Study of the severity of coronary artery in acute myocardial infarction

Objective:To investigate the severity of infarct related coronary artery (IRA) stenosis in patients with acute myocardial infarction (AMI).Method: The study consisted of 35 patients with AMI. Double-vessels disease were identified by angiography. It was classified by severity of coronary stenosis of ≤50%、50%～75%、75%～99% and 100%. Goffredo' scoring system of the severity of coronary stenosis was used. Result: The narrowing coronary of ≤50% (11, 30.6 %) and 50%～75%(10, 27.8 %) in IRA group were more than that in non IRA group〔3,7% and 4, 9.3 %(P 0.01 )〕;The narrowing coronary 75%～99% (31, 72.1 %)and in 100%(5, 11.6 %) in non IRA group were more than those in IRA〔12, 33.3 % and 3, 8.3 %,(P 0.01 )〕; According the scores, the severity of coronary in non IRA group were higher than that in IRA group ( 13.23 ± 9.40 vs 8.08 ± 8.10 ,P 0.05 ).Conclusion: The severity of coronary artery can't predetermine the development of acute myocardial infarction.