Elucidating the Hemodynamic Origin of Ballistocardiographic Forces: Toward Improved Monitoring of Cardiovascular Health at Home
| Autor: | Omer T. Inan, Hazar Ashouri, Srini Tridandapani, Abdul Q. Javaid |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Cardiac output lcsh:Medical technology 0206 medical engineering Biomedical Engineering Hemodynamics 02 engineering and technology 030204 cardiovascular system & hematology hemodynamics lcsh:Computer applications to medicine. Medical informatics Signal Article 03 medical and health sciences 0302 clinical medicine Ballistocardiogram Internal medicine home monitoring Medicine Intensive care medicine medicine.diagnostic_test business.industry cardiovascular health General Medicine Stroke volume Blood flow 020601 biomedical engineering 3. Good health Pulse pressure Impedance cardiography Blood pressure lcsh:R855-855.5 Cardiology lcsh:R858-859.7 business |
| Zdroj: | IEEE Journal of Translational Engineering in Health and Medicine, Vol 4, Pp 1-8 (2016) IEEE Journal of Translational Engineering in Health and Medicine |
| ISSN: | 2168-2372 |
| Popis: | The ballistocardiogram (BCG), a signal describing the reaction forces of the body to cardiac ejection of blood, has recently gained interest in the research community as a potential tool for monitoring the mechanical aspects of cardiovascular health for patients at home and during normal activities of daily living. An important limitation in the field of BCG research is that while the BCG signal measures the forces of the body, the information desired (and understood) by clinicians and caregivers, regarding mechanical health of the cardiovascular system, is typically expressed as blood pressure or flow. This paper aims to explore, using system identification tools, the mathematical relationship between the BCG signal and the better-understood impedance cardiography (ICG) and arterial blood pressure (ABP) waveforms, with a series of human subject studies designed to asynchronously modulate cardiac output and blood pressure and with different magnitudes. With this approach, we demonstrate for 19 healthy subjects that the BCG waveform more closely maps to the ICG (flow) waveform as compared with the finger-cuff-based ABP (pressure) waveform, and that the BCG can provide a more accurate estimate of stroke volume (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$r=0.73$ \end{document}, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$p < 0.05$ \end{document}) as compared with pulse pressure changes (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$r = 0.26$ \end{document}). We also examined, as a feasibility study, for one subject, the ability to calibrate the BCG measurement tool with an ICG measurement on the first day, and then track changes in stroke volume on subsequent days. Accordingly, we conclude that the BCG is a signal more closely related to blood flow than pressures, and that a key health parameter for titrating care—stroke volume—can potentially be accurately measured with BCG signals at home using unobtrusive and inexpensive hardware, such as a modified weighing scale, as compared with the state-of-the-art ICG and ABP devices, which are expensive and obtrusive for use at home. GA Legend KM |
| Databáze: | OpenAIRE |
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