Radiofrequency catheter ablation of idiopathic ventricular tachycardia and symptomatic premature ventricular contraction originating from valve annulus / 中华医学杂志(英文版)
Chinese Medical Journal
; (24): 2241-2245, 2008.
Article
em En
| WPRIM
| ID: wpr-350735
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>BACKGROUND</b>Radiofrequency catheter ablation (RFCA) has been established as an effective and curative therapy for ventricular tachycardia (VT) and severely symptomatic premature ventricular contraction (PVC) from the outflow tract in structurally normal hearts. This study aimed to investigate electrophysiologic characteristics and effects of RFCA for patients with idiopathic VT and symptomatic PVC originating from the valve annulus.</p><p><b>METHODS</b>Characteristics of body surface electrocardiogram (ECG) and endocardiogram in a successful RFCA target were analyzed in 16 patients with idiopathic VT and symptomatic PVC originating from the valve annulus. Additionally, the ECG characteristics of VT or PVC were compared with those of manifest Wolff-Parkinson-White (WPW) syndrome originating from the same site of origin in 15 patients.</p><p><b>RESULTS</b>Thirteen patients were successful, 2 recurrent and 1 failed. The recurrent cases underwent successful ablation the second time guided by the Ensite 3000 mapping system. In all patients with the WPW syndrome, the characteristics of QRS morphology were well matched with those of the VT and PVC that originated from corresponding sites of origin.</p><p><b>CONCLUSIONS</b>RFCA is an effective curative therapy for VT and symptomatic PVC originating from the valve annulus. There are specific characteristics in ECG and the ablation site could be located by means of the WPW syndrome accessory pathway's algorithm.</p>
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Cirurgia Geral
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Taquicardia Ventricular
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Ablação por Cateter
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Complexos Ventriculares Prematuros
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Eletrocardiografia
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Métodos
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Valva Mitral
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
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Aged
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Female
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Humans
/
Male
Idioma:
En
Revista:
Chinese Medical Journal
Ano de publicação:
2008
Tipo de documento:
Article