الفهرس 
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Abstract
Acute myocardial infarction (AMI) is a common clinical syndrome with high morbidity and mortality throughout the world. ST-segment elevation myocardial infarction (STEMI) is characterized by persistent ST elevation in electrocardiogram (ECG) or characteristic symptoms of myocardial ischaemia accompanied by newly developed left branch block and increased biomarkers associated with myocardial necrosis. Early diagnosis and rapid reperfusion are essential in STEMI treatment. Delay in reperfusion has been found to be associated with increased mortality and morbidity, so different reperfusion strategies were used to decrease the time to restore patency and blood flow in the coronary arteries. A common complication of acute myocardial infarction (AMI) is heart failure (HF). HF is the most powerful predictor of death among AMI patients. So an important echocardiographic measurement for post-AMI patients is the assessment of left ventricular systolic function via left ventricular ejection fraction (LVEF) which is well associated with short-term and long-term outcomes. As such, Tei index, which considers both contraction and relaxation timing intervals, may provide important prognostic information in patients presenting with AMI which may go unmissed with the isolated evaluation of LVEF. We aimed at this work to correlate MPI assessed by different echocardiographic methods in patient with AMI receiving different reperfusion treatment. The study was carried out on 100 subjects of both sexes, who were presented to the Mansoura University Hospitals. Subjects were categorized into three groups according to the reperfusion strategy: