title: Doppler, M-mode and two-dimensional echocardiography in patent ductus arteriosus.
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization; D004374:Ductus Arteriosus, Patent / Q000150:complications / Q000175:diagnosis*; D004452:Echocardiography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology; D007231:Infant, Newborn; D008297:Male