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- W3030253019 abstract "ObjectiveThis study aimed to evaluate the efficacy and safety of catheter ablation for premature ventricular contractions (PVCs) or ventricular tachycardia (VT) originating from right ventricular non-outflow tract (RVNOT) in pediatric patients.MethodsTwelve children [mean ages were (7.1±3.1) years, 7 males] with RVNOT PVCs/VT underwent catheter ablation. Seven patients had enlarged left ventricle (LV), and 3 patients had decreased left ventricular (LV) ejection fraction (LVEF)<55%. Among them, 2 with VT (2.5 years old and 8 years old, respectively) had severe dilated LV and both had LVEF<40%. All the patients had catheter ablation under the guidance of the three-dimensional mapping.ResultsA total of 14 PVCs/VT occurred, and all originated from RVNOT. The PVCs/VT originated from tricuspid annulus in 6, basal free wall in 5, near apex in 2, and septal portion near HIS bundle in 1. Catheter ablation was immediately successful in 11 patients with PVCs/VT without any complications. During a follow-up period of (9.2±3.5) months, 11 patients had no PVC/VTs recurrence. One patient had intermittent VT recurrence with oral amiodarone and the VT rate was decreased from 160 bpm to 130 bpm. Ablation was successful in 11/12 (91.7%) patients. And all children with severe dilated LV before ablation had normal LV diameter.ConclusionOur preliminary data showed that catheter ablation under the guidance of three-dimensional mapping is effective and safe for treatment of RVNOT PVCs/VT in pediatric patients.Key words: Right ventricle; Non-ventricular outflow tract; Premature ventricular contraction; Ventricular tachycardia; Catheter ablation; Three-dimensional mapping" @default.
- W3030253019 created "2020-06-05" @default.
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- W3030253019 date "2017-10-28" @default.
- W3030253019 modified "2023-09-26" @default.
- W3030253019 title "Catheter ablation of premature ventricular contractions and ventricular tachycardia originating from right ventricular non-outflow tract in children" @default.
- W3030253019 doi "https://doi.org/10.3760/cma.j.issn.1007-6638.2017.05.004" @default.
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