[Change in the phonocardiographic findings in patent Botallo's ductus by means of a ball-shaped catheter].
D006328:Cardiac Catheterization; D004374:Ductus Arteriosus, Patent / Q000175:diagnosis*; D006801:Humans; D008722:Methods; D010701:Phonocardiography
Modifiche del reperto fonocardiografico nel dotto di Botallo pervio mediante catetere a palloncino.