Trans-myocardial bipolar electrogram: A strategy for mapping and determining efficacy of bipolar ablation of deep foci.
Pacing Clin Electrophysiol
; 43(7): 760-762, 2020 07.
Article
em En
| MEDLINE
| ID: mdl-32227352
ABSTRACT
Mapping and ablation of intramural ventricular tachycardia (VT) remain a challenge. We developed a trans-myocardial electrogram recording across distal tips of two separate ablation catheters placed on contralateral sides of the myocardium to record a trans-myocardial bipole and a novel pacing electrode configuration. This trans-myocardial bipole was applied during bipolar ablation in a patient with septal VT. Local activation in this trans-myocardial bipole was similar to the earliest activation recorded from detailed activation maps from both sides of the septum. Pacing from this trans-myocardial bipole resulted in a perfect morphology match. After bipolar ablation, the trans-myocardial bipolar voltage decreased by 82%, and pacing threshold increased by 800%. These findings correlated with VT noninducibility.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Estimulação Cardíaca Artificial
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Taquicardia Ventricular
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Eletrocardiografia
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Mapeamento Epicárdico
Limite:
Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article