الفهرس 
INTRODUCTION&Aim of the workOnly 14 pages are availabe for public view
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Abstract
Thrombolytic therapy has been a major advance in the management of AMI through early restoration of complete infarct artery perfusion after the occurrence of an acute coronary occlusion (White etal.,1998) . The major determinant of the risk in the AMI are advanced age, ventricular dysfunction, residual myocardial ischaemia and the occurrence of malignant ventricular arrhythmias (Timmis 2000) . Late potentials refer to low amplitude high frequency signals in the terminal portion of the QRS complex. Late potentials are actually continuous with QRS complex for a variable period of time on the S-T segment. They correspond to fragmented activation of ventricular tissue and are thought to originate from areas of slow, non-homogenous conduction within diseased myocardial tissue (El-Sherif etal.,1977). Late potentials on the signal averaged ECGs are risk markers for arrhythmias, sudden death in the period of 2-24 months after AMI (McGuire etal.,1988). The aim of the present study is to evaluate the effects of thrombolytic treatment on the incidence of late potentials on admission and on predischarge after AMI in a series of consecutive patients from our locality. Also we tried to disclose different parameters affecting the presence of late potentials in such patients. Lastly, the present study was expanded to include the most predictors for development of late