Electrocardiography passes on information regarding the electrical function of the heart, by changing the state of its constituent waves, namely the P, QRS, and T-waves which represent one cardiac cycle. The amplitude and interval of P-QRS-T segment determine the function of heart. Cardiac arrhythmia demonstrates a state of abnormal electrical activity in the heart which is a risk for humans. Currently onsets of cerebrovascular disease of ischemic nature have electrocardiographic changes, in those patients who had no primary heart disease. We estimated the prevalence of electrocardiographic changes for being of noteworthy one. The aim of this study presents analyses cardiac disease in electrocardiogram (ECG) signals for cardiac arrhythmia which leads to ischemic heart - stroke utilizing investigation of resulting ECG normal and abnormal wave forms. In results 75 of Patient group about (58.67%) were males and (41.33%) were females, their mean of age (62 years). The control group of patients was consisting of (52%) males and (48%) females mean age was (61.5 years). Frequency of electrocardiographic changes of the study sample was (58.67%), while with the control group of the patient was (25.33%).