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A minimally invasive method for beat-by-beat estimation of cardiac pressure-volume loops
Davidson, S.; Pretty, C.; Kamoi, S. et al.
2017In Maciel, C.D.; Gamboa, H.; Vaz M., Fred A. (Eds.) BIOSIGNALS 2017 - 10th International Conference on Bio-Inspired Systems and Signal Processing, Proceedings; Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
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Keywords :
Cardiovascular Signals; Clinical Monitoring; Pressure-Volume Loops; Stroke Work; Biomedical engineering; Decision making; Echocardiography; Signal processing; Clinical decision making; Clinical environments; End-systolic volumes; Pressure volumes; Reasonable accuracy; Blood pressure
Abstract :
[en] This paper develops a minimally invasive means of estimating a patient-specific cardiac pressure-volume loop beat-to-beat. This method involves estimating the left ventricular pressure and volume waveforms using clinically available information including heart rate and aortic pressure, supported by a baseline echocardiography reading. Validation of the method was performed across an experimental data set spanning 5 Piétrain pigs, 46,318 heartbeats and a diverse clinical protocol. The method was able to accurately locate a pressure-volume loop, identifying the end-diastolic volume, end-systolic volume, mean-diastolic pressure and mean-systolic pressure of the ventricle with reasonable accuracy. While there were larger percentage errors associated with stroke work derived from the estimated pressure-volume loops, there was a strong correlation (average R value of 0.83) between the estimated and measured stroke work values. These results provide support for the potential of the method to track patient condition, in real-time, in a clinical environment. This method has the potential to yield additional information from readily available waveforms to aid in clinical decision making. Copyright © 2017 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved.
Disciplines :
Anesthesia & intensive care
Author, co-author :
Davidson, S.;  Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
Pretty, C.;  Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
Kamoi, S.;  Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
Desaive, Thomas  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Chase, J. G.;  Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
Maciel, C. D.
Gamboa, H.
Vaz, M.
Fred, A.
Language :
English
Title :
A minimally invasive method for beat-by-beat estimation of cardiac pressure-volume loops
Publication date :
2017
Event name :
10th International Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2017 - Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
Event date :
21 February 2017 through 23 February 2017
Audience :
International
Main work title :
BIOSIGNALS 2017 - 10th International Conference on Bio-Inspired Systems and Signal Processing, Proceedings; Part of 10th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2017
Editor :
Maciel, C.D.
Gamboa, H.
Vaz M., Fred A.
Publisher :
SciTePress
ISBN/EAN :
978-989758212-7
Pages :
54-63
Peer reviewed :
Peer reviewed
Funders :
INSTICC - Institute for Systems and Technologies of Information, Control and Communication
Commentary :
134847 9789897582127
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since 08 June 2020

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