STEMI in Right Bundle Branch Block

Vignette:  A 60 yo with h/o of DM and HTN is c/o chest pain. 

The 12L shows sinus rhythm at about 80 bpm with right bundle branch  block (RBBB) pattern. There are ST elevations in all precordial leads (V1-V6), I and aVL. There are ST depressions in III and aVF. This is anterior wall STEMI. Angiography showed lesion in the proximal LAD and intervention was done.