Radiofrequency catheter ablation at the left coronary cusp in treatment of repetitive monomorphic tachycardia of the left ventricular outflow tract / 中华医学杂志(英文版)
Chinese Medical Journal
; (24): 168-171, 2004.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-235810
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>BACKGROUND</b>The aim of this study was to clarify the electrocardiographic characteristics of repetitive monomorphic ventricular tachycardia (RMVT) originating from the left ventricular outflow tract, and to describe the results of treatment with radiofrequency catheter ablation (RFCA).</p><p><b>METHODS</b>Routine 12-lead surface electrocardiography and electrophysiological studies were performed on 11 RMVT patients with no organic heart disease, who were subsequently treated with RFCA directed at targets identified by pace mapping.</p><p><b>RESULTS</b>The surface electrocardiogram QRS characteristics of RMVT included an atypical left bundle branch block and right axis deviation, with a low amplitude "rs" or "rS" pattern in lead I, an "rS" or "RS" pattern in V1, and a precordial R wave transition zone in V2 or V3. In 1 patient, a small S wave was observed in V5. Using pace mapping techniques, we selected the left coronary cusp as the ablation target. RMVT was eliminated in all 11 patients immediately after radiofrequency energy delivered. During a follow-up of 13 +/- 7 months, RMVT recurred in only 1 patient.</p><p><b>CONCLUSION</b>RMVT originating from the left ventricular outflow tract has specific electrocardiographic characteristics, and can be successfully and safely cured using RFCA directed at the left coronary cusp.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Cirurgia Geral
/
Resultado do Tratamento
/
Taquicardia Ventricular
/
Ablação por Cateter
/
Eletrocardiografia
Tipo de estudo:
Estudo prognóstico
Limite:
Adolescente
/
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Chinese Medical Journal
Ano de publicação:
2004
Tipo de documento:
Artigo