Clinical and electrophysiological characteristics of ventricular arrhythmias arising from pulmonary cusps.
RVOT PVC
VT
supravalvular PVC
Journal
Journal of arrhythmia
ISSN: 1880-4276
Titre abrégé: J Arrhythm
Pays: Japan
ID NLM: 101263026
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
07
01
2020
revised:
04
03
2020
accepted:
10
03
2020
entrez:
13
6
2020
pubmed:
13
6
2020
medline:
13
6
2020
Statut:
epublish
Résumé
Ventricular arrhythmias (VAs) have been successfully ablated from the pulmonary sinus cusps establishing pulmonary artery (PA) as a distinct site of arrhythmic foci. The aim of the present study was to determine the clinical presentation, electrocardiographic, and ablation characteristics of PA-VAs. Thirty consecutive patients with right ventricular outflow tract (RVOT)-type VAs were included in this retrospective study. Three-dimensional electroanatomic mapping was performed in all patients. Mapping was performed initially in RVOT, and later within the PA. Mapping was performed in the PA if there was no early activation, unsatisfactory pace-map, or ablation in RVOT were unsuccessful. All PA-VAs were mapped and ablated by looping the catheter in a reverse U fashion. Among 30 patients, 8 (26.6%) patients VAs were successfully ablated within PA. Electrocardiography (ECG) revealed that the QRS duration was significantly wider in the PA-VAs group compared to the RVOT-VAs group (155 ± 14.14 vs 142.40 ± 8.12 ms, Pulmonary artery-VAs are an important subset of VA originating from the outflow tract. They have a wider baseline QRS duration compared to RVOT-VAs. Presence of a prepotential aids in the identification of a successful ablation site. Mapping utilizing the reversed U method can help in localization and successful ablation of PA-VAs.
Identifiants
pubmed: 32528574
doi: 10.1002/joa3.12347
pii: JOA312347
pmc: PMC7280010
doi:
Types de publication
Journal Article
Langues
eng
Pagination
471-477Informations de copyright
© 2020 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society.
Déclaration de conflit d'intérêts
The authors declare no conflict of interests for this article.
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