood vessels until it reaches vessels too small to let it pass” (Ischemic Strokes, 2013). Even though hemorrhagic stroke only occurs about 15% of the time, it “is associated with higher mortality rates than is ischemic stroke” (Liebeskind, 2013). Hemorrhagic stroke occurs when a blood vessel located in the brain starts to either leak or rupture. This is usually caused by high blood pressure and weakened walls of the vessel caused by an aneurysm. There are two types of hemorrhagic stroke, intracerebral and

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