title: [The first derivative in the rheocardiogram].
mesh_terms: D002339:Carotid Arteries; D004562:Electrocardiography; D006334:Heart Function Tests; D006801:Humans; D010701:Phonocardiography; D010992:Plethysmography, Impedance; D011674:Pulse
vernacular_title: La derivata prima del reocardiogramma.