Acute Myocardial Infarction

ST segment Elevation: ST segment deviation

is measured 0.04 seconds after the J-point from the baseline.

 

Classic sequence of events:
 
Hyperacute T waves (not always seen)
  
 
ST segment Elevation
 
 
Qwaves
  
 
Twave Inversion
  

Anatomy and Considerations

Location (links) Leads Complications Vessels
Anterior V3-V4 LV dysfunction, CHF, heart block LCA
Septal V1-V2 Bundle Branch Blocks and other heart blocks LAD- septal branch
Inferior II, III, AVF Hypotension, possible severe and adverse reactions to nitrates and morphine RCA
Lateral V5-V6 AV nodal block, LV dysfunction LCA- circumflex
Posterior II, III, AVF, rV4 or marked depression V1-V4 AV nodal block, Atrial fibrillation and flutter, Hypotension, possible severe and adverse reactions to nitrates and morphine RCA (RV infarct)

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