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
em 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.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Músculos Papilares
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Complexos Ventriculares Prematuros
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Ablação por Radiofrequência
Tipo de estudo:
Prognostic_studies
Limite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article