Electrocardiographic criteria for predicting the culprit artery in inferior wall acute myocardial infarction

Am J Cardiol. 1999 Jul 1;84(1):87-9, A8. doi: 10.1016/s0002-9149(99)00197-6.


Two patterns of the QRS complex in the lateral lead aVL on the admission electrocardiograms of patients with inferior wall acute myocardial infarction (AMI) were correlated with the culprit artery. S/R wave ratio < or =1/3 with ST depression < or =1 mm was found to be a sensitive and specific marker for left circumflex artery AMI, whereas S/R-wave ratio >1/3 with ST-segment depression >1 mm was suggestive of right coronary artery AMI.

MeSH terms

  • Cineangiography
  • Coronary Disease / diagnosis*
  • Electrocardiography* / statistics & numerical data
  • Female
  • Humans
  • Male
  • Middle Aged
  • Myocardial Infarction / diagnosis*
  • Predictive Value of Tests
  • Sensitivity and Specificity