Multi-Channel Impedance Technology for Mapping and Monitoring of Cardioactivity

Prototype models of an electrode system and a new multi-channel non-invasive impedance measuring system were designed and experimentally studied. The 32-channel rheographic system developed allows registration of the electrocardiogram (ECG) and the transthoracic rheogram (TTRG) simultaneousely with up to thirty precordial rheocardiograms (PRCG). The results of the conducted research and the tests of the prototype of the functioning device demonstrated that a method of the impedance precordial mapping, the proposed multi-channel system and technology are highly perspective for solving the following tasks of medical diagnostics: localization of the heart, its chambers, and the main vessels in the thoracic cavity; evaluation of the sizes of main structural components of the heart; determination of valve pathologies; estimation of the phases of the heart cycle; analysis of dynamics, synchronism, and a sequence of contractions of the atria and ventricles; monitoring of the heart pump-function parameters; analysis of the cardio-respiratory relationship.