NDLI: Stability and correlation of electrogram organization and synchronization indices during Atrial Fibrillation

Content Provider	IEEE Xplore Digital Library
Author	Simon, F. Arenal, A. Laguna, P. Martinez, J.P.
Copyright Year	2009
Description	Author affiliation: Department of Cardiology, Gregorio Marañón General University Hospital, Madrid, Spain (Arenal, A.) \|\| Comunications Technology Group, I3A, University of Zaragoza, Spain (Simon, F.; Laguna, P.; Martinez, J.P.)
Abstract	In this work we perform a statistical study of organization and synchronization indices in electrogram (EGM) signals obtained during ablation surgery in patients with Atrial Fibrillation (AF). We have considered organization, synchronization and delay indices, obtaining by three different ways, spectral, cross-correlation and wavefront analysis: dominant frequency, $f^{D},$ regularity index, $I^{R},$ organization index, $I^{O},$ coherence, Г, cross-correlation, ρ and T , interquartile consistency, $C^{IQR},$ normalized consistency measure, CE, and median delay μ (computed all in 10-second excerpts). We have studied their temporal and spatial stability, and the correlation between pairs of in-dices. We found that all organization indices are stable measures (CV ≪0.2) along time and a decrease in the synchronization degree with the increase of distance between electrodes.
Starting Page	149
Ending Page	152
File Size	400281
Page Count	4
File Format	PDF
ISBN	9781424472819
ISSN	02766547
e-ISBN	9781424472826
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Computers in Cardiology(CinC)
Subject Keyword	Atrial fibrillation Frequency synchronization Catheters Cardiology Hospitals Propagation delay Electrodes Catheterization Stability analysis Biomedical engineering
Content Type	Text
Resource Type	Article

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