METHOD FOR PREDICTING RISK OF ATRIAL FIBRILLATION DEVELOPMENT IN THE ABSENCE OF STRUCTURAL AND VALVE HEART PATHOLOGY OF PERSONS WITH NORMAL LEFT ATRIUM SIZES Russian patent published in 2018 - IPC A61B5/02 A61B8/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to cardiology. Conduct echocardiography, determine the presence of valvular pathology, congenital heart disease and hypokinesis zones; the left ventricular ejection fraction (LV), the anterior-posterior dimension of the left atrium (LA) in the parasternal position along the long axis, the maximum end-diastolic volume of the LA according to the disk method according to Simpson are estimated. In the absence of valvular pathology, congenital heart disease and hypokinesis zones; normal fraction of LV ejection, anteroposterior size of LA not more than 5.0 cm, the maximum end-diastolic volume of LA according to the method of disks according to Simpson is not more than 100 ml: tissue Doppler study, determining the values of the indicators Vs lateral and Ve lateral; electrocardiography of high resolution, determining the values of FiP, RMS10 and D5. Based on the obtained data, the value of Y is calculated from the original equation. In the event that the obtained value of Y is more than 0, a high risk of developing atrial fibrillation (AF) is predicted, at Y less than 0 – low risk of AF development.

EFFECT: method allows to increase the accuracy of detection of AF risk of patients with normal size of LA and the absence of fixed paroxysms of AF on the ECG, which is due to the inclusion of a set of states and certain values of indicators, which allows to eliminate the risk of obtaining false conclusions.

1 cl, 1 ex