title: [Normal and pathological second sound].
mesh_terms: D000367:Age Factors; D001021:Aortic Valve / Q000502:physiology; D002302:Cardiac Output; D005260:Female; D006326:Heart Auscultation; D006329:Heart Conduction System; D006339:Heart Rate; D006351:Heart Valves / Q000502:physiology*; D006801:Humans; D011247:Pregnancy; D011664:Pulmonary Valve / Q000502:physiology; D013997:Time Factors
vernacular_title: Secondo tono normale e patologico.