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Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings

INTRODUCTION: Functional time-varying cardiac elastances (FTVE) contain a rich amount of information about the specific cardiac state of a patient. However, a FTVE waveform is very invasive to directly measure, and is thus currently not used in clinical practice. This paper presents a method for the...

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Autores principales: Stevenson, David, Revie, James, Chase, J Geoffrey, Hann, Christopher E, Shaw, Geoffrey M, Lambermont, Bernard, Ghuysen, Alexandre, Kolh, Philippe, Desaive, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3538613/
https://www.ncbi.nlm.nih.gov/pubmed/22998792
http://dx.doi.org/10.1186/1475-925X-11-73
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author Stevenson, David
Revie, James
Chase, J Geoffrey
Hann, Christopher E
Shaw, Geoffrey M
Lambermont, Bernard
Ghuysen, Alexandre
Kolh, Philippe
Desaive, Thomas
author_facet Stevenson, David
Revie, James
Chase, J Geoffrey
Hann, Christopher E
Shaw, Geoffrey M
Lambermont, Bernard
Ghuysen, Alexandre
Kolh, Philippe
Desaive, Thomas
author_sort Stevenson, David
collection PubMed
description INTRODUCTION: Functional time-varying cardiac elastances (FTVE) contain a rich amount of information about the specific cardiac state of a patient. However, a FTVE waveform is very invasive to directly measure, and is thus currently not used in clinical practice. This paper presents a method for the estimation of a patient specific FTVE, using only metrics that are currently available in a clinical setting. METHOD: Correlations are defined between invasively measured FTVE waveforms and the aortic and pulmonary artery pressures from 2 cohorts of porcine subjects, 1 induced with pulmonary embolism, the other with septic shock. These correlations are then used to estimate the FTVE waveform based on the individual aortic and pulmonary artery pressure waveforms, using the “other” dysfunction’s correlations as a cross validation. RESULTS: The cross validation resulted in 1.26% and 2.51% median errors for the left and right FTVE respectively on pulmonary embolism, while the septic shock cohort had 2.54% and 2.90% median errors. CONCLUSIONS: The presented method accurately and reliably estimated a patient specific FTVE, with no added risk to the patient. The cross validation shows that the method is not dependent on dysfunction and thus has the potential for generalisation beyond pulmonary embolism and septic shock.
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spelling pubmed-35386132013-01-10 Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings Stevenson, David Revie, James Chase, J Geoffrey Hann, Christopher E Shaw, Geoffrey M Lambermont, Bernard Ghuysen, Alexandre Kolh, Philippe Desaive, Thomas Biomed Eng Online Research INTRODUCTION: Functional time-varying cardiac elastances (FTVE) contain a rich amount of information about the specific cardiac state of a patient. However, a FTVE waveform is very invasive to directly measure, and is thus currently not used in clinical practice. This paper presents a method for the estimation of a patient specific FTVE, using only metrics that are currently available in a clinical setting. METHOD: Correlations are defined between invasively measured FTVE waveforms and the aortic and pulmonary artery pressures from 2 cohorts of porcine subjects, 1 induced with pulmonary embolism, the other with septic shock. These correlations are then used to estimate the FTVE waveform based on the individual aortic and pulmonary artery pressure waveforms, using the “other” dysfunction’s correlations as a cross validation. RESULTS: The cross validation resulted in 1.26% and 2.51% median errors for the left and right FTVE respectively on pulmonary embolism, while the septic shock cohort had 2.54% and 2.90% median errors. CONCLUSIONS: The presented method accurately and reliably estimated a patient specific FTVE, with no added risk to the patient. The cross validation shows that the method is not dependent on dysfunction and thus has the potential for generalisation beyond pulmonary embolism and septic shock. BioMed Central 2012-09-21 /pmc/articles/PMC3538613/ /pubmed/22998792 http://dx.doi.org/10.1186/1475-925X-11-73 Text en Copyright ©2012 Stevenson et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Stevenson, David
Revie, James
Chase, J Geoffrey
Hann, Christopher E
Shaw, Geoffrey M
Lambermont, Bernard
Ghuysen, Alexandre
Kolh, Philippe
Desaive, Thomas
Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title_full Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title_fullStr Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title_full_unstemmed Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title_short Beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
title_sort beat-to-beat estimation of the continuous left and right cardiac elastance from metrics commonly available in clinical settings
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3538613/
https://www.ncbi.nlm.nih.gov/pubmed/22998792
http://dx.doi.org/10.1186/1475-925X-11-73
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