Analysis of local electrograms at successful and unsuccessful sites for slow pathway ablation of atrioventricular nodal reentrant tachycardia.
Indian Heart J
;
1997 Jul-Aug; 49(4): 397-401
Artigo
em Inglês
| IMSEAR
| ID: sea-2888
ABSTRACT
Anatomic and electrogram approaches have been described for ablation of slow pathway in patients with atrioventricular nodal tachycardia. The purpose of this study was to identify parameters to predict successful slow pathway ablation using the anatomic approach. Local electrograms at successful and unsuccessful sites were compared in 36 patients undergoing slow pathway ablation using anatomic approach. A total of 208 local electrograms were studied. Fragmented atrial electrogram was seen in 24/36 (67%) of successful and in 46/172 (26%) of unsuccessful sites (p < 0.001). The sensitivity, specificity and positive and negative predictive values of fragmented atrial electrogram were 67, 73, 34 and 91 percent respectively. A slow pathway potential was noted in three of successful sites. There was no difference in the atrial to ventricular amplitude ratio in these sites. In conclusion, fragmentation of atrial electrogram and presence of possible slow pathway potential are seen more often at successful than at unsuccessful sites. In our opinion, while using an anatomic approach for slow pathway ablation, an analysis of local electrogram may help in identifying the proper site and avoiding unnecessary radiofrequency energy delivery.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Taquicardia por Reentrada no Nó Atrioventricular
/
Idoso
/
Feminino
/
Humanos
/
Masculino
/
Valor Preditivo dos Testes
/
Sensibilidade e Especificidade
/
Resultado do Tratamento
/
Ablação por Cateter
/
Adulto
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
Idioma:
Inglês
Revista:
Indian heart j
Ano de publicação:
1997
Tipo de documento:
Artigo
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