Non-linear dynamics of atrial rate during atrial fibrillation assessed by recurrence plot analysis

Author

Censi, F. ; Barbaro, V. ; Bartolini, P. ; Calcagnini, G. ; Cerutti, S.

Author_Institution

Lab. of Biomed. Eng., Ist. Superiore di Sanita, Rome, Italy

fYear

1998

fDate

13-16 Sep 1998

Firstpage

197

Lastpage

200

Abstract

The aim of this study was to use Recurrence Plot Analysis to test the hypothesis of deterministic non-linear dynamics of Atrial Period (AP) during type I Atrial Fibrillation (AF) (Wells´ classification). The authors used three variables to quantify Recurrence Plots: Percent Recurrence (PR), Percent Determinism (PD) and Entropy of Recurrences (ER). They analyzed bipolar intra-atrial electrograms of electrically induced AF recorded in 3 different atrial sites in 15 informed subjects. The AP of each each site was obtained by using a peak detection algorithm based on threshold crossing. The authors compared the real data results with those obtained from their stochastic surrogate series (phase randomization). PR, PD and ER values obtained for the surrogate data were significantly lower than those values from original data, confirming the hypothesis of a nonlinear deterministic dynamics of the atrial depolarization period during AF

Keywords

electrocardiography; medical signal processing; Wells´ classification; atrial depolarization period; atrial fibrillation; atrial rate; bipolar intraatrial electrograms; deterministic nonlinear dynamics; peak detection algorithm; recurrence plot analysis; threshold crossing; Atrial fibrillation; Biomedical engineering; Cardiology; Catheters; Data analysis; Electrodes; Erbium; Information analysis; Rhythm; Stochastic processes;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1998

Conference_Location

Cleveland, OH

ISSN

0276-6547

Print_ISBN

0-7803-5200-9

Type

conf

DOI

10.1109/CIC.1998.731767

Filename

731767