Title:
|
Symbolic dynamic analysis of relations between cardiac and breathing cycles in patients on weaning trials
|
Author:
|
Caminal Magrans, Pere; Giraldo Giraldo, Beatriz; Vallverdú Ferrer, Montserrat; Benito Vales, Salvador; Schroeder, Rico; Voss, Andreas
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Institut de Bioenginyeria de Catalunya; Universitat Politècnica de Catalunya. B2SLab - Bioinformatics and Biomedical Signals Laboratory; Universitat Politècnica de Catalunya. SISBIO - Senyals i Sistemes Biomèdics |
Abstract:
|
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. |
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica -Cardiovascular system--Mathematical models -Artificial respiration -Sistema cardiovascular -- Models matemàtics -Respiració artificial |
Rights:
|
|
Document type:
|
Article - Published version Article |
Share:
|
|