A new modeling of the overlapping T wave for the efficient estimation of the P-R intervals during exercise and recovery.
The analysis of the heart period series is a difficult task especially under graded exercise conditions. Having a good tool to characterize the P-R and R-R intervals, i.e. a good method of time delay estimation, would carry out a better knowledge of the neural activity during exercise and recovery in the field of pacemaker's design. Unfortunately, for the P-R intervals, the problem of estimation has been rarely addressed. In this paper, we propose a new method for estimating the P-R intervals based on an iterative Maximum-Likelihood approach. The main contribution is to take into account the overlapping T wave on ECG recorded during exercise. The goal of this study is to compute a model of the T wave which overlaps the P wave and then to cancel this influence before the determination of the P-R intervals.
Cabasson
A
A
Laboratory I3S-CNRS, University of Nice-Sophia Antipolis, 2000 Route des Lucioles, Sophia Antipolis cedex, France. cabasson@i3s.unice.fr
Meste
O
O
Blain
G
G
Bermon
S
S
D004562:Electrocardiography; D001330:Electronic Data Processing / Q000379:methods; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008955:Models, Cardiovascular; D010138:Pacemaker, Artificial; D012063:Relaxation / Q000502:physiology*