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Time-frequency characterization of simultaneous intra-atrial and electrocardiographic recordings during atrial fibrillation

Stridh, Martin LU ; Bollmann, Andreas ; Husser, D ; Bhandari, A ; Cannom, D and Sörnmo, Leif LU (2005) Computers in Cardiology, 2005 32. p.347-350
Abstract
A new method for characterization of simultaneous intra-atrial and ECG recordings during atrial fibrillation (AF) is presented. With different preprocessing, both types of signals are characterized using a logarithmic time-frequency distribution from which trends of frequency, regularity, morphology (only ECG) and signal quality are extracted. The objective of the study is to relate ECG measures of rate and morphology to measures of intra-atrial organisation. The algorithm has been tested on a database with simultaneous ECG and right atrial recordings from 34 patients with drug-refractory AF. The average frequency in lead V<sub>1</sub> was 5.91 Hz (std=0.94) and the average exponential decay of harmonic magnitudes (reflecting... (More)
A new method for characterization of simultaneous intra-atrial and ECG recordings during atrial fibrillation (AF) is presented. With different preprocessing, both types of signals are characterized using a logarithmic time-frequency distribution from which trends of frequency, regularity, morphology (only ECG) and signal quality are extracted. The objective of the study is to relate ECG measures of rate and morphology to measures of intra-atrial organisation. The algorithm has been tested on a database with simultaneous ECG and right atrial recordings from 34 patients with drug-refractory AF. The average frequency in lead V<sub>1</sub> was 5.91 Hz (std=0.94) and the average exponential decay of harmonic magnitudes (reflecting the morphology) in V<sub>1</sub> was 1.31 (std=0.38); their correlation coefficient was 0.53 (p<0.001). The correlation coefficient between spatial frequency dispersion in the right atrium and harmonic decay was 0.53 (p<0.005). More organized AF, observed in patients treated with amiodarone, was reflected by a lower frequency, smaller right atrial frequency dispersion and lower exponential decay (Less)
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author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
harmonic decay, right atrium, electrocardiography, intra-atrial recordings, atrial fibrillation, ECG, spatial frequency dispersion, logarithmic time-frequency distribution, correlation coefficient, drug-refractory AF
host publication
Computers in Cardiology 2005
volume
32
pages
4 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
Computers in Cardiology, 2005
conference location
Lyon, France
conference dates
2005-09-25 - 2005-09-28
external identifiers
  • wos:000236378300088
  • scopus:33748091976
ISBN
0-7803-9337-6
DOI
10.1109/CIC.2005.1588108
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Department of Electroscience (011041000)
id
57706479-a119-4364-9e91-2d98281ef546 (old id 615463)
alternative location
http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel5/10588/33465/01588108.pdf
date added to LUP
2016-04-04 09:59:46
date last changed
2020-09-09 03:50:25
@inproceedings{57706479-a119-4364-9e91-2d98281ef546,
  abstract     = {A new method for characterization of simultaneous intra-atrial and ECG recordings during atrial fibrillation (AF) is presented. With different preprocessing, both types of signals are characterized using a logarithmic time-frequency distribution from which trends of frequency, regularity, morphology (only ECG) and signal quality are extracted. The objective of the study is to relate ECG measures of rate and morphology to measures of intra-atrial organisation. The algorithm has been tested on a database with simultaneous ECG and right atrial recordings from 34 patients with drug-refractory AF. The average frequency in lead V&lt;sub&gt;1&lt;/sub&gt; was 5.91 Hz (std=0.94) and the average exponential decay of harmonic magnitudes (reflecting the morphology) in V&lt;sub&gt;1&lt;/sub&gt; was 1.31 (std=0.38); their correlation coefficient was 0.53 (p&lt;0.001). The correlation coefficient between spatial frequency dispersion in the right atrium and harmonic decay was 0.53 (p&lt;0.005). More organized AF, observed in patients treated with amiodarone, was reflected by a lower frequency, smaller right atrial frequency dispersion and lower exponential decay},
  author       = {Stridh, Martin and Bollmann, Andreas and Husser, D and Bhandari, A and Cannom, D and Sörnmo, Leif},
  booktitle    = {Computers in Cardiology 2005},
  isbn         = {0-7803-9337-6},
  language     = {eng},
  pages        = {347--350},
  publisher    = {IEEE - Institute of Electrical and Electronics Engineers Inc.},
  title        = {Time-frequency characterization of simultaneous intra-atrial and electrocardiographic recordings during atrial fibrillation},
  url          = {http://dx.doi.org/10.1109/CIC.2005.1588108},
  doi          = {10.1109/CIC.2005.1588108},
  volume       = {32},
  year         = {2005},
}