title: [PECULIARITIES OF THE PHONOCARDIOGRAM IN EXTRASYSTOLE AND CARDIAC FIBRILLATION].
mesh_terms: D001145:Arrhythmias, Cardiac; D001281:Atrial Fibrillation; D053840:Brugada Syndrome; D005117:Cardiac Complexes, Premature; D000075224:Cardiac Conduction System Disease; D004562:Electrocardiography; D006329:Heart Conduction System; D006801:Humans; D010701:Phonocardiography
keywords: AURICULAR FIBRILLATION; ELECTROCARDIOGRAPHY; ELECTROSPHYGMOGRAPHY; EXTRASYSTOLE; PHONOCARDIOGRAPHY
vernacular_title: OSOBENNOSTI FONOKARDIOGRAMMY PRI 'EKSTRASIS TOLICHESKO'I I MERTSATEL'NO'I ARITMIIAKH.