Arrhythmias & electrophysiology
Electrocardiographic and electrophysiological characteristics of ventricular arrhythmias from the right bundle branch of the moderator band
Authors' conclusion
QRS morphology of MB-RBB VAs is characterized by a typical left bundle branch block pattern with a relatively narrow QRS complex, short r wave and rS durations, and a sharp S wave downstroke without notching in leads V1 and V2. Mapping and ablation of the leading RBB potential are effective in eliminating VAs.
Study context
- Population
- Patients with ventricular arrhythmias (VAs) from the right bundle branch (RBB) of the moderator band or right ventricular (RV) anterior papillary muscle
- Participants
- 16 vs 5
- Comparison
- MB-RBB VAs vs RV-APM VAs
- MB-RBB VAsn = 16
- RV-APM VAsn = 5reference
- Outcome
- ECG and electrophysiological characteristics of MB-RBB VAs
Methodological detailsintracardiac echocardiography-guided
- Intracardiac echocardiography-guided
Main finding
As reported in the abstract
- MB-RBB VAs: narrower QRS complex during VAs vs RV-APM VAs
- P < .001
Original publication
Electrocardiographic and electrophysiological characteristics of ventricular arrhythmias from the right bundle branch of the moderator band. Heart Rhythm. Published 10 January 2023. doi:10.
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