title: [Valvular or muscular cause of heart sounds?].
abstract: During the last twenty years, the genesis of the high frequency heart sounds could be outlined in the opposition between "valvular" and "muscular" theories challengers. The latter argued with haemodynamic results and the former with echographic results. The improving investigation methods permitted recently the understanding of valvular closure and authorize conciliation. A valvulo-muscular theory is suggested on the basis of non invasive methods: sound and external pulses recordings, and echography.
mesh_terms: D004452:Echocardiography; D006326:Heart Auscultation; D006347:Heart Sounds; D006351:Heart Valves / Q000502:physiology*; D006439:Hemodynamics; D006801:Humans; D009200:Myocardial Contraction; D010701:Phonocardiography; D016276:Ventricular Function
vernacular_title: Origine valvulaire ou musculaire des bruits du coeur?