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Among the neurologic diseases,C.V.A(Cerebro Vascular Accident) is    the  most  prevalent  cause of fatality, that makes also a great number of    patients disable to do their daily activities.So we can reduce the mortality    rate by knowing the risk factors.In this study we tried to find frequency rate    of Ischemic C.V.A and its risk factors.          In this study  we used  386 patients folders, the diagnosis was generally    based on clinical  symptoms  and  CT- scans in 1994-1995. The  studied risk    factors  were: blood pressure,diabet , age , sex ,  hyperlipidemia, smoking    and heart diseases.          Analysis of the data showed that the most prevalent kind of C.V.A was    Ischemic and the greatest risk factor was blood pressure.          As the known risk factors of Ischemic  C.V.A  are  the  same  kind  that    can be investigated and  treated  simply, so it is probable that we will be    able to avoid  occuring it, by controlling these factors.