In this ECG example of AIVR, note the right bundle branch block pattern and upward concordance, with all the QRS complexes up in the precordial leads V1 to V6 during the wide complex rhythm.

The ECG shows regular P waves at 60 beats per minute ... The findings are consistent with accelerated idioventricular rhythm (AIVR). An idioventricular rhythm is similar to ventricular tachycardia ...