Pulse wave velocity measured by Multichannel whole body impedance plethysmograph

0452209 - ÚPT 2016 CZ eng A - Abstract
Viščor, Ivo - Jurák, Pavel - Plešinger, Filip - Vondra, Vlastimil - Halámek, Josef - Soukup, L. - Matějková, M.
Pulse wave velocity measured by Multichannel whole body impedance plethysmograph.
SMIT 2015. 27th International Conference of the Society for Medical Innovation and Technology. Abstract Book. Brno: Society for Medical Innovation and Technology, 2015. s. 70.
[SMIT 2015. International Conference of the Society for Medical Innovation and Technology/27./. 10.09.2015-12.09.2015, Brno]
Institutional support: RVO:68081731
Keywords : electrical impedance * plethysmograph * pulse wave velocity * arterial stiffness
Subject RIV: BH - Optics, Masers, Lasers

The simultaneous measurement of the electrical impedance at many segments of the human body allows for monitoring of hemodynamic properties of the vascular system. We present innovative measuring technology that acquires high quality impedance signals and evaluates pulse wave velocity. 18-channel pulse wave monitor (MPM) generates three currents of 1 mA at frequencies of 49, 50 and 51 kHz. Voltage drops are amplified by low noise amplifiers sensing 18 segments of the body. Signals are acquired by high dynamic range, low power analog-to-digital converters and processed in FPGA Xilinx (quadrature detectors, decimators). Processed impedance signals are sent to evaluating workplace by an optical cable. Besides the impedance signals, MPM acquires 3 lead wire ECG and phonocardiographic sound signal. PulseWave software evaluates PWV in real-time and generates final PWV protocol. The MPM device offers measurement of the pulse wave and impedance magnitude at 18 body segments simultaneously. This makes possible to study arterial system stiffness and blood volume distribution in the human body during various excitations.
Permanent Link: http://hdl.handle.net/11104/0253242