title: [Pathogenesis of changes of intensity of cardiac tones].
mesh_terms: D000219:Adams-Stokes Syndrome / Q000503:physiopathology; D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D001794:Blood Pressure; D003331:Coronary Vessels / Q000294:innervation; D004452:Echocardiography; D006321:Heart / Q000294:innervation / Q000502:physiology / Q000503:physiopathology; D006326:Heart Auscultation; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000502:physiology / Q000503:physiopathology; D006351:Heart Valves / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D012018:Reflex; D014630:Vagus Nerve
vernacular_title: O patogeneze izmeneniia sily serdechnykh tonov