RESUMEN
This study was carried out at Nasser Institute Hospital during the period from October 1997 to August 1999. The aim of this work was to identify if there is a significant difference between ST segment elevation myocardial infarction [STEMI] and non-ST segment elevation myocardial infarction [NSTEMI] as regards risk factor distribution, cardiac enzymes elevation, echocardiographic examination and quantitative coronary angiographic parameters. Forty patients with acute myocardial infarction were studied, 20 were diagnosed as STEMI [group 1] and the other 20 patients were diagnosed as NSTEMI [group 2] on the basis of electrocardiographic analysis. Every patient was submitted to full medical history, thorough clinical examination and measurement of cardiac enzymes including CPK, LDH, CK-Mb fraction. Resting electrocardiography, echocardiography and coronary angiograms were performed. The results of this work showed that patients with NSTEMI had a statistically significant more prevalent history of myocardial ischemia or infarction [40% versus 5% in patients with STEMI]. Also, a statistically significant lower level of cardiac enzymes and a statistically significant less occurrence of regional wall motion abnormalities were detected. On the other hand, risk factors [age, sex, smoking, hypertension, diabetes mellitus and hyperlipidaemia], left ventricular function, fractional shortening and all QCA parameters showed no statistically significant difference between both groups