Determination of stroke volume of the ventricular assist device using bioimpedance method

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

Abstrakty

EN

The stroke volume of pulsatile ventricular assist device (VAD) is one of the key clinical indicators to evaluate the adequacy of the process of mechanical heart assistance and ensuring the patient’s safety. In order to evaluate the volume changes in VAD blood chamber, a bioimpedance method was applied, based on volumetric electric conductivity of the blood. Periodic changes in VAD volume during its operation result in a pulsatile impedance waveform; its amplitude in the subperiods of filling and ejection correlates with blood volume in the chamber. The paper presents the method of analysis of the bioimpedance signal recorded in VAD blood chamber with a reference to the classical method of analysing the cardioimpedance signal from the patient’s thorax. The paper also presents the results of determining stroke volume of blood chamber based on an empirical formula that has been developed.

Słowa kluczowe

EN

artificial heart; ventricular assist device; VAD; stroke volume; bioimpedance method; impedance cardiography; ICG

PL

sztuczne serce; urządzenie wspomagające pracę komór serca; VAD; metoda bioimpedancji; kardiografia impedancyjna; ICG

• Wydawca: University of Silesia, Institute of Informatics, Computer Systems Department
• Czasopismo: Journal of Medical Informatics & Technologies
• Rocznik: 2013
• Tom: Vol. 22
• Strony: 235--241
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Sobotnicki A.

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

autor

Gacek A.

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

autor

Pałko T.

• Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, 8, Boboli Str., Warsaw Poland

autor

Mocha J.

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

autor

Badura G.

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

autor

Czerw M.

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

Bibliografia

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• [6] SOBOTNICKI A., PAŁKO T., MOCHA J., CZERW M., Evaluation of volumetric parameters of the ventricular assist device using bioimpedance method. Journal of Medical Informatics and Technologies MIT, Computer Systems Dept. University of Silesia, 2012, Vol. 19, ISSN 1642-6037, pp. 117-123.
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