Symbolic dynamic analysis of relations between cardiac and breathing cycles in patients on weaning trials.
Symbolic dynamic analysis of relations between cardiac and breathing cycles in patients on weaning trials.
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DOI：
10.1007/s10439-010-0027-1
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发表时间：
2010-08
影响因子：
3.8
通讯作者：
Voss, A.
中科院分区：
文献类型：
--
作者：
Caminal, P.;Giraldo, B. F.;Vallverdu, M.;Benito, S.;Schroeder, R.;Voss, A.
关键词：
传统的时域数据分析技术往往不足以表征脱机试验期间心肺相互依赖性的复杂动力学。本文采用联合符号动力学分析方法研究了心率（HR）和呼吸率（BR）之间的相互作用。共分析了133例接受机械通气脱机试验的患者：94例成功脱机（S组）和39例未能维持自主呼吸（F组）。单词分布矩阵能够对心肺相互作用的短期非线性分析进行粗粒度定量评估。心肺单词的出现概率的直方图在组F中呈现出比在组S中更高的均匀性，这是用组S中更高数量的禁止单词以及组S中出现概率高于概率阈值的更高数量的单词来测量的。判别分析显示，最好的结果时，应用符号动态变量。因此，我们假设，联合符号动态分析提供了增强的信息，不同的相互作用之间的HR和BR，当比较成功的撤机患者和患者，未能保持自主呼吸的撤机程序。
Traditional time-domain techniques of data analysis are often not sufficient to characterize the complex dynamics of the cardiorespiratory interdependencies during the weaning trials. In this paper, the interactions between the heart rate (HR) and the breathing rate (BR) were studied using joint symbolic dynamic analysis. A total of 133 patients on weaning trials from mechanical ventilation were analyzed: 94 patients with successful weaning (group S) and 39 patients that failed to maintain spontaneous breathing (group F). The word distribution matrix enabled a coarse-grained quantitative assessment of short-term nonlinear analysis of the cardiorespiratory interactions. The histogram of the occurrence probability of the cardiorespiratory words presented a higher homogeneity in group F than in group S, measured with a higher number of forbidden words in group S as well as a higher number of words whose probability of occurrence is higher than a probability threshold in group S. The discriminant analysis revealed the best results when applying symbolic dynamic variables. Therefore, we hypothesize that joint symbolic dynamic analysis provides enhanced information about different interactions between HR and BR, when comparing patients with successful weaning and patients that failed to maintain spontaneous breathing in the weaning procedure.
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影响因子：
4.6
作者：
Caminal, P;Vallverdú, M;Voss, A
通讯作者：
Voss, A
影响因子：
2.9
作者：
Penzel, Thomas;Wessel, Niels;Fietze, Ingo
通讯作者：
Fietze, Ingo
影响因子：
7.7
作者：
El-Khatib, Mohamad F.
通讯作者：
El-Khatib, Mohamad F.
DOI：
10.1152/ajpheart.00006.2007
发表时间：
2007-07-01
影响因子：
4.8
作者：
Porta, Alberto;Tobaldini, Eleonora;Gnecchi-Ruscone, Tomaso
通讯作者：
Gnecchi-Ruscone, Tomaso
影响因子：
3.2
作者：
Baumert, M;Walther, T;Voss, A
通讯作者：
Voss, A