Title :
Long-term symbolic dynamics for heart rate variability analysis in patients with dilated cardiomyopathy
Author :
Wessel, N. ; Brueckner, Ch ; Malberg, H. ; Schumann, A. ; Reinsperger, F. ; Osterziel, KJ ; Schirdewan, A. ; Voss, A.
Author_Institution :
Univ. of Applied Scis., Jena, Germany
fDate :
6/21/1905 12:00:00 AM
Abstract :
This study was designed to improve the prognostic value of heart rate variability (HRV) in patients with dilated cardiomyopathy (DCM) using a new method of long-term symbolic dynamics. DCM patients show a decreased HRV in comparison to healthy subjects (p<0.03). A lower ejection fraction leads to a further reduction in HRV (p<0.01). Moreover, the DCM patients exhibit a decreased low frequency component (p<0.001). The Renyi-entropy of the word distribution as a method of long-term symbolic dynamics show the most significant differences between the LVEF<27% and >27% group (p<0.001). The new non-linear method of symbolic dynamics leads to an increased diagnostic precision in characterizing DCM patients
Keywords :
diseases; electrocardiography; frequency-domain analysis; medical signal processing; ECG analysis; Renyi-entropy; decreased low frequency component; dilated cardiomyopathy patients; ejection fraction; heart disease; heart rate variability analysis; increased diagnostic precision; long-term symbolic dynamics; nonlinear method; Cardiology; Electrocardiography; Frequency; Heart rate; Heart rate variability; Linear algebra; Medical diagnostic imaging; Memory; Nonlinear dynamical systems; Testing;
Conference_Titel :
Computers in Cardiology, 1999
Conference_Location :
Hannover
Print_ISBN :
0-7803-5614-4
DOI :
10.1109/CIC.1999.825954
