[Physiologic splitting of the first tone].
D000293:Adolescent; D000328:Adult; D004562:Electrocardiography; D006321:Heart / Q000502:physiology; D006326:Heart Auscultation; D006339:Heart Rate; D006801:Humans; D008297:Male; D010701:Phonocardiography
Sdoppiamento fisiologico del primo tono.