Value of leads V7-V9 in diagnosing posterior wall acute myocardial infarction and other causes of tall R waves in V1-V2

Am J Cardiol. 1997 Aug 15;80(4):508-9. doi: 10.1016/s0002-9149(97)00404-9.


Left posterolateral chest leads (V7, V8, V9) helped distinguish the multiple causes of tall R waves in V1 and/or V2, diagnosed true posterior myocardial infarction when standard leads did not, and identified the presence or absence of posterior injury in patients with inferior infarction.

MeSH terms

  • Diagnosis, Differential
  • Electrocardiography*
  • Humans
  • Myocardial Infarction / diagnosis*
  • Myocardial Infarction / physiopathology