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J Interv Card Electrophysiol ; 51(3): 271-277, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29478174

RESUMEN

PURPOSE: Catheter ablation is an effective treatment for premature ventricular complexes (PVCs). Activation mapping is accurate but requires PVCs at the time of the ablation. Pace-mapping correlation (PMC) is a supplemental tool recently developed as an integrated module for an electro-anatomical mapping platform. Our study sought to investigate whether pace-mapping technology provides similar ablation results in patients with low versus high idiopathic PVC burden at the time of ablation and the relationship between sites with the highest PMC and the earliest local activation time (LAT). METHODS: A total of 59 consecutive patients undergoing catheter ablation for idiopathic PVCs were enrolled. Twelve out of 59 patients (20%) were classified in the low PVC burden group (defined as < 2 PVCs/min) and 47/59 (80%) in the high PVC burden group. RESULTS: The most common origin of PVCs was the right ventricular outflow tract (RVOT) followed by aortic cusps, coronary sinus, parahisian region, and aorto-mitral continuity. Procedural and 1-month success rate were 95 and 87% respectively. PVC burden at the time of ablation did not influence the success rate. The median distance between the earliest LAT points and the highest PMC points was 6.4 (4.9-10.6) mm. CONCLUSIONS: Pace-mapping correlation is useful and accurate in localizing the origin of idiopathic PVCs irrespective of the initial PVC burden. It provides optimal ablation results when combined with LAT. Success rate at mid-term follow-up is higher when the origin of PVCs is located in the RVOT as compared to other locations.


Asunto(s)
Mapeo del Potencial de Superficie Corporal/métodos , Ablación por Catéter/métodos , Complejos Prematuros Ventriculares/diagnóstico por imagen , Complejos Prematuros Ventriculares/cirugía , Factores de Edad , Anciano , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Medición de Riesgo , Índice de Severidad de la Enfermedad , Factores Sexuales , Resultado del Tratamiento
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