Point-process high-resolution representations of heartbeat dynamics for multiscale analysis: A CHF survivor prediction study

Multiscale analysis of human heartbeat dynamics has been proved effective in characterizeing cardiovascular control physiology in health and disease. However, estimation of multiscale properties can be affected by the interpolation procedure used to preprocess the unevenly sampled R-R intervals deri...

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Veröffentlicht in:2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) Jg. 2015; S. 1951 - 1954
Hauptverfasser: Valenza, G., Wendt, H., Kiyono, K., Hayano, J., Watanabe, E., Yamamoto, Y., Abry, P., Barbieri, R.
Format: Tagungsbericht Journal Article
Sprache:Englisch
Veröffentlicht: United States IEEE 01.08.2015
Schlagworte:
Electrocardiography
Fractals
Heart Failure - diagnosis
Heart Failure - mortality
Heart Failure - physiopathology
Heart Rate - physiology
Heart rate variability
Humans
Interpolation
Myocardial Contraction
Rail to rail inputs
Risk Assessment
Signal Processing, Computer-Assisted
Splines (mathematics)
Survivors
Time series analysis
Wavelet Analysis
ISSN:1094-687X, 1557-170X, 2694-0604
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Zusammenfassung:Multiscale analysis of human heartbeat dynamics has been proved effective in characterizeing cardiovascular control physiology in health and disease. However, estimation of multiscale properties can be affected by the interpolation procedure used to preprocess the unevenly sampled R-R intervals derived from the ECG. To this extent, in this study we propose the estimation of wavelet coefficients and wavelet leaders on the output of inhomogeneous point process models of heartbeat dynamics. The RR interval series is modeled using probability density functions (pdfs) characterizing and predicting the time until the next heartbeat event occurs, as a linear function of the past history. Multiscale analysis is then applied to the pdfs' instantaneous first order moment. The proposed approach is tested on experimental data gathered from 57 congestive heart failure (CHF) patients by evaluating the recognition accuracy in predicting survivor and non-survivor patients, and by comparing performances from the informative point-process based interpolation and non-informative spline-based interpolation. Results demonstrate that multiscale analysis of point-process high-resolution representations achieves the highest prediction accuracy of 65.45%, proving our method as a promising tool to assess risk prediction in CHF patients.
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ISSN:1094-687X
1557-170X
2694-0604
DOI:10.1109/EMBC.2015.7318766