M.A. Yangirov1, D.A. Kolesnikov2, M.B. Al-Harosh3

1–3 Bauman Moscow State Technical University (Moscow, Russia)

Real-time measurement of arterial diameter provides a stable estimate of approximate values for predicting the state of cardiovascular disease, including absolute values of blood pressure, its rate of change and variability.

Development of a device for continuous monitoring of indirect parameters of blood pressure using the electrical impedance method, which includes a local assessment of pulse wave velocity, diameter and stiffness index of artery. To this end, the measurement of electrical impedance is carried out using the developed flexible multichannel electrode system. And the parameters of the electrode system are chosen to ensure high measurement accuracy based on the data of analytical model. At the same time, there is an initial calibration of the device, which provides the calculation of the arterial stiffness index.

A mathematical model has been developed that makes it possible, on the basis of a priori data on a biological object, to choose the optimal parameters of electrode systems. An algorithm is proposed for estimating the contribution of erythrocyte orientation effects to the change in impedance. The measured electrical impedance signal obtained from the projection area of the artery provided continuous monitoring of blood pressure with an accuracy of 0.2 mm Hg. relative to control values

The development of an electrical impedance device for blood pressure monitoring will make it possible to more accurately predict the patient's condition compared to existing non-invasive methods for measuring blood pressure.

Yangirov M.A., Kolesnikov D.A., Al-Harosh M.B. Wearable device for arterial pressure monitoring. Biomedicine Radioengineering. 2022. V. 25. № 5. Р. 6-19. DOI: https://doi.org/10.18127/j15604136-202205-02 (In Russian)

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