title: Long-term results following closure of isolated ostium secundum atrial septal defect in children and adults.
abstract: Information is presented on 166 patients operated  for isolated atrial septal defect of secundum type with a mean follow-up time of 12 yr (range 8-21 yr). The mean age at operation was 23 yr (range 4-63 yr). The incidence of suspected mitral regurgitation is very low (4 cases). Postoperative flutter or fibrillation occurred in 24 cases, 20 out of these were operated after the age of 20 yr. In all 24 cases intermittent or permanent atrial dysrhythmia was present immediately postoperatively. The long-term results with regard to the occurrence of dysrhythmias and increased heart volumes is better in the younger age group.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001281:Atrial Fibrillation / Q000209:etiology*; D001282:Atrial Flutter / Q000209:etiology*; D002306:Cardiac Volume; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000209:etiology; D011183:Postoperative Complications; D014938:Work Capacity Evaluation