Evaluation of volumetric parameters of the ventricular assist device using bioimpedance method

• Autorzy: Sobotnicki A. , Pałko T. , Mocha J. , Czerw M.
• Języki publikacji: EN

Abstrakty

EN

Volumetric parameters of operation of the pulsatile ventricular assist device (VAD) are the key clinical indicators for the evaluation of adequacy of the process of mechanical heart assistance and ensuring the patient's safety. The bioimpedance method has been proposed to evaluate blood volume changes of the VAD. The method is based on volume electric conductivity of the blood. A change in VAD volume involves changes in impedance. Periodic changes in VAD volume during its operation result in a pulsatile impedance wave; its amplitude in the subperiod of filling and ejection correlates with the volume of blood in the VAD. The paper presents the way of acquisition of the bioimpedance signal. It also presents the results of experimental studies, that were carried out with the use of the flow test stand, and an approach to analysing the bioimpedance signal to evaluate the stroke volume.

Słowa kluczowe

EN

artificial heart; ventricular assist device (VAD); stroke volume estimation; bioimpedance method

PL

sztuczne serce; urządzenia wspomagające pracę komór; metoda bioimpedancji

• Wydawca: University of Silesia, Institute of Informatics, Computer Systems Department
• Czasopismo: Journal of Medical Informatics & Technologies
• Rocznik: 2012
• Tom: Vol. 19
• Strony: 117--123
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Sobotnicki A.

• Institute of Medical Technology and Equipment ITAM, 118, Roosevelt Str., 41-800 Zabrze, Poland.

autor

Pałko T.

autor

Mocha J.

autor

Czerw M.

Bibliografia

• [1] PACHOLEWICZ J., KUCEWICZ E., ZAKLICZYŃSKI M., NIKLEWSKI T., KUBACKI K., KUSTOSZ R., ZEMBALA M. ,Heart regeneration due to long-term mechanical circulatory support with the POLVAD pump – case report. Polish Journal of Cardio-Thoracic Surgery, 2008 (in Polish), 5 (3), pp. 308-313.
• [2] PUSTELNY T., KUSTOSZ R., GAWLIKOWSKI M., The methods of physical parameters measurement regarding the heart supporting automation. The European Physical Journal, 2008, Special Topics 154, pp.71-76.
• [3] OPILSKI Z., KONIECZNY G., PUSTELNY T., GACEK A., KUSTOSZ R., GAWLIKOWSKI M., Noninvasive acoustic blood volume measurement system for the POLVAD prosthesis. Bulletin of Polish Academy of Sciences Technical Sciences, 2011, Vol. 59, No. 4, pp. 429-433.
• [4] CYBULSKI, G., Ambulatory impedance cardiography. The Systems and their Applications, Lecture Notes in Electrical Engineering, 2011, Vol 76, Springer, ISBN: 978-3-642-11986-6.
• [5] SODOLSKI T., KUTARSKI A., Impedance cardiography: A valuable method of evaluating haemodynamic parameters. Cardiology Journal, 2007, Vol. 14, No. 2, pp. 115-126.
• [6] PETHIG, R., DOUGLAS B., The passive electrical properties of biological systems: their significance in physiology, biophysics and biotechnology. Physics in Medicine and Biology, 1987, Vol.32, pp. 933-970.
• [7] WTOREK, J., POLIŃSKI, A., The contribution of blood-flow-induced conductivity changes to measured impedance. IEEE Transactions on Biomedical Engineering. 2005, 52(1), pp. 41–49.
• [8] VISSER K.R., Electric conductivity of stationary and flowing human blood at low frequencies. Medical & Biological Engineering & Computing, 1992, Vol. 30, pp. 636–640.
• [9] FERRARI G., DE LAZZARI C., KOZARSKI M., DAROWSKI M., Hybrid (Numerical-Physical) Circulatory Models: Description and Possible Applications. Biomedical Robotics and Biomechatronics, 2006, pp. 249-253.