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The work is devoted to study the possibilities of automatic classification of patient groups using magnetocardiography (MCG) in the diagnosis of lesions of the atria. Analyzed magnetocardiographic data for the three groups of patients. The first group included 31 ΜCG record healthy volunteers. The second group - 45 MCG records of patients with chronic obstructive pulmonary disease (COPD). The third group - 58 ΜG records of patients with coronary heart disease (CHD). Statistical analysis showed that the decision rule for classification of patients with COPD and IHD can have four information parameter: 1 - the rate of variation of the magnetic field (RVMF), which characterizes the percentage of exceeding a given level of magnetic field in the whole time interval (104 msec), points on the plane dimensions of each magnetic card. 2 - parameter inversion (PI), which is defined on the interval 2-40 msec. 3 - parameter changes integrated map currents (ICT) characterizing changes in the structure (the values of vectors; directions of vectors; spatial distribution within the boundaries of the field measurements) distribution maps of vector current density during msec (on P wave in this case). 4 - parameter integral of the minimum magnetic field (PIMF).

In this study, the analysis of magnetocardiographic (MCG) data for the three groups of patients is given. The first group included 31 healthy volunteers, who had no “history” of a heart disease. The second group included MCG record of 51 patients with chronic obstructive pulmonary disease (COPD). The third group consisted of 31 MCG records for patients with paroxysmal atrial fibrillation (AF). Founded advantages of MCG to potential method provide registration and mapping features of electrophysiological processes in the heart, when the change takes place at the MCG and often absent on ECG.

Paper is devoted to the study of MCG in the diagnosis of lesions of the Atria. Studied indicators in the group of healthy individuals ( n = 19) using functional tests (Shtange, Valsalva and tensor), the 2 nd group of patients ( n = 55) - with chronic obstructive pulmonary disease (COPD) at the age of 54 ± 8 yrs (32 of them with berodual or symbicort test) and the 3 rd group - with ACA on the background of coronary artery disease and hypertension at the age of 58 ± 6 yrs ( n = 30) time Analysis of intra- and interatrial conduction with ACA and COPD showed similar violations of MCG in these groups, which can be induction and maintenance factors of atrial fibrillation. MCG method can be used to assess the electrophysiological status of the myocardium of the Atria.