[Clinical observation on 12 cases of atrial septal defect in the aged].
D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D004562:Electrocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D013902:Radiography, Thoracic