High-density mapping for catheter ablation of premature ventricular complexes originating from left ventricular papillary muscles: A case series.
Pacing Clin Electrophysiol
; 41(9): 1071-1077, 2018 09.
Article
en En
| MEDLINE
| ID: mdl-29947109
ABSTRACT
PURPOSE:
Ablation of premature ventricular complexes (PVCs) originating from left-sided papillary muscles is challenging. We tested a new approach by performing high-density mapping of PVC. METHODS ANDRESULTS:
We used a 20-pole deflectable spiral catheter during ablation procedures in four consecutive patients. Three presented with mitral valve prolapse, one with dilated cardiomyopathy. PVC burden was 24 ± 13%. The procedures lasted 182 ± 55.4 minutes, including 10 ± 3.2 minutes of radiofrequency. In all patients, mapping evidenced internal primary activation relative to the left ventricle shell (mean distance 21.3 ± 5.1 mm). Endocavitary prematurity was -38.3 ± 4.8 ms. Primary ablation success was achieved for all patients.CONCLUSIONS:
High-density mapping of the papillary muscles in the left ventricle using a spiral catheter may be feasible. We identified the PVC foci away from the left ventricular shell. This consolidates the assumption for the origin of these ectopic beats at the junction between the chordae tendineae and the papillary muscles.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Músculos Papilares
/
Complejos Prematuros Ventriculares
/
Ablación por Radiofrecuencia
Tipo de estudio:
Prognostic_studies
Límite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Pacing Clin Electrophysiol
Año:
2018
Tipo del documento:
Article
País de afiliación:
Francia