Abstract
We analyze heartbeat sequences with a dynamic model that satisfactorily reproduces both the long- and the short-time statistical properties of heart beating. These properties are expressed quantitatively by means of two significant parameters, the scaling concerning the asymptotic effects of long-range correlation, and the quantity establishing the amount of uncorrelated fluctuations. We find a correlation between the position in the phase space of patients with congestive heart failure and their mortality risk.
- Received 23 July 2002
DOI:https://doi.org/10.1103/PhysRevE.67.062901
©2003 American Physical Society