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

  • Ladislav SoukupEmail author
  • Jana Hruskova
  • Pavel Jurak
  • Josef Halamek
  • Eva Zavodna
  • Ivo Viscor
  • Magdalena Matejkova
  • Vlastimil Vondra
Original Article
  • 31 Downloads

Abstract

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.

Graphical abstract

Keywords

Bioimpedance Doppler ultrasound Pulse wave velocity (PWV) Pulse transit time (PTT) 

Notes

Funding information

This study was supported by project no. LQ1605 from National Program of Sustainability II (MEYS CR) and MUNI/A/1157/2017.

Compliance with ethical standards

The study was approved by the ethics committee at St. Anne’s University Hospital Brno. Informed consent was obtained from all individual participants included in the study.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© International Federation for Medical and Biological Engineering 2019

Authors and Affiliations

  1. 1.International Clinical Research CenterSt. Anne’s University Hospital BrnoBrnoCzech Republic
  2. 2.Department of Physiology, Faculty of MedicineMasaryk UniversityBrnoCzech Republic
  3. 3.Institute of Scientific Instruments of the CAS, v.v.iBrnoCzech Republic
  4. 4.Department of Physiology and Pathophysiology, Faculty of MedicineUniversity of OstravaOstravaCzech Republic
  5. 5.Department of Psychology, Faculty of ArtsMasaryk UniversityBrnoCzech Republic

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