Long- and short-time analysis of heartbeat sequences: Correlation with mortality risk in congestive heart failure patients
Long- and short-time analysis of heartbeat sequences: Correlation with mortality risk in congestive heart failure patients
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DOI：
10.1103/physreve.67.062901
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发表时间：
2003-06-01
影响因子：
2.4
通讯作者：
Raffaelli, G
中科院分区：
文献类型：
--
作者：
Allegrini, P;Balocchi, R;Raffaelli, G
我们分析RR心跳序列的动态模型，令人满意地再现长期和短期的统计特性的心脏跳动。这些属性表示定量的两个重要的参数，缩放三角洲有关的渐近效应的远程相关性，和数量1-π建立量的不相关的波动。我们发现充血性心力衰竭患者的相空间位置（δ，pi）与其死亡风险之间存在相关性。
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 delta concerning the asymptotic effects of long-range correlation, and the quantity 1-pi establishing the amount of uncorrelated fluctuations. We find a correlation between the position in the phase space (delta,pi) of patients with congestive heart failure and their mortality risk.