Non-invasive stroke volume estimation by transthoracic electrical bioimpedance versus Doppler echocardiography in healthy volunteers.

Autor: Harford M; a Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.; b Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK., Clark SH; c Critical Care Department , University College London Hospitals NHS Foundation Trust , London , UK., Smythe JF; d Adult Intensive Care Unit , John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust , Oxford , UK., Gerry S; e Centre for Statistics in Medicine , University of Oxford , Oxford , UK., Villarroel M; b Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK., Jorge J; b Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK., Chaichulee S; b Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK., Tarassenko L; b Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford , UK., Young D; a Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK., Watkinson P; a Critical Care Research Group, Nuffield Department of Clinical Neurosciences , University of Oxford , Oxford , UK.
Jazyk: angličtina
Zdroj: Journal of medical engineering & technology [J Med Eng Technol] 2019 Jan; Vol. 43 (1), pp. 33-37. Date of Electronic Publication: 2019 Apr 15.
DOI: 10.1080/03091902.2019.1599074
Abstrakt: Thoracic electrical bioimpedance (TEB) and transthoracic echocardiography (TTE) are non-invasive methods to estimate stroke volume (SV) and cardiac output (CO). Thoracic electrical bioimpedance is not in widespread clinical use with reports of inaccurate cardiac output estimation compared to invasive monitors, particularly in non-healthy populations. We explore its use as a trend monitor by comparing it against thoracic echocardiography in fifteen healthy volunteers undergoing two physical challenges designed to vary cardiac output. Of all paired values, 54.6% showed gross trend agreement and only 1.9% showed direct disagreement between the two monitors. Our results show thoracic bioimpedance may have a role as a non-invasive cardiac output trend monitor in healthy volunteer studies.
Databáze: MEDLINE
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