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dc.contributor.authorCaminal Magrans, Pere
dc.contributor.authorGiraldo Giraldo, Beatriz
dc.contributor.authorVallverdú Ferrer, Montserrat
dc.contributor.authorBenito Vales, Salvador
dc.contributor.authorSchroeder, Rico
dc.contributor.authorVoss, Andreas
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.contributor.otherInstitut de Bioenginyeria de Catalunya
dc.identifier.citationCaminal, P. [et al.]. Symbolic dynamic analysis of relations between cardiac and breathing cycles in patients on weaning trials. "Annals of biomedical engineering", 2010.
dc.description.abstractTraditional 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.
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
dc.subject.lcshCardiovascular system--Mathematical models
dc.subject.lcshArtificial respiration
dc.titleSymbolic dynamic analysis of relations between cardiac and breathing cycles in patients on weaning trials
dc.subject.lemacSistema cardiovascular -- Models matemàtics
dc.subject.lemacRespiració artificial
dc.contributor.groupUniversitat Politècnica de Catalunya. B2SLab - Bioinformatics and Biomedical Signals Laboratory
dc.contributor.groupUniversitat Politècnica de Catalunya. SISBIO - Senyals i Sistemes Biomèdics
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorCaminal, P.; Giraldo, B.; Vallverdu, M.; Benito, S.; Schroeder, R.; Voss, A.
local.citation.publicationNameAnnals of biomedical engineering

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