The QRS complex resembles a left bundle branch block morphology with a broad R wave in leads I and V6. However, there is a prominent R wave in lead V1 (↓), which represents an initial septal ...

An RSR' morphology occurs in lead V1 (←) and a broad terminal S wave in leads I and V5-V6 ... not completely typical because there is a prominent R' in leads V2-V3. In addition, the QRS complex ...