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Entropy at the right atrium as a predictor of atrial fibrillation recurrence outcome after pulmonary vein ablation

Entropy at the right atrium as a predictor of atrial fibrillation recurrence outcome after... AbstractAtrial fibrillation (AF) recurrence rates after successful ablation procedures are still high and difficult to predict. This work studies the capability of entropy measured from intracardiac recordings as an indicator for recurrence outcome. Intra-atrial recordings from 31 AF patients were registered previously to an ablation procedure. Four electrodes were located at the right atrium (RA) and four more at the left atrium (LA). Sample entropy measurements were applied to these signals, in order to characterize different non-linear AF dynamics at the RA and LA independently. In a 3 months follow-up, 19 of them remained in sinus rhythm, whereas the other 12 turned back to AF. Entropy values can be associated to a proarrhythmic indicator as they were higher in patients with AF recurrence (1.11±0.15 vs. 0.91±0.13), in persistent patients (1.03±0.19 vs. 0.96±0.15), and at the LA with respect to the RA (1.03±0.23 vs. 0.89±0.15 for paroxysmal AF patients). Furthermore, entropy values at the RA arose as a more reliable predictor for recurrence outcome than at the LA. Results suggest that high entropy values, especially at the RA, are associated with high risk of AF recurrence. These findings show the potential of the proposed method to predict recurrences post-ablation, providing additional insights to the understanding of arrhythmia. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biomedical Engineering / Biomedizinische Technik de Gruyter

Entropy at the right atrium as a predictor of atrial fibrillation recurrence outcome after pulmonary vein ablation

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Publisher
de Gruyter
Copyright
©2016 by De Gruyter
ISSN
1862-278X
eISSN
1862-278X
DOI
10.1515/bmt-2014-0172
pmid
26107849
Publisher site
See Article on Publisher Site

Abstract

AbstractAtrial fibrillation (AF) recurrence rates after successful ablation procedures are still high and difficult to predict. This work studies the capability of entropy measured from intracardiac recordings as an indicator for recurrence outcome. Intra-atrial recordings from 31 AF patients were registered previously to an ablation procedure. Four electrodes were located at the right atrium (RA) and four more at the left atrium (LA). Sample entropy measurements were applied to these signals, in order to characterize different non-linear AF dynamics at the RA and LA independently. In a 3 months follow-up, 19 of them remained in sinus rhythm, whereas the other 12 turned back to AF. Entropy values can be associated to a proarrhythmic indicator as they were higher in patients with AF recurrence (1.11±0.15 vs. 0.91±0.13), in persistent patients (1.03±0.19 vs. 0.96±0.15), and at the LA with respect to the RA (1.03±0.23 vs. 0.89±0.15 for paroxysmal AF patients). Furthermore, entropy values at the RA arose as a more reliable predictor for recurrence outcome than at the LA. Results suggest that high entropy values, especially at the RA, are associated with high risk of AF recurrence. These findings show the potential of the proposed method to predict recurrences post-ablation, providing additional insights to the understanding of arrhythmia.

Journal

Biomedical Engineering / Biomedizinische Technik – de Gruyter

Published: Feb 1, 2016

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    Lo
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    Ganesan
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    Lake
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    Solheim
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    Hsieh
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    Camm
  • ECAS expert consensus statement on catheter and surgical ablation of atrial fibrillation : recommendations for patient selection procedural techniques patient management and follow - up definitions endpoints and research trial design
    Calkins
  • Sinai On the notion of entropy of a dynamical system
    Dokl Russ
  • Spectral analysis identifies sites of high - frequency activity maintaining atrial fibrillation in humans
    Sanders
  • The mathematical theory of communication University of Illinois
    Shannon
  • Noninvasive panoramic mapping of human atrial fibrillation mechanisms : a feasibility report
    Haïssaguerre
  • Schotten The need for standardization of time - and frequency - domain analysis of body surface electrocardiograms for assessment of the atrial fibrillation substrate
    Maesen
  • Characteristics and distribution of complex fractionated atrial electrograms and the dominant frequency during atrial fibrillation : relationship to the response and outcome of circumferential pulmonary vein isolation
    Okumura
  • technique for measurements of the extent of spatial organization of atrial activation during atrial fibrillation in the intact human heart
    Botteron
  • Catheter ablation for atrial fibrillation
    Lubitz
  • Approximate entropy as complexity measure
    Pincus
  • Clinical outcome of very late recurrence of atrial fibrillation after catheter ablation of paroxysmal atrial fibrillation
    Hsieh