title: Atrial septal defect--secundum type.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006333:Heart Failure / Q000175:diagnosis; D006344:Heart Septal Defects, Atrial; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D011859:Radiography