Title :
Model for RT-RR variability interaction assessment
Author :
Porta, A. ; Baselli, G. ; Caiani, E. ; Scarpellini, G. ; Sandrone, G. ; Malliani, A. ; Cerutti, S. ; Lombardi, F.
Author_Institution :
Dipartimento di Bioingegneria, Politecnico di Milano, Italy
Abstract :
A parametric dynamic model to evaluate the dependence of the ventricular repolarization duration on the heart period and on different not measurable inputs is proposed. Its parameters were identified from the beat-to-beat series of the cardiac cycle duration (RR interval) and ventricular repolarization period (RT period). Indexes relevant to the RT-RR relationship both in time and in frequency domain were extracted and validated in human subjects during experimental conditions known to alter the RT-RR coupling and/or sympatho-vagal balance.
Keywords :
electrocardiography; frequency-domain analysis; medical signal processing; physiological models; time-domain analysis; ECG; RR interval; RT-RR coupling; beat-to-beat series; cardiac cycle duration; electrodiagnostics; parametric dynamic model; sympatho-vagal balance; ventricular repolarization duration; ventricular repolarization period; Autonomic nervous system; Autoregressive processes; Cardiac disease; Equations; Heart rate interval; Humans; Portals; Time measurement; Transfer functions; White noise;
Conference_Titel :
Computers in Cardiology, 1996
Conference_Location :
Indianapolis, IN, USA
Print_ISBN :
0-7803-3710-7
DOI :
10.1109/CIC.1996.542528
