PRINCIPAL COMPONENT ANALYSIS OF THE P-WAVE - Quantification of Not-Dipolar Components of Atrial Depolarization

Federica Censi, Giovanni Calcagnini, Pietro Bartolini, Chiara Ricci, Renato Pietro Ricci, Massimo Santini

Abstract

Aim of this study is to perform the principal component analysis (PCA) of the P-wave in patients prone to atrial fibrillation (AF). Eighteen patients affected by paroxysmal AF and implanted with dual chamber pacemakers were studied. Two 5-minute ECG recordings were performed: during spontaneous (SR) and paced rhythm (PR). ECG signals were acquired using a 32-lead mapping system (2048 Hz, 24 bit, 0-400 Hz bandwidth). For each patient, PCA of the averaged P-waves extracted in any of the 32 leads has been performed. We extracted PCA parameters related to the dipolar (using the first 3 PCs) and not dipolar (from the 4th to the 32nd PCs) components of the P-wave. The number of PCs according to the latent root criterion ranges between 2 and 3 during SR and between 2 and 4 during PR. PCA parameters related to the 3 largest PCs, and describing the dipolar component of the P-wave, did not significantly differ during SR and PR. The not dipolar components during SR were significantly lower than during PR (PCAres%: 0.03±0.06 vs 0.12±0.21, p=0.001; PCAres [mV4]: 0.10±0.14 vs 0.49±0.73, p=0.001). Factor analysis showed that on average all leads contributes to the first principal component.

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in Harvard Style

Censi F., Calcagnini G., Bartolini P., Ricci C., Pietro Ricci R. and Santini M. (2008). PRINCIPAL COMPONENT ANALYSIS OF THE P-WAVE - Quantification of Not-Dipolar Components of Atrial Depolarization . In Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008) ISBN 978-989-8111-18-0, pages 551-557. DOI: 10.5220/0001060005510557


in Bibtex Style

@conference{biosignals08,
author={Federica Censi and Giovanni Calcagnini and Pietro Bartolini and Chiara Ricci and Renato Pietro Ricci and Massimo Santini},
title={PRINCIPAL COMPONENT ANALYSIS OF THE P-WAVE - Quantification of Not-Dipolar Components of Atrial Depolarization},
booktitle={Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)},
year={2008},
pages={551-557},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001060005510557},
isbn={978-989-8111-18-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on Bio-inspired Systems and Signal Processing - Volume 2: BIOSIGNALS, (BIOSTEC 2008)
TI - PRINCIPAL COMPONENT ANALYSIS OF THE P-WAVE - Quantification of Not-Dipolar Components of Atrial Depolarization
SN - 978-989-8111-18-0
AU - Censi F.
AU - Calcagnini G.
AU - Bartolini P.
AU - Ricci C.
AU - Pietro Ricci R.
AU - Santini M.
PY - 2008
SP - 551
EP - 557
DO - 10.5220/0001060005510557