Early onset of pulmonary vascular obstruction with atrial septal defect.
D006328:Cardiac Catheterization; D002648:Child; D004417:Dyspnea / Q000209:etiology; D004562:Electrocardiography; D005260:Female; D006326:Heart Auscultation; D006344:Heart Septal Defects, Atrial / Q000150:complications* / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology*; D011859:Radiography