DocumentCode :
674638
Title :
Measures of right atrial organization as a means to select candidates for sinus rhythm restoration by catheter ablation
Author :
Buttu, Andrea ; Forclaz, A. ; Pascale, P. ; Maury, P. ; Rollin, A. ; Vesin, Jm ; Pruvot, E.
Author_Institution :
Appl. Signal Process. Group, Swiss Fed. Inst. of Technol., Lausanne, Switzerland
fYear :
2013
fDate :
22-25 Sept. 2013
Firstpage :
1051
Lastpage :
1054
Abstract :
Stepwise catheter ablation (step-CA) can terminate long-standing persistent atrial fibrillation (LS-pAF) within the left atrium (LA) or may require additional right atrial (RA) ablation. Intracardiac organization indices such as AF cycle length (AFCL) have been used to track the efficiency of step-CA, but predictive parameters of procedural success are lacking. In this study, we hypothesized that the oscillations of time intervals between consecutive AF wavefronts reflect the underlying AF dynamic. We report a new method for quantifying the temporal variability of atrial activation wavefronts (VAW). Our results suggest that the mean and variance of the oscillations around the mean AFCL computed before any ablation can identify patients whose LS-pAF will terminate within the left atrium. These findings are indicative of a higher baseline organization in AF terminated within the left atrium.
Keywords :
bioelectric potentials; cardiology; catheters; medical signal detection; medical signal processing; patient treatment; VAW temporal variability quantification; atrial activation wavefronts; intracardiac organization indices; left atrial ablation; long-standing persistent atrial fibrillation; mean atrial fibrillation cycle length computation; patient identification; right atrial ablation; right atrial organization measures; sinus rhythm restoration; stepwise catheter ablation; Abstracts; Force; Heart; Organizations; Physiology; Veins;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computing in Cardiology Conference (CinC), 2013
Conference_Location :
Zaragoza
ISSN :
2325-8861
Print_ISBN :
978-1-4799-0884-4
Type :
conf
Filename :
6713561
Link To Document :
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