title: Intracardiac and external phonocardiographic study in infants with patent ductus arteriosus and pulmonary hypertension.
mesh_terms: D001011:Aorta; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002675:Child, Preschool; D004314:Down Syndrome / Q000150:complications; D004374:Ductus Arteriosus, Patent / Q000175:diagnosis*; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria; D006352:Heart Ventricles; D006439:Hemodynamics; D006801:Humans; D006976:Hypertension, Pulmonary / Q000150:complications*; D007223:Infant; D008297:Male; D010701:Phonocardiography; D011651:Pulmonary Artery