Ablation of Idiopathic Ventricular Tachycardia with a Left Bundle-Branch Block Morphology Originating from the Pulmonary Artery

Hiroshi Ogi, MD; Yukiko Nakano, MD; Noboru Oda, MD; Miwa Miyoshi, MD; Kazuaki Chayama, MD; Ken Ishibashi, MD; Yuko Hirai, MD; Tomokazu Okimoto, MD

doi:10.1016/S1880-4276(06)80017-7

Journal of Arrhythmia (Jan 2006)

Ablation of Idiopathic Ventricular Tachycardia with a Left Bundle-Branch Block Morphology Originating from the Pulmonary Artery

Hiroshi Ogi, MD,
Yukiko Nakano, MD,
Noboru Oda, MD,
Miwa Miyoshi, MD,
Kazuaki Chayama, MD,
Ken Ishibashi, MD,
Yuko Hirai, MD,
Tomokazu Okimoto, MD

Affiliations

Hiroshi Ogi, MD: Department of Medicine and Molecular Science, Graduate School of Biomedical Science, Hiroshima University
Yukiko Nakano, MD: Department of Medicine and Molecular Science, Graduate School of Biomedical Science, Hiroshima University
Noboru Oda, MD: Department of Medicine and Molecular Science, Graduate School of Biomedical Science, Hiroshima University
Miwa Miyoshi, MD: Department of Medicine and Molecular Science, Graduate School of Biomedical Science, Hiroshima University
Kazuaki Chayama, MD: Department of Medicine and Molecular Science, Graduate School of Biomedical Science, Hiroshima University
Ken Ishibashi, MD: Department of Molecular Internal Medicine, Graduate School of Biomedical Science, Hiroshima University
Yuko Hirai, MD: Department of Molecular Internal Medicine, Graduate School of Biomedical Science, Hiroshima University
Tomokazu Okimoto, MD: Department of Molecular Internal Medicine, Graduate School of Biomedical Science, Hiroshima University

DOI: https://doi.org/10.1016/S1880-4276(06)80017-7
Journal volume & issue: Vol. 22, no. 3
pp. 180 – 186

Abstract

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We successfully performed radiofrequency catheter ablation (RFCA) in 2 cases involving patients with idiopathic ventricular tachycardias (VTs) and premature ventricular contractions (PVCs) originating from the pulmonary artery (PA). The QRS morphology of the VTs and PVCs in the two cases exhibited a left bundle-branch block (LBBB) morphology with an inferior axis. Activation and pace mappings were performed in the right ventricular outflow tract (RVOT) and above the pulmonary valve to determine the origin of the VTs and PVCs. In both cases, the earliest ventricular activation was recorded in the PA above the pulmonary valve. Applications of radiofrequency current at those sites in the PA resulted in the elimination and noninducibility of the VT and PVC. During the follow-up, the VT or PVC did not recur without any antiarrhythmic drug administration.

Published in Journal of Arrhythmia

ISSN: 1880-4276 (Print); 1883-2148 (Online)
Publisher: Wiley
Country of publisher: Australia
LCC subjects: Medicine: Internal medicine: Specialties of internal medicine: Diseases of the circulatory (Cardiovascular) system
Website: https://onlinelibrary.wiley.com/journal/18832148

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Abstract

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