Comparison of noninvasive pulse transit time determined from Doppler aortic flow and multichannel bioimpedance plethysmography

0508217 - ÚPT 2020 RIV GB eng J - Journal Article
Soukup, L. - Hruskova, J. - Jurák, Pavel - Halámek, Josef - Závodná, E. - Viščor, Ivo - Matějková, M. - Vondra, Vlastimil
Comparison of noninvasive pulse transit time determined from Doppler aortic flow and multichannel bioimpedance plethysmography.
Medical & Biological Engineering & Computing. Roč. 57, č. 5 (2019), s. 1151-1158. ISSN 0140-0118. E-ISSN 1741-0444
Institutional support: RVO:68081731
Keywords : bioimpedance * doppler ultrasound * pulse wave velocity (PWV) * pulse transit time (PTT)
OECD category: Medical engineering
Impact factor: 2.022, year: 2019
Method of publishing: Limited access
https://link.springer.com/article/10.1007%2Fs11517-018-01948-x

The main goal of this study was to make a comparison of aortic flow timing obtained by PW Doppler in four aortic sections with timing of dZ/dt max obtained by bioimpedance measurement in nine locations on the thorax and neck. This knowledge is essential for determination of which bioimpedance channel could be used as a proximal for evaluation of pulse wave velocity (PWV) from the beginning of the ascending aorta or another aortic section. Time intervals between the Doppler flow and bioimpedance information (- dZ/dt max) were compared. It was found that the channel located on the left part of the neck is the most suitable as a proximal bioimpedance channel which corresponds to the aortic arch. This match is obtained with regard to the value of the time difference as well as inter-subject stability. This channel can be used as a proximal for evaluation of pulse wave velocity from the aortic arch to the desired distal target place in the body when distance between measured parts is known. The data from 35 volunteers with adequate signal quality were analyzed.
Permanent Link: http://hdl.handle.net/11104/0299190