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The central aortic pressure (CAP) is traditionally measured using a pressure sensor inserted into aorta. This invasive procedure is costly and can lead to complications. Therefore, attention is paid to the development of non-invasive methods. Tonometry sensors are mostly used for getting the primary pressure information non-invasively from the radial artery. Authors of the paper introduced a method...
Non-invasive and safe method for estimation of the Central Aortic Pressure (CAP) waveform is presented. It is based on the measurement of Electrical Bio-Impedance (EBI) on radial artery. Reconstruction of the CAP curve from the EBI data is provided by an introduced spectral domain transfer function (TF). The TF estimation algorithm and the Augmentation Index (AI) evaluation method are described. Proposed...
The paper presents a novel algorithm for the central Augmentation Index (AI) estimation and it is robust and suitable for long-term monitoring. To increase the robustness of the proposed method, only first and second order derivatives of the Central Aortic Pressure (CAP) pulse are used. Low-order Legendre polynomials approximation was applied for some intervals of the CAP waveform to find locations...
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