Long- and short-time analysis of heartbeat sequences: Correlation with mortality risk in congestive heart failure patients

P. Allegrini, R. Balocchi, S. Chillemi, P. Grigolini, P. Hamilton, R. Maestri, L. Palatella, and G. Raffaelli
Phys. Rev. E 67, 062901 – Published 23 June 2003
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Abstract

We analyze RR 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 δ concerning the asymptotic effects of long-range correlation, and the quantity 1π establishing the amount of uncorrelated fluctuations. We find a correlation between the position in the phase space (δ,π) 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

Authors & Affiliations

P. Allegrini1, R. Balocchi2, S. Chillemi3, P. Grigolini3,4,5, P. Hamilton6, R. Maestri7, L. Palatella5, and G. Raffaelli8

  • 1Istituto di Linguistica Computazionale del Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa–S. Cataldo, Via Moruzzi 1, 56124, Ghezzano-Pisa, Italy
  • 2Istituto di Fisiologia Clinica del Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa–S. Cataldo, Via Moruzzi 1, 56124, Ghezzano-Pisa, Italy
  • 3Istituto di Biofisica del Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa–S. Cataldo, Via Moruzzi 1, 56124, Ghezzano-Pisa, Italy
  • 4Center for Nonlinear Science, University of North Texas, P.O. Box 311427, Denton, Texas, 76203-1427, USA
  • 5Dipartimento di Fisica dell’Università di Pisa and INFM, Via Buonarroti 2, 56127 Pisa, Italy
  • 6Center for Nonlinear Science, Texas Woman’s University, P.O. Box 425498, Denton, Texas 76204, USA
  • 7Fondazione S. Maugeri, IRCCS, Istituto Scientifico di Montescano, Via per Montescano, 27040 Montescano (PV), Italy
  • 8International School for Advanced Studies and INFM Unit, Via Beirut 2-4, 34014 Trieste, Italy

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Vol. 67, Iss. 6 — June 2003

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