Thesis (M.Sc.) - Cairo University - Faculty Of Medicine - Department Of Neuropsychiatry

Stroke is the third leading cause of death following heart diseases and cancer , Approximately 20 - 25 of these people will die within 1 year of their stroke , also it is the most common cause of adult disabilityDespite advances in acute and prophylactic therapies , rates of stroke and stroke - related deaths continue to increase Stroke occurs when the blood supply to a part of the brain is suddenly interrupted or when a blood vessel in the brain bursts , spilling blood into the spaces surrounding brain cellsAn exceptional character of the brain is that more any other organ the brain depends from minute to minute to an adequate supply of oxygenated bloodConstancy of cerebral circulation is assured by series of barorecptors and vasomotor reflexes and the centers in the lower brain stemBrain tissue deprived of blood undergoes ischaemic necrosis or infarction , also referred to as a zone of softening or encephalomalacia

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