Title :
The dimension of 2D and 3D Poincare plots obtained from 24 hour ECG registrations
Author :
Haaksma, J. ; Brouwer, J. ; Dijk, WA ; Dassen, WRM ; van Veldhuisen, D.
Author_Institution :
Academisch Ziekenhuis Groningen, Netherlands
Abstract :
The dimension is a basic concept in non linear dynamics. The box counting dimension (BCD) is one of the methods that is available to determine the dimension. We studied the dimension of the heartrate signal in both 2 and 3D Poincare plots in a group of twenty five post myocardial infarction (MI) patients together with an age and sex matched control group. The average BCD from the normal subjects based on a 2D first return plot was 1.46±0.09, while in the infarction group this was significantly lower: 1.34±0.17 (p=0.003). Excluding ectopic data from the analysis caused large changes in the resulting dimension.
Keywords :
Poincare mapping; electrocardiography; medical signal processing; nonlinear dynamical systems; ECG registrations; Poincare plots; box counting dimension; control group; ectopic data; infarction group; nonlinear dynamics; post myocardial infarction patients; Cardiology; Data analysis; Electrocardiography; Heart rate variability; Myocardium; Patient monitoring; Performance analysis; Rhythm; Spectral analysis; Time series analysis;
Conference_Titel :
Computers in Cardiology, 2002
Print_ISBN :
0-7803-7735-4
DOI :
10.1109/CIC.2002.1166807
