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.

This ECG has clear "AV dissociation" or "atrioventricular ... it is referred to as an accelerated idioventricular rhythm or AIVR. This is a hemodynamically stable rhythm that occurs commonly ...