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dc.contributor.authorRuiz de Gauna Gutiérrez, Sofía ORCID
dc.contributor.authorGutiérrez Ruiz, José Julio ORCID
dc.contributor.authorSandoval, Camilo Leonardo
dc.contributor.authorRussell, James Knox
dc.contributor.authorAzcarate Blanco, Izaskun
dc.contributor.authorUrigüen Garaizabal, José Antonio
dc.contributor.authorGonzález Otero, Digna María
dc.contributor.authorDaya, Mohamud Ramzan
dc.date.accessioned2024-05-02T16:30:58Z
dc.date.available2024-05-02T16:30:58Z
dc.date.issued2023-12
dc.identifier.citationComputer Methods and Programs in Biomedicine 242 : (2023) // Article ID 107847es_ES
dc.identifier.issn1872-7565
dc.identifier.issn0169-2607
dc.identifier.urihttp://hdl.handle.net/10810/67163
dc.description.abstractAim The purpose of this study was to develop a simple viscoelastic model to characterize the mechanical properties of chests during manual chest compressions in pre-hospital cardiopulmonary resuscitation (CPR). Methods Force and acceleration signals were extracted from CPR monitors used during pre-hospital resuscitation attempts on adult patients. Individual chest compressions were identified and segmented from the chest displacement computed using the force and acceleration. Each compression-recoil cycle was characterized by its elastic coefficient k (a measure of stiffness) and its compression and recoil damping coefficients, and , respectively (measures of viscosity). We compared the estimated and the calculated chest displacement to assess the goodness of fit of the model. We characterized the chest of patients at the beginning of CPR in relation to sex and age, and their variation as CPR progressed. Results A total of 1,156,608 chest compressions from 615 patients were analysed. Mean (95% CI) coefficient of determination R2 for the viscoelastic model was 97.9% (97.8–98.1). At the beginning of CPR, k was 104.9 N⋅cm-1 (102.0–107.8), was 2.868 N⋅s⋅cm-1 (2.751–2.984) and was 4.889 N⋅s⋅cm-1 (4.648–5.129). Damping during recoil was significantly higher than during compression. Stiffness was lower in women than in men. There were no differences in damping coefficients with sex but a higher with increasing age. All model coefficients decreased with compression count, with an overall decrease after 3,000 chest compressions of 34.6%, 48.8% and 37.2%, respectively. Conclusion The model accurately described adult chest mechanical properties during CPR, highlighting differences between compression and recoil, sex and age, and a progressive reduction in chest stiffness and viscosity along resuscitation. Our findings may merit further investigation into whether patient-tailored and time-sensitive chest compression technique may be appropriate.es_ES
dc.description.sponsorshipThis study was funded by the grant PID2021-126021OB-I00 by MCIN/AEI/10.13039/501100011033 and by ERDF A way of making Europe, and by the grant IT1590-22 by the Basque Government. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationinfo:eu-repo/grantAgreement/MICINN/PID2021-126021OB-I00es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectcardiopulmonary resuscitation (CPR)es_ES
dc.subjectmanual chest compressionses_ES
dc.subjectchest compression forcees_ES
dc.subjectchest compression depthes_ES
dc.subjectout-of-hospital cardiac arrest (OHCA)es_ES
dc.titleCharacterization of mechanical properties of adult chests during pre-hospital manual chest compressions through a simple viscoelastic modeles_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/).es_ES
dc.rights.holderAtribución-NoComercial-SinDerivadas 3.0 España*
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0169260723005138es_ES
dc.identifier.doi10.1016/j.cmpb.2023.107847
dc.departamentoesIngeniería de comunicacioneses_ES
dc.departamentoesMatemática aplicadaes_ES
dc.departamentoeuKomunikazioen ingeniaritzaes_ES
dc.departamentoeuMatematika aplikatuaes_ES


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© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-
nc-nd/4.0/).
Except where otherwise noted, this item's license is described as © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/).