Kharkiv Medical Academy of Postgraduate Education, Kharkiv, Ukraine. OPPORTUNITY AND PLANNING BIM-ANALYSIS FOR MONITORING BLOOD

Results of the study of the possibility of using the results of the bioimpedanceometry method for monitoring hidden and spontaneous bleeding are presented. The current problem of accounting for blood loss during resuscitation, surgery and rehabilitation activities is shown. The use, as informative parameters, of the spectral properties of the bioimpedance signal, namely, the coefficient of inter-spectral correlation of the original measurement signal and its linear transformation is proposed. In work, the existing models substantiating the prospects of using the bioimpedance method for such problems are considered in detail, and the calculated empirical expressions for determining the volume of liquid segments of the human body are given. The mathematical substantiation of the method of inter-spectral correlation based on the calculation of the correlation coefficients of the wavelet-decomposition coefficients of the original signal and its linear transformation is given. The results of experimental studies on the approbation of this method for fixed venous blood sampling are presented in the work. Using criterial T-statistics, a quantitative evaluation of the effectiveness of the options for choosing the spatial placement of measuring electrodes in bioimpedanceometry was carried out. The obtained results allow to draw a conclusion about the possibility and prospects of the proposed method for real-time monitoring of the onset of latent and spontaneous hemorrhages, and also make it possible to formulate recommendations for placement of measuring electrodes on the patient's body.

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