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

ABSTRACT: 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?

SUBMITTER: Iwakawa H 

PROVIDER: S-EPMC9237293 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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

Iwakawa Hidehiro H   Terata Ken K   Tashiro Haruwo H   Abe Yoshihisa Y   Watanabe Hiroyuki H  

Journal of arrhythmia 20220331 3

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? ...[more]

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