High atrioventricular phase index on near-field intracardiac electrogram is associated with risk of ventricular arrhythmia.
J Electrocardiol
; 48(6): 1027-31, 2015.
Article
en En
| MEDLINE
| ID: mdl-26336873
The purposes of this study were to characterize and quantify concordance between consecutive atrial and ventricular activation time points through analysis of phases and to explore its association with outcomes in patients with implantable cardioverter-defibrillator (ICD). Patients with structural heart disease and dual-chamber ICDs underwent 5min baseline right ventricular (V) near-field and atrial (A) electrogram (EGM) recording. The cross-dependencies of phase dynamics of the changes in consecutive A (AA') and V (VV') were quantified and the AV phase dependency index was determined. In Cox regression analysis, a high AV phase index (in the highest quartile, >0.259) was significantly associated with higher risk of ventricular tachyarrhythmias (HR 2.84; 95% CI 1.05-7.67; P=0.04). In conclusion, in ICD patients with structural heart disease, high sinus AV phase dependency index on EGM is associated with the risk of ventricular arrhythmia.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fibrilación Ventricular
/
Taquicardia Ventricular
/
Desfibriladores Implantables
/
Técnicas Electrofisiológicas Cardíacas
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
America do norte
Idioma:
En
Revista:
J Electrocardiol
Año:
2015
Tipo del documento:
Article
Pais de publicación:
Estados Unidos