Double ventricular response by a single ventricular extrastimulus to the inner loop of reentry in a patient without apparent heart disease.
Pacing Clin Electrophysiol
; 23(11 Pt 1): 1691-4, 2000 Nov.
Article
en En
| MEDLINE
| ID: mdl-11138308
ABSTRACT
In a patient without apparent heart disease, a ventricular extrastimulus delivered from the left ventricular apex where the electrogram was recorded 30 ms after the onset of the QRS complex during VT advanced the second QRS complex, but not the first QRS complex. The morphology of the second QRS complex was the same as that of VT. The postpacing interval was the same as the cycle length of the VT. These findings indicated that the site of stimulation was at the inner loop of the reentry circuit of the VT. A ventricular extrastimulus with a shorter coupling interval advanced the first and second QRS complexes, indicating that the ventricle was activated by antidromic and orthodromic activation from the extrastimulus. Radiofrequency ablation at that site of stimulation terminated the VT and no further VT could be induced.
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Banco de datos:
MEDLINE
Asunto principal:
Estimulación Cardíaca Artificial
/
Taquicardia Ventricular
/
Ablación por Catéter
/
Sistema de Conducción Cardíaco
Tipo de estudio:
Diagnostic_studies
Límite:
Aged
/
Humans
/
Male
Idioma:
En
Año:
2000
Tipo del documento:
Article