Abstract | BACKGROUND: OBJECTIVE: The purpose of this study was to define the electrocardiographic (ECG) characteristics and procedural techniques to successfully identify and ablate MB PVCs/VT. METHODS: In 10 patients with left bundle branch block morphology PVCs/VT, electroanatomic mapping in conjunction with intracardiac echocardiography ( ICE) localized the site of origin of the PVCs to the MB. Clinical characteristics of the patients, ECG features, and procedural data were collected and analyzed. RESULTS: Seven patients presented with IVF and 3 presented with monomorphic VT. In all patients, the ventricular arrhythmias (VAs) had a left bundle branch block QRS with a late precordial transition (>V4), a rapid downstroke of the QRS in the precordial leads, and a left superior frontal plane axis. Mean QRS duration was 152.7 ± 15.2 ms. Six patients required a repeat procedure. After mean follow-up of 21.5 ± 11.6 months, all patients were free of sustained VAs, with only 1 patient requiring antiarrhythmic drug therapy and 1 patient having isolated PVCs no longer inducing VF. There were no procedural complications. CONCLUSION:
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Authors | Mouhannad M Sadek, Daniel Benhayon, Ravi Sureddi, William Chik, Pasquale Santangeli, Gregory E Supple, Mathew D Hutchinson, Rupa Bala, Lidia Carballeira, Erica S Zado, Vickas V Patel, David J Callans, Francis E Marchlinski, Fermin C Garcia |
Journal | Heart rhythm
(Heart Rhythm)
Vol. 12
Issue 1
Pg. 67-75
(Jan 2015)
ISSN: 1556-3871 [Electronic] United States |
PMID | 25240695
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright © 2015 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved. |
Topics |
- Adult
- Catheter Ablation
- Cohort Studies
- Electrocardiography
- Female
- Humans
- Male
- Middle Aged
- Tachycardia, Ventricular
(diagnosis, physiopathology, surgery)
- Treatment Outcome
- Ventricular Fibrillation
(diagnosis, physiopathology, surgery)
- Ventricular Premature Complexes
(diagnosis, physiopathology, surgery)
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