title: How not to miss the diagnosis of atrial septal defect in the adult patient.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000150:complications; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D011859:Radiography