Published: May 13th, 2016

Category: STEMI

Pre-hospital ECG


Emergency Department ECG


Cardiac Cath Report

LM- Normal caliber, patent

LAD- Normal caliber, transapical, proximal vessel patent, mid 30% stenosis at origin of D2, 80% stenosis mid to distal, distal LAD mild disease

LCx- Normal caliber, proximal 40% stenosis at origin of OM 1, mid and distal mild disease. OM 1 small to medium, ostial 30% stenosis.

RCA- 100% proximal occlusion


Inferior MI

  • 40-50% of all myocardial infarctions.
  • more favorable prognosis than anterior myocardial infarction
  • Up to 40% of patients with an inferior STEMI will have a concomitant right ventricular infarction. These patients may develop severe hypotension in response to nitrates and generally have a worse prognosis.
    • Confirmed with Right sided ECG, Elevation in V4R
  • Up to 20% of patients with inferior STEMI will develop significant bradycardia due to second- or third-degree AV block. These patients have an increased in-hospital mortality (>20%).
  • ECG findings
    • ST elevation in leads II, III and aVF
    • Reciprocal ST depression in aVL (± lead I)
    • RCA (80%): Elevation in III > II, Reciprocal depression in I
    • LCx (20%): Elevation in III = II, No reciprocal depression in I