Comparative study of coronary artery lesions in myocardial infarction patients with or without acute ST segment elevation

Objective To investigate the differences of coronary artery lesion between myocardial infarction patients with or without ST segment elevation. Methods This study included 126 confirmed myocardial infarction patients with acute ST segment elevation (STEMI) and 96 confirmed myocardial infarction patients with acute non-ST segment elevation (NSTEMI). All patients received coronary angiography and the results were compared between two groups. Results More myocardial patients were with single vessel disease in STEMI group as compared with NSTEMI group (44% vs 14%, P001), while STEMI groups had more patients with tri-vessel disease (54% vs 20%, P001). Moreover, the incidence of impaired ventricular wall motion was common in STEMI groups than in NSTEMI group (64% vs 22%,P001). Conclusion The coronary lesions had different characteristic in myocardial patients with or without ST segment elevation.