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Non-Invasive Estimates of Left Atrial Activation in a Patient with Dissociated Left Atrial Tachycardia following Ablation of Atrial Fibrillation

Platonov, Pyotr LU ; Nault, I.; Stridh, Martin LU ; Holmqvist, Fredrik LU and Haissaguerre, M. (2009) 36th Annual Computers in Cardiology Conference, 2009 In CINC: 2009 36TH Annual Computers In Cardiology Conference p.133-136
Abstract
Introduction: Interatrial frequency gradient is used to guide catheter ablation of atrial fibrillation (AF) but reliable tools for its non-invasive estimation are lacking. We present a patient with dissociated left and right atrial rhythms that allows identification of sum face ECG leads that closely reflect left atrial activity. Methods: 12-lead ECG was recorded simultaneously with electrograms from the right and left atrial appendages (RAA/LAA). AF frequency spectra have been calculated from all 12 leads using spatiotemporal QRST cancellation and Welch periodogram. The dominating atrial cycle length (ACL) in the surface ECG leads was subsequently compared with ACL(LAA). Results: RAA and LAA cycle lengths were 1276 ins and 252 ins... (More)
Introduction: Interatrial frequency gradient is used to guide catheter ablation of atrial fibrillation (AF) but reliable tools for its non-invasive estimation are lacking. We present a patient with dissociated left and right atrial rhythms that allows identification of sum face ECG leads that closely reflect left atrial activity. Methods: 12-lead ECG was recorded simultaneously with electrograms from the right and left atrial appendages (RAA/LAA). AF frequency spectra have been calculated from all 12 leads using spatiotemporal QRST cancellation and Welch periodogram. The dominating atrial cycle length (ACL) in the surface ECG leads was subsequently compared with ACL(LAA). Results: RAA and LAA cycle lengths were 1276 ins and 252 ins respectively. Of all surface ECG leads, AF frequency spectra in leads VI and aVR demonstrated the best agreement with ACL(LAA) showing prominent peaks corresponding to the LAA activation frequency. Conclusion: Leads VI and aVR contain a prominent left atrial component that has to be considered when interpreting fibrillatry activity from sum face ECG. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
CINC: 2009 36TH Annual Computers In Cardiology Conference
pages
133 - 136
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
36th Annual Computers in Cardiology Conference, 2009
external identifiers
  • wos:000279344300034
  • scopus:77952721642
ISSN
0276-6574
ISBN
978-1-4244-7281-9
language
English
LU publication?
yes
id
737107c9-e8b6-4a3b-9627-27e6295dc306 (old id 1628594)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5445453&tag=1
date added to LUP
2010-07-23 08:47:57
date last changed
2017-01-01 06:18:48
@inproceedings{737107c9-e8b6-4a3b-9627-27e6295dc306,
  abstract     = {Introduction: Interatrial frequency gradient is used to guide catheter ablation of atrial fibrillation (AF) but reliable tools for its non-invasive estimation are lacking. We present a patient with dissociated left and right atrial rhythms that allows identification of sum face ECG leads that closely reflect left atrial activity. Methods: 12-lead ECG was recorded simultaneously with electrograms from the right and left atrial appendages (RAA/LAA). AF frequency spectra have been calculated from all 12 leads using spatiotemporal QRST cancellation and Welch periodogram. The dominating atrial cycle length (ACL) in the surface ECG leads was subsequently compared with ACL(LAA). Results: RAA and LAA cycle lengths were 1276 ins and 252 ins respectively. Of all surface ECG leads, AF frequency spectra in leads VI and aVR demonstrated the best agreement with ACL(LAA) showing prominent peaks corresponding to the LAA activation frequency. Conclusion: Leads VI and aVR contain a prominent left atrial component that has to be considered when interpreting fibrillatry activity from sum face ECG.},
  author       = {Platonov, Pyotr and Nault, I. and Stridh, Martin and Holmqvist, Fredrik and Haissaguerre, M.},
  booktitle    = {CINC: 2009 36TH Annual Computers In Cardiology Conference},
  isbn         = {978-1-4244-7281-9},
  issn         = {0276-6574},
  language     = {eng},
  pages        = {133--136},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Non-Invasive Estimates of Left Atrial Activation in a Patient with Dissociated Left Atrial Tachycardia following Ablation of Atrial Fibrillation},
  year         = {2009},
}