open access

Vol 70, No 8 (2012)
Original articles
Published online: 2012-08-21
Submitted: 2012-12-28
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Frequency spectra analysis suggests outcomes in patients with paroxysmal atrial fibrillation

Sen Lei, Pihua Fang, Jun Liu, Yu Hou, Xiaofeng Li, Dongfang Cao, Shu Zhang
Kardiol Pol 2012;70(8):789-794.

open access

Vol 70, No 8 (2012)
Original articles
Published online: 2012-08-21
Submitted: 2012-12-28

Abstract

Background and aim: The purpose of this study was to determine the role of dominant frequency (DF) and organised index (OI) in outcomes of pulmonary vein (PV) isolation for paroxysmal atrial fibrillation (AF).

Methods: OI and DF of electrograms in coronary vein (CS) during AF were obtained by frequency spectra analysis in 60 patients with paroxysmal AF who underwent PV isolation. Based on the results of 12 months follow up, 14 patients with recurrent AF were included in group 1 and 46 patients with sinus rhythm were included in group 2.

Results: In group 1, no spectral component was reduced by PV isolation. Spectral components were reduced by PV isolation in 23 patients in group 2. The changes of DF after PV isolation was significantly different between groups 1 and 2 (1.2 ± 1.2 vs. 2.4 ± 1.3, p = 0.01); the increment of OI after PV isolation in group 1 was significantly lower than in group 2 (9 ± 13% vs. 22 ± 17%, p = 0.02).

Conclusions: A decrease in DF and an increase in OI after PV isolation may suggest a better clinical outcome.

Abstract

Background and aim: The purpose of this study was to determine the role of dominant frequency (DF) and organised index (OI) in outcomes of pulmonary vein (PV) isolation for paroxysmal atrial fibrillation (AF).

Methods: OI and DF of electrograms in coronary vein (CS) during AF were obtained by frequency spectra analysis in 60 patients with paroxysmal AF who underwent PV isolation. Based on the results of 12 months follow up, 14 patients with recurrent AF were included in group 1 and 46 patients with sinus rhythm were included in group 2.

Results: In group 1, no spectral component was reduced by PV isolation. Spectral components were reduced by PV isolation in 23 patients in group 2. The changes of DF after PV isolation was significantly different between groups 1 and 2 (1.2 ± 1.2 vs. 2.4 ± 1.3, p = 0.01); the increment of OI after PV isolation in group 1 was significantly lower than in group 2 (9 ± 13% vs. 22 ± 17%, p = 0.02).

Conclusions: A decrease in DF and an increase in OI after PV isolation may suggest a better clinical outcome.

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Keywords

atrial fibrillation; frequency spectra analysis; dominant frequency; organised index; pulmonary vein isolation

About this article
Title

Frequency spectra analysis suggests outcomes in patients with paroxysmal atrial fibrillation

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 70, No 8 (2012)

Pages

789-794

Published online

2012-08-21

Bibliographic record

Kardiol Pol 2012;70(8):789-794.

Keywords

atrial fibrillation
frequency spectra analysis
dominant frequency
organised index
pulmonary vein isolation

Authors

Sen Lei
Pihua Fang
Jun Liu
Yu Hou
Xiaofeng Li
Dongfang Cao
Shu Zhang

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