Field-friendly rule of thumb for LBBB/paced rhythm: count number large blocks S-wave depth (and round up). That's max number mm ST-elevation we should allow in that lead, measured at J-point. So for aVF it's 4 mm, for V3 it's 5 mm. Lots of excessive discordance on this ECG! OMI.
A 65-year-old woman presents to the ED with chest pain and diaphoresis concerning for an acute coronary syndrome. The following ECG is obtained. What is the significance of the ST segment abnormalities seen?
ed.gr/dren5