Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6128210.17816/kazmj61282Research ArticleChanges in phonocardiograms with atrial fibrillationRadbilO. S.<p>Department of Therapy No. 2</p>info@eco-vector.comDanovskiyL. V.<p>Department of Therapy No. 2</p>info@eco-vector.comKolchinaE. I.<p>Department of Therapy No. 2</p>info@eco-vector.comKrasnovskiyU. M.<p>Department of Therapy No. 2</p>info@eco-vector.comKazan GIDUV named after V.I. Lenin on the basis of the railway hospital30011972531681902202119022021Copyright © 1972, Radbil O.S., Danovskiy L.V., Kolchina E.I., Krasnovskiy U.M.1972<p>It is known that atrial fibrillation most often occurs in mitral heart disease, cardiosclerosis and thyrotoxicosis. Atrial fibrillation not only complicates the clinical course of these diseases, but also significantly complicates the differential diagnosis. In some cases, clinical laboratory and ECG data cannot fully resolve diagnostic doubts about the origin of changes in the myocardium that caused atrial fibrillation.</p>Kazan Medical archiveКазанский медицинский архив