Overview of a Stroke Essay

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People often know of strokes or someone affected by a stroke, but not always what constitutes a stroke. A stroke occurs when blood flow to the brain is interrupted or reduced due to a blockage or rupture of a blood vessel or artery that supplies blood to the brain. The interruption of blood flow deprives the brain of necessary nutrients and oxygen supplies, killing surrounding cells in the brain. There are three main types of strokes: ischemic stroke, hemorrhagic stroke, and transient ischemic stroke. Ischemic strokes occur due to an obstruction or clotting of a blood vessel or artery. There are two types of ischemic strokes: embolic and thrombotic strokes. An embolic stroke is when a blood clot or other substance forms in the …show more content…
Lifestyle decisions may also play a part in increasing risk of stroke, such as smoking, lack of exercise, high blood pressure, poor diet, being over weight, and diabetes. There are many methods used to diagnose strokes. Often doctors will begin with a physical and neurological examination. During the examination, the doctor will ask for patient and family history, listen for atherosclerosis, check blood pressure, look for cholesterol crystals or clots at the back of the eyes, test speech, cognition, muscle strength, nerve sensation, body reflex and coordination, and possibly order blood tests to measure glucose and platelet levels. Medical instruments used to detect stroke include: brain computed tomography (Brain CT), magnetic resonance imaging (MRI), computed tomography arteriogram (CTA), magnetic resonance arteriogram (MRA), carotid ultrasound, carotid angiography, Doppler ultrasound, electrocardiogram (EKG), and echocardiography (Echo). A Brain CT takes x-rays that can display brain bleeds, dead brain cells, and/or possible brain conditions. MRIs use magnets and radio waves to create a picture of cell damage and tissue change in the brain and body. CTA and MRA provide information on blood flow to the brain by showing the large blood vessels. Carotid ultrasound uses sound waves, while

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