title: The investigation of congenital heart defects in small infants.
mesh_terms: D000367:Age Factors; D000790:Angiocardiography; D001795:Blood Pressure Determination; D006328:Cardiac Catheterization; D002675:Child, Preschool; D003287:Contrast Media / Q000008:administration & dosage; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008722:Methods; D011300:Preoperative Care; D011652:Pulmonary Circulation; D014655:Vascular Resistance
chemical_list: D003287:Contrast Media