Wide QRS complex tachycardia and alternating bundle branch block aberration: What is the mechanism?

Hidehiro IwakawaKen TerataHaruwo TashiroYoshihisa AbeHiroyuki Watanabe

Published in: Journal of arrhythmia (2022)

A 70-year-old man was referred for evaluation and treatment of wide QRS complex tachycardia with left bundle branch block morphology. Electrocardiography showed atrial bigeminy with an alternating bundle branch block (ABBB) aberration. Atrial burst stimulation reproducibly demonstrated ABBB. What is the mechanism?

Keyphrases

catheter ablation
atrial fibrillation
left atrial
cardiac resynchronization therapy