EKG changes in myocardial infarction

From IDWiki

Location

Leads involved Distribution Artery involved
II, III, aVF Inferior RCA
V3, V4 Anteroapical Distal LAD
V1, V2 Anteroseptal LAD
I, aVL, V5, V6 Anterolateral Circumflex
I, aVL, V2-V6 Anterior Proximal LCA
Tall R-wave in V1 Posterior RCA

12-Lead

ECG
I aVR V1 V4
Lateral (Cx) Septal (LAD) Anterior (LAD)
II aVL V2 V5
Inferior (RCA) Lateral (Cx) Septal (LAD) Lateral (Cx)
III aVF V3 V6
Inferior (RCA) Inferior (RCA) Anterior (LAD) Lateral (Cx)

Progression

  • ** Hyperacute T-waves (minutes)
  • ST elevation (minutes)
  • Biphasic T-waves (hours)
  • T-wave inversion (hours to months)
  • Q-waves (days)