12 Channel > LAD Proximal > Unstable AP  
   

 

Sinus rhythm, 88 beats/min, excessive left type with left anterior hemiblock, complete right bundle-branch block, i.e. bifascicular anterior-type block, descending ST-segment courses in V1-V6, also indicated in leads I and aVL.

Ischemia is shown by the presence of horizontal (in the case of ascending ST-segment courses detectable 80 msec past the J point) or Q in leads II, III, aVF, and V4-V6 descending ST-segment depression of at least 1 mm (0.1 mV).