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Stroke - Essay Example

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The physiological changes that take place following stroke and how it affects recovery Course Date Stroke, also sometimes called a brain attack or a cerebrovascular accident (CVA), occurs when blood flow is interrupted to part of the brain (Adams, 2007)…
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Stroke
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Stroke

There are two types of stroke ischemic and hemorrhagic, which can affect recovery as severity of stroke can greatly influence the recovery. As ischemic stroke have much better chance for recovery than hemorrhagic stroke (Aguilar, 2009). Stroke is fatal for about a quarter of the white male population, half of the black males population, quarter of the white female population and a roughly two fifths of the black female population. Survivors of strokes are usually left with significant impairments to their abilities, which require emergency treatment and comprehensive rehabilitation. This is in order to improve significantly both survival and recovery, as the effects are usually severe except in mild cases of stroke. Studies conducted in 2003 showed strong indications that treating stroke victims with certain antidepressant medications, despite their lack of depression improved their chances of living longer. People who received antidepressant treatment had an increased chance of survival in relation to cardiovascular events than those who did not receive antidepressant drugs (U.S. Department of Health and Human Services, 2008). Post stroke changes in blood pressure are crucial, as there is an occurrence of impairment in cerebral auto regulation, which under conventional conditions, serves to uphold constant cerebral blood flow in spite of changes in systemic BP. Both the systolic and diastolic BP rates are elevated following a stroke attack, where it seems to rise sharply at the time of stroke, and the blood pressure then declines within a week (Dawson, 2000). On the other hand, body temperatures rise by about 0.2°C over the first 24-36 h after stroke, and then begin to fall. Following this elevation, temperatures then seem decline within the first five days following the stroke, despite the lack of extensive studies into the rate of normalization (Dippel, 2003). Consequently, glucose levels appear to increase post stroke, in which case, hyperglycemia appears to have an affiliation with more severe stroke. Hyperglycemia after stroke is a phenomenon occurring often; with almost half of the victims having blood, glucose levels beyond 7.0 mmol/L. Regions affected by stroke may be crucial especially in relation with infarctions of the insular cortex, which is involved in the autonomic control of the neuroendocrine stress response. The control is believed to be affiliated with hyperglycemia, but this connection has been disagreed upon (Morfis, 1997). Transient hypoxia has been encounters in common interactions such as MRI scanning, where hypoxia is often experienced after stroke, but the frequency depends on the definition used. In stroke cases, hypoxia is usually affiliated with co-morbidities such as infections of the respiratory tract and failure of the cardiac system, where vascular dementia is also a frequent post-stroke problem described by the loss of cognitive role or thinking capabilities (Wong, 2007). It occurs when brain tissue is damaged following lower levels of blood flow to the brain in the event of a stroke of following multiple strokes. As a result, the damaged brain tissue inhibits the abilities of the victim in relation to information processing, and the consequences are loss of memory, confusion, reduced concentration span and problems handling everyday tasks. A stroke may affect a person's ability ... Read More
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